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linux/drivers/clk/meson/meson8b.c
Martin Blumenstingl 0dad1ec65b clk: meson: meson8b: mark the CPU clock as CLK_IS_CRITICAL 
We don't want the common clock framework to disable the "cpu_clk" if
it's not used by any device. The cpufreq-dt driver does not enable the
CPU clocks. However, even if it would we would still want the CPU clock
to be enabled at all times because the CPU clock is also required even
if we disable CPU frequency scaling on a specific board.

The reason why we want the CPU clock to be enabled is a clock further up
in the tree:
Since commit 6f888e7bc7bd58 ("clk: meson: clk-pll: add enable bit") the
sys_pll can be disabled. However, since the CPU clock is derived from
sys_pll we don't want sys_pll to get disabled. The common clock
framework takes care of that for us by enabling all parent clocks of our
CPU clock when we mark the CPU clock with CLK_IS_CRITICAL.

Until now this is not a problem yet because all clocks in the CPU
clock's tree (including sys_pll) are read-only. However, once we allow
modifications to the clocks in that tree we will need this.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181115224048.13511-4-martin.blumenstingl@googlemail.com
2018-11-23 15:11:57 +01:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2015 Endless Mobile, Inc.
* Author: Carlo Caione <carlo@endlessm.com>
*
* Copyright (c) 2016 BayLibre, Inc.
* Michael Turquette <mturquette@baylibre.com>
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/init.h>
#include <linux/mfd/syscon.h>
#include <linux/of_address.h>
#include <linux/reset-controller.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include "clkc.h"
#include "meson8b.h"
#include "clk-regmap.h"
static DEFINE_SPINLOCK(meson_clk_lock);
struct meson8b_clk_reset {
struct reset_controller_dev reset;
struct regmap *regmap;
};
static const struct pll_params_table sys_pll_params_table[] = {
PLL_PARAMS(50, 1),
PLL_PARAMS(51, 1),
PLL_PARAMS(52, 1),
PLL_PARAMS(53, 1),
PLL_PARAMS(54, 1),
PLL_PARAMS(55, 1),
PLL_PARAMS(56, 1),
PLL_PARAMS(57, 1),
PLL_PARAMS(58, 1),
PLL_PARAMS(59, 1),
PLL_PARAMS(60, 1),
PLL_PARAMS(61, 1),
PLL_PARAMS(62, 1),
PLL_PARAMS(63, 1),
PLL_PARAMS(64, 1),
{ /* sentinel */ },
};
static struct clk_fixed_rate meson8b_xtal = {
.fixed_rate = 24000000,
.hw.init = &(struct clk_init_data){
.name = "xtal",
.num_parents = 0,
.ops = &clk_fixed_rate_ops,
},
};
static struct clk_regmap meson8b_fixed_pll_dco = {
.data = &(struct meson_clk_pll_data){
.en = {
.reg_off = HHI_MPLL_CNTL,
.shift = 30,
.width = 1,
},
.m = {
.reg_off = HHI_MPLL_CNTL,
.shift = 0,
.width = 9,
},
.n = {
.reg_off = HHI_MPLL_CNTL,
.shift = 9,
.width = 5,
},
.frac = {
.reg_off = HHI_MPLL_CNTL2,
.shift = 0,
.width = 12,
},
.l = {
.reg_off = HHI_MPLL_CNTL,
.shift = 31,
.width = 1,
},
.rst = {
.reg_off = HHI_MPLL_CNTL,
.shift = 29,
.width = 1,
},
},
.hw.init = &(struct clk_init_data){
.name = "fixed_pll_dco",
.ops = &meson_clk_pll_ro_ops,
.parent_names = (const char *[]){ "xtal" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fixed_pll = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_MPLL_CNTL,
.shift = 16,
.width = 2,
.flags = CLK_DIVIDER_POWER_OF_TWO,
},
.hw.init = &(struct clk_init_data){
.name = "fixed_pll",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "fixed_pll_dco" },
.num_parents = 1,
/*
* This clock won't ever change at runtime so
* CLK_SET_RATE_PARENT is not required
*/
},
};
static struct clk_regmap meson8b_vid_pll_dco = {
.data = &(struct meson_clk_pll_data){
.en = {
.reg_off = HHI_VID_PLL_CNTL,
.shift = 30,
.width = 1,
},
.m = {
.reg_off = HHI_VID_PLL_CNTL,
.shift = 0,
.width = 9,
},
.n = {
.reg_off = HHI_VID_PLL_CNTL,
.shift = 9,
.width = 5,
},
.l = {
.reg_off = HHI_VID_PLL_CNTL,
.shift = 31,
.width = 1,
},
.rst = {
.reg_off = HHI_VID_PLL_CNTL,
.shift = 29,
.width = 1,
},
},
.hw.init = &(struct clk_init_data){
.name = "vid_pll_dco",
.ops = &meson_clk_pll_ro_ops,
.parent_names = (const char *[]){ "xtal" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_vid_pll = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_VID_PLL_CNTL,
.shift = 16,
.width = 2,
.flags = CLK_DIVIDER_POWER_OF_TWO,
},
.hw.init = &(struct clk_init_data){
.name = "vid_pll",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "vid_pll_dco" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_sys_pll_dco = {
.data = &(struct meson_clk_pll_data){
.en = {
.reg_off = HHI_SYS_PLL_CNTL,
.shift = 30,
.width = 1,
},
.m = {
.reg_off = HHI_SYS_PLL_CNTL,
.shift = 0,
.width = 9,
},
.n = {
.reg_off = HHI_SYS_PLL_CNTL,
.shift = 9,
.width = 5,
},
.l = {
.reg_off = HHI_SYS_PLL_CNTL,
.shift = 31,
.width = 1,
},
.rst = {
.reg_off = HHI_SYS_PLL_CNTL,
.shift = 29,
.width = 1,
},
.table = sys_pll_params_table,
},
.hw.init = &(struct clk_init_data){
.name = "sys_pll_dco",
.ops = &meson_clk_pll_ro_ops,
.parent_names = (const char *[]){ "xtal" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_sys_pll = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_SYS_PLL_CNTL,
.shift = 16,
.width = 2,
.flags = CLK_DIVIDER_POWER_OF_TWO,
},
.hw.init = &(struct clk_init_data){
.name = "sys_pll",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "sys_pll_dco" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_fixed_factor meson8b_fclk_div2_div = {
.mult = 1,
.div = 2,
.hw.init = &(struct clk_init_data){
.name = "fclk_div2_div",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fclk_div2 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL6,
.bit_idx = 27,
},
.hw.init = &(struct clk_init_data){
.name = "fclk_div2",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "fclk_div2_div" },
.num_parents = 1,
/*
* FIXME: Ethernet with a RGMII PHYs is not working if
* fclk_div2 is disabled. it is currently unclear why this
* is. keep it enabled until the Ethernet driver knows how
* to manage this clock.
