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openmptcprouter/6.1/target/linux/bcm27xx/patches-6.1/950-0796-overlays-allo-katana-dac-audio-Reduce-I2C-clock.patch
2023-10-09 18:43:46 +02:00

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From d4c3133378b377ee519ea50247339cd61221fc47 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Wed, 21 Jun 2023 09:20:36 +0100
Subject: [PATCH 0796/1016] overlays: allo-katana-dac-audio: Reduce I2C clock
Higher speeds have been shown to cause data corruption on a Pi 4,
possibly due to clock-stretching.
See: https://github.com/raspberrypi/linux/issues/5511
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts b/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
index b25fd681f09f..a83fe48e2bfc 100644
--- a/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
+++ b/arch/arm/boot/dts/overlays/allo-katana-dac-audio-overlay.dts
@@ -30,6 +30,7 @@ __overlay__ {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
+ clock-frequency = <50000>;
allo-katana-codec@30 {
#sound-dai-cells = <0>;
--
2.42.0