* [PATCH v2] arm64: dts: qcom: shikra-evk: Add GPIO expanders
@ 2026-09-29 8:35 Komal Bajaj
2026-09-30 9:52 ` Konrad Dybcio
0 siblings, 1 reply; 3+ messages in thread
From: Komal Bajaj @ 2026-09-29 8:35 UTC (permalink / raw)
To: Bjorn Andersson, Konrad Dybcio, Abel Vesa, Rob Herring,
Krzysztof Kozlowski, Conor Dooley
Cc: linux-arm-msm, devicetree, linux-kernel, Faruque Ansari, 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 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 da484887110b..ecc630117940 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: pca953x@38 {
+ compatible = "ti,tca9538";
+ reg = <0x38>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ };
+
+ expander1: pca953x@3c {
+ compatible = "ti,tca9538";
+ reg = <0x3c>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ };
+
+ expander2: pca953x@20 {
+ compatible = "ti,tca9539";
+ reg = <0x20>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ };
+
+ expander3: pca953x@21 {
+ compatible = "ti,tca9539";
+ reg = <0x21>;
+ #gpio-cells = <2>;
+ gpio-controller;
+ };
+};
+
&qupv3_0 {
firmware-name = "qcom/shikra/qupv3fw.elf";
---
base-commit: 6375e61c01e93e35ee7acd336a689ac1fae4b509
change-id: 20260924-shikra-gpio-expander-25ff4a29c848
Best regards,
--
Komal Bajaj <komal.bajaj@oss.qualcomm.com>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v2] arm64: dts: qcom: shikra-evk: Add GPIO expanders
2026-09-29 8:35 [PATCH v2] arm64: dts: qcom: shikra-evk: Add GPIO expanders Komal Bajaj
@ 2026-09-30 9:52 ` Konrad Dybcio
2026-10-01 8:58 ` Komal Bajaj
0 siblings, 1 reply; 3+ messages in thread
From: Konrad Dybcio @ 2026-09-30 9:52 UTC (permalink / raw)
To: Komal Bajaj, Bjorn Andersson, Konrad Dybcio, Abel Vesa,
Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: linux-arm-msm, devicetree, linux-kernel, Faruque Ansari
On 9/29/26 10:35 AM, 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>
> ---
[...]
> +&i2c3 {
> + status = "okay";
> +
> + expander0: pca953x@38 {
> + compatible = "ti,tca9538";
> + reg = <0x38>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + };
Please keep the nodes sorted by their unit address
Konrad
> +
> + expander1: pca953x@3c {
> + compatible = "ti,tca9538";
> + reg = <0x3c>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + };
> +
> + expander2: pca953x@20 {
> + compatible = "ti,tca9539";
> + reg = <0x20>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + };
> +
> + expander3: pca953x@21 {
> + compatible = "ti,tca9539";
> + reg = <0x21>;
> + #gpio-cells = <2>;
> + gpio-controller;
> + };
> +};
> +
> &qupv3_0 {
> firmware-name = "qcom/shikra/qupv3fw.elf";
>
>
> ---
> base-commit: 6375e61c01e93e35ee7acd336a689ac1fae4b509
> change-id: 20260924-shikra-gpio-expander-25ff4a29c848
>
> Best regards,
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH v2] arm64: dts: qcom: shikra-evk: Add GPIO expanders
2026-09-30 9:52 ` Konrad Dybcio
@ 2026-10-01 8:58 ` Komal Bajaj
0 siblings, 0 replies; 3+ messages in thread
From: Komal Bajaj @ 2026-10-01 8:58 UTC (permalink / raw)
To: Konrad Dybcio, Bjorn Andersson, Konrad Dybcio, Abel Vesa,
Rob Herring, Krzysztof Kozlowski, Conor Dooley
Cc: linux-arm-msm, devicetree, linux-kernel, Faruque Ansari
On 9/30/2026 3:22 PM, Konrad Dybcio wrote:
> On 9/29/26 10:35 AM, 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>
>> ---
> [...]
>
>> +&i2c3 {
>> + status = "okay";
>> +
>> + expander0: pca953x@38 {
>> + compatible = "ti,tca9538";
>> + reg = <0x38>;
>> + #gpio-cells = <2>;
>> + gpio-controller;
>> + };
> Please keep the nodes sorted by their unit address
Ack. I will do it next revision.
Thanks
Komal
>
> Konrad
> > +
>> + expander1: pca953x@3c {
>> + compatible = "ti,tca9538";
>> + reg = <0x3c>;
>> + #gpio-cells = <2>;
>> + gpio-controller;
>> + };
>> +
>> + expander2: pca953x@20 {
>> + compatible = "ti,tca9539";
>> + reg = <0x20>;
>> + #gpio-cells = <2>;
>> + gpio-controller;
>> + };
>> +
>> + expander3: pca953x@21 {
>> + compatible = "ti,tca9539";
>> + reg = <0x21>;
>> + #gpio-cells = <2>;
>> + gpio-controller;
>> + };
>> +};
>> +
>> &qupv3_0 {
>> firmware-name = "qcom/shikra/qupv3fw.elf";
>>
>>
>> ---
>> base-commit: 6375e61c01e93e35ee7acd336a689ac1fae4b509
>> change-id: 20260924-shikra-gpio-expander-25ff4a29c848
>>
>> Best regards,
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2026-10-01 8:58 UTC | newest]
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2026-09-29 8:35 [PATCH v2] arm64: dts: qcom: shikra-evk: Add GPIO expanders Komal Bajaj
2026-09-30 9:52 ` Konrad Dybcio
2026-10-01 8:58 ` Komal Bajaj
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