*/
.flags = CLK_IS_CRITICAL,
},
};
static struct clk_fixed_factor meson8b_fclk_div3_div = {
.mult = 1,
.div = 3,
.hw.init = &(struct clk_init_data){
.name = "fclk_div3_div",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fclk_div3 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL6,
.bit_idx = 28,
},
.hw.init = &(struct clk_init_data){
.name = "fclk_div3",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "fclk_div3_div" },
.num_parents = 1,
},
};
static struct clk_fixed_factor meson8b_fclk_div4_div = {
.mult = 1,
.div = 4,
.hw.init = &(struct clk_init_data){
.name = "fclk_div4_div",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fclk_div4 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL6,
.bit_idx = 29,
},
.hw.init = &(struct clk_init_data){
.name = "fclk_div4",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "fclk_div4_div" },
.num_parents = 1,
},
};
static struct clk_fixed_factor meson8b_fclk_div5_div = {
.mult = 1,
.div = 5,
.hw.init = &(struct clk_init_data){
.name = "fclk_div5_div",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fclk_div5 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL6,
.bit_idx = 30,
},
.hw.init = &(struct clk_init_data){
.name = "fclk_div5",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "fclk_div5_div" },
.num_parents = 1,
},
};
static struct clk_fixed_factor meson8b_fclk_div7_div = {
.mult = 1,
.div = 7,
.hw.init = &(struct clk_init_data){
.name = "fclk_div7_div",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_fclk_div7 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL6,
.bit_idx = 31,
},
.hw.init = &(struct clk_init_data){
.name = "fclk_div7",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "fclk_div7_div" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_mpll_prediv = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_MPLL_CNTL5,
.shift = 12,
.width = 1,
},
.hw.init = &(struct clk_init_data){
.name = "mpll_prediv",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "fixed_pll" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_mpll0_div = {
.data = &(struct meson_clk_mpll_data){
.sdm = {
.reg_off = HHI_MPLL_CNTL7,
.shift = 0,
.width = 14,
},
.sdm_en = {
.reg_off = HHI_MPLL_CNTL7,
.shift = 15,
.width = 1,
},
.n2 = {
.reg_off = HHI_MPLL_CNTL7,
.shift = 16,
.width = 9,
},
.ssen = {
.reg_off = HHI_MPLL_CNTL,
.shift = 25,
.width = 1,
},
.lock = &meson_clk_lock,
},
.hw.init = &(struct clk_init_data){
.name = "mpll0_div",
.ops = &meson_clk_mpll_ops,
.parent_names = (const char *[]){ "mpll_prediv" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_mpll0 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL7,
.bit_idx = 14,
},
.hw.init = &(struct clk_init_data){
.name = "mpll0",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "mpll0_div" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_mpll1_div = {
.data = &(struct meson_clk_mpll_data){
.sdm = {
.reg_off = HHI_MPLL_CNTL8,
.shift = 0,
.width = 14,
},
.sdm_en = {
.reg_off = HHI_MPLL_CNTL8,
.shift = 15,
.width = 1,
},
.n2 = {
.reg_off = HHI_MPLL_CNTL8,
.shift = 16,
.width = 9,
},
.lock = &meson_clk_lock,
},
.hw.init = &(struct clk_init_data){
.name = "mpll1_div",
.ops = &meson_clk_mpll_ops,
.parent_names = (const char *[]){ "mpll_prediv" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_mpll1 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL8,
.bit_idx = 14,
},
.hw.init = &(struct clk_init_data){
.name = "mpll1",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "mpll1_div" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_mpll2_div = {
.data = &(struct meson_clk_mpll_data){
.sdm = {
.reg_off = HHI_MPLL_CNTL9,
.shift = 0,
.width = 14,
},
.sdm_en = {
.reg_off = HHI_MPLL_CNTL9,
.shift = 15,
.width = 1,
},
.n2 = {
