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@xxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Alexey Klimov <alexey.klimov@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm4250.dtsi | 39 ++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sm4250.dtsi b/arch/arm64/boot/dts/qcom/sm4250.dtsi
index a0ed61925e12..cd8c8e59976e 100644
--- a/arch/arm64/boot/dts/qcom/sm4250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm4250.dtsi
@@ -36,3 +36,42 @@ &cpu6 {
&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;
+ };
+ };
+};
--
2.45.2
