Re: [PATCH v2 08/10] arm64: dts: qcom: Add QUPv3 UART console node for SDX75

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 5.06.2023 18:29, Rohit Agarwal wrote:
> Add the debug uart console node in devicetree.
> 
> Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sdx75.dtsi | 49 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 49 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdx75.dtsi b/arch/arm64/boot/dts/qcom/sdx75.dtsi
> index f83eef8..47170ae 100644
> --- a/arch/arm64/boot/dts/qcom/sdx75.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdx75.dtsi
> @@ -385,6 +385,34 @@
>  			#power-domain-cells = <1>;
>  		};
>  
> +		qupv3_id_0: geniqup@9c0000 {
> +			compatible = "qcom,geni-se-qup";
> +			reg = <0x0 0x009c0000 0x0 0x2000>;
> +			clocks = <&gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>,
> +				 <&gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>;
> +			clock-names = "m-ahb",
> +				      "s-ahb";
> +			iommus = <&apps_smmu 0xe3 0x0>;
> +			#address-cells = <2>;
> +			#size-cells = <2>;
> +			ranges;
> +			status = "disabled";
> +
> +			uart1: serial@984000 {
> +				compatible = "qcom,geni-debug-uart";
> +				reg = <0x0 0x00984000 0x0 0x4000>;
> +				clock-names = "se";
> +				clocks = <&gcc GCC_QUPV3_WRAP0_S1_CLK>;
> +				interrupts = <GIC_SPI 338 IRQ_TYPE_LEVEL_HIGH>;
> +				pinctrl-0 = <&qupv3_se1_2uart_tx_active>,
> +					    <&qupv3_se1_2uart_rx_active>;
> +				pinctrl-1 = <&qupv3_se1_2uart_sleep>;
> +				pinctrl-names = "default",
> +						"sleep";
> +				status = "disabled";
> +			};
> +		};
> +
>  		tcsr_mutex: hwlock@1f40000 {
>  			compatible = "qcom,tcsr-mutex";
>  			reg = <0x0 0x01f40000 0x0 0x40000>;
> @@ -413,6 +441,27 @@
>  			interrupt-controller;
>  			#interrupt-cells = <2>;
>  			wakeup-parent = <&pdc>;
> +
> +			qupv3_se1_2uart_tx_active: qupv3-se1-2uart-tx-active-state {
> +				pins = "gpio12";
> +				function = "qup_se1_l2_mira";
> +				drive-strength= <2>;
> +				bias-disable;
> +			};
You can bunch these two up like this:

qupv3_se1_2uart_active: qup.... {
	tx {
		pins = ...
		foo = ...
	};

	rx {
		pins = ...
		bar = ...
	};
};

Konrad
> +
> +			qupv3_se1_2uart_rx_active: qupv3-se1-2uart-rx-active-state {
> +				pins = "gpio13";
> +				function = "qup_se1_l3_mira";
> +				drive-strength= <2>;
> +				bias-disable;
> +			};
> +
> +			qupv3_se1_2uart_sleep: qupv3-se1-2uart-sleep-state {
> +				pins = "gpio12", "gpio13";
> +				function = "gpio";
> +				drive-strength = <2>;
> +				bias-pull-down;
> +			};
>  		};
>  
>  		apps_smmu: iommu@15000000 {