.reg_off = HHI_MPLL_CNTL9,
.shift = 16,
.width = 9,
},
.lock = &meson_clk_lock,
},
.hw.init = &(struct clk_init_data){
.name = "mpll2_div",
.ops = &meson_clk_mpll_ops,
.parent_names = (const char *[]){ "mpll_prediv" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_mpll2 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPLL_CNTL9,
.bit_idx = 14,
},
.hw.init = &(struct clk_init_data){
.name = "mpll2",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "mpll2_div" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static u32 mux_table_clk81[] = { 6, 5, 7 };
static struct clk_regmap meson8b_mpeg_clk_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_MPEG_CLK_CNTL,
.mask = 0x7,
.shift = 12,
.table = mux_table_clk81,
},
.hw.init = &(struct clk_init_data){
.name = "mpeg_clk_sel",
.ops = &clk_regmap_mux_ro_ops,
/*
* FIXME bits 14:12 selects from 8 possible parents:
* xtal, 1'b0 (wtf), fclk_div7, mpll_clkout1, mpll_clkout2,
* fclk_div4, fclk_div3, fclk_div5
*/
.parent_names = (const char *[]){ "fclk_div3", "fclk_div4",
"fclk_div5" },
.num_parents = 3,
},
};
static struct clk_regmap meson8b_mpeg_clk_div = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_MPEG_CLK_CNTL,
.shift = 0,
.width = 7,
},
.hw.init = &(struct clk_init_data){
.name = "mpeg_clk_div",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "mpeg_clk_sel" },
.num_parents = 1,
},
};
static struct clk_regmap meson8b_clk81 = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_MPEG_CLK_CNTL,
.bit_idx = 7,
},
.hw.init = &(struct clk_init_data){
.name = "clk81",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "mpeg_clk_div" },
.num_parents = 1,
.flags = CLK_IS_CRITICAL,
},
};
static struct clk_regmap meson8b_cpu_in_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_SYS_CPU_CLK_CNTL0,
.mask = 0x1,
.shift = 0,
},
.hw.init = &(struct clk_init_data){
.name = "cpu_in_sel",
.ops = &clk_regmap_mux_ro_ops,
.parent_names = (const char *[]){ "xtal", "sys_pll" },
.num_parents = 2,
.flags = (CLK_SET_RATE_PARENT |
CLK_SET_RATE_NO_REPARENT),
},
};
static struct clk_fixed_factor meson8b_cpu_div2 = {
.mult = 1,
.div = 2,
.hw.init = &(struct clk_init_data){
.name = "cpu_div2",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "cpu_in_sel" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_fixed_factor meson8b_cpu_div3 = {
.mult = 1,
.div = 3,
.hw.init = &(struct clk_init_data){
.name = "cpu_div3",
.ops = &clk_fixed_factor_ops,
.parent_names = (const char *[]){ "cpu_in_sel" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static const struct clk_div_table cpu_scale_table[] = {
{ .val = 1, .div = 4 },
{ .val = 2, .div = 6 },
{ .val = 3, .div = 8 },
{ .val = 4, .div = 10 },
{ .val = 5, .div = 12 },
{ .val = 6, .div = 14 },
{ .val = 7, .div = 16 },
{ .val = 8, .div = 18 },
{ /* sentinel */ },
};
static struct clk_regmap meson8b_cpu_scale_div = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_SYS_CPU_CLK_CNTL1,
.shift = 20,
.width = 10,
.table = cpu_scale_table,
.flags = CLK_DIVIDER_ALLOW_ZERO,
},
.hw.init = &(struct clk_init_data){
.name = "cpu_scale_div",
.ops = &clk_regmap_divider_ro_ops,
.parent_names = (const char *[]){ "cpu_in_sel" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static u32 mux_table_cpu_scale_out_sel[] = { 0, 1, 3 };
static struct clk_regmap meson8b_cpu_scale_out_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_SYS_CPU_CLK_CNTL0,
.mask = 0x3,
.shift = 2,
.table = mux_table_cpu_scale_out_sel,
},
.hw.init = &(struct clk_init_data){
.name = "cpu_scale_out_sel",
.ops = &clk_regmap_mux_ro_ops,
/*
* NOTE: We are skipping the parent with value 0x2 (which is
* "cpu_div3") because it results in a duty cycle of 33% which
* makes the system unstable and can result in a lockup of the
* whole system.
