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mediatek: use cpufreq fix suggested by MediaTek
Use suggested fix for mediatek-cpufreq, patch will also be sent
upstream.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 7e93f520d6
)
This commit is contained in:
parent
e1d59497e9
commit
c4c14e9ce8
target/linux/mediatek/patches-5.15
@ -0,0 +1,53 @@
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From e7697814c142c99f470c3458d49e41b25a575f23 Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Fri, 26 May 2023 10:31:40 +0100
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Subject: [PATCH] cpufreq: mediatek: correct voltages for MT7622 and MT7623
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The MT6380 regulator typically used together with MT7622 does not
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support the current maximum processor and SRAM voltage in the cpufreq
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driver (1360000uV).
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For MT7622 limit processor and SRAM supply voltages to 1350000uV to
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avoid having the tracking algorithm request unsupported voltages from
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the regulator.
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On MT7623 there is no separate SRAM supply and the maximum voltage used
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is 1300000uV. Create dedicated platform data for MT7623 to cover that
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case as well.
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Fixes: 0883426fd07e3 ("cpufreq: mediatek: Raise proc and sram max voltage for MT7622/7623")
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Suggested-by: Jia-wei Chang <Jia-wei.Chang@mediatek.com>
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/cpufreq/mediatek-cpufreq.c | 13 ++++++++++---
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1 file changed, 10 insertions(+), 3 deletions(-)
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--- a/drivers/cpufreq/mediatek-cpufreq.c
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+++ b/drivers/cpufreq/mediatek-cpufreq.c
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@@ -696,9 +696,16 @@ static const struct mtk_cpufreq_platform
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static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
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.min_volt_shift = 100000,
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.max_volt_shift = 200000,
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- .proc_max_volt = 1360000,
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+ .proc_max_volt = 1350000,
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.sram_min_volt = 0,
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- .sram_max_volt = 1360000,
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+ .sram_max_volt = 1350000,
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+ .ccifreq_supported = false,
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+};
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+
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+static const struct mtk_cpufreq_platform_data mt7623_platform_data = {
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+ .min_volt_shift = 100000,
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+ .max_volt_shift = 200000,
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+ .proc_max_volt = 1300000,
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.ccifreq_supported = false,
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};
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@@ -743,7 +750,7 @@ static const struct of_device_id mtk_cpu
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{ .compatible = "mediatek,mt2701", .data = &mt2701_platform_data },
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{ .compatible = "mediatek,mt2712", .data = &mt2701_platform_data },
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{ .compatible = "mediatek,mt7622", .data = &mt7622_platform_data },
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- { .compatible = "mediatek,mt7623", .data = &mt7622_platform_data },
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+ { .compatible = "mediatek,mt7623", .data = &mt7623_platform_data },
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{ .compatible = "mediatek,mt7988", .data = &mt7988_platform_data },
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{ .compatible = "mediatek,mt8167", .data = &mt8516_platform_data },
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{ .compatible = "mediatek,mt817x", .data = &mt2701_platform_data },
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@ -1,29 +0,0 @@
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From 20aad28ba5d62f1618408c264384d0b2ad7417db Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Mon, 22 May 2023 23:25:48 +0100
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Subject: [PATCH] cpufreq: mediatek: don't request unsupported voltage
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PMICs on MT7622 and MT7623 boards only support up to 1350000uV despite
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the SoC's processor and SRAM voltage can be up to 1360000uV. As a
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work-around specify max. processor and SRAM voltage as 1350000uV to
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avoid requesting an unsupported voltage from the regulator.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/cpufreq/mediatek-cpufreq.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/cpufreq/mediatek-cpufreq.c
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+++ b/drivers/cpufreq/mediatek-cpufreq.c
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@@ -696,9 +696,9 @@ static const struct mtk_cpufreq_platform
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static const struct mtk_cpufreq_platform_data mt7622_platform_data = {
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.min_volt_shift = 100000,
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.max_volt_shift = 200000,
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- .proc_max_volt = 1360000,
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+ .proc_max_volt = 1350000,
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.sram_min_volt = 0,
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- .sram_max_volt = 1360000,
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+ .sram_max_volt = 1350000,
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.ccifreq_supported = false,
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};
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