This is required to enable to HDMI audio playback on
QRB4210 RB2 board.

Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 36 ++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index 1888d99d398b..7731681688d5 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -634,6 +634,42 @@ sdc2_card_det_n: sd-card-det-n-state {
 	};
 };
 
+&lpass_tlmm {
+	lpi_i2s2_active: lpi-i2s2-active-state {
+		sck-pin {
+			pins = "gpio10";
+			function = "i2s2_clk";
+			bias-disable;
+			drive-strength = <8>;
+			output-high;
+		};
+
+		ws-pins {
+			pins = "gpio11";
+			function = "i2s2_ws";
+			bias-disable;
+			drive-strength = <8>;
+			output-high;
+		};
+
+		data-pins {
+			pins = "gpio12";
+			function = "i2s2_data";
+			bias-disable;
+			drive-strength = <8>;
+			output-high;
+		};
+
+		ext-mclk1 {
+			pins = "gpio18";
+			function = "ext_mclk1_a";
+			bias-disable;
+			drive-strength = <16>;
+			output-high;
+		};
+	};
+};
+
 &uart3 {
 	interrupts-extended = <&intc GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>,
 			      <&tlmm 11 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.45.2

On 02/10/2024 04:20, Alexey Klimov wrote:
> This is required to enable to HDMI audio playback on
> QRB4210 RB2 board.
> 
> Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 36 ++++++++++++++++++++++++
>  1 file changed, 36 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> index 1888d99d398b..7731681688d5 100644
> --- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> +++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
> @@ -634,6 +634,42 @@ sdc2_card_det_n: sd-card-det-n-state {
>  	};
>  };
>  
> +&lpass_tlmm {
> +	lpi_i2s2_active: lpi-i2s2-active-state {
> +		sck-pin {

It does not look like you tested the DTS against bindings. Please run
`make dtbs_check W=1` (see
Documentation/devicetree/bindings/writing-schema.rst or
https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/
for instructions).

Best regards,
Krzysztof