*/
.parent_names = (const char *[]) { "cpu_in_sel",
"cpu_div2",
"cpu_scale_div" },
.num_parents = 3,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_cpu_clk = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_SYS_CPU_CLK_CNTL0,
.mask = 0x1,
.shift = 7,
},
.hw.init = &(struct clk_init_data){
.name = "cpu_clk",
.ops = &clk_regmap_mux_ro_ops,
.parent_names = (const char *[]){ "xtal",
"cpu_scale_out_sel" },
.num_parents = 2,
.flags = (CLK_SET_RATE_PARENT |
CLK_SET_RATE_NO_REPARENT |
CLK_IS_CRITICAL),
},
};
static struct clk_regmap meson8b_nand_clk_sel = {
.data = &(struct clk_regmap_mux_data){
.offset = HHI_NAND_CLK_CNTL,
.mask = 0x7,
.shift = 9,
.flags = CLK_MUX_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "nand_clk_sel",
.ops = &clk_regmap_mux_ops,
/* FIXME all other parents are unknown: */
.parent_names = (const char *[]){ "fclk_div4", "fclk_div3",
"fclk_div5", "fclk_div7", "xtal" },
.num_parents = 5,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_nand_clk_div = {
.data = &(struct clk_regmap_div_data){
.offset = HHI_NAND_CLK_CNTL,
.shift = 0,
.width = 7,
.flags = CLK_DIVIDER_ROUND_CLOSEST,
},
.hw.init = &(struct clk_init_data){
.name = "nand_clk_div",
.ops = &clk_regmap_divider_ops,
.parent_names = (const char *[]){ "nand_clk_sel" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
static struct clk_regmap meson8b_nand_clk_gate = {
.data = &(struct clk_regmap_gate_data){
.offset = HHI_NAND_CLK_CNTL,
.bit_idx = 8,
},
.hw.init = &(struct clk_init_data){
.name = "nand_clk_gate",
.ops = &clk_regmap_gate_ops,
.parent_names = (const char *[]){ "nand_clk_div" },
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
},
};
/* Everything Else (EE) domain gates */
static MESON_GATE(meson8b_ddr, HHI_GCLK_MPEG0, 0);
static MESON_GATE(meson8b_dos, HHI_GCLK_MPEG0, 1);
static MESON_GATE(meson8b_isa, HHI_GCLK_MPEG0, 5);
static MESON_GATE(meson8b_pl301, HHI_GCLK_MPEG0, 6);
static MESON_GATE(meson8b_periphs, HHI_GCLK_MPEG0, 7);
static MESON_GATE(meson8b_spicc, HHI_GCLK_MPEG0, 8);
static MESON_GATE(meson8b_i2c, HHI_GCLK_MPEG0, 9);
static MESON_GATE(meson8b_sar_adc, HHI_GCLK_MPEG0, 10);
static MESON_GATE(meson8b_smart_card, HHI_GCLK_MPEG0, 11);
static MESON_GATE(meson8b_rng0, HHI_GCLK_MPEG0, 12);
static MESON_GATE(meson8b_uart0, HHI_GCLK_MPEG0, 13);
static MESON_GATE(meson8b_sdhc, HHI_GCLK_MPEG0, 14);
static MESON_GATE(meson8b_stream, HHI_GCLK_MPEG0, 15);
static MESON_GATE(meson8b_async_fifo, HHI_GCLK_MPEG0, 16);
static MESON_GATE(meson8b_sdio, HHI_GCLK_MPEG0, 17);
static MESON_GATE(meson8b_abuf, HHI_GCLK_MPEG0, 18);
static MESON_GATE(meson8b_hiu_iface, HHI_GCLK_MPEG0, 19);
static MESON_GATE(meson8b_assist_misc, HHI_GCLK_MPEG0, 23);
static MESON_GATE(meson8b_spi, HHI_GCLK_MPEG0, 30);
static MESON_GATE(meson8b_i2s_spdif, HHI_GCLK_MPEG1, 2);
static MESON_GATE(meson8b_eth, HHI_GCLK_MPEG1, 3);
static MESON_GATE(meson8b_demux, HHI_GCLK_MPEG1, 4);
static MESON_GATE(meson8b_aiu_glue, HHI_GCLK_MPEG1, 6);
static MESON_GATE(meson8b_iec958, HHI_GCLK_MPEG1, 7);
static MESON_GATE(meson8b_i2s_out, HHI_GCLK_MPEG1, 8);
static MESON_GATE(meson8b_amclk, HHI_GCLK_MPEG1, 9);
static MESON_GATE(meson8b_aififo2, HHI_GCLK_MPEG1, 10);
static MESON_GATE(meson8b_mixer, HHI_GCLK_MPEG1, 11);
static MESON_GATE(meson8b_mixer_iface, HHI_GCLK_MPEG1, 12);
static MESON_GATE(meson8b_adc, HHI_GCLK_MPEG1, 13);
static MESON_GATE(meson8b_blkmv, HHI_GCLK_MPEG1, 14);
static MESON_GATE(meson8b_aiu, HHI_GCLK_MPEG1, 15);
static MESON_GATE(meson8b_uart1, HHI_GCLK_MPEG1, 16);
