aa6e94deab
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS_SDRAM namespace do not easily transition to Kconfig. In many cases they likely should come from the device tree instead. Move these out of CONFIG namespace and in to CFG namespace. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
1180 lines
30 KiB
C
1180 lines
30 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) ASPEED Technology Inc.
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <errno.h>
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#include <ram.h>
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#include <regmap.h>
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#include <reset.h>
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#include <asm/io.h>
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#include <asm/arch/scu_ast2600.h>
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#include <asm/arch/sdram_ast2600.h>
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#include <asm/global_data.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <linux/bitfield.h>
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#include <dt-bindings/clock/ast2600-clock.h>
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#define DDR_PHY_TBL_CHG_ADDR 0xaeeddeea
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#define DDR_PHY_TBL_END 0xaeededed
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/**
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* phyr030[18:16] - Ron PU (PHY side)
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* phyr030[14:12] - Ron PD (PHY side)
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* b'000 : disable
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* b'001 : 240 ohm
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* b'010 : 120 ohm
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* b'011 : 80 ohm
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* b'100 : 60 ohm
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* b'101 : 48 ohm
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* b'110 : 40 ohm
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* b'111 : 34 ohm (default)
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*/
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#define PHY_RON ((0x7 << 16) | (0x7 << 12))
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/**
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* phyr030[10:8] - ODT configuration (PHY side)
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* b'000 : ODT disabled
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* b'001 : 240 ohm
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* b'010 : 120 ohm
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* b'011 : 80 ohm (default)
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* b'100 : 60 ohm
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* b'101 : 48 ohm
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* b'110 : 40 ohm
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* b'111 : 34 ohm
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*/
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#define PHY_ODT (0x3 << 8)
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/**
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* MR1[2:1] output driver impedance
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* b'00 : 34 ohm (default)
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* b'01 : 48 ohm
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*/
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#define DRAM_RON (0x0 << 1)
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/**
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* DRAM ODT - synchronous ODT mode
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* RTT_WR: disable
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* RTT_NOM = RTT_PARK
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*
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* MR1[10:8] RTT_NOM
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* b'000 : RTT_NOM disable
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* b'001 : 60 ohm
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* b'010 : 120 ohm
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* b'011 : 40 ohm
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* b'100 : 240 ohm
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* b'101 : 48 ohm (default)
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* b'110 : 80 ohm
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* b'111 : 34 ohm
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*
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* MR5[8:6] RTT_PARK
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* b'000 : RTT_PARK disable
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* b'001 : 60 ohm
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* b'010 : 120 ohm
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* b'011 : 40 ohm
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* b'100 : 240 ohm
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* b'101 : 48 ohm (default)
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* b'110 : 80 ohm
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* b'111 : 34 ohm
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*
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* MR2[11:9] RTT_WR
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* b'000 : Dynamic ODT off (default)
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* b'001 : 120 ohm
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* b'010 : 240 ohm
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* b'011 : Hi-Z
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* b'100 : 80 ohm
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*/
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#define RTT_WR (0x0 << 9)
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#define RTT_NOM (0x5 << 8)
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#define RTT_PARK (0x5 << 6)
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/**
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* MR6[6] VrefDQ training range
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* b'0 : range 1
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* b'1 : range 2 (default)
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*/
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#define VREFDQ_RANGE_2 BIT(6)
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/**
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* Latency setting:
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* AL = PL = 0 (hardware fixed setting)
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* -> WL = AL + CWL + PL = CWL
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* -> RL = AL + CL + PL = CL
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*/
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#define CONFIG_WL 9
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#define CONFIG_RL 12
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#define T_RDDATA_EN ((CONFIG_RL - 2) << 8)
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#define T_PHY_WRLAT (CONFIG_WL - 2)
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/* MR0 */
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#define MR0_CL_12 (BIT(4) | BIT(2))
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#define MR0_WR12_RTP6 BIT(9)
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#define MR0_DLL_RESET BIT(8)
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#define MR0_VAL (MR0_CL_12 | MR0_WR12_RTP6 | MR0_DLL_RESET)
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/* MR1 */
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#define MR1_VAL (0x0001 | RTT_NOM | DRAM_RON)
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/* MR2 */
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#define MR2_CWL_9 0
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#define MR2_VAL (0x0000 | RTT_WR | MR2_CWL_9)
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/* MR3 ~ MR6 */
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#define MR3_VAL 0x0000
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#define MR4_VAL 0x0000
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#define MR5_VAL (0x0400 | RTT_PARK)
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#define MR6_VAL 0x0400
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/**
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* The offset value applied to the DDR PHY write data eye training result
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* to fine-tune the write DQ/DQS alignment
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*/
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#define WR_DATA_EYE_OFFSET (0x10 << 8)
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#if defined(CONFIG_ASPEED_DDR4_800)
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u32 ast2600_sdramphy_config[165] = {
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0x1e6e0100, // start address
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0x00000000, // phyr000
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0x0c002062, // phyr004
