From b7211dbb4da677436979e70c65bfecd81030c5e7 Mon Sep 17 00:00:00 2001 From: Nick Hollinghurst Date: Tue, 11 Feb 2025 13:11:07 +0000 Subject: [PATCH] arm64: dts: Add the Audio Out block to rp1.dtsi Change the standard rate of PLL_AUDIO_SEC from 192MHz to 153.6MHz to suit audio out. Declare audio out hardware and give it a named pin control. Signed-off-by: Nick Hollinghurst --- arch/arm64/boot/dts/broadcom/rp1.dtsi | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) --- a/arch/arm64/boot/dts/broadcom/rp1.dtsi +++ b/arch/arm64/boot/dts/broadcom/rp1.dtsi @@ -49,7 +49,7 @@ <125000000>, // RP1_PLL_SYS_SEC <125000000>, // RP1_CLK_ETH <61440000>, // RP1_PLL_AUDIO - <192000000>, // RP1_PLL_AUDIO_SEC + <153600000>, // RP1_PLL_AUDIO_SEC <200000000>, // RP1_CLK_SYS <100000000>, // RP1_PLL_SYS_PRI_PH // Must match the XOSC frequency @@ -380,6 +380,20 @@ status = "disabled"; }; + rp1_audio_out: audio_out@94000 { + compatible = "raspberrypi,rp1-audio-out"; + reg = <0xc0 0x40094000 0x0 0x4000>; + clocks = <&rp1_clocks RP1_CLK_AUDIO_OUT>; + assigned-clocks = <&rp1_clocks RP1_CLK_AUDIO_OUT>; + assigned-clock-rates = <153600000>; + assigned-clock-parents = <&rp1_clocks RP1_PLL_AUDIO_SEC>; + dmas = <&rp1_dma RP1_DMA_AUDIO_OUT>; + dma-maxburst = <4>; + dma-names = "tx"; + #sound-dai-cells = <0>; + status = "disabled"; + }; + rp1_pwm0: pwm@98000 { compatible = "raspberrypi,rp1-pwm"; reg = <0xc0 0x40098000 0x0 0x100>; @@ -974,6 +988,12 @@ pins = "gpio52", "gpio53"; bias-pull-up; }; + + rp1_audio_out_12_13: rp1_audio_out_12_13 { + function = "aaud"; + pins = "gpio12", "gpio13"; + bias-disable; + }; }; rp1_eth: ethernet@100000 {