Thread (29 messages) 29 messages, 4 authors, 2025-09-04

Re: [PATCH v2 03/13] arm64: dts: qcom: lemans-evk: Add TCA9534 I/O expander

From: Konrad Dybcio <hidden>
Date: 2025-09-03 15:49:02
Also in: linux-arm-msm, linux-devicetree, linux-mmc, lkml

On 9/3/25 1:47 PM, Wasim Nazir wrote:
quoted hunk ↗ jump to hunk
From: Nirmesh Kumar Singh <redacted>

Integrate the TCA9534 I/O expander via I2C to provide 8 additional
GPIO lines for extended I/O functionality.

Signed-off-by: Nirmesh Kumar Singh <redacted>
Signed-off-by: Wasim Nazir <redacted>
---
 arch/arm64/boot/dts/qcom/lemans-evk.dts | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/lemans-evk.dts b/arch/arm64/boot/dts/qcom/lemans-evk.dts
index 9e415012140b..753c5afc3342 100644
--- a/arch/arm64/boot/dts/qcom/lemans-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-evk.dts
@@ -277,6 +277,38 @@ vreg_l8e: ldo8 {
 	};
 };
 
+&i2c18 {
+	status = "okay";
+
+	expander0: gpio@38 {
+		compatible = "ti,tca9538";
+		#gpio-cells = <2>;
+		gpio-controller;
+		reg = <0x38>;
'reg' usually comes right after compatible

Konrad
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