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0x1a7a0063, // phyr008
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0x5a7a0063, // phyr00c
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0x1a7a0063, // phyr010
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0x1a7a0063, // phyr014
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0x20000000, // phyr018
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0x20000000, // phyr01c
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0x20000000, // phyr020
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0x20000000, // phyr024
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0x00000008, // phyr028
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0x00000000, // phyr02c
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(PHY_RON | PHY_ODT), /* phyr030 */
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0x00000000, // phyr034
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0x00000000, // phyr038
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0x20000000, // phyr03c
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0x50506000, // phyr040
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0x50505050, // phyr044
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0x00002f07, // phyr048
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0x00003080, // phyr04c
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0x04000000, // phyr050
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((MR3_VAL << 16) | MR2_VAL), /* phyr054 */
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((MR0_VAL << 16) | MR1_VAL), /* phyr058 */
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((MR5_VAL << 16) | MR4_VAL), /* phyr05c */
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((0x0800 << 16) | MR6_VAL | VREFDQ_RANGE_2 | 0xe), /* phyr060 */
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0x00000000, // phyr064
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0x00180008, // phyr068
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0x00e00400, // phyr06c
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0x00140206, // phyr070
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0x1d4c0000, // phyr074
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(0x493e0100 | T_PHY_WRLAT), /* phyr078 */
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0x08060404, // phyr07c
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(0x90000000 | T_RDDATA_EN), /* phyr080 */
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0x06420618, // phyr084
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0x00001002, // phyr088
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0x05701016, // phyr08c
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0x10000000, // phyr090
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0xaeeddeea, // change address
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0x1e6e019c, // new address
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0x20202020, // phyr09c
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0x20202020, // phyr0a0
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0x00002020, // phyr0a4
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0x00002020, // phyr0a8
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0x00000001, // phyr0ac
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0xaeeddeea, // change address
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0x1e6e01cc, // new address
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0x01010101, // phyr0cc
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0x01010101, // phyr0d0
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0x80808080, // phyr0d4
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0x80808080, // phyr0d8
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0xaeeddeea, // change address
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0x1e6e0288, // new address
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0x80808080, // phyr188
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0x80808080, // phyr18c
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0x80808080, // phyr190
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0x80808080, // phyr194
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0xaeeddeea, // change address
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0x1e6e02f8, // new address
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0x90909090, // phyr1f8
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0x88888888, // phyr1fc
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0xaeeddeea, // change address
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0x1e6e0300, // new address
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0x00000000, // phyr200
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0xaeeddeea, // change address
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0x1e6e0194, // new address
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0x80118260, // phyr094
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0xaeeddeea, // change address
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0x1e6e019c, // new address
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0x20202020, // phyr09c
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0x20202020, // phyr0a0
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0x00002020, // phyr0a4
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0x00000000, /* phyr0a8 */
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0x00000001, // phyr0ac
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0xaeeddeea, // change address
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0x1e6e0318, // new address
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0x09222719, // phyr218
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0x00aa4403, // phyr21c
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0xaeeddeea, // change address
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0x1e6e0198, // new address
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0x08060000, // phyr098
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0xaeeddeea, // change address
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0x1e6e01b0, // new address
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0x00000000, // phyr0b0
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0x00000000, // phyr0b4
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0x00000000, // phyr0b8
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0x00000000, // phyr0bc
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0x00000000, // phyr0c0
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0x00000000, // phyr0c4
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0x000aff2c, // phyr0c8
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0xaeeddeea, // change address
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0x1e6e01dc, // new address
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0x00080000, // phyr0dc
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0x00000000, // phyr0e0
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0xaa55aa55, // phyr0e4
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0x55aa55aa, // phyr0e8
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0xaaaa5555, // phyr0ec
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0x5555aaaa, // phyr0f0
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0xaa55aa55, // phyr0f4
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0x55aa55aa, // phyr0f8
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0xaaaa5555, // phyr0fc
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0x5555aaaa, // phyr100
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0xaa55aa55, // phyr104
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0x55aa55aa, // phyr108
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0xaaaa5555, // phyr10c
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0x5555aaaa, // phyr110
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0xaa55aa55, // phyr114
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0x55aa55aa, // phyr118
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0xaaaa5555, // phyr11c
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0x5555aaaa, // phyr120
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0x20202020, // phyr124
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0x20202020, // phyr128
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0x20202020, // phyr12c
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0x20202020, // phyr130
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0x20202020, // phyr134
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0x20202020, // phyr138
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0x20202020, // phyr13c
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0x20202020, // phyr140
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0x20202020, // phyr144
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0x20202020, // phyr148
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0x20202020, // phyr14c
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0x20202020, // phyr150
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0x20202020, // phyr154