static MESON_GATE(meson8b_g2d, HHI_GCLK_MPEG1, 20);
static MESON_GATE(meson8b_usb0, HHI_GCLK_MPEG1, 21);
static MESON_GATE(meson8b_usb1, HHI_GCLK_MPEG1, 22);
static MESON_GATE(meson8b_reset, HHI_GCLK_MPEG1, 23);
static MESON_GATE(meson8b_nand, HHI_GCLK_MPEG1, 24);
static MESON_GATE(meson8b_dos_parser, HHI_GCLK_MPEG1, 25);
static MESON_GATE(meson8b_usb, HHI_GCLK_MPEG1, 26);
static MESON_GATE(meson8b_vdin1, HHI_GCLK_MPEG1, 28);
static MESON_GATE(meson8b_ahb_arb0, HHI_GCLK_MPEG1, 29);
static MESON_GATE(meson8b_efuse, HHI_GCLK_MPEG1, 30);
static MESON_GATE(meson8b_boot_rom, HHI_GCLK_MPEG1, 31);
static MESON_GATE(meson8b_ahb_data_bus, HHI_GCLK_MPEG2, 1);
static MESON_GATE(meson8b_ahb_ctrl_bus, HHI_GCLK_MPEG2, 2);
static MESON_GATE(meson8b_hdmi_intr_sync, HHI_GCLK_MPEG2, 3);
static MESON_GATE(meson8b_hdmi_pclk, HHI_GCLK_MPEG2, 4);
static MESON_GATE(meson8b_usb1_ddr_bridge, HHI_GCLK_MPEG2, 8);
static MESON_GATE(meson8b_usb0_ddr_bridge, HHI_GCLK_MPEG2, 9);
static MESON_GATE(meson8b_mmc_pclk, HHI_GCLK_MPEG2, 11);
static MESON_GATE(meson8b_dvin, HHI_GCLK_MPEG2, 12);
static MESON_GATE(meson8b_uart2, HHI_GCLK_MPEG2, 15);
static MESON_GATE(meson8b_sana, HHI_GCLK_MPEG2, 22);
static MESON_GATE(meson8b_vpu_intr, HHI_GCLK_MPEG2, 25);
static MESON_GATE(meson8b_sec_ahb_ahb3_bridge, HHI_GCLK_MPEG2, 26);
static MESON_GATE(meson8b_clk81_a9, HHI_GCLK_MPEG2, 29);
static MESON_GATE(meson8b_vclk2_venci0, HHI_GCLK_OTHER, 1);
static MESON_GATE(meson8b_vclk2_venci1, HHI_GCLK_OTHER, 2);
static MESON_GATE(meson8b_vclk2_vencp0, HHI_GCLK_OTHER, 3);
static MESON_GATE(meson8b_vclk2_vencp1, HHI_GCLK_OTHER, 4);
static MESON_GATE(meson8b_gclk_venci_int, HHI_GCLK_OTHER, 8);
static MESON_GATE(meson8b_gclk_vencp_int, HHI_GCLK_OTHER, 9);
static MESON_GATE(meson8b_dac_clk, HHI_GCLK_OTHER, 10);
static MESON_GATE(meson8b_aoclk_gate, HHI_GCLK_OTHER, 14);
static MESON_GATE(meson8b_iec958_gate, HHI_GCLK_OTHER, 16);
static MESON_GATE(meson8b_enc480p, HHI_GCLK_OTHER, 20);
static MESON_GATE(meson8b_rng1, HHI_GCLK_OTHER, 21);
static MESON_GATE(meson8b_gclk_vencl_int, HHI_GCLK_OTHER, 22);
static MESON_GATE(meson8b_vclk2_venclmcc, HHI_GCLK_OTHER, 24);
static MESON_GATE(meson8b_vclk2_vencl, HHI_GCLK_OTHER, 25);
static MESON_GATE(meson8b_vclk2_other, HHI_GCLK_OTHER, 26);
static MESON_GATE(meson8b_edp, HHI_GCLK_OTHER, 31);
/* Always On (AO) domain gates */
static MESON_GATE(meson8b_ao_media_cpu, HHI_GCLK_AO, 0);
static MESON_GATE(meson8b_ao_ahb_sram, HHI_GCLK_AO, 1);
static MESON_GATE(meson8b_ao_ahb_bus, HHI_GCLK_AO, 2);
static MESON_GATE(meson8b_ao_iface, HHI_GCLK_AO, 3);
static struct clk_hw_onecell_data meson8b_hw_onecell_data = {
.hws = {
[CLKID_XTAL] = &meson8b_xtal.hw,
[CLKID_PLL_FIXED] = &meson8b_fixed_pll.hw,
[CLKID_PLL_VID] = &meson8b_vid_pll.hw,
[CLKID_PLL_SYS] = &meson8b_sys_pll.hw,
[CLKID_FCLK_DIV2] = &meson8b_fclk_div2.hw,
[CLKID_FCLK_DIV3] = &meson8b_fclk_div3.hw,
[CLKID_FCLK_DIV4] = &meson8b_fclk_div4.hw,
[CLKID_FCLK_DIV5] = &meson8b_fclk_div5.hw,
[CLKID_FCLK_DIV7] = &meson8b_fclk_div7.hw,
[CLKID_CPUCLK] = &meson8b_cpu_clk.hw,
[CLKID_MPEG_SEL] = &meson8b_mpeg_clk_sel.hw,
[CLKID_MPEG_DIV] = &meson8b_mpeg_clk_div.hw,
[CLKID_CLK81] = &meson8b_clk81.hw,
[CLKID_DDR] = &meson8b_ddr.hw,
[CLKID_DOS] = &meson8b_dos.hw,
[CLKID_ISA] = &meson8b_isa.hw,
[CLKID_PL301] = &meson8b_pl301.hw,
[CLKID_PERIPHS] = &meson8b_periphs.hw,
[CLKID_SPICC] = &meson8b_spicc.hw,
[CLKID_I2C] = &meson8b_i2c.hw,
[CLKID_SAR_ADC] = &meson8b_sar_adc.hw,
