This is a note to let you know that I've just added the patch titled
arm64: dts: rockchip: use codec as clock master on px30-ringneck-haikou
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-rockchip-use-codec-as-clock-master-on-px30-ringneck-haikou.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 84fa1865edbb3800f3344e2a5bc73c187adf42d0 Mon Sep 17 00:00:00 2001
From: Ermin Sunj <ermin.sunj@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 7 Sep 2023 17:17:15 +0200
Subject: arm64: dts: rockchip: use codec as clock master on px30-ringneck-haikou
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
From: Ermin Sunj <ermin.sunj@xxxxxxxxxxxxxxxxxxxxx>
commit 84fa1865edbb3800f3344e2a5bc73c187adf42d0 upstream.
If the codec is not the clock master, the MCLK needs to be
synchronous to both I2S_SCL ans I2S_LRCLK. We do not have that
on Haikou, causing distorted audio.
Before:
Running an audio test script on Ringneck, 1kHz
output sine wave is not stable and shows distortion.
After:
10h audio test script loop failed only one time.
That is 0.00014% failure rate.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: c484cf93f61b ("arm64: dts: rockchip: add PX30-µQ7 (Ringneck) SoM with Haikou baseboard")
Signed-off-by: Ermin Sunj <ermin.sunj@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher@xxxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230907151725.198347-1-jakob.unterwurzacher@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
index 08a3ad3e7ae9..8792fae50257 100644
--- a/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
+++ b/arch/arm64/boot/dts/rockchip/px30-ringneck-haikou.dts
@@ -68,15 +68,15 @@ i2s0-sound {
simple-audio-card,format = "i2s";
simple-audio-card,name = "Haikou,I2S-codec";
simple-audio-card,mclk-fs = <512>;
+ simple-audio-card,frame-master = <&sgtl5000_codec>;
+ simple-audio-card,bitclock-master = <&sgtl5000_codec>;
- simple-audio-card,codec {
+ sgtl5000_codec: simple-audio-card,codec {
clocks = <&sgtl5000_clk>;
sound-dai = <&sgtl5000>;
};
simple-audio-card,cpu {
- bitclock-master;
- frame-master;
sound-dai = <&i2s0_8ch>;
};
};
--
2.42.0
Patches currently in stable-queue which might be from ermin.sunj@xxxxxxxxxxxxxxxxxxxxx are
queue-6.5/arm64-dts-rockchip-use-codec-as-clock-master-on-px30-ringneck-haikou.patch
