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-rw-r--r--target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-don-t-request-unsupported-voltage.patch29
1 files changed, 29 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-don-t-request-unsupported-voltage.patch b/target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-don-t-request-unsupported-voltage.patch
new file mode 100644
index 0000000000..a7a4bd8ea2
--- /dev/null
+++ b/target/linux/mediatek/patches-5.15/351-cpufreq-mediatek-don-t-request-unsupported-voltage.patch
@@ -0,0 +1,29 @@
+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,
+ };
+