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0x20202020, // phyr158
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0x20202020, // phyr15c
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0x20202020, // phyr160
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0x20202020, // phyr164
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0x20202020, // phyr168
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0x20202020, // phyr16c
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0x20202020, // phyr170
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0xaeeddeea, // change address
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0x1e6e0298, // new address
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0x20200000, /* phyr198 */
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0x20202020, // phyr19c
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0x20202020, // phyr1a0
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0x20202020, // phyr1a4
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0x20202020, // phyr1a8
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0x20202020, // phyr1ac
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0x20202020, // phyr1b0
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0x20202020, // phyr1b4
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0x20202020, // phyr1b8
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0x20202020, // phyr1bc
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0x20202020, // phyr1c0
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0x20202020, // phyr1c4
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0x20202020, // phyr1c8
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0x20202020, // phyr1cc
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0x20202020, // phyr1d0
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0x20202020, // phyr1d4
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0x20202020, // phyr1d8
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0x20202020, // phyr1dc
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0x20202020, // phyr1e0
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0x20202020, // phyr1e4
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0x00002020, // phyr1e8
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0xaeeddeea, // change address
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0x1e6e0304, // new address
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(0x00000001 | WR_DATA_EYE_OFFSET), /* phyr204 */
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0xaeeddeea, // change address
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0x1e6e027c, // new address
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0x4e400000, // phyr17c
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0x59595959, // phyr180
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0x40404040, // phyr184
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0xaeeddeea, // change address
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0x1e6e02f4, // new address
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0x00000059, // phyr1f4
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0xaeededed, // end
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};
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#else
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u32 ast2600_sdramphy_config[165] = {
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0x1e6e0100, // start address
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0x00000000, // phyr000
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0x0c002062, // phyr004
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0x1a7a0063, // phyr008
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0x5a7a0063, // phyr00c
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0x1a7a0063, // phyr010
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0x1a7a0063, // phyr014
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0x20000000, // phyr018
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0x20000000, // phyr01c
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0x20000000, // phyr020
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0x20000000, // phyr024
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0x00000008, // phyr028
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0x00000000, // phyr02c
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(PHY_RON | PHY_ODT), /* phyr030 */
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0x00000000, // phyr034
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0x00000000, // phyr038
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0x20000000, // phyr03c
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0x50506000, // phyr040
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0x50505050, // phyr044
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0x00002f07, // phyr048
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0x00003080, // phyr04c
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0x04000000, // phyr050
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((MR3_VAL << 16) | MR2_VAL), /* phyr054 */
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((MR0_VAL << 16) | MR1_VAL), /* phyr058 */
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((MR5_VAL << 16) | MR4_VAL), /* phyr05c */
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((0x0800 << 16) | MR6_VAL | VREFDQ_RANGE_2 | 0xe), /* phyr060 */
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0x00000000, // phyr064
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0x00180008, // phyr068
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0x00e00400, // phyr06c
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0x00140206, // phyr070
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0x1d4c0000, // phyr074
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(0x493e0100 | T_PHY_WRLAT), /* phyr078 */
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0x08060404, // phyr07c
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(0x90000000 | T_RDDATA_EN), /* phyr080 */
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0x06420c30, // phyr084
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0x00001002, // phyr088
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0x05701016, // phyr08c
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0x10000000, // phyr090
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0xaeeddeea, // change address
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0x1e6e019c, // new address
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0x20202020, // phyr09c
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0x20202020, // phyr0a0
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0x00002020, // phyr0a4
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0x00002020, // phyr0a8
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0x00000001, // phyr0ac
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0xaeeddeea, // change address
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0x1e6e01cc, // new address
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0x01010101, // phyr0cc
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0x01010101, // phyr0d0
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0x80808080, // phyr0d4
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0x80808080, // phyr0d8
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0xaeeddeea, // change address
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0x1e6e0288, // new address
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0x80808080, // phyr188
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0x80808080, // phyr18c
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0x80808080, // phyr190
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0x80808080, // phyr194
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0xaeeddeea, // change address
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0x1e6e02f8, // new address
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0x90909090, // phyr1f8
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0x88888888, // phyr1fc
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0xaeeddeea, // change address
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0x1e6e0300, // new address
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0x00000000, // phyr200
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0xaeeddeea, // change address
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0x1e6e0194, // new address
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0x801112e0, // phyr094
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0xaeeddeea, // change address
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0x1e6e019c, // new address
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0x20202020, // phyr09c
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0x20202020, // phyr0a0
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0x00002020, // phyr0a4
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0x00000000, /* phyr0a8 */
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0x00000001, // phyr0ac
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0xaeeddeea, // change address
