96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
// 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/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#include "clk-alpha-pll.h"
|
|
|
|
static const u8 ipq_pll_offsets[] = {
|
|
[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,
|
|
};
|
|
|
|
static struct clk_alpha_pll ipq_pll = {
|
|
.offset = 0x0,
|
|
.regs = ipq_pll_offsets,
|
|
.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 const struct alpha_pll_config ipq_pll_config = {
|
|
.l = 0x37,
|
|
.config_ctl_val = 0x04141200,
|
|
.config_ctl_hi_val = 0x0,
|
|
.early_output_mask = BIT(3),
|
|
.main_output_mask = BIT(0),
|
|
};
|
|
|
|
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)
|
|
{
|
|
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);
|
|
|
|
clk_alpha_pll_configure(&ipq_pll, regmap, &ipq_pll_config);
|
|
|
|
ret = devm_clk_register_regmap(dev, &ipq_pll.clkr);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
|
|
&ipq_pll.clkr.hw);
|
|
}
|
|
|
|
static const struct of_device_id apss_ipq_pll_match_table[] = {
|
|
{ .compatible = "qcom,ipq6018-a53pll" },
|
|
{ }
|
|
};
|
|
|
|
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");
|