diff options
Diffstat (limited to 'drivers/clk/qcom/apss-ipq-pll.c')
| -rw-r--r-- | drivers/clk/qcom/apss-ipq-pll.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c new file mode 100644 index 0000000000..41279e5437 --- /dev/null +++ b/drivers/clk/qcom/apss-ipq-pll.c @@ -0,0 +1,216 @@ +// 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_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, + }, + }, +}; + +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 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_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,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"); |