build/patch/kernel/archive/rockchip64-6.1/overlays-14-add-rk3328-pcm5102-dac.patch

From f8874f8d3cefa49ef1613686296462703a5b8c7b Mon Sep 17 00:00:00 2001
From: Paolo Sabatino <paolo.sabatino@gmail.com>
Date: Sat, 22 Apr 2023 12:31:45 +0200
Subject: [PATCH] rk3328: add dtb overlay to enable pcm5102 DAC on i2s1 bus

---
 arch/arm64/boot/dts/rockchip/overlay/Makefile |   1 +
 .../overlay/rockchip-rk3328-i2s1-pcm5102.dts  | 104 ++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/overlay/rockchip-rk3328-i2s1-pcm5102.dts

diff --git a/arch/arm64/boot/dts/rockchip/overlay/Makefile b/arch/arm64/boot/dts/rockchip/overlay/Makefile
index fe2e3e46e..b0ddfce1a 100644
--- a/arch/arm64/boot/dts/rockchip/overlay/Makefile
+++ b/arch/arm64/boot/dts/rockchip/overlay/Makefile
@@ -25,6 +25,7 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
 	rockchip-rk3318-box-wlan-ap6330.dtbo \
 	rockchip-rk3318-box-cpu-hs.dtbo \
 	rockchip-rk3318-box-emmc-hs200.dtbo \
+	rockchip-rk3328-i2s1-pcm5102.dtbo \
         rk3308-bs.dtbo rk3308-bs@1.3ghz.dtbo \
         rk3308-sdio@10mhz.dtbo rk3308-sdio@4mhz.dtbo \
         rk3308-emmc.dtbo
diff --git a/arch/arm64/boot/dts/rockchip/overlay/rockchip-rk3328-i2s1-pcm5102.dts b/arch/arm64/boot/dts/rockchip/overlay/rockchip-rk3328-i2s1-pcm5102.dts
new file mode 100644
index 000000000..5153440c0
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/overlay/rockchip-rk3328-i2s1-pcm5102.dts
@@ -0,0 +1,104 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+/*
+ * Device tree overlay to disabled internal analog codec for
+ * rk3328 boards and enable external i2s, binding it to a
+ * pcm5102-based DAC.
+ * Tested on rock-pi E, but should be suitable for other
+ * similar boards
+ */
+
+&{/} {
+
+	pcm5102: pcm510x {
+		#sound-dai-cells = <0>;
+		compatible = "ti,pcm5102a";
+		pcm510x,format = "i2s";
+		status = "okay";
+	};
+
+	i2s_sound: i2s-sound {
+		compatible = "simple-audio-card";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,name = "I2S";
+		status = "okay";
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s1>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&pcm5102>;
+		};
+	};
+
+};
+
+&analog_sound {
+	status = "disabled";
+};
+
+&codec {
+	status = "disabled";
+};
+
+&i2s1_mclk {
+	rockchip,pins = <2 RK_PB7 1 &pcfg_pull_down>;
+};
+
+&i2s1_sclk {
+	rockchip,pins = <2 RK_PC2 1 &pcfg_pull_down>;
+};
+
+&i2s1_lrckrx {
+	rockchip,pins = <2 RK_PC0 1 &pcfg_pull_up>;
+};
+
+&i2s1_lrcktx {
+	rockchip,pins = <2 RK_PC1 1 &pcfg_pull_up>;
+};
+
+&i2s1_sdi {
+	rockchip,pins = <2 RK_PC3 1 &pcfg_pull_up>;
+};
+
+&i2s1_sdo {
+	rockchip,pins = <2 RK_PC7 1 &pcfg_pull_up>;
+};
+
+&i2s1_sdio1 {
+	rockchip,pins = <2 RK_PC4 1 &pcfg_pull_up>;
+};
+
+&i2s1_sdio2 {
+	rockchip,pins = <2 RK_PC5 1 &pcfg_pull_up>;
+};
+
+&i2s1_sdio3 {
+	rockchip,pins = <2 RK_PC6 1 &pcfg_pull_up>;
+};
+
+&i2s1_sleep {
+	rockchip,pins =
+	<2 RK_PB7 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC0 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC1 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC2 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC3 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC4 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC5 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC6 RK_FUNC_GPIO &pcfg_input_high>,
+	<2 RK_PC7 RK_FUNC_GPIO &pcfg_input_high>;
+};
+
+&i2s1 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s1_mclk>, <&i2s1_sclk>, <&i2s1_lrckrx>, <&i2s1_lrcktx>, <&i2s1_sdi>, <&i2s1_sdo>, <&i2s1_sdio1>, <&i2s1_sdio2>;
+	rockchip,playback-channels = <8>;
+};
-- 
2.34.1