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// SPDX-License-Identifier: GPL-2.0+
/*
* Amlogic Meson8 DDR clock controller
*
* Copyright (C) 2019 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
*/
#include <dt-bindings/clock/meson8-ddr-clkc.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include "clk-regmap.h"
#include "clk-pll.h"
#include "meson-clkc-utils.h"
#define AM_DDR_PLL_CNTL 0x00
#define AM_DDR_PLL_CNTL1 0x04
#define AM_DDR_PLL_CNTL2 0x08
#define AM_DDR_PLL_CNTL3 0x0c
#define AM_DDR_PLL_CNTL4 0x10
#define AM_DDR_PLL_STS 0x14
#define DDR_CLK_CNTL 0x18
#define DDR_CLK_STS 0x1c
static struct clk_regmap meson8_ddr_pll_dco = {
.data = &(struct meson_clk_pll_data){
.en = {
.reg_off = AM_DDR_PLL_CNTL,
.shift = 30,
.width = 1,
},
.m = {
.reg_off = AM_DDR_PLL_CNTL,
.shift = 0,
.width = 9,
},
.n = {
.reg_off = AM_DDR_PLL_CNTL,
.shift = 9,
.width = 5,
},
.l = {
.reg_off = AM_DDR_PLL_CNTL,
.shift = 31,
.width = 1,
},
.rst = {
.reg_off = AM_DDR_PLL_CNTL,
.shift = 29,
.width = 1,
},
},
.hw.init = &(struct clk_init_data){
.name = "ddr_pll_dco",
.ops = &meson_clk_pll_ro_ops,
.parent_data = &(const struct clk_parent_data) {
.fw_name = "xtal",
},
.num_parents = 1,
},
};
static struct clk_regmap meson8_ddr_pll = {
.data = &(struct clk_regmap_div_data){
.offset = AM_DDR_PLL_CNTL,
.shift = 16,
.width = 2,
.flags = CLK_DIVIDER_POWER_OF_TWO,
},
.hw.init = &(struct clk_init_data){
.name = "ddr_pll",
.ops = &clk_regmap_divider_ro_ops,
.parent_hws = (const struct clk_hw *[]) {
&meson8_ddr_pll_dco.hw
},
.num_parents = 1,
},
};
static struct clk_hw *meson8_ddr_hw_clks[] = {
[DDR_CLKID_DDR_PLL_DCO] = &meson8_ddr_pll_dco.hw,
[DDR_CLKID_DDR_PLL] = &meson8_ddr_pll.hw,
};
static const struct meson_clkc_data meson8_ddr_clkc_data = {
.hw_clks = {
.hws = meson8_ddr_hw_clks,
.num = ARRAY_SIZE(meson8_ddr_hw_clks),
},
};
static const struct of_device_id meson8_ddr_clkc_match_table[] = {
{
.compatible = "amlogic,meson8-ddr-clkc",
.data = &meson8_ddr_clkc_data,
}, {
.compatible = "amlogic,meson8b-ddr-clkc",
.data = &meson8_ddr_clkc_data,
},
{ /* sentinel */ }
};
static struct platform_driver meson8_ddr_clkc_driver = {
.probe = meson_clkc_mmio_probe,
.driver = {
.name = "meson8-ddr-clkc",
.of_match_table = meson8_ddr_clkc_match_table,
},
};
builtin_platform_driver(meson8_ddr_clkc_driver);
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