From 8cd79b729e746cb167f1563d015a93fc0a079899 Mon Sep 17 00:00:00 2001 From: Christopher Obbard Date: Fri, 13 Oct 2023 12:47:27 +0100 Subject: arm64: dts: rockchip: Fix i2s0 pin conflict on ROCK Pi 4 boards Commit 91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399") modified i2s0 to switch the corresponding pins off when idle. For the ROCK Pi 4 boards, this means that i2s0 has the following pinctrl setting: pinctrl-names = "bclk_on", "bclk_off"; pinctrl-0 = <&i2s0_2ch_bus>; pinctrl-1 = <&i2s0_8ch_bus_bclk_off>; Due to this change, i2s0 fails to probe on my Radxa ROCK 4SE and ROCK Pi 4B boards: rockchip-pinctrl pinctrl: pin gpio3-29 already requested by leds; cannot claim for ff880000.i2s rockchip-pinctrl pinctrl: pin-125 (ff880000.i2s) status -22 rockchip-pinctrl pinctrl: could not request pin 125 (gpio3-29) from group i2s0-8ch-bus-bclk-off on device rockchip-pinctrl rockchip-i2s ff880000.i2s: Error applying setting, reverse things back rockchip-i2s ff880000.i2s: bclk disable failed -22 A pin requested for i2s0_8ch_bus_bclk_off has already been requested by user_led2, so whichever driver probes first will have the pin allocated. The hardware uses 2-channel i2s so fix this error by setting pinctl-1 to i2s0_2ch_bus_bclk_off which doesn't contain the pin allocated to user_led2. I checked the schematics for all Radxa boards based on ROCK Pi 4 and this change is compatible with all boards. Fixes: 91419ae0420f ("arm64: dts: rockchip: use BCLK to GPIO switch on rk3399") Signed-off-by: Christopher Obbard Link: https://lore.kernel.org/r/20231013114737.494410-3-chris.obbard@collabora.com Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi | 1 + 1 file changed, 1 insertion(+) (limited to 'arch') 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 7dccbe8a9393..f2279aa6ca9e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi @@ -492,6 +492,7 @@ &i2s0 { pinctrl-0 = <&i2s0_2ch_bus>; + pinctrl-1 = <&i2s0_2ch_bus_bclk_off>; rockchip,capture-channels = <2>; rockchip,playback-channels = <2>; status = "okay"; -- cgit