// 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" }, { } }; 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");