From: Chen-Yu Tsai Date: Mon, 27 Oct 2025 12:56:50 +0000 (+0800) Subject: arm64: dts: allwinner: a523: Add SPDIF TX pin on PB and PI pins X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ae0d3f1e6dd2c6404db2fbd7556b93eddd6c87b8;p=thirdparty%2Fkernel%2Fstable.git arm64: dts: allwinner: a523: Add SPDIF TX pin on PB and PI pins The SPDIF TX (called OWA OUT in the datasheet) is available on three pins. Of those, the PH pin is unlikely to be used since it conflicts with the first Ethernet controller. The Radxa Cubie A5E exposes SPDIF TX through the PI pin group on the 40-pin GPIO header. The Orange Pi 4A exposes SPDIF TX through both the PB and PI pin groups on the 40-pin GPIO header. The PB pin alternatively would be used for I2S0 though. Add pinmux settings for both options so potential users can directly reference either one. Acked-by: Jernej Skrabec Link: https://patch.msgid.link/20251027125655.793277-10-wens@kernel.org Signed-off-by: Chen-Yu Tsai --- diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi index cebd8e16e845..42dab01e3f56 100644 --- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi @@ -200,6 +200,20 @@ bias-disable; }; + /omit-if-no-ref/ + spdif_out_pb_pin: spdif-pb-pin { + pins = "PB8"; + function = "spdif"; + allwinner,pinmux = <2>; + }; + + /omit-if-no-ref/ + spdif_out_pi_pin: spdif-pi-pin { + pins = "PI10"; + function = "spdif"; + allwinner,pinmux = <2>; + }; + uart0_pb_pins: uart0-pb-pins { pins = "PB9", "PB10"; allwinner,pinmux = <2>;