Re: [PATCH v2 1/2] arm64: dts: qcom: qcs6490-rb3gen2-industrial-mezzanine: Add TC9563 PCIe switch node for PCIe0

[Dmitry Baryshkov]

On Tue, Feb 03, 2026 at 10:01:28AM +0530, Sushrut Shree Trivedi wrote:
> Add a node for the TC9563 PCIe switch connected to PCIe0. The switch
> has three downstream ports.Two embedded Ethernet devices are present
> on one of the downstream ports. All the ports present in the
> node represent the downstream ports and embedded endpoints.
> 
> Power to the TC9563 is supplied through two LDO regulators, which
> are on by default and are added as fixed regulators. TC9563 can be
> configured through I2C.
> 
> Signed-off-by: Sushrut Shree Trivedi <sushrut.trivedi@xxxxxxxxxxxxxxxx>
> ---
>  .../qcom/qcs6490-rb3gen2-industrial-mezzanine.dtso | 138 +++++++++++++++++++++
>  1 file changed, 138 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine.dtso b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine.dtso
> index 619a42b5ef48..89bbcab0908d 100644
> --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine.dtso
> +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2-industrial-mezzanine.dtso
> @@ -5,9 +5,47 @@
>  
>  /dts-v1/;
>  /plugin/;
> +#include <dt-bindings/gpio/gpio.h>
>  #include <dt-bindings/clock/qcom,gcc-sc7280.h>
>  #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
>  
> +&{/} {
> +
> +	vreg_dc_12v: regulator-vreg-dc-12v {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_DC_12V";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <24000000>;
> +		regulator-max-microvolt = <24000000>;
> +	};
> +
> +	vreg_1p8: regulator-vreg-1p8 {

1p8 < dc-12v

> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_1P8";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <1800000>;
> +		regulator-max-microvolt = <1800000>;
> +
> +		vin-supply = <&vreg_dc_12v>;
> +	};
> +
> +	vreg_0p9: regulator-vreg-0p9 {
> +		compatible = "regulator-fixed";
> +		regulator-name = "VREG_0P9";
> +
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <900000>;
> +		regulator-max-microvolt = <900000>;
> +
> +		vin-supply = <&vreg_dc_12v>;
> +	};
> +};
> +
>  &spi11 {
>  	#address-cells = <1>;
>  	#size-cells = <0>;

-- 
With best wishes
Dmitry