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mediatek: use cpufreq fix suggested by MediaTek

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Use suggested fix for mediatek-cpufreq, patch will also be sent
upstream.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
This commit is contained in:
Daniel Golle 2023-05-26 13:31:26 +01:00
parent abcb30d36c
commit 7e93f520d6
2 changed files with 53 additions and 29 deletions
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53
target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-correct-voltages-for-MT7622-and-MT7.patch Normal file
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@ -0,0 +1,53 @@
From e7697814c142c99f470c3458d49e41b25a575f23 Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Fri, 26 May 2023 10:31:40 +0100
Subject: [PATCH] cpufreq: mediatek: correct voltages for MT7622 and MT7623
The MT6380 regulator typically used together with MT7622 does not
support the current maximum processor and SRAM voltage in the cpufreq
driver (1360000uV).
For MT7622 limit processor and SRAM supply voltages to 1350000uV to
avoid having the tracking algorithm request unsupported voltages from
the regulator.
On MT7623 there is no separate SRAM supply and the maximum voltage used
is 1300000uV. Create dedicated platform data for MT7623 to cover that
case as well.
Fixes: 0883426fd07e3 ("cpufreq: mediatek: Raise proc and sram max voltage for MT7622/7623")
Suggested-by: Jia-wei Chang <Jia-wei.Chang@mediatek.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/cpufreq/mediatek-cpufreq.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -696,9 +696,16 @@ static const struct mtk_cpufreq_platform
static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
.min_volt_shift = 100000,
.max_volt_shift = 200000,
- .proc_max_volt = 1360000,
+ .proc_max_volt = 1350000,
.sram_min_volt = 0,
- .sram_max_volt = 1360000,
+ .sram_max_volt = 1350000,
+ .ccifreq_supported = false,
+};
+
+static const struct mtk_cpufreq_platform_data mt7623_platform_data = {
+ .min_volt_shift = 100000,
+ .max_volt_shift = 200000,
+ .proc_max_volt = 1300000,
.ccifreq_supported = false,
};
@@ -743,7 +750,7 @@ static const struct of_device_id mtk_cpu
{ .compatible = "mediatek,mt2701", .data = &mt2701_platform_data },
{ .compatible = "mediatek,mt2712", .data = &mt2701_platform_data },
{ .compatible = "mediatek,mt7622", .data = &mt7622_platform_data },
- { .compatible = "mediatek,mt7623", .data = &mt7622_platform_data },
+ { .compatible = "mediatek,mt7623", .data = &mt7623_platform_data },
{ .compatible = "mediatek,mt7988", .data = &mt7988_platform_data },
{ .compatible = "mediatek,mt8167", .data = &mt8516_platform_data },
{ .compatible = "mediatek,mt817x", .data = &mt2701_platform_data },

29
target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-don-t-request-unsupported-voltage.patch
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@ -1,29 +0,0 @@
From 20aad28ba5d62f1618408c264384d0b2ad7417db Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 22 May 2023 23:25:48 +0100
Subject: [PATCH] cpufreq: mediatek: don't request unsupported voltage
PMICs on MT7622 and MT7623 boards only support up to 1350000uV despite
the SoC's processor and SRAM voltage can be up to 1360000uV. As a
work-around specify max. processor and SRAM voltage as 1350000uV to
avoid requesting an unsupported voltage from the regulator.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/cpufreq/mediatek-cpufreq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -696,9 +696,9 @@ static const struct mtk_cpufreq_platform
static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
.min_volt_shift = 100000,
.max_volt_shift = 200000,
- .proc_max_volt = 1360000,
+ .proc_max_volt = 1350000,
.sram_min_volt = 0,
- .sram_max_volt = 1360000,
+ .sram_max_volt = 1350000,
.ccifreq_supported = false,
};