diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.15/350-09-cpufreq-mediatek-Move-voltage-limits-to-platform-dat.patch')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/350-09-cpufreq-mediatek-Move-voltage-limits-to-platform-dat.patch | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/350-09-cpufreq-mediatek-Move-voltage-limits-to-platform-dat.patch b/target/linux/mediatek/patches-5.15/350-09-cpufreq-mediatek-Move-voltage-limits-to-platform-dat.patch new file mode 100644 index 0000000000..23b319648d --- /dev/null +++ b/target/linux/mediatek/patches-5.15/350-09-cpufreq-mediatek-Move-voltage-limits-to-platform-dat.patch @@ -0,0 +1,227 @@ +From be2354b064e6bafbbad599ae2e10569ba4f7d5a6 Mon Sep 17 00:00:00 2001 +From: Rex-BC Chen <rex-bc.chen@mediatek.com> +Date: Thu, 5 May 2022 19:52:19 +0800 +Subject: [PATCH 09/21] cpufreq: mediatek: Move voltage limits to platform data + +Voltages and shifts are defined as macros originally. +There are different requirements of these values for each MediaTek SoCs. +Therefore, we add the platform data and move these values into it. + +Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com> +Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com> +Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> +Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> +--- + drivers/cpufreq/mediatek-cpufreq.c | 84 +++++++++++++++++++++--------- + 1 file changed, 58 insertions(+), 26 deletions(-) + +--- a/drivers/cpufreq/mediatek-cpufreq.c ++++ b/drivers/cpufreq/mediatek-cpufreq.c +@@ -10,15 +10,21 @@ + #include <linux/cpumask.h> + #include <linux/module.h> + #include <linux/of.h> ++#include <linux/of_platform.h> + #include <linux/platform_device.h> + #include <linux/pm_opp.h> + #include <linux/regulator/consumer.h> + +-#define MIN_VOLT_SHIFT (100000) +-#define MAX_VOLT_SHIFT (200000) +-#define MAX_VOLT_LIMIT (1150000) + #define VOLT_TOL (10000) + ++struct mtk_cpufreq_platform_data { ++ int min_volt_shift; ++ int max_volt_shift; ++ int proc_max_volt; ++ int sram_min_volt; ++ int sram_max_volt; ++}; ++ + /* + * The struct mtk_cpu_dvfs_info holds necessary information for doing CPU DVFS + * on each CPU power/clock domain of Mediatek SoCs. Each CPU cluster in +@@ -41,6 +47,7 @@ struct mtk_cpu_dvfs_info { + int intermediate_voltage; + bool need_voltage_tracking; + int pre_vproc; ++ const struct mtk_cpufreq_platform_data *soc_data; + }; + + static struct platform_device *cpufreq_pdev; +@@ -62,6 +69,7 @@ static struct mtk_cpu_dvfs_info *mtk_cpu + static int mtk_cpufreq_voltage_tracking(struct mtk_cpu_dvfs_info *info, + int new_vproc) + { ++ const struct mtk_cpufreq_platform_data *soc_data = info->soc_data; + struct regulator *proc_reg = info->proc_reg; + struct regulator *sram_reg = info->sram_reg; + int pre_vproc, pre_vsram, new_vsram, vsram, vproc, ret; +@@ -73,7 +81,8 @@ static int mtk_cpufreq_voltage_tracking( + return pre_vproc; + } + /* Vsram should not exceed the maximum allowed voltage of SoC. */ +- new_vsram = min(new_vproc + MIN_VOLT_SHIFT, MAX_VOLT_LIMIT); ++ new_vsram = min(new_vproc + soc_data->min_volt_shift, ++ soc_data->sram_max_volt); + + if (pre_vproc < new_vproc) { + /* +@@ -96,10 +105,11 @@ static int mtk_cpufreq_voltage_tracking( + return pre_vproc; + } + +- vsram = min(new_vsram, pre_vproc + MAX_VOLT_SHIFT); ++ vsram = min(new_vsram, ++ pre_vproc + soc_data->min_volt_shift); + +- if (vsram + VOLT_TOL >= MAX_VOLT_LIMIT) { +- vsram = MAX_VOLT_LIMIT; ++ if (vsram + VOLT_TOL >= soc_data->sram_max_volt) { ++ vsram = soc_data->sram_max_volt; + + /* + * If the target Vsram hits the maximum voltage, +@@ -117,7 +127,7 @@ static int mtk_cpufreq_voltage_tracking( + ret = regulator_set_voltage(sram_reg, vsram, + vsram + VOLT_TOL); + +- vproc = vsram - MIN_VOLT_SHIFT; ++ vproc = vsram - soc_data->min_volt_shift; + } + if (ret) + return ret; +@@ -151,7 +161,8 @@ static int mtk_cpufreq_voltage_tracking( + return pre_vsram; + } + +- vproc = max(new_vproc, pre_vsram - MAX_VOLT_SHIFT); ++ vproc = max(new_vproc, ++ pre_vsram - soc_data->max_volt_shift); + ret = regulator_set_voltage(proc_reg, vproc, + vproc + VOLT_TOL); + if (ret) +@@ -160,10 +171,11 @@ static int mtk_cpufreq_voltage_tracking( + if (vproc == new_vproc) + vsram = new_vsram; + else +- vsram = max(new_vsram, vproc + MIN_VOLT_SHIFT); ++ vsram = max(new_vsram, ++ vproc + soc_data->min_volt_shift); + +- if (vsram + VOLT_TOL >= MAX_VOLT_LIMIT) { +- vsram = MAX_VOLT_LIMIT; ++ if (vsram + VOLT_TOL >= soc_data->sram_max_volt) { ++ vsram = soc_data->sram_max_volt; + + /* + * If the target Vsram hits the maximum voltage, +@@ -194,13 +206,14 @@ static int mtk_cpufreq_voltage_tracking( + + static int mtk_cpufreq_set_voltage(struct mtk_cpu_dvfs_info *info, int vproc) + { ++ const struct mtk_cpufreq_platform_data *soc_data = info->soc_data; + int ret; + + if (info->need_voltage_tracking) + ret = mtk_cpufreq_voltage_tracking(info, vproc); + else + ret = regulator_set_voltage(info->proc_reg, vproc, +- MAX_VOLT_LIMIT); ++ soc_data->proc_max_volt); + if (!ret) + info->pre_vproc = vproc; + +@@ -509,9 +522,17 @@ static struct cpufreq_driver mtk_cpufreq + + static int mtk_cpufreq_probe(struct platform_device *pdev) + { ++ const struct mtk_cpufreq_platform_data *data; + struct mtk_cpu_dvfs_info *info, *tmp; + int cpu, ret; + ++ data = dev_get_platdata(&pdev->dev); ++ if (!data) { ++ dev_err(&pdev->dev, ++ "failed to get mtk cpufreq platform data\n"); ++ return -ENODEV; ++ } ++ + for_each_possible_cpu(cpu) { + info = mtk_cpu_dvfs_info_lookup(cpu); + if (info) +@@ -523,6 +544,7 @@ static int mtk_cpufreq_probe(struct plat + goto release_dvfs_info_list; + } + ++ info->soc_data = data; + ret = mtk_cpu_dvfs_info_init(info, cpu); + if (ret) { + dev_err(&pdev->dev, +@@ -558,20 +580,27 @@ static struct platform_driver mtk_cpufre + .probe = mtk_cpufreq_probe, + }; + ++static const struct mtk_cpufreq_platform_data mt2701_platform_data = { ++ .min_volt_shift = 100000, ++ .max_volt_shift = 200000, ++ .proc_max_volt = 1150000, ++ .sram_min_volt = 0, ++ .sram_max_volt = 1150000, ++}; ++ + /* List of machines supported by this driver */ + static const struct of_device_id mtk_cpufreq_machines[] __initconst = { +- { .compatible = "mediatek,mt2701", }, +- { .compatible = "mediatek,mt2712", }, +- { .compatible = "mediatek,mt7622", }, +- { .compatible = "mediatek,mt7623", }, +- { .compatible = "mediatek,mt8167", }, +- { .compatible = "mediatek,mt817x", }, +- { .compatible = "mediatek,mt8173", }, +- { .compatible = "mediatek,mt8176", }, +- { .compatible = "mediatek,mt8183", }, +- { .compatible = "mediatek,mt8365", }, +- { .compatible = "mediatek,mt8516", }, +- ++ { .compatible = "mediatek,mt2701", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt2712", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt7622", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt7623", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8167", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt817x", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8173", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8176", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8183", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8365", .data = &mt2701_platform_data }, ++ { .compatible = "mediatek,mt8516", .data = &mt2701_platform_data }, + { } + }; + MODULE_DEVICE_TABLE(of, mtk_cpufreq_machines); +@@ -580,6 +609,7 @@ static int __init mtk_cpufreq_driver_ini + { + struct device_node *np; + const struct of_device_id *match; ++ const struct mtk_cpufreq_platform_data *data; + int err; + + np = of_find_node_by_path("/"); +@@ -592,6 +622,7 @@ static int __init mtk_cpufreq_driver_ini + pr_debug("Machine is not compatible with mtk-cpufreq\n"); + return -ENODEV; + } ++ data = match->data; + + err = platform_driver_register(&mtk_cpufreq_platdrv); + if (err) +@@ -603,7 +634,8 @@ static int __init mtk_cpufreq_driver_ini + * and the device registration codes are put here to handle defer + * probing. + */ +- cpufreq_pdev = platform_device_register_simple("mtk-cpufreq", -1, NULL, 0); ++ cpufreq_pdev = platform_device_register_data(NULL, "mtk-cpufreq", -1, ++ data, sizeof(*data)); + if (IS_ERR(cpufreq_pdev)) { + pr_err("failed to register mtk-cpufreq platform device\n"); + platform_driver_unregister(&mtk_cpufreq_platdrv); |