[CLKID_SMART_CARD] = &meson8b_smart_card.hw,
[CLKID_RNG0] = &meson8b_rng0.hw,
[CLKID_UART0] = &meson8b_uart0.hw,
[CLKID_SDHC] = &meson8b_sdhc.hw,
[CLKID_STREAM] = &meson8b_stream.hw,
[CLKID_ASYNC_FIFO] = &meson8b_async_fifo.hw,
[CLKID_SDIO] = &meson8b_sdio.hw,
[CLKID_ABUF] = &meson8b_abuf.hw,
[CLKID_HIU_IFACE] = &meson8b_hiu_iface.hw,
[CLKID_ASSIST_MISC] = &meson8b_assist_misc.hw,
[CLKID_SPI] = &meson8b_spi.hw,
[CLKID_I2S_SPDIF] = &meson8b_i2s_spdif.hw,
[CLKID_ETH] = &meson8b_eth.hw,
[CLKID_DEMUX] = &meson8b_demux.hw,
[CLKID_AIU_GLUE] = &meson8b_aiu_glue.hw,
[CLKID_IEC958] = &meson8b_iec958.hw,
[CLKID_I2S_OUT] = &meson8b_i2s_out.hw,
[CLKID_AMCLK] = &meson8b_amclk.hw,
[CLKID_AIFIFO2] = &meson8b_aififo2.hw,
[CLKID_MIXER] = &meson8b_mixer.hw,
[CLKID_MIXER_IFACE] = &meson8b_mixer_iface.hw,
[CLKID_ADC] = &meson8b_adc.hw,
[CLKID_BLKMV] = &meson8b_blkmv.hw,
[CLKID_AIU] = &meson8b_aiu.hw,
[CLKID_UART1] = &meson8b_uart1.hw,
[CLKID_G2D] = &meson8b_g2d.hw,
[CLKID_USB0] = &meson8b_usb0.hw,
[CLKID_USB1] = &meson8b_usb1.hw,
[CLKID_RESET] = &meson8b_reset.hw,
[CLKID_NAND] = &meson8b_nand.hw,
[CLKID_DOS_PARSER] = &meson8b_dos_parser.hw,
[CLKID_USB] = &meson8b_usb.hw,
[CLKID_VDIN1] = &meson8b_vdin1.hw,
[CLKID_AHB_ARB0] = &meson8b_ahb_arb0.hw,
[CLKID_EFUSE] = &meson8b_efuse.hw,
[CLKID_BOOT_ROM] = &meson8b_boot_rom.hw,
[CLKID_AHB_DATA_BUS] = &meson8b_ahb_data_bus.hw,
[CLKID_AHB_CTRL_BUS] = &meson8b_ahb_ctrl_bus.hw,
[CLKID_HDMI_INTR_SYNC] = &meson8b_hdmi_intr_sync.hw,
[CLKID_HDMI_PCLK] = &meson8b_hdmi_pclk.hw,
[CLKID_USB1_DDR_BRIDGE] = &meson8b_usb1_ddr_bridge.hw,
[CLKID_USB0_DDR_BRIDGE] = &meson8b_usb0_ddr_bridge.hw,
[CLKID_MMC_PCLK] = &meson8b_mmc_pclk.hw,
[CLKID_DVIN] = &meson8b_dvin.hw,
[CLKID_UART2] = &meson8b_uart2.hw,
[CLKID_SANA] = &meson8b_sana.hw,
[CLKID_VPU_INTR] = &meson8b_vpu_intr.hw,
[CLKID_SEC_AHB_AHB3_BRIDGE] = &meson8b_sec_ahb_ahb3_bridge.hw,
[CLKID_CLK81_A9] = &meson8b_clk81_a9.hw,
[CLKID_VCLK2_VENCI0] = &meson8b_vclk2_venci0.hw,
[CLKID_VCLK2_VENCI1] = &meson8b_vclk2_venci1.hw,
[CLKID_VCLK2_VENCP0] = &meson8b_vclk2_vencp0.hw,
[CLKID_VCLK2_VENCP1] = &meson8b_vclk2_vencp1.hw,
[CLKID_GCLK_VENCI_INT] = &meson8b_gclk_venci_int.hw,
[CLKID_GCLK_VENCP_INT] = &meson8b_gclk_vencp_int.hw,
[CLKID_DAC_CLK] = &meson8b_dac_clk.hw,
[CLKID_AOCLK_GATE] = &meson8b_aoclk_gate.hw,
[CLKID_IEC958_GATE] = &meson8b_iec958_gate.hw,
[CLKID_ENC480P] = &meson8b_enc480p.hw,
[CLKID_RNG1] = &meson8b_rng1.hw,
[CLKID_GCLK_VENCL_INT] = &meson8b_gclk_vencl_int.hw,
[CLKID_VCLK2_VENCLMCC] = &meson8b_vclk2_venclmcc.hw,
[CLKID_VCLK2_VENCL] = &meson8b_vclk2_vencl.hw,
[CLKID_VCLK2_OTHER] = &meson8b_vclk2_other.hw,
[CLKID_EDP] = &meson8b_edp.hw,
[CLKID_AO_MEDIA_CPU] = &meson8b_ao_media_cpu.hw,
[CLKID_AO_AHB_SRAM] = &meson8b_ao_ahb_sram.hw,
[CLKID_AO_AHB_BUS] = &meson8b_ao_ahb_bus.hw,
[CLKID_AO_IFACE] = &meson8b_ao_iface.hw,
[CLKID_MPLL0] = &meson8b_mpll0.hw,
[CLKID_MPLL1] = &meson8b_mpll1.hw,
[CLKID_MPLL2] = &meson8b_mpll2.hw,
[CLKID_MPLL0_DIV] = &meson8b_mpll0_div.hw,
[CLKID_MPLL1_DIV] = &meson8b_mpll1_div.hw,
[CLKID_MPLL2_DIV] = &meson8b_mpll2_div.hw,
[CLKID_CPU_IN_SEL] = &meson8b_cpu_in_sel.hw,
[CLKID_CPU_DIV2] = &meson8b_cpu_div2.hw,
[CLKID_CPU_DIV3] = &meson8b_cpu_div3.hw,
[CLKID_CPU_SCALE_DIV] = &meson8b_cpu_scale_div.hw,
[CLKID_CPU_SCALE_OUT_SEL] = &meson8b_cpu_scale_out_sel.hw,
[CLKID_MPLL_PREDIV] = &meson8b_mpll_prediv.hw,
[CLKID_FCLK_DIV2_DIV] = &meson8b_fclk_div2_div.hw,
[CLKID_FCLK_DIV3_DIV] = &meson8b_fclk_div3_div.hw,
[CLKID_FCLK_DIV4_DIV] = &meson8b_fclk_div4_div.hw,
