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

[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@oss.qualcomm.com>
Signed-off-by: Faruque Ansari <faruque.ansari@oss.qualcomm.com>
Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
---
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@oss.qualcomm.com

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@oss.qualcomm.com
---
 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@oss.qualcomm.com>

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

[Konrad Dybcio]

On 10/1/26 3:49 PM, Komal Bajaj wrote:
> 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@oss.qualcomm.com>
> Signed-off-by: Faruque Ansari <faruque.ansari@oss.qualcomm.com>
> Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad> 
> ---
> base-commit: 6c2cb8b8b843d216ab549b678a0d8831c43153e0
> change-id: 20260924-shikra-gpio-expander-25ff4a29c848
> 
> Best regards,

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

[Abel Vesa]

On 26-10-01 19:19:19, Komal Bajaj wrote:
> 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@oss.qualcomm.com>
> Signed-off-by: Faruque Ansari <faruque.ansari@oss.qualcomm.com>
> Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>

Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>

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

[Bjorn Andersson]

On Thu, 01 Oct 2026 19:19:19 +0530, Komal Bajaj wrote:
> Add the EVK GPIO expander definitions on the I2C3 bus. Describe the
> TCA9538 and TCA9539 expanders used by EVK boards.

Applied, thanks!

[1/1] arm64: dts: qcom: shikra-evk: Add GPIO expanders
      commit: ea7238ab3775e6be3b8ea5b2d44c74eab6b48ee0

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>