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0x1e6e0318, // new address
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0x09222719, // phyr218
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0x00aa4403, // phyr21c
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0xaeeddeea, // change address
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0x1e6e0198, // new address
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0x08060000, // phyr098
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0xaeeddeea, // change address
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0x1e6e01b0, // new address
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0x00000000, // phyr0b0
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0x00000000, // phyr0b4
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0x00000000, // phyr0b8
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0x00000000, // phyr0bc
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0x00000000, // phyr0c0 - ori
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0x00000000, // phyr0c4
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0x000aff2c, // phyr0c8
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0xaeeddeea, // change address
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0x1e6e01dc, // new address
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0x00080000, // phyr0dc
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0x00000000, // phyr0e0
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0xaa55aa55, // phyr0e4
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0x55aa55aa, // phyr0e8
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0xaaaa5555, // phyr0ec
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0x5555aaaa, // phyr0f0
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0xaa55aa55, // phyr0f4
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0x55aa55aa, // phyr0f8
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0xaaaa5555, // phyr0fc
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0x5555aaaa, // phyr100
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0xaa55aa55, // phyr104
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0x55aa55aa, // phyr108
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0xaaaa5555, // phyr10c
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0x5555aaaa, // phyr110
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0xaa55aa55, // phyr114
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0x55aa55aa, // phyr118
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0xaaaa5555, // phyr11c
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0x5555aaaa, // phyr120
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0x20202020, // phyr124
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0x20202020, // phyr128
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0x20202020, // phyr12c
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0x20202020, // phyr130
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0x20202020, // phyr134
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0x20202020, // phyr138
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0x20202020, // phyr13c
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0x20202020, // phyr140
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0x20202020, // phyr144
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0x20202020, // phyr148
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0x20202020, // phyr14c
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0x20202020, // phyr150
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0x20202020, // phyr154
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0x20202020, // phyr158
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0x20202020, // phyr15c
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0x20202020, // phyr160
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0x20202020, // phyr164
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0x20202020, // phyr168
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0x20202020, // phyr16c
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0x20202020, // phyr170
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0xaeeddeea, // change address
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0x1e6e0298, // new address
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0x20200000, /* phyr198 */
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0x20202020, // phyr19c
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0x20202020, // phyr1a0
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0x20202020, // phyr1a4
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0x20202020, // phyr1a8
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0x20202020, // phyr1ac
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0x20202020, // phyr1b0
|
|
0x20202020, // phyr1b4
|
|
0x20202020, // phyr1b8
|
|
0x20202020, // phyr1bc
|
|
0x20202020, // phyr1c0
|
|
0x20202020, // phyr1c4
|
|
0x20202020, // phyr1c8
|
|
0x20202020, // phyr1cc
|
|
0x20202020, // phyr1d0
|
|
0x20202020, // phyr1d4
|
|
0x20202020, // phyr1d8
|
|
0x20202020, // phyr1dc
|
|
0x20202020, // phyr1e0
|
|
0x20202020, // phyr1e4
|
|
0x00002020, // phyr1e8
|
|
0xaeeddeea, // change address
|
|
0x1e6e0304, // new address
|
|
(0x00000001 | WR_DATA_EYE_OFFSET), /* phyr204 */
|
|
0xaeeddeea, // change address
|
|
0x1e6e027c, // new address
|
|
0x4e400000, // phyr17c
|
|
0x59595959, // phyr180
|
|
0x40404040, // phyr184
|
|
0xaeeddeea, // change address
|
|
0x1e6e02f4, // new address
|
|
0x00000059, // phyr1f4
|
|
0xaeededed, // end
|
|
};
|
|
#endif
|
|
|
|
/* MPLL configuration */
|
|
#define SCU_MPLL_FREQ_400M 0x0008405F
|
|
#define SCU_MPLL_EXT_400M 0x0000002F
|
|
#define SCU_MPLL_FREQ_333M 0x00488299
|
|
#define SCU_MPLL_EXT_333M 0x0000014C
|
|
#define SCU_MPLL_FREQ_200M 0x0078007F
|
|
#define SCU_MPLL_EXT_200M 0x0000003F
|
|
#define SCU_MPLL_FREQ_100M 0x0078003F
|
|
#define SCU_MPLL_EXT_100M 0x0000001F
|
|
|
|
#if defined(CONFIG_ASPEED_DDR4_1600)
|
|
#define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_400M
|
|
#define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_400M
|
|
#elif defined(CONFIG_ASPEED_DDR4_1333)
|
|
#define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_333M
|
|
#define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_333M
|
|
#elif defined(CONFIG_ASPEED_DDR4_800)
|
|
#define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_200M
|
|
#define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_200M
|
|
#elif defined(CONFIG_ASPEED_DDR4_400)
|
|
#define SCU_MPLL_FREQ_CFG SCU_MPLL_FREQ_100M
|
|
#define SCU_MPLL_EXT_CFG SCU_MPLL_EXT_100M
|
|
#else
|
|
#error "undefined DDR4 target rate\n"
|
|
#endif
|
|
|
|
/*
|
|
* AC timing and SDRAM mode register setting
|
|
* for real chip are derived from the model GDDR4-1600
|
|
*/
|
|
#define DDR4_MR01_MODE ((MR1_VAL << 16) | MR0_VAL)
|
|
#define DDR4_MR23_MODE ((MR3_VAL << 16) | MR2_VAL)
|
|
#define DDR4_MR45_MODE ((MR5_VAL << 16) | MR4_VAL)
|
|
#define DDR4_MR6_MODE MR6_VAL
|
|
#define DDR4_TRFC_1600 0x467299f1
|
|
#define DDR4_TRFC_1333 0x3a5f80c9
|
|
#define DDR4_TRFC_800 0x23394c78
|
|
#define DDR4_TRFC_400 0x111c263c
|
|
|
|
#if defined(CONFIG_ASPEED_DDR4_1600)
|
|
#define DDR4_TRFC DDR4_TRFC_1600
|
|
#define DDR4_PHY_TRAIN_TRFC 0xc30
|
|
#elif defined(CONFIG_ASPEED_DDR4_1333)
|
|
#define DDR4_TRFC DDR4_TRFC_1333
|
|
#define DDR4_PHY_TRAIN_TRFC 0xa25
|
|
#elif defined(CONFIG_ASPEED_DDR4_800)
|
|
#define DDR4_TRFC DDR4_TRFC_800
|
|
#define DDR4_PHY_TRAIN_TRFC 0x618
|
|
#elif defined(CONFIG_ASPEED_DDR4_400)
|
|
#define DDR4_TRFC DDR4_TRFC_400
|
|
#define DDR4_PHY_TRAIN_TRFC 0x30c
|
|
#else
|
|
#error "undefined tRFC setting"
|
|
#endif
|
|
|
|
/* supported SDRAM size */
|
|
#define SDRAM_SIZE_1KB (1024U)
|
|
#define SDRAM_SIZE_1MB (SDRAM_SIZE_1KB * SDRAM_SIZE_1KB)
|
|
#define SDRAM_MIN_SIZE (256 * SDRAM_SIZE_1MB)
|
|
#define SDRAM_MAX_SIZE (2048 * SDRAM_SIZE_1MB)
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static const u32 ddr4_ac_timing[4] = {
|
|
0x040e0307, 0x0f4711f1, 0x0e060304, 0x00001240 };
|
|
static const u32 ddr_max_grant_params[4] = {
|
|
0x44444444, 0x44444444, 0x44444444, 0x44444444 };
|
|
|
|
struct dram_info {
|
|
struct ram_info info;
|
|
struct clk ddr_clk;
|
|
struct ast2600_sdrammc_regs *regs;
|
|
struct ast2600_scu *scu;
|
|
struct ast2600_ddr_phy *phy;
|
|
void __iomem *phy_setting;
|
|
void __iomem *phy_status;
|
|
ulong clock_rate;
|
|
};
|
|
|
|
static void ast2600_sdramphy_kick_training(struct dram_info *info)
|
|
{
|
|
u32 data;
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
|
|
writel(SDRAM_PHYCTRL0_NRST, ®s->phy_ctrl[0]);
|
|
udelay(5);
|
|
writel(SDRAM_PHYCTRL0_NRST | SDRAM_PHYCTRL0_INIT, ®s->phy_ctrl[0]);
|
|
udelay(1000);
|
|
|
|
while (1) {
|
|
data = readl(®s->phy_ctrl[0]) & SDRAM_PHYCTRL0_INIT;
|
|
if (data == 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief load DDR-PHY configurations table to the PHY registers
|
|
* @param[in] p_tbl - pointer to the configuration table
|
|
* @param[in] info - pointer to the DRAM info struct
|
|
*
|
|
* There are two sets of MRS (Mode Registers) configuration in ast2600 memory
|
|
* system: one is in the SDRAM MC (memory controller) which is used in run
|
|
* time, and the other is in the DDR-PHY IP which is used during DDR-PHY
|
|
* training.