[CLKID_FCLK_DIV5_DIV] = &meson8b_fclk_div5_div.hw,
[CLKID_FCLK_DIV7_DIV] = &meson8b_fclk_div7_div.hw,
[CLKID_NAND_SEL] = &meson8b_nand_clk_sel.hw,
[CLKID_NAND_DIV] = &meson8b_nand_clk_div.hw,
[CLKID_NAND_CLK] = &meson8b_nand_clk_gate.hw,
[CLKID_PLL_FIXED_DCO] = &meson8b_fixed_pll_dco.hw,
[CLKID_PLL_VID_DCO] = &meson8b_vid_pll_dco.hw,
[CLKID_PLL_SYS_DCO] = &meson8b_sys_pll_dco.hw,
[CLK_NR_CLKS] = NULL,
},
.num = CLK_NR_CLKS,
};
static struct clk_regmap *const meson8b_clk_regmaps[] = {
&meson8b_clk81,
&meson8b_ddr,
&meson8b_dos,
&meson8b_isa,
&meson8b_pl301,
&meson8b_periphs,
&meson8b_spicc,
&meson8b_i2c,
&meson8b_sar_adc,
&meson8b_smart_card,
&meson8b_rng0,
&meson8b_uart0,
&meson8b_sdhc,
&meson8b_stream,
&meson8b_async_fifo,
&meson8b_sdio,
&meson8b_abuf,
&meson8b_hiu_iface,
&meson8b_assist_misc,
&meson8b_spi,
&meson8b_i2s_spdif,
&meson8b_eth,
&meson8b_demux,
&meson8b_aiu_glue,
&meson8b_iec958,
&meson8b_i2s_out,
&meson8b_amclk,
&meson8b_aififo2,
&meson8b_mixer,
&meson8b_mixer_iface,
&meson8b_adc,
&meson8b_blkmv,
&meson8b_aiu,
&meson8b_uart1,
&meson8b_g2d,
&meson8b_usb0,
&meson8b_usb1,
&meson8b_reset,
&meson8b_nand,
&meson8b_dos_parser,
&meson8b_usb,
&meson8b_vdin1,
&meson8b_ahb_arb0,
&meson8b_efuse,
&meson8b_boot_rom,
&meson8b_ahb_data_bus,
&meson8b_ahb_ctrl_bus,
&meson8b_hdmi_intr_sync,
&meson8b_hdmi_pclk,
&meson8b_usb1_ddr_bridge,
&meson8b_usb0_ddr_bridge,
&meson8b_mmc_pclk,
&meson8b_dvin,
&meson8b_uart2,
&meson8b_sana,
&meson8b_vpu_intr,
&meson8b_sec_ahb_ahb3_bridge,
&meson8b_clk81_a9,
&meson8b_vclk2_venci0,
&meson8b_vclk2_venci1,
&meson8b_vclk2_vencp0,
&meson8b_vclk2_vencp1,
&meson8b_gclk_venci_int,
&meson8b_gclk_vencp_int,
&meson8b_dac_clk,
&meson8b_aoclk_gate,
&meson8b_iec958_gate,
&meson8b_enc480p,
&meson8b_rng1,
&meson8b_gclk_vencl_int,
&meson8b_vclk2_venclmcc,
&meson8b_vclk2_vencl,
&meson8b_vclk2_other,
&meson8b_edp,
&meson8b_ao_media_cpu,
&meson8b_ao_ahb_sram,
&meson8b_ao_ahb_bus,
&meson8b_ao_iface,
&meson8b_mpeg_clk_div,
&meson8b_mpeg_clk_sel,
&meson8b_mpll0,
&meson8b_mpll1,
&meson8b_mpll2,
&meson8b_mpll0_div,
&meson8b_mpll1_div,
&meson8b_mpll2_div,
&meson8b_fixed_pll,
&meson8b_vid_pll,
&meson8b_sys_pll,
&meson8b_cpu_in_sel,
&meson8b_cpu_scale_div,
&meson8b_cpu_scale_out_sel,
&meson8b_cpu_clk,
&meson8b_mpll_prediv,
&meson8b_fclk_div2,
&meson8b_fclk_div3,
&meson8b_fclk_div4,
&meson8b_fclk_div5,
&meson8b_fclk_div7,
&meson8b_nand_clk_sel,
&meson8b_nand_clk_div,
&meson8b_nand_clk_gate,
&meson8b_fixed_pll_dco,
&meson8b_vid_pll_dco,
&meson8b_sys_pll_dco,
};
static const struct meson8b_clk_reset_line {
u32 reg;
u8 bit_idx;
} meson8b_clk_reset_bits[] = {
[CLKC_RESET_L2_CACHE_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 30
},
[CLKC_RESET_AXI_64_TO_128_BRIDGE_A5_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 29
},
[CLKC_RESET_SCU_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 28
},
[CLKC_RESET_CPU3_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 27
},
[CLKC_RESET_CPU2_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 26
},
[CLKC_RESET_CPU1_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 25
},
[CLKC_RESET_CPU0_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 24
},
[CLKC_RESET_A5_GLOBAL_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 18
},
[CLKC_RESET_A5_AXI_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 17
},
[CLKC_RESET_A5_ABP_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL0, .bit_idx = 16
},
[CLKC_RESET_AXI_64_TO_128_BRIDGE_MMC_SOFT_RESET] = {
