mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +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>
65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
From 34737eb8d0daa0d4183f10286a2f55d8788066bc Mon Sep 17 00:00:00 2001
|
|
From: Jia-Wei Chang <jia-wei.chang@mediatek.com>
|
|
Date: Fri, 22 Apr 2022 15:52:29 +0800
|
|
Subject: [PATCH 06/21] cpufreq: mediatek: Record previous target vproc value
|
|
|
|
We found the buck voltage may not be exactly the same with what we set
|
|
because CPU may share the same buck with other module.
|
|
Therefore, we need to record the previous desired value instead of reading
|
|
it from regulators.
|
|
|
|
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 | 20 ++++++++++++++++----
|
|
1 file changed, 16 insertions(+), 4 deletions(-)
|
|
|
|
--- a/drivers/cpufreq/mediatek-cpufreq.c
|
|
+++ b/drivers/cpufreq/mediatek-cpufreq.c
|
|
@@ -40,6 +40,7 @@ struct mtk_cpu_dvfs_info {
|
|
struct list_head list_head;
|
|
int intermediate_voltage;
|
|
bool need_voltage_tracking;
|
|
+ int pre_vproc;
|
|
};
|
|
|
|
static struct platform_device *cpufreq_pdev;
|
|
@@ -193,11 +194,17 @@ static int mtk_cpufreq_voltage_tracking(
|
|
|
|
static int mtk_cpufreq_set_voltage(struct mtk_cpu_dvfs_info *info, int vproc)
|
|
{
|
|
+ int ret;
|
|
+
|
|
if (info->need_voltage_tracking)
|
|
- return mtk_cpufreq_voltage_tracking(info, vproc);
|
|
+ ret = mtk_cpufreq_voltage_tracking(info, vproc);
|
|
else
|
|
- return regulator_set_voltage(info->proc_reg, vproc,
|
|
- vproc + VOLT_TOL);
|
|
+ ret = regulator_set_voltage(info->proc_reg, vproc,
|
|
+ MAX_VOLT_LIMIT);
|
|
+ if (!ret)
|
|
+ info->pre_vproc = vproc;
|
|
+
|
|
+ return ret;
|
|
}
|
|
|
|
static int mtk_cpufreq_set_target(struct cpufreq_policy *policy,
|
|
@@ -215,7 +222,12 @@ static int mtk_cpufreq_set_target(struct
|
|
inter_vproc = info->intermediate_voltage;
|
|
|
|
pre_freq_hz = clk_get_rate(cpu_clk);
|
|
- pre_vproc = regulator_get_voltage(info->proc_reg);
|
|
+
|
|
+ if (unlikely(info->pre_vproc <= 0))
|
|
+ pre_vproc = regulator_get_voltage(info->proc_reg);
|
|
+ else
|
|
+ pre_vproc = info->pre_vproc;
|
|
+
|
|
if (pre_vproc < 0) {
|
|
dev_err(cpu_dev, "invalid Vproc value: %d\n", pre_vproc);
|
|
return pre_vproc;
|