diff options
Diffstat (limited to 'drivers/clk/qcom/hfpll.c')
| -rw-r--r-- | drivers/clk/qcom/hfpll.c | 89 |
1 files changed, 80 insertions, 9 deletions
diff --git a/drivers/clk/qcom/hfpll.c b/drivers/clk/qcom/hfpll.c index a6de7101430c..385964196185 100644 --- a/drivers/clk/qcom/hfpll.c +++ b/drivers/clk/qcom/hfpll.c @@ -6,6 +6,7 @@ #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> @@ -13,7 +14,7 @@ #include "clk-regmap.h" #include "clk-hfpll.h" -static const struct hfpll_data hdata = { +static const struct hfpll_data qcs404 = { .mode_reg = 0x00, .l_reg = 0x04, .m_reg = 0x08, @@ -31,8 +32,64 @@ static const struct hfpll_data hdata = { .max_rate = 2900000000UL, }; +static const struct hfpll_data msm8976_a53 = { + .mode_reg = 0x00, + .l_reg = 0x04, + .m_reg = 0x08, + .n_reg = 0x0c, + .user_reg = 0x10, + .config_reg = 0x14, + .config_val = 0x341600, + .status_reg = 0x1c, + .lock_bit = 16, + + .l_val = 0x35, + .user_val = 0x109, + .min_rate = 902400000UL, + .max_rate = 1478400000UL, +}; + +static const struct hfpll_data msm8976_a72 = { + .mode_reg = 0x00, + .l_reg = 0x04, + .m_reg = 0x08, + .n_reg = 0x0c, + .user_reg = 0x10, + .config_reg = 0x14, + .config_val = 0x4e0405d, + .status_reg = 0x1c, + .lock_bit = 16, + + .l_val = 0x3e, + .user_val = 0x100109, + .min_rate = 940800000UL, + .max_rate = 2016000000UL, +}; + +static const struct hfpll_data msm8976_cci = { + .mode_reg = 0x00, + .l_reg = 0x04, + .m_reg = 0x08, + .n_reg = 0x0c, + .user_reg = 0x10, + .config_reg = 0x14, + .config_val = 0x141400, + .status_reg = 0x1c, + .lock_bit = 16, + + .l_val = 0x20, + .user_val = 0x100109, + .min_rate = 556800000UL, + .max_rate = 902400000UL, +}; + static const struct of_device_id qcom_hfpll_match_table[] = { - { .compatible = "qcom,hfpll" }, + { .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); @@ -42,28 +99,33 @@ static const struct regmap_config hfpll_regmap_config = { .reg_stride = 4, .val_bits = 32, .max_register = 0x30, - .fast_io = true, }; static int qcom_hfpll_probe(struct platform_device *pdev) { - struct resource *res; struct device *dev = &pdev->dev; void __iomem *base; struct regmap *regmap; struct clk_hfpll *h; struct clk_init_data init = { - .parent_names = (const char *[]){ "xo" }, .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; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - base = devm_ioremap_resource(dev, res); + base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); if (IS_ERR(base)) return PTR_ERR(base); @@ -75,11 +137,20 @@ static int qcom_hfpll_probe(struct platform_device *pdev) 0, &init.name)) return -ENODEV; - h->d = &hdata; + init.parent_data = &pdata; + + h->d = of_device_get_match_data(&pdev->dev); h->clkr.hw.init = &init; spin_lock_init(&h->lock); - return devm_clk_register_regmap(&pdev->dev, &h->clkr); + 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 = { |