This is a note to let you know that I've just added the patch titled arm64: dts: rockchip: fix audio-supply for Rock Pi 4 to the 5.15-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-fix-audio-supply-for-rock-pi-4.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 7723fb0f41657d82c10e635dc71cdab4b1656c58 Author: Alex Bee <knaerzche@xxxxxxxxx> Date: Wed Oct 27 16:37:25 2021 +0200 arm64: dts: rockchip: fix audio-supply for Rock Pi 4 [ Upstream commit 8240e87f16d17a9592c9d67857a3dcdbcb98f10d ] As stated in the schematics [1] and [2] P5 the APIO5 domain is supplied by RK808-D Buck4, which in our case vcc1v8_codec - i.e. a 1.8 V regulator. Currently only white noise comes from the ES8316's output, which - for whatever reason - came up only after the the correct switch from i2s0_8ch_bus to i2s0_2ch_bus for i2s0's pinctrl was done. Fix this by setting the correct regulator for audio-supply. [1] https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi4_v13_sch_20181112.pdf [2] https://dl.radxa.com/rockpi4/docs/hw/rockpi4/rockpi_4c_v12_sch_20200620.pdf Fixes: 1b5715c602fd ("arm64: dts: rockchip: add ROCK Pi 4 DTS support") Signed-off-by: Alex Bee <knaerzche@xxxxxxxxx> Link: https://lore.kernel.org/r/20211027143726.165809-1-knaerzche@xxxxxxxxx Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi index b28888ea9262e..100a769165ef9 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi @@ -457,7 +457,7 @@ &io_domains { status = "okay"; bt656-supply = <&vcc_3v0>; - audio-supply = <&vcc_3v0>; + audio-supply = <&vcc1v8_codec>; sdmmc-supply = <&vcc_sdio>; gpio1830-supply = <&vcc_3v0>; };