linux-kernel - [PATCH 4/5] arm64: dts: qcom: qcm2290: add LPASS LPI pin controller

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Message-Id: <20250302-rb1_hdmi_sound_first-v1-4-81a87ae1503c@linaro.org>
Date: Sun, 02 Mar 2025 02:49:54 +0000
From: Alexey Klimov <alexey.klimov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org, 
 Alexey Klimov <alexey.klimov@...aro.org>
Subject: [PATCH 4/5] arm64: dts: qcom: qcm2290: add LPASS LPI pin
 controller

Add the Low Power Audio SubSystem Low Power Island (LPASS LPI) pin
controller device node required for audio subsystem on Qualcomm
QRB2210 RB1. QRB2210 is based on qcm2290 which is based on sm6115.

While at this, also add description of lpi_i2s2 pins (active state)
required for audio playback via HDMI/I2S.

Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 arch/arm64/boot/dts/qcom/qcm2290.dtsi | 41 +++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcm2290.dtsi b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
index 2c90047f7dd867580836284721c60ed5983f3f34..623046ba833b6da284ffa4e30e65ea4ae5fb77a2 100644
--- a/arch/arm64/boot/dts/qcom/qcm2290.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
@@ -18,6 +18,7 @@
 #include <dt-bindings/power/qcom-rpmpd.h>
 #include <dt-bindings/soc/qcom,apr.h>
 #include <dt-bindings/sound/qcom,q6asm.h>
+#include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
 
 / {
 	interrupt-parent = <&intc>;
@@ -650,6 +651,46 @@ data-pins {
 			};
 		};
 
+		lpass_tlmm: pinctrl@...0000 {
+			compatible = "qcom,qcm2290-lpass-lpi-pinctrl",
+				     "qcom,sm6115-lpass-lpi-pinctrl";
+			reg = <0x0 0x0a7c0000 0x0 0x20000>,
+			      <0x0 0x0a950000 0x0 0x10000>;
+
+			clocks = <&q6afecc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+			clock-names = "audio";
+
+			gpio-controller;
+			#gpio-cells = <2>;
+			gpio-ranges = <&lpass_tlmm 0 0 19>;
+
+			lpi_i2s2_active: lpi-i2s2-active-state {
+				sck-pins {
+					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;
+				};
+			};
+		};
+
 		gcc: clock-controller@...0000 {
 			compatible = "qcom,gcc-qcm2290";
 			reg = <0x0 0x01400000 0x0 0x1f0000>;

-- 
2.47.2