876bdd6d46
This patch add supports for mmc/sd driver on AM335X platform. PLL and pinmux configurations for mmc/sd are configured in this patch. Signed-off-by: Chandan Nath <chandan.nath@ti.com> Signed-off-by: Tom Rini <trini@ti.com>
300 lines
5.6 KiB
C
300 lines
5.6 KiB
C
/*
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* mux.c
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <config.h>
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#include "common_def.h"
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#include <asm/arch/hardware.h>
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#include <asm/io.h>
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#define MUX_CFG(value, offset) \
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__raw_writel(value, (CTRL_BASE + offset));
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/* PAD Control Fields */
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#define SLEWCTRL (0x1 << 6)
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#define RXACTIVE (0x1 << 5)
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#define PULLUP_EN (0x1 << 4) /* Pull UP Selection */
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#define PULLUDEN (0x0 << 3) /* Pull up enabled */
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#define PULLUDDIS (0x1 << 3) /* Pull up disabled */
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#define MODE(val) val /* used for Readability */
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/*
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* PAD CONTROL OFFSETS
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* Field names corresponds to the pad signal name
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*/
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struct pad_signals {
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int gpmc_ad0;
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int gpmc_ad1;
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int gpmc_ad2;
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int gpmc_ad3;
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int gpmc_ad4;
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int gpmc_ad5;
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int gpmc_ad6;
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int gpmc_ad7;
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int gpmc_ad8;
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int gpmc_ad9;
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int gpmc_ad10;
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int gpmc_ad11;
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int gpmc_ad12;
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int gpmc_ad13;
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int gpmc_ad14;
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int gpmc_ad15;
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int gpmc_a0;
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int gpmc_a1;
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int gpmc_a2;
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int gpmc_a3;
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int gpmc_a4;
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int gpmc_a5;
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int gpmc_a6;
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int gpmc_a7;
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int gpmc_a8;
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int gpmc_a9;
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int gpmc_a10;
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int gpmc_a11;
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int gpmc_wait0;
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int gpmc_wpn;
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int gpmc_be1n;
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int gpmc_csn0;
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int gpmc_csn1;
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int gpmc_csn2;
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int gpmc_csn3;
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int gpmc_clk;
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int gpmc_advn_ale;
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int gpmc_oen_ren;
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int gpmc_wen;
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int gpmc_be0n_cle;
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int lcd_data0;
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int lcd_data1;
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int lcd_data2;
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int lcd_data3;
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int lcd_data4;
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int lcd_data5;
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int lcd_data6;
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int lcd_data7;
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int lcd_data8;
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int lcd_data9;
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int lcd_data10;
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int lcd_data11;
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int lcd_data12;
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int lcd_data13;
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int lcd_data14;
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int lcd_data15;
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int lcd_vsync;
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int lcd_hsync;
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int lcd_pclk;
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int lcd_ac_bias_en;
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int mmc0_dat3;
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int mmc0_dat2;
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int mmc0_dat1;
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int mmc0_dat0;
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int mmc0_clk;
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int mmc0_cmd;
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int mii1_col;
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int mii1_crs;
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int mii1_rxerr;
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int mii1_txen;
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int mii1_rxdv;
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int mii1_txd3;
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int mii1_txd2;
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int mii1_txd1;
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int mii1_txd0;
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int mii1_txclk;
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int mii1_rxclk;
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int mii1_rxd3;
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int mii1_rxd2;
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int mii1_rxd1;
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int mii1_rxd0;
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int rmii1_refclk;
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int mdio_data;
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int mdio_clk;
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int spi0_sclk;
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int spi0_d0;
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int spi0_d1;
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int spi0_cs0;
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int spi0_cs1;
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int ecap0_in_pwm0_out;
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int uart0_ctsn;
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int uart0_rtsn;
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int uart0_rxd;
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int uart0_txd;
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int uart1_ctsn;
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int uart1_rtsn;
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int uart1_rxd;
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int uart1_txd;
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int i2c0_sda;
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int i2c0_scl;
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int mcasp0_aclkx;
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int mcasp0_fsx;
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int mcasp0_axr0;
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int mcasp0_ahclkr;
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int mcasp0_aclkr;
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int mcasp0_fsr;
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int mcasp0_axr1;
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int mcasp0_ahclkx;
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int xdma_event_intr0;
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int xdma_event_intr1;
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int nresetin_out;
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int porz;
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int nnmi;
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int osc0_in;
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int osc0_out;
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int rsvd1;
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int tms;
