[PATCH v3] arm64: dts: qcom: shikra-evk: Add GPIO expanders

[Komal Bajaj]

Add the EVK GPIO expander definitions on the I2C3 bus. Describe the
TCA9538 and TCA9539 expanders used by EVK boards.

Co-developed-by: Faruque Ansari <faruque.ansari@xxxxxxxxxxxxxxxx>
Signed-off-by: Faruque Ansari <faruque.ansari@xxxxxxxxxxxxxxxx>
Signed-off-by: Komal Bajaj <komal.bajaj@xxxxxxxxxxxxxxxx>
---
Changes in v3:
- Sorted the child nodes by their unit address (sashiko, Konrad)
- Change node name to gpio from pca953x (sashiko)
- Link to v2: https://lore.kernel.org/r/20260929-shikra-gpio-expander-v2-1-98ea5808c4a6@xxxxxxxxxxxxxxxx

Changes in v2:
- Moved GPIO expander nodes to i2c3 (sashiko)
- Link to v1: https://lore.kernel.org/r/20260924-shikra-gpio-expander-v1-1-71929498ea44@xxxxxxxxxxxxxxxx
---
 arch/arm64/boot/dts/qcom/shikra-evk.dtsi | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra-evk.dtsi b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
index 7fbd6d1de19a..1c49cb52ce12 100644
--- a/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
@@ -11,6 +11,38 @@ &gpu_zap_shader {
 	firmware-name = "qcom/shikra/a704_zap.mbn";
 };
 
+&i2c3 {
+	status = "okay";
+
+	expander0: gpio@20 {
+		compatible = "ti,tca9539";
+		reg = <0x20>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
+	expander1: gpio@21 {
+		compatible = "ti,tca9539";
+		reg = <0x21>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
+	expander2: gpio@38 {
+		compatible = "ti,tca9538";
+		reg = <0x38>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
+	expander3: gpio@3c {
+		compatible = "ti,tca9538";
+		reg = <0x3c>;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+};
+
 &qupv3_0 {
 	firmware-name = "qcom/shikra/qupv3fw.elf";
 

---
base-commit: 6c2cb8b8b843d216ab549b678a0d8831c43153e0
change-id: 20260924-shikra-gpio-expander-25ff4a29c848

Best regards,
-- 
Komal Bajaj <komal.bajaj@xxxxxxxxxxxxxxxx>