arm64: dts: qcom: sm4250: 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
QRB4210 RB2. QRB4210 is based on sm4250 which has a slightly different
lpass pin controller comparing to sm6115.

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

Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
Link: https://lore.kernel.org/r/20241112025306.712122-4-alexey.klimov@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sm4250.dtsi b/arch/arm64/boot/dts/qcom/sm4250.dtsi
index a0ed61925e12d63f8b9d2fb5d31cc7480c85a66f..cd8c8e59976e5dc4b48d0e14566cf142895711d5 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sm4250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm4250.dtsi
@@ -36,3 +36,42 @@
 &cpu7 {
        compatible = "qcom,kryo240";
 };
+
+&lpass_tlmm {
+       compatible = "qcom,sm4250-lpass-lpi-pinctrl";
+       gpio-ranges = <&lpass_tlmm 0 0 27>;
+
+       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;
+               };
+
+               ext-mclk1-pins {
+                       pins = "gpio18";
+                       function = "ext_mclk1_a";
+                       bias-disable;
+                       drive-strength = <16>;
+                       output-high;
+               };
+       };
+};