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// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2018, The Linux Foundation. All rights reserved.
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "clk-alpha-pll.h"
/*
* Even though APSS PLL type is of existing one (like Huayra), its offsets
* are different from the one mentioned in the clk-alpha-pll.c, since the
* PLL is specific to APSS, so lets the define the same.
*/
static const u8 ipq_pll_offsets[][PLL_OFF_MAX_REGS] = {
[CLK_ALPHA_PLL_TYPE_HUAYRA] = {
[PLL_OFF_L_VAL] = 0x08,
[PLL_OFF_ALPHA_VAL] = 0x10,
[PLL_OFF_USER_CTL] = 0x18,
[PLL_OFF_CONFIG_CTL] = 0x20,
[PLL_OFF_CONFIG_CTL_U] = 0x24,
[PLL_OFF_STATUS] = 0x28,
[PLL_OFF_TEST_CTL] = 0x30,
[PLL_OFF_TEST_CTL_U] = 0x34,
},
[CLK_ALPHA_PLL_TYPE_STROMER_PLUS] = {
[PLL_OFF_L_VAL] = 0x08,
[PLL_OFF_ALPHA_VAL] = 0x10,
[PLL_OFF_ALPHA_VAL_U] = 0x14,
[PLL_OFF_USER_CTL] = 0x18,
[PLL_OFF_USER_CTL_U] = 0x1c,
[PLL_OFF_CONFIG_CTL] = 0x20,
[PLL_OFF_STATUS] = 0x28,
[PLL_OFF_TEST_CTL] = 0x30,
[PLL_OFF_TEST_CTL_U] = 0x34,
},
};
static struct clk_alpha_pll ipq_pll_huayra = {
.offset = 0x0,
.regs = ipq_pll_offsets[CLK_ALPHA_PLL_TYPE_HUAYRA],
.flags = SUPPORTS_DYNAMIC_UPDATE,
.clkr = {
.enable_reg = 0x0,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "a53pll",
.parent_data = &(const struct clk_parent_data) {
.fw_name = "xo",
},
.num_parents = 1,
.ops = &clk_alpha_pll_huayra_ops,
},
},
};
static struct clk_alpha_pll ipq_pll_stromer = {
.offset = 0x0,
/*
* Reuse CLK_ALPHA_PLL_TYPE_STROMER_PLUS register offsets.
* Although this is a bit confusing, but the offset values
* are correct nevertheless.
*/
.regs = ipq_pll_offsets[CLK_ALPHA_PLL_TYPE_STROMER_PLUS],
.flags = SUPPORTS_DYNAMIC_UPDATE,
.clkr = {
.enable_reg = 0x0,
.enable_mask = BIT(0),
.hw.init = &(const struct clk_init_data) {
.name = "a53pll",
.parent_data = &(const struct clk_parent_data) {
.fw_name = "xo",
},
.num_parents = 1,
.ops = &clk_alpha_pll_stromer_ops,
},
},
};
static struct clk_alpha_pll ipq_pll_stromer_plus = {
.offset = 0x0,
.regs = ipq_pll_offsets[CLK_ALPHA_PLL_TYPE_STROMER_PLUS],
.flags = SUPPORTS_DYNAMIC_UPDATE,
.clkr = {
.enable_reg = 0x0,
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "a53pll",
.parent_data = &(const struct clk_parent_data) {
.fw_name = "xo",
},
.num_parents = 1,
.ops = &clk_alpha_pll_stromer_plus_ops,
},
},
};
/* 1.008 GHz configuration */
static const struct alpha_pll_config ipq5018_pll_config = {
.l = 0x2a,
.config_ctl_val = 0x4001075b,
.config_ctl_hi_val = 0x304,
.main_output_mask = BIT(0),
.aux_output_mask = BIT(1),
.early_output_mask = BIT(3),
.alpha_en_mask = BIT(24),
.status_val = 0x3,
.status_mask = GENMASK(10, 8),
.lock_det = BIT(2),
.test_ctl_hi_val = 0x00400003,
};
static const struct alpha_pll_config ipq5332_pll_config = {
.l = 0x2d,
.config_ctl_val = 0x4001075b,
.config_ctl_hi_val = 0x304,
.main_output_mask = BIT(0),
.aux_output_mask = BIT(1),
.early_output_mask = BIT(3),
.alpha_en_mask = BIT(24),
.status_val = 0x3,
.status_mask = GENMASK(10, 8),
.lock_det = BIT(2),
.test_ctl_hi_val = 0x00400003,
};
static const struct alpha_pll_config ipq6018_pll_config = {
.l = 0x37,
.config_ctl_val = 0x240d4828,
.config_ctl_hi_val = 0x6,
.early_output_mask = BIT(3),
.aux2_output_mask = BIT(2),
.aux_output_mask = BIT(1),
.main_output_mask = BIT(0),
.test_ctl_val = 0x1c0000C0,