|
|
*/
|
|
static void ast2600_sdramphy_init(u32 *p_tbl, struct dram_info *info)
|
|
{
|
|
u32 reg_base = (u32)info->phy_setting;
|
|
u32 addr = p_tbl[0];
|
|
u32 data;
|
|
int i = 1;
|
|
|
|
writel(0, &info->regs->phy_ctrl[0]);
|
|
udelay(10);
|
|
|
|
while (1) {
|
|
if (addr < reg_base) {
|
|
debug("invalid DDR-PHY addr: 0x%08x\n", addr);
|
|
break;
|
|
}
|
|
data = p_tbl[i++];
|
|
|
|
if (data == DDR_PHY_TBL_END) {
|
|
break;
|
|
} else if (data == DDR_PHY_TBL_CHG_ADDR) {
|
|
addr = p_tbl[i++];
|
|
} else {
|
|
writel(data, addr);
|
|
addr += 4;
|
|
}
|
|
}
|
|
|
|
data = readl(info->phy_setting + 0x84) & ~GENMASK(16, 0);
|
|
data |= DDR4_PHY_TRAIN_TRFC;
|
|
writel(data, info->phy_setting + 0x84);
|
|
}
|
|
|
|
static int ast2600_sdramphy_check_status(struct dram_info *info)
|
|
{
|
|
u32 value, tmp;
|
|
u32 reg_base = (u32)info->phy_status;
|
|
int need_retrain = 0;
|
|
|
|
debug("\nSDRAM PHY training report:\n");
|
|
|
|
/* training status */
|
|
value = readl(reg_base + 0x00);
|
|
debug("rO_DDRPHY_reg offset 0x00 = 0x%08x\n", value);
|
|
|
|
if (value & BIT(3))
|
|
debug("\tinitial PVT calibration fail\n");
|
|
|
|
if (value & BIT(5))
|
|
debug("\truntime calibration fail\n");
|
|
|
|
/* PU & PD */
|
|
value = readl(reg_base + 0x30);
|
|
debug("rO_DDRPHY_reg offset 0x30 = 0x%08x\n", value);
|
|
debug(" PU = 0x%02x\n", value & 0xff);
|
|
debug(" PD = 0x%02x\n", (value >> 16) & 0xff);
|
|
|
|
/* read eye window */
|
|
value = readl(reg_base + 0x68);
|
|
if (0 == (value & GENMASK(7, 0)))
|
|
need_retrain = 1;
|
|
|
|
debug("rO_DDRPHY_reg offset 0x68 = 0x%08x\n", value);
|
|
debug(" rising edge of read data eye training pass window\n");
|
|
tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255;
|
|
debug(" B0:%d%%\n", tmp);
|
|
tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255;
|
|
debug(" B1:%d%%\n", tmp);
|
|
|
|
value = readl(reg_base + 0xC8);
|
|
debug("rO_DDRPHY_reg offset 0xC8 = 0x%08x\n", value);
|
|
debug(" falling edge of read data eye training pass window\n");
|
|
tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255;
|
|
debug(" B0:%d%%\n", tmp);
|
|
tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255;
|
|
debug(" B1:%d%%\n", tmp);
|
|
|
|
/* write eye window */
|
|
value = readl(reg_base + 0x7c);
|
|
if (0 == (value & GENMASK(7, 0)))
|
|
need_retrain = 1;
|
|
|
|
debug("rO_DDRPHY_reg offset 0x7C = 0x%08x\n", value);
|
|
debug(" rising edge of write data eye training pass window\n");
|
|
tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 255;
|
|
debug(" B0:%d%%\n", tmp);
|
|
tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 255;
|
|
debug(" B1:%d%%\n", tmp);
|
|
|
|
/* read Vref training result */
|
|
value = readl(reg_base + 0x88);
|
|
debug("rO_DDRPHY_reg offset 0x88 = 0x%08x\n", value);
|
|
debug(" read Vref training result\n");
|
|
tmp = (((value & GENMASK(7, 0)) >> 0) * 100) / 127;
|
|
debug(" B0:%d%%\n", tmp);
|
|
tmp = (((value & GENMASK(15, 8)) >> 8) * 100) / 127;
|
|
debug(" B1:%d%%\n", tmp);
|
|
|
|
/* write Vref training result */
|
|
value = readl(reg_base + 0x90);
|
|
debug("rO_DDRPHY_reg offset 0x90 = 0x%08x\n", value);
|
|
|
|
/* gate train */
|
|
value = readl(reg_base + 0x50);
|
|
if ((0 == (value & GENMASK(15, 0))) ||
|
|
(0 == (value & GENMASK(31, 16)))) {
|
|
need_retrain = 1;
|
|
}
|
|
|
|
debug("rO_DDRPHY_reg offset 0x50 = 0x%08x\n", value);
|
|
|
|
return need_retrain;
|
|
}
|
|
|
|
#ifndef CONFIG_ASPEED_BYPASS_SELFTEST
|
|
#define MC_TEST_PATTERN_N 8
|
|
static u32 as2600_sdrammc_test_pattern[MC_TEST_PATTERN_N] = {
|
|
0xcc33cc33, 0xff00ff00, 0xaa55aa55, 0x88778877,
|
|
0x92cc4d6e, 0x543d3cde, 0xf1e843c7, 0x7c61d253 };
|
|
|
|
#define TIMEOUT_DRAM 5000000
|
|
int ast2600_sdrammc_dg_test(struct dram_info *info, unsigned int datagen, u32 mode)
|
|
{
|
|
unsigned int data;
|
|
unsigned int timeout = 0;
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
|
|
writel(0, ®s->ecc_test_ctrl);
|
|
|
|
if (mode == 0)
|
|
writel(0x00000085 | (datagen << 3), ®s->ecc_test_ctrl);
|
|
else
|
|
writel(0x000000C1 | (datagen << 3), ®s->ecc_test_ctrl);
|
|
|
|
do {
|
|
data = readl(®s->ecc_test_ctrl) & GENMASK(13, 12);
|
|
|
|
if (data & BIT(13))
|
|
return 0;
|
|
|
|
if (++timeout > TIMEOUT_DRAM) {
|
|
debug("Timeout!!\n");
|
|
writel(0, ®s->ecc_test_ctrl);
|
|
return -1;
|
|
}
|
|
} while (!data);
|
|
|
|
writel(0, ®s->ecc_test_ctrl);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ast2600_sdrammc_cbr_test(struct dram_info *info)
