[v2] arm64: dts: qcom: lemans-evk: Extend board support for additional peripherals

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

Posted by Wasim Nazir 4 weeks, 1 day ago

From: Nirmesh Kumar Singh <quic_nkumarsi@quicinc.com>

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 <quic_nkumarsi@quicinc.com>
Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
---
 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>;
+	};
+
+	expander1: gpio@39 {
+		compatible = "ti,tca9538";
+		#gpio-cells = <2>;
+		gpio-controller;
+		reg = <0x39>;
+	};
+
+	expander2: gpio@3a {
+		compatible = "ti,tca9538";
+		#gpio-cells = <2>;
+		gpio-controller;
+		reg = <0x3a>;
+	};
+
+	expander3: gpio@3b {
+		compatible = "ti,tca9538";
+		#gpio-cells = <2>;
+		gpio-controller;
+		reg = <0x3b>;
+	};
+};
+
 &mdss0 {
 	status = "okay";
 };

-- 
2.51.0

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

Posted by Konrad Dybcio 4 weeks, 1 day ago

On 9/3/25 1:47 PM, Wasim Nazir wrote:
> From: Nirmesh Kumar Singh <quic_nkumarsi@quicinc.com>
> 
> 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 <quic_nkumarsi@quicinc.com>
> Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
> ---
>  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

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

Posted by Wasim Nazir 4 weeks, 1 day ago

On Wed, Sep 03, 2025 at 05:48:56PM +0200, Konrad Dybcio wrote:
> On 9/3/25 1:47 PM, Wasim Nazir wrote:
> > From: Nirmesh Kumar Singh <quic_nkumarsi@quicinc.com>
> > 
> > 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 <quic_nkumarsi@quicinc.com>
> > Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com>
> > ---
> >  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
> 

Ack.

> Konrad

-- 
Regards,
Wasim