.test_ctl_hi_val = 0x4000,
};
static const struct alpha_pll_config ipq8074_pll_config = {
.l = 0x48,
.config_ctl_val = 0x200d4828,
.config_ctl_hi_val = 0x6,
.early_output_mask = BIT(3),
.aux2_output_mask = BIT(2),
.aux_output_mask = BIT(1),
.main_output_mask = BIT(0),
.test_ctl_val = 0x1c000000,
.test_ctl_hi_val = 0x4000,
};
static const struct alpha_pll_config ipq9574_pll_config = {
.l = 0x3b,
.config_ctl_val = 0x200d4828,
.config_ctl_hi_val = 0x6,
.early_output_mask = BIT(3),
.aux2_output_mask = BIT(2),
.aux_output_mask = BIT(1),
.main_output_mask = BIT(0),
.test_ctl_val = 0x0,
.test_ctl_hi_val = 0x4000,
};
struct apss_pll_data {
int pll_type;
struct clk_alpha_pll *pll;
const struct alpha_pll_config *pll_config;
};
static const struct apss_pll_data ipq5018_pll_data = {
.pll_type = CLK_ALPHA_PLL_TYPE_STROMER,
.pll = &ipq_pll_stromer,
.pll_config = &ipq5018_pll_config,
};
static struct apss_pll_data ipq5332_pll_data = {
.pll_type = CLK_ALPHA_PLL_TYPE_STROMER_PLUS,
.pll = &ipq_pll_stromer_plus,
.pll_config = &ipq5332_pll_config,
};
static struct apss_pll_data ipq8074_pll_data = {
.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
.pll = &ipq_pll_huayra,
.pll_config = &ipq8074_pll_config,
};
static struct apss_pll_data ipq6018_pll_data = {
.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
.pll = &ipq_pll_huayra,
.pll_config = &ipq6018_pll_config,
};
static struct apss_pll_data ipq9574_pll_data = {
.pll_type = CLK_ALPHA_PLL_TYPE_HUAYRA,
.pll = &ipq_pll_huayra,
.pll_config = &ipq9574_pll_config,
};
static const struct regmap_config ipq_pll_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.max_register = 0x40,
.fast_io = true,
};
static int apss_ipq_pll_probe(struct platform_device *pdev)
{
const struct apss_pll_data *data;
struct device *dev = &pdev->dev;
struct regmap *regmap;
void __iomem *base;
int ret;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
regmap = devm_regmap_init_mmio(dev, base, &ipq_pll_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
data = of_device_get_match_data(&pdev->dev);
if (!data)
return -ENODEV;
if (data->pll_type == CLK_ALPHA_PLL_TYPE_HUAYRA)
clk_alpha_pll_configure(data->pll, regmap, data->pll_config);
else if (data->pll_type == CLK_ALPHA_PLL_TYPE_STROMER ||
data->pll_type == CLK_ALPHA_PLL_TYPE_STROMER_PLUS)
clk_stromer_pll_configure(data->pll, regmap, data->pll_config);
ret = devm_clk_register_regmap(dev, &data->pll->clkr);
if (ret)
return ret;
return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
&data->pll->clkr.hw);
}
static const struct of_device_id apss_ipq_pll_match_table[] = {
{ .compatible = "qcom,ipq5018-a53pll", .data = &ipq5018_pll_data },
{ .compatible = "qcom,ipq5332-a53pll", .data = &ipq5332_pll_data },
{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_data },
{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_data },
{ .compatible = "qcom,ipq9574-a73pll", .data = &ipq9574_pll_data },
{ }
};
MODULE_DEVICE_TABLE(of, apss_ipq_pll_match_table);
static struct platform_driver apss_ipq_pll_driver = {
.probe = apss_ipq_pll_probe,
.driver = {
.name = "qcom-ipq-apss-pll",
.of_match_table = apss_ipq_pll_match_table,
},
};
module_platform_driver(apss_ipq_pll_driver);
MODULE_DESCRIPTION("Qualcomm technology Inc APSS ALPHA PLL Driver");
MODULE_LICENSE("GPL v2");
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