|
|
{
|
|
u32 i;
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
|
|
clrsetbits_le32(®s->test_addr, GENMASK(30, 4), 0x7ffff0);
|
|
|
|
/* single */
|
|
for (i = 0; i < 8; i++)
|
|
if (ast2600_sdrammc_dg_test(info, i, 0))
|
|
return -1;
|
|
|
|
/* burst */
|
|
for (i = 0; i < 8; i++)
|
|
if (ast2600_sdrammc_dg_test(info, i, i))
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ast2600_sdrammc_test(struct dram_info *info)
|
|
{
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
|
|
u32 pass_cnt = 0;
|
|
u32 fail_cnt = 0;
|
|
u32 target_cnt = 2;
|
|
u32 test_cnt = 0;
|
|
u32 pattern;
|
|
u32 i = 0;
|
|
bool finish = false;
|
|
|
|
debug("sdram mc test:\n");
|
|
while (!finish) {
|
|
pattern = as2600_sdrammc_test_pattern[i++];
|
|
i = i % MC_TEST_PATTERN_N;
|
|
debug(" pattern = %08X : ", pattern);
|
|
writel(pattern, ®s->test_init_val);
|
|
|
|
if (ast2600_sdrammc_cbr_test(info)) {
|
|
debug("fail\n");
|
|
fail_cnt++;
|
|
} else {
|
|
debug("pass\n");
|
|
pass_cnt++;
|
|
}
|
|
|
|
if (++test_cnt == target_cnt)
|
|
finish = true;
|
|
}
|
|
debug("statistics: pass/fail/total:%d/%d/%d\n", pass_cnt, fail_cnt,
|
|
target_cnt);
|
|
|
|
return fail_cnt;
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* scu500[14:13]
|
|
* 2b'00: VGA memory size = 16MB
|
|
* 2b'01: VGA memory size = 16MB
|
|
* 2b'10: VGA memory size = 32MB
|
|
* 2b'11: VGA memory size = 64MB
|
|
*
|
|
* mcr04[3:2]
|
|
* 2b'00: VGA memory size = 8MB
|
|
* 2b'01: VGA memory size = 16MB
|
|
* 2b'10: VGA memory size = 32MB
|
|
* 2b'11: VGA memory size = 64MB
|
|
*/
|
|
static size_t ast2600_sdrammc_get_vga_mem_size(struct dram_info *info)
|
|
{
|
|
u32 vga_hwconf;
|
|
size_t vga_mem_size_base = 8 * 1024 * 1024;
|
|
|
|
vga_hwconf =
|
|
(readl(&info->scu->hwstrap1) & SCU_HWSTRAP1_VGA_MEM_MASK) >>
|
|
SCU_HWSTRAP1_VGA_MEM_SHIFT;
|
|
|
|
if (vga_hwconf == 0) {
|
|
vga_hwconf = 1;
|
|
writel(vga_hwconf << SCU_HWSTRAP1_VGA_MEM_SHIFT,
|
|
&info->scu->hwstrap1);
|
|
}
|
|
|
|
clrsetbits_le32(&info->regs->config, SDRAM_CONF_VGA_SIZE_MASK,
|
|
((vga_hwconf << SDRAM_CONF_VGA_SIZE_SHIFT) &
|
|
SDRAM_CONF_VGA_SIZE_MASK));
|
|
|
|
/* no need to reserve VGA memory if efuse[VGA disable] is set */
|
|
if (readl(&info->scu->efuse) & SCU_EFUSE_DIS_VGA)
|
|
return 0;
|
|
|
|
return vga_mem_size_base << vga_hwconf;
|
|
}
|
|
|
|
/*
|
|
* Find out RAM size and save it in dram_info
|
|
*
|
|
* The procedure is taken from Aspeed SDK
|
|
*/
|
|
static void ast2600_sdrammc_calc_size(struct dram_info *info)
|
|
{
|
|
/* The controller supports 256/512/1024/2048 MB ram */
|
|
size_t ram_size = SDRAM_MIN_SIZE;
|
|
const int write_test_offset = 0x100000;
|
|
u32 test_pattern = 0xdeadbeef;
|
|
u32 cap_param = SDRAM_CONF_CAP_2048M;
|
|
u32 refresh_timing_param = DDR4_TRFC;
|
|
const u32 write_addr_base = CFG_SYS_SDRAM_BASE + write_test_offset;
|
|
|
|
for (ram_size = SDRAM_MAX_SIZE; ram_size > SDRAM_MIN_SIZE;
|
|
ram_size >>= 1) {
|
|
writel(test_pattern, write_addr_base + (ram_size >> 1));
|
|
test_pattern = (test_pattern >> 4) | (test_pattern << 28);
|
|
}
|
|
|
|
/* One last write to overwrite all wrapped values */
|
|
writel(test_pattern, write_addr_base);
|
|
|
|
/* Reset the pattern and see which value was really written */
|
|
test_pattern = 0xdeadbeef;
|
|
for (ram_size = SDRAM_MAX_SIZE; ram_size > SDRAM_MIN_SIZE;
|
|
ram_size >>= 1) {
|
|
if (readl(write_addr_base + (ram_size >> 1)) == test_pattern)
|
|
break;
|
|
|
|
--cap_param;
|
|
refresh_timing_param >>= 8;
|
|
test_pattern = (test_pattern >> 4) | (test_pattern << 28);
|
|
}
|
|
|
|
clrsetbits_le32(&info->regs->ac_timing[1],
|
|
(SDRAM_AC_TRFC_MASK << SDRAM_AC_TRFC_SHIFT),
|
|
((refresh_timing_param & SDRAM_AC_TRFC_MASK)
|
|
<< SDRAM_AC_TRFC_SHIFT));
|
|
|
|
info->info.base = CFG_SYS_SDRAM_BASE;
|
|
info->info.size = ram_size - ast2600_sdrammc_get_vga_mem_size(info);
|
|
|
|
clrsetbits_le32(&info->regs->config, SDRAM_CONF_CAP_MASK,
|
|
((cap_param << SDRAM_CONF_CAP_SHIFT) & SDRAM_CONF_CAP_MASK));
|
|
}
|
|
|
|
static int ast2600_sdrammc_init_ddr4(struct dram_info *info)
|
|
{
|
|
const u32 power_ctrl = MCR34_CKE_EN | MCR34_AUTOPWRDN_EN |
|
|
MCR34_MREQ_BYPASS_DIS | MCR34_RESETN_DIS |
|
|
MCR34_ODT_EN | MCR34_ODT_AUTO_ON |
|
|
(0x1 << MCR34_ODT_EXT_SHIFT);
|
|
|
|
/* init SDRAM-PHY only on real chip */
|
|
ast2600_sdramphy_init(ast2600_sdramphy_config, info);
|
|
