mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 01:11:14 +00:00
e4555d69a1
Backport cpufreq changes from upstream so that the MediaTek MT7988 SoC can be supported. Signed-off-by: Daniel Golle <daniel@makrotopia.org>
118 lines
3.6 KiB
Diff
118 lines
3.6 KiB
Diff
From 342d5545e9f40496db9ae0d31c2427dd5f369a43 Mon Sep 17 00:00:00 2001
|
|
From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
|
|
Date: Fri, 8 Apr 2022 12:58:58 +0800
|
|
Subject: [PATCH 03/21] cpufreq: mediatek: Enable clocks and regulators
|
|
|
|
We need to enable regulators so that the max and min requested values will
|
|
be recorded.
|
|
The intermediate clock is not always enabled by CCF in different projects,
|
|
so we should enable it in the cpufreq driver.
|
|
|
|
Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com>
|
|
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 | 50 +++++++++++++++++++++++++++---
|
|
1 file changed, 45 insertions(+), 5 deletions(-)
|
|
|
|
--- a/drivers/cpufreq/mediatek-cpufreq.c
|
|
+++ b/drivers/cpufreq/mediatek-cpufreq.c
|
|
@@ -334,10 +334,23 @@ static int mtk_cpu_dvfs_info_init(struct
|
|
goto out_free_resources;
|
|
}
|
|
|
|
+ ret = regulator_enable(info->proc_reg);
|
|
+ if (ret) {
|
|
+ dev_warn(cpu_dev, "cpu%d: failed to enable vproc\n", cpu);
|
|
+ goto out_free_resources;
|
|
+ }
|
|
+
|
|
/* Both presence and absence of sram regulator are valid cases. */
|
|
info->sram_reg = regulator_get_exclusive(cpu_dev, "sram");
|
|
if (IS_ERR(info->sram_reg))
|
|
info->sram_reg = NULL;
|
|
+ else {
|
|
+ ret = regulator_enable(info->sram_reg);
|
|
+ if (ret) {
|
|
+ dev_warn(cpu_dev, "cpu%d: failed to enable vsram\n", cpu);
|
|
+ goto out_free_resources;
|
|
+ }
|
|
+ }
|
|
|
|
/* Get OPP-sharing information from "operating-points-v2" bindings */
|
|
ret = dev_pm_opp_of_get_sharing_cpus(cpu_dev, &info->cpus);
|
|
@@ -353,13 +366,21 @@ static int mtk_cpu_dvfs_info_init(struct
|
|
goto out_free_resources;
|
|
}
|
|
|
|
+ ret = clk_prepare_enable(info->cpu_clk);
|
|
+ if (ret)
|
|
+ goto out_free_opp_table;
|
|
+
|
|
+ ret = clk_prepare_enable(info->inter_clk);
|
|
+ if (ret)
|
|
+ goto out_disable_mux_clock;
|
|
+
|
|
/* Search a safe voltage for intermediate frequency. */
|
|
rate = clk_get_rate(info->inter_clk);
|
|
opp = dev_pm_opp_find_freq_ceil(cpu_dev, &rate);
|
|
if (IS_ERR(opp)) {
|
|
dev_err(cpu_dev, "cpu%d: failed to get intermediate opp\n", cpu);
|
|
ret = PTR_ERR(opp);
|
|
- goto out_free_opp_table;
|
|
+ goto out_disable_inter_clock;
|
|
}
|
|
info->intermediate_voltage = dev_pm_opp_get_voltage(opp);
|
|
dev_pm_opp_put(opp);
|
|
@@ -372,10 +393,21 @@ static int mtk_cpu_dvfs_info_init(struct
|
|
|
|
return 0;
|
|
|
|
+out_disable_inter_clock:
|
|
+ clk_disable_unprepare(info->inter_clk);
|
|
+
|
|
+out_disable_mux_clock:
|
|
+ clk_disable_unprepare(info->cpu_clk);
|
|
+
|
|
out_free_opp_table:
|
|
dev_pm_opp_of_cpumask_remove_table(&info->cpus);
|
|
|
|
out_free_resources:
|
|
+ if (regulator_is_enabled(info->proc_reg))
|
|
+ regulator_disable(info->proc_reg);
|
|
+ if (info->sram_reg && regulator_is_enabled(info->sram_reg))
|
|
+ regulator_disable(info->sram_reg);
|
|
+
|
|
if (!IS_ERR(info->proc_reg))
|
|
regulator_put(info->proc_reg);
|
|
if (!IS_ERR(info->sram_reg))
|
|
@@ -390,14 +422,22 @@ out_free_resources:
|
|
|
|
static void mtk_cpu_dvfs_info_release(struct mtk_cpu_dvfs_info *info)
|
|
{
|
|
- if (!IS_ERR(info->proc_reg))
|
|
+ if (!IS_ERR(info->proc_reg)) {
|
|
+ regulator_disable(info->proc_reg);
|
|
regulator_put(info->proc_reg);
|
|
- if (!IS_ERR(info->sram_reg))
|
|
+ }
|
|
+ if (!IS_ERR(info->sram_reg)) {
|
|
+ regulator_disable(info->sram_reg);
|
|
regulator_put(info->sram_reg);
|
|
- if (!IS_ERR(info->cpu_clk))
|
|
+ }
|
|
+ if (!IS_ERR(info->cpu_clk)) {
|
|
+ clk_disable_unprepare(info->cpu_clk);
|
|
clk_put(info->cpu_clk);
|
|
- if (!IS_ERR(info->inter_clk))
|
|
+ }
|
|
+ if (!IS_ERR(info->inter_clk)) {
|
|
+ clk_disable_unprepare(info->inter_clk);
|
|
clk_put(info->inter_clk);
|
|
+ }
|
|
|
|
dev_pm_opp_of_cpumask_remove_table(&info->cpus);
|
|
}
|