// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2018, The Linux Foundation. All rights reserved.
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/regmap.h>
#include "clk-regmap.h"
#include "clk-hfpll.h"
static const struct hfpll_data qcs404 = {
.mode_reg = 0 x00,
.l_reg = 0 x04,
.m_reg = 0 x08,
.n_reg = 0 x0c,
.user_reg = 0 x10,
.config_reg = 0 x14,
.config_val = 0 x430405d,
.status_reg = 0 x1c,
.lock_bit = 16 ,
.user_val = 0 x8,
.user_vco_mask = 0 x100000,
.low_vco_max_rate = 1248000000 ,
.min_rate = 537600000 UL,
.max_rate = 2900000000 UL,
};
static const struct hfpll_data msm8976_a53 = {
.mode_reg = 0 x00,
.l_reg = 0 x04,
.m_reg = 0 x08,
.n_reg = 0 x0c,
.user_reg = 0 x10,
.config_reg = 0 x14,
.config_val = 0 x341600,
.status_reg = 0 x1c,
.lock_bit = 16 ,
.l_val = 0 x35,
.user_val = 0 x109,
.min_rate = 902400000 UL,
.max_rate = 1478400000 UL,
};
static const struct hfpll_data msm8976_a72 = {
.mode_reg = 0 x00,
.l_reg = 0 x04,
.m_reg = 0 x08,
.n_reg = 0 x0c,
.user_reg = 0 x10,
.config_reg = 0 x14,
.config_val = 0 x4e0405d,
.status_reg = 0 x1c,
.lock_bit = 16 ,
.l_val = 0 x3e,
.user_val = 0 x100109,
.min_rate = 940800000 UL,
.max_rate = 2016000000 UL,
};
static const struct hfpll_data msm8976_cci = {
.mode_reg = 0 x00,
.l_reg = 0 x04,
.m_reg = 0 x08,
.n_reg = 0 x0c,
.user_reg = 0 x10,
.config_reg = 0 x14,
.config_val = 0 x141400,
.status_reg = 0 x1c,
.lock_bit = 16 ,
.l_val = 0 x20,
.user_val = 0 x100109,
.min_rate = 556800000 UL,
.max_rate = 902400000 UL,
};
static const struct of_device_id qcom_hfpll_match_table[] = {
{ .compatible = "qcom,msm8976-hfpll-a53" , .data = &msm8976_a53 },
{ .compatible = "qcom,msm8976-hfpll-a72" , .data = &msm8976_a72 },
{ .compatible = "qcom,msm8976-hfpll-cci" , .data = &msm8976_cci },
{ .compatible = "qcom,qcs404-hfpll" , .data = &qcs404 },
/* Deprecated in bindings */
{ .compatible = "qcom,hfpll" , .data = &qcs404 },
{ }
};
MODULE_DEVICE_TABLE(of, qcom_hfpll_match_table);
static const struct regmap_config hfpll_regmap_config = {
.reg_bits = 32 ,
.reg_stride = 4 ,
.val_bits = 32 ,
.max_register = 0 x30,
.fast_io = true ,
};
static int qcom_hfpll_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
void __iomem *base;
struct regmap *regmap;
struct clk_hfpll *h;
struct clk_init_data init = {
.num_parents = 1 ,
.ops = &clk_ops_hfpll,
/*
* rather than marking the clock critical and forcing the clock
* to be always enabled , we make sure that the clock is not
* disabled : the firmware remains responsible of enabling this
* clock ( for more info check the commit log )
*/
.flags = CLK_IGNORE_UNUSED,
};
int ret;
struct clk_parent_data pdata = { .index = 0 };
h = devm_kzalloc(dev, sizeof (*h), GFP_KERNEL);
if (!h)
return -ENOMEM;
base = devm_platform_get_and_ioremap_resource(pdev, 0 , NULL);
if (IS_ERR(base))
return PTR_ERR(base);
regmap = devm_regmap_init_mmio(&pdev->dev, base, &hfpll_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
if (of_property_read_string_index(dev->of_node, "clock-output-names" ,
0 , &init.name))
return -ENODEV;
init.parent_data = &pdata;
h->d = of_device_get_match_data(&pdev->dev);
h->clkr.hw.init = &init;
spin_lock_init(&h->lock);
ret = devm_clk_register_regmap(dev, &h->clkr);
if (ret) {
dev_err(dev, "failed to register regmap clock: %d\n" , ret);
return ret;
}
return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
&h->clkr.hw);
}
static struct platform_driver qcom_hfpll_driver = {
.probe = qcom_hfpll_probe,
.driver = {
.name = "qcom-hfpll" ,
.of_match_table = qcom_hfpll_match_table,
},
};
module_platform_driver(qcom_hfpll_driver);
MODULE_DESCRIPTION("QCOM HFPLL Clock Driver" );
MODULE_LICENSE("GPL v2" );
MODULE_ALIAS("platform:qcom-hfpll" );
Messung V0.5 in Prozent C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-09-29)
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