writel((MCR34_CKE_EN | MCR34_MREQI_DIS | MCR34_RESETN_DIS),
|
|
&info->regs->power_ctrl);
|
|
udelay(5);
|
|
ast2600_sdramphy_kick_training(info);
|
|
udelay(500);
|
|
writel(SDRAM_RESET_DLL_ZQCL_EN, &info->regs->refresh_timing);
|
|
|
|
writel(MCR30_SET_MR(3), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(6), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(5), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(4), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(2), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(1), &info->regs->mode_setting_control);
|
|
writel(MCR30_SET_MR(0) | MCR30_RESET_DLL_DELAY_EN,
|
|
&info->regs->mode_setting_control);
|
|
|
|
writel(SDRAM_REFRESH_EN | SDRAM_RESET_DLL_ZQCL_EN |
|
|
(0x5f << SDRAM_REFRESH_PERIOD_SHIFT),
|
|
&info->regs->refresh_timing);
|
|
|
|
/* wait self-refresh idle */
|
|
while (readl(&info->regs->power_ctrl) &
|
|
MCR34_SELF_REFRESH_STATUS_MASK)
|
|
;
|
|
|
|
writel(SDRAM_REFRESH_EN | SDRAM_LOW_PRI_REFRESH_EN |
|
|
SDRAM_REFRESH_ZQCS_EN |
|
|
(0x5f << SDRAM_REFRESH_PERIOD_SHIFT) |
|
|
(0x42aa << SDRAM_REFRESH_PERIOD_ZQCS_SHIFT),
|
|
&info->regs->refresh_timing);
|
|
|
|
writel(power_ctrl, &info->regs->power_ctrl);
|
|
udelay(500);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ast2600_sdrammc_unlock(struct dram_info *info)
|
|
{
|
|
writel(SDRAM_UNLOCK_KEY, &info->regs->protection_key);
|
|
while (!readl(&info->regs->protection_key))
|
|
;
|
|
}
|
|
|
|
static void ast2600_sdrammc_lock(struct dram_info *info)
|
|
{
|
|
writel(~SDRAM_UNLOCK_KEY, &info->regs->protection_key);
|
|
while (readl(&info->regs->protection_key))
|
|
;
|
|
}
|
|
|
|
static void ast2600_sdrammc_common_init(struct ast2600_sdrammc_regs *regs)
|
|
{
|
|
int i;
|
|
u32 reg;
|
|
|
|
writel(MCR34_MREQI_DIS | MCR34_RESETN_DIS, ®s->power_ctrl);
|
|
writel(SDRAM_VIDEO_UNLOCK_KEY, ®s->gm_protection_key);
|
|
writel(0x10 << MCR38_RW_MAX_GRANT_CNT_RQ_SHIFT,
|
|
®s->arbitration_ctrl);
|
|
writel(0xFFBBFFF4, ®s->req_limit_mask);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ddr_max_grant_params); ++i)
|
|
writel(ddr_max_grant_params[i], ®s->max_grant_len[i]);
|
|
|
|
writel(MCR50_RESET_ALL_INTR, ®s->intr_ctrl);
|
|
|
|
writel(0x07FFFFFF, ®s->ecc_range_ctrl);
|
|
|
|
writel(0, ®s->ecc_test_ctrl);
|
|
writel(0x80000001, ®s->test_addr);
|
|
writel(0, ®s->test_fail_dq_bit);
|
|
writel(0, ®s->test_init_val);
|
|
|
|
writel(0xFFFFFFFF, ®s->req_input_ctrl);
|
|
writel(0, ®s->req_high_pri_ctrl);
|
|
|
|
udelay(600);
|
|
|
|
#ifdef CONFIG_ASPEED_DDR4_DUALX8
|
|
writel(0x37, ®s->config);
|
|
#else
|
|
writel(0x17, ®s->config);
|
|
#endif
|
|
|
|
/* load controller setting */
|
|
for (i = 0; i < ARRAY_SIZE(ddr4_ac_timing); ++i)
|
|
writel(ddr4_ac_timing[i], ®s->ac_timing[i]);
|
|
|
|
/* update CL and WL */
|
|
reg = readl(®s->ac_timing[1]);
|
|
reg &= ~(SDRAM_WL_SETTING | SDRAM_CL_SETTING);
|
|
reg |= FIELD_PREP(SDRAM_WL_SETTING, CONFIG_WL - 5) |
|
|
FIELD_PREP(SDRAM_CL_SETTING, CONFIG_RL - 5);
|
|
writel(reg, ®s->ac_timing[1]);
|
|
|
|
writel(DDR4_MR01_MODE, ®s->mr01_mode_setting);
|
|
writel(DDR4_MR23_MODE, ®s->mr23_mode_setting);
|
|
writel(DDR4_MR45_MODE, ®s->mr45_mode_setting);
|
|
writel(DDR4_MR6_MODE, ®s->mr6_mode_setting);
|
|
}
|
|
|
|
/*
|
|
* Update size info according to the ECC HW setting
|
|
*
|
|
* Assume SDRAM has been initialized by SPL or the host. To get the RAM size, we
|
|
* don't need to calculate the ECC size again but read from MCR04 and derive the
|
|
* size from its value.
|
|
*/
|
|
static void ast2600_sdrammc_update_size(struct dram_info *info)
|
|
{
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
u32 conf = readl(®s->config);
|
|
u32 cap_param;
|
|
size_t ram_size = SDRAM_MAX_SIZE;
|
|
size_t hw_size;
|
|
|
|
cap_param = (conf & SDRAM_CONF_CAP_MASK) >> SDRAM_CONF_CAP_SHIFT;
|
|
switch (cap_param) {
|
|
case SDRAM_CONF_CAP_2048M:
|
|
ram_size = 2048 * SDRAM_SIZE_1MB;
|
|
break;
|
|
case SDRAM_CONF_CAP_1024M:
|
|
ram_size = 1024 * SDRAM_SIZE_1MB;
|
|
break;
|
|
case SDRAM_CONF_CAP_512M:
|
|
ram_size = 512 * SDRAM_SIZE_1MB;
|
|
break;
|
|
case SDRAM_CONF_CAP_256M:
|
|
ram_size = 256 * SDRAM_SIZE_1MB;
|
|
break;
|
|
}
|
|
|
|
info->info.base = CFG_SYS_SDRAM_BASE;
|
|
info->info.size = ram_size - ast2600_sdrammc_get_vga_mem_size(info);
|
|
|
|
if (0 == (conf & SDRAM_CONF_ECC_SETUP))
|
|
return;
|
|
|
|
hw_size = readl(®s->ecc_range_ctrl) & SDRAM_ECC_RANGE_ADDR_MASK;
|
|
hw_size += (1 << SDRAM_ECC_RANGE_ADDR_SHIFT);