.reg = HHI_SYS_CPU_CLK_CNTL1, .bit_idx = 30
},
[CLKC_RESET_VID_CLK_CNTL_SOFT_RESET] = {
.reg = HHI_VID_CLK_CNTL, .bit_idx = 15
},
[CLKC_RESET_VID_DIVIDER_CNTL_SOFT_RESET_POST] = {
.reg = HHI_VID_DIVIDER_CNTL, .bit_idx = 7
},
[CLKC_RESET_VID_DIVIDER_CNTL_SOFT_RESET_PRE] = {
.reg = HHI_VID_DIVIDER_CNTL, .bit_idx = 3
},
[CLKC_RESET_VID_DIVIDER_CNTL_RESET_N_POST] = {
.reg = HHI_VID_DIVIDER_CNTL, .bit_idx = 1
},
[CLKC_RESET_VID_DIVIDER_CNTL_RESET_N_PRE] = {
.reg = HHI_VID_DIVIDER_CNTL, .bit_idx = 0
},
};
static int meson8b_clk_reset_update(struct reset_controller_dev *rcdev,
unsigned long id, bool assert)
{
struct meson8b_clk_reset *meson8b_clk_reset =
container_of(rcdev, struct meson8b_clk_reset, reset);
unsigned long flags;
const struct meson8b_clk_reset_line *reset;
if (id >= ARRAY_SIZE(meson8b_clk_reset_bits))
return -EINVAL;
reset = &meson8b_clk_reset_bits[id];
spin_lock_irqsave(&meson_clk_lock, flags);
if (assert)
regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
BIT(reset->bit_idx), BIT(reset->bit_idx));
else
regmap_update_bits(meson8b_clk_reset->regmap, reset->reg,
BIT(reset->bit_idx), 0);
spin_unlock_irqrestore(&meson_clk_lock, flags);
return 0;
}
static int meson8b_clk_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return meson8b_clk_reset_update(rcdev, id, true);
}
static int meson8b_clk_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
return meson8b_clk_reset_update(rcdev, id, false);
}
static const struct reset_control_ops meson8b_clk_reset_ops = {
.assert = meson8b_clk_reset_assert,
.deassert = meson8b_clk_reset_deassert,
};
static const struct regmap_config clkc_regmap_config = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
};
static void __init meson8b_clkc_init(struct device_node *np)
{
struct meson8b_clk_reset *rstc;
void __iomem *clk_base;
struct regmap *map;
int i, ret;
map = syscon_node_to_regmap(of_get_parent(np));
if (IS_ERR(map)) {
pr_info("failed to get HHI regmap - Trying obsolete regs\n");
/* Generic clocks, PLLs and some of the reset-bits */
clk_base = of_iomap(np, 1);
if (!clk_base) {
pr_err("%s: Unable to map clk base\n", __func__);
return;
}
map = regmap_init_mmio(NULL, clk_base, &clkc_regmap_config);
if (IS_ERR(map))
return;
}
rstc = kzalloc(sizeof(*rstc), GFP_KERNEL);
if (!rstc)
return;
/* Reset Controller */
rstc->regmap = map;
rstc->reset.ops = &meson8b_clk_reset_ops;
rstc->reset.nr_resets = ARRAY_SIZE(meson8b_clk_reset_bits);
rstc->reset.of_node = np;
ret = reset_controller_register(&rstc->reset);
if (ret) {
pr_err("%s: Failed to register clkc reset controller: %d\n",
__func__, ret);
return;
}
/* Populate regmap for the regmap backed clocks */
for (i = 0; i < ARRAY_SIZE(meson8b_clk_regmaps); i++)
meson8b_clk_regmaps[i]->map = map;
/*
* register all clks
* CLKID_UNUSED = 0, so skip it and start with CLKID_XTAL = 1
*/
for (i = CLKID_XTAL; i < CLK_NR_CLKS; i++) {
/* array might be sparse */
if (!meson8b_hw_onecell_data.hws[i])
continue;
ret = clk_hw_register(NULL, meson8b_hw_onecell_data.hws[i]);
if (ret)
return;
}
ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get,
&meson8b_hw_onecell_data);
if (ret)
pr_err("%s: failed to register clock provider\n", __func__);
}
CLK_OF_DECLARE_DRIVER(meson8_clkc, "amlogic,meson8-clkc",
meson8b_clkc_init);
CLK_OF_DECLARE_DRIVER(meson8b_clkc, "amlogic,meson8b-clkc",
meson8b_clkc_init);
CLK_OF_DECLARE_DRIVER(meson8m2_clkc, "amlogic,meson8m2-clkc",
meson8b_clkc_init);
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