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int tdi;
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int tdo;
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int tck;
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int ntrst;
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int emu0;
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int emu1;
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int osc1_in;
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int osc1_out;
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int pmic_power_en;
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int rtc_porz;
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int rsvd2;
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int ext_wakeup;
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int enz_kaldo_1p8v;
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int usb0_dm;
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int usb0_dp;
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int usb0_ce;
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int usb0_id;
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int usb0_vbus;
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int usb0_drvvbus;
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int usb1_dm;
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int usb1_dp;
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int usb1_ce;
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int usb1_id;
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int usb1_vbus;
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int usb1_drvvbus;
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int ddr_resetn;
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int ddr_csn0;
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int ddr_cke;
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int ddr_ck;
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int ddr_nck;
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int ddr_casn;
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int ddr_rasn;
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int ddr_wen;
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int ddr_ba0;
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int ddr_ba1;
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int ddr_ba2;
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int ddr_a0;
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int ddr_a1;
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int ddr_a2;
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int ddr_a3;
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int ddr_a4;
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int ddr_a5;
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int ddr_a6;
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int ddr_a7;
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int ddr_a8;
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int ddr_a9;
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int ddr_a10;
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int ddr_a11;
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int ddr_a12;
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int ddr_a13;
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int ddr_a14;
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int ddr_a15;
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int ddr_odt;
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int ddr_d0;
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int ddr_d1;
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int ddr_d2;
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int ddr_d3;
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int ddr_d4;
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int ddr_d5;
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int ddr_d6;
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int ddr_d7;
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int ddr_d8;
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int ddr_d9;
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int ddr_d10;
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int ddr_d11;
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int ddr_d12;
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int ddr_d13;
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int ddr_d14;
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int ddr_d15;
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int ddr_dqm0;
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int ddr_dqm1;
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int ddr_dqs0;
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int ddr_dqsn0;
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int ddr_dqs1;
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int ddr_dqsn1;
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int ddr_vref;
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int ddr_vtp;
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int ddr_strben0;
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int ddr_strben1;
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int ain7;
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int ain6;
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int ain5;
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int ain4;
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int ain3;
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int ain2;
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int ain1;
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int ain0;
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int vrefp;
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int vrefn;
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};
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struct module_pin_mux {
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short reg_offset;
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unsigned char val;
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};
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/* Pad control register offset */
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#define PAD_CTRL_BASE 0x800
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#define OFFSET(x) (unsigned int) (&((struct pad_signals *) \
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(PAD_CTRL_BASE))->x)
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static struct module_pin_mux uart0_pin_mux[] = {
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{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* UART0_RXD */
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{OFFSET(uart0_txd), (MODE(0) | PULLUDEN)}, /* UART0_TXD */
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{-1},
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};
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#ifdef CONFIG_MMC
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static struct module_pin_mux mmc0_pin_mux[] = {
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{OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
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{OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
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{OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
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{OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
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{OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
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{OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
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{OFFSET(mcasp0_aclkr), (MODE(4) | RXACTIVE)}, /* MMC0_WP */
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{OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
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{-1},
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};
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#endif
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/*
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* Configure the pin mux for the module
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*/
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static void configure_module_pin_mux(struct module_pin_mux *mod_pin_mux)
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{
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int i;
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if (!mod_pin_mux)
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return;
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for (i = 0; mod_pin_mux[i].reg_offset != -1; i++)
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MUX_CFG(mod_pin_mux[i].val, mod_pin_mux[i].reg_offset);
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}
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void enable_uart0_pin_mux(void)
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{
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configure_module_pin_mux(uart0_pin_mux);
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}
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#ifdef CONFIG_MMC
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void enable_mmc0_pin_mux(void)
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{
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configure_module_pin_mux(mmc0_pin_mux);
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}
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#endif
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