|
|
|
|
info->info.size = hw_size;
|
|
}
|
|
|
|
#ifdef CONFIG_ASPEED_ECC
|
|
static void ast2600_sdrammc_ecc_enable(struct dram_info *info)
|
|
{
|
|
struct ast2600_sdrammc_regs *regs = info->regs;
|
|
size_t conf_size;
|
|
u32 reg;
|
|
|
|
conf_size = CONFIG_ASPEED_ECC_SIZE * SDRAM_SIZE_1MB;
|
|
if (conf_size > info->info.size) {
|
|
printf("warning: ECC configured %dMB but actual size is %dMB\n",
|
|
CONFIG_ASPEED_ECC_SIZE,
|
|
info->info.size / SDRAM_SIZE_1MB);
|
|
conf_size = info->info.size;
|
|
} else if (conf_size == 0) {
|
|
conf_size = info->info.size;
|
|
}
|
|
|
|
info->info.size = (((conf_size / 9) * 8) >> 20) << 20;
|
|
writel(((info->info.size >> 20) - 1) << 20, ®s->ecc_range_ctrl);
|
|
reg = readl(®s->config) | SDRAM_CONF_ECC_SETUP;
|
|
writel(reg, ®s->config);
|
|
|
|
writel(0, ®s->test_init_val);
|
|
writel(0x80000001, ®s->test_addr);
|
|
writel(0x221, ®s->ecc_test_ctrl);
|
|
while (0 == (readl(®s->ecc_test_ctrl) & BIT(12)))
|
|
;
|
|
writel(0, ®s->ecc_test_ctrl);
|
|
writel(BIT(31), ®s->intr_ctrl);
|
|
writel(0, ®s->intr_ctrl);
|
|
}
|
|
#endif
|
|
|
|
static int ast2600_sdrammc_probe(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
u32 reg;
|
|
struct dram_info *priv = (struct dram_info *)dev_get_priv(dev);
|
|
struct ast2600_sdrammc_regs *regs = priv->regs;
|
|
struct udevice *clk_dev;
|
|
|
|
/* find SCU base address from clock device */
|
|
ret = uclass_get_device_by_driver(UCLASS_CLK,
|
|
DM_DRIVER_GET(aspeed_ast2600_scu), &clk_dev);
|
|
if (ret) {
|
|
debug("clock device not defined\n");
|
|
return ret;
|
|
}
|
|
|
|
priv->scu = devfdt_get_addr_ptr(clk_dev);
|
|
if (IS_ERR(priv->scu)) {
|
|
debug("%s(): can't get SCU\n", __func__);
|
|
return PTR_ERR(priv->scu);
|
|
}
|
|
|
|
if (readl(&priv->scu->dram_hdshk) & SCU_DRAM_HDSHK_RDY) {
|
|
printf("already initialized, ");
|
|
ast2600_sdrammc_update_size(priv);
|
|
return 0;
|
|
}
|
|
|
|
reg = readl(&priv->scu->mpll);
|
|
reg &= ~(SCU_PLL_BYPASS | SCU_PLL_DIV_MASK |
|
|
SCU_PLL_DENUM_MASK | SCU_PLL_NUM_MASK);
|
|
reg |= (SCU_PLL_RST | SCU_PLL_OFF | SCU_MPLL_FREQ_CFG);
|
|
writel(reg, &priv->scu->mpll);
|
|
writel(SCU_MPLL_EXT_CFG, &priv->scu->mpll_ext);
|
|
udelay(100);
|
|
reg &= ~(SCU_PLL_RST | SCU_PLL_OFF);
|
|
writel(reg, &priv->scu->mpll);
|
|
|
|
while ((readl(&priv->scu->mpll_ext) & BIT(31)) == 0)
|
|
;
|
|
|
|
ast2600_sdrammc_unlock(priv);
|
|
ast2600_sdrammc_common_init(regs);
|
|
L_ast2600_sdramphy_train:
|
|
ast2600_sdrammc_init_ddr4(priv);
|
|
|
|
if (ast2600_sdramphy_check_status(priv) != 0) {
|
|
printf("DDR4 PHY training fail, retrain\n");
|
|
goto L_ast2600_sdramphy_train;
|
|
}
|
|
|
|
ast2600_sdrammc_calc_size(priv);
|
|
|
|
#ifndef CONFIG_ASPEED_BYPASS_SELFTEST
|
|
if (ast2600_sdrammc_test(priv) != 0) {
|
|
printf("%s: DDR4 init fail\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ASPEED_ECC
|
|
ast2600_sdrammc_ecc_enable(priv);
|
|
#endif
|
|
|
|
writel(readl(&priv->scu->dram_hdshk) | SCU_DRAM_HDSHK_RDY,
|
|
&priv->scu->dram_hdshk);
|
|
|
|
clrbits_le32(®s->intr_ctrl, MCR50_RESET_ALL_INTR);
|
|
ast2600_sdrammc_lock(priv);
|
|
return 0;
|
|
}
|
|
|
|
static int ast2600_sdrammc_of_to_plat(struct udevice *dev)
|
|
{
|
|
struct dram_info *priv = dev_get_priv(dev);
|
|
|
|
priv->regs = (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
|
|
priv->phy_setting = (void *)(uintptr_t)devfdt_get_addr_index(dev, 1);
|
|
priv->phy_status = (void *)(uintptr_t)devfdt_get_addr_index(dev, 2);
|
|
|
|
priv->clock_rate = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
|
|
"clock-frequency", 0);
|
|
if (!priv->clock_rate) {
|
|
debug("DDR Clock Rate not defined\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ast2600_sdrammc_get_info(struct udevice *dev, struct ram_info *info)
|
|
{
|
|
struct dram_info *priv = dev_get_priv(dev);
|
|
|
|
*info = priv->info;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct ram_ops ast2600_sdrammc_ops = {
|
|
.get_info = ast2600_sdrammc_get_info,
|
|
};
|
|
|
|
static const struct udevice_id ast2600_sdrammc_ids[] = {
|
|
{ .compatible = "aspeed,ast2600-sdrammc" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(sdrammc_ast2600) = {
|
|
.name = "aspeed_ast2600_sdrammc",
|
|
.id = UCLASS_RAM,
|
|
.of_match = ast2600_sdrammc_ids,
|
|
.ops = &ast2600_sdrammc_ops,
|
|
.of_to_plat = ast2600_sdrammc_of_to_plat,
|
|
.probe = ast2600_sdrammc_probe,
|
|
.priv_auto = sizeof(struct dram_info),
|
|
};
|