Re: [PATCH 3/5] arm: dts: qcom: Add support for MSM8226 SoC

[Bjorn Andersson]

On Fri 26 Mar 09:58 CDT 2021, Bartosz Dudziak wrote:

> This patch adds basic device tree support for MSM8226 SoC which belongs
> to the Snapdragon 400 family. For now, this file adds the basic nodes
> like gcc, pinctrl and other required configuration for booting up to
> the serial console.
> 
> Signed-off-by: Bartosz Dudziak <bartosz.dudziak@xxxxxxxx>
> ---
>  arch/arm/boot/dts/qcom-msm8226.dtsi | 152 ++++++++++++++++++++++++++++
>  1 file changed, 152 insertions(+)
>  create mode 100644 arch/arm/boot/dts/qcom-msm8226.dtsi
> 
> diff --git a/arch/arm/boot/dts/qcom-msm8226.dtsi b/arch/arm/boot/dts/qcom-msm8226.dtsi
> new file mode 100644
> index 0000000000..81bb19398e
> --- /dev/null
> +++ b/arch/arm/boot/dts/qcom-msm8226.dtsi
> @@ -0,0 +1,152 @@
> +// SPDX-License-Identifier: GPL-2.0

Can you please make this BSD license?

> +/*
> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/qcom,gcc-msm8974.h>
> +
> +/ {
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +	model = "Qualcomm Technologies, Inc. MSM8226";
> +	compatible = "qcom,msm8226";

model and compatible should always be specified in the .dts, so the ones
specified here would be overwritten. So drop them here.

> +	interrupt-parent = <&intc>;
> +
> +	chosen { };
> +
> +	memory {
> +		device_type = "memory";
> +		/* We expect the bootloader to fill in the size */
> +		reg = <0x0 0x0>;
> +	};
> +
> +	soc: soc {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +		compatible = "simple-bus";
> +
> +		intc: interrupt-controller@f9000000 {
> +			compatible = "qcom,msm-qgic2";
> +			interrupt-controller;
> +			#interrupt-cells = <3>;
> +			reg = <0xF9000000 0x1000>,
> +			      <0xF9002000 0x1000>;
> +		};
> +
> +		gcc: clock-controller@fc400000 {
> +			compatible = "qcom,gcc-msm8226";
> +			#clock-cells = <1>;
> +			#reset-cells = <1>;
> +			#power-domain-cells = <1>;
> +			reg = <0xfc400000 0x4000>;
> +		};
> +
> +		msmgpio: pinctrl@fd510000 {

Rename the label "tlmm"

> +			compatible = "qcom,msm8226-pinctrl";
> +			reg = <0xfd510000 0x4000>;
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio-ranges = <&msmgpio 0 0 117>;
> +			interrupt-controller;
> +			#interrupt-cells = <2>;
> +			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
> +		};
> +
> +		blsp1_uart3: serial@f991f000 {
> +			compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
> +			reg = <0xf991f000 0x1000>;
> +			interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&gcc GCC_BLSP1_UART3_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>;
> +			clock-names = "core", "iface";
> +			status = "disabled";
> +		};
> +
> +		restart@fc4ab000 {
> +			compatible = "qcom,pshold";
> +			reg = <0xfc4ab000 0x4>;
> +		};
> +
> +		rng@f9bff000 {
> +			compatible = "qcom,prng";
> +			reg = <0xf9bff000 0x200>;
> +			clocks = <&gcc GCC_PRNG_AHB_CLK>;
> +			clock-names = "core";
> +		};
> +
> +		timer@f9020000 {
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +			compatible = "arm,armv7-timer-mem";

It's nice to have compatible & reg first in the nodes.

Regards,
Bjorn

> +			reg = <0xf9020000 0x1000>;
> +			clock-frequency = <19200000>;
> +
> +			frame@f9021000 {
> +				frame-number = <0>;
> +				interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +					     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9021000 0x1000>,
> +				      <0xf9022000 0x1000>;
> +			};
> +
> +			frame@f9023000 {
> +				frame-number = <1>;
> +				interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9023000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@f9024000 {
> +				frame-number = <2>;
> +				interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9024000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@f9025000 {
> +				frame-number = <3>;
> +				interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9025000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@f9026000 {
> +				frame-number = <4>;
> +				interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9026000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@f9027000 {
> +				frame-number = <5>;
> +				interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9027000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@f9028000 {
> +				frame-number = <6>;
> +				interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xf9028000 0x1000>;
> +				status = "disabled";
> +			};
> +		};
> +	};
> +
> +	timer {
> +		compatible = "arm,armv7-timer";
> +		interrupts = <GIC_PPI 2
> +				(GIC_CPU_MASK_RAW(15) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 3
> +				(GIC_CPU_MASK_RAW(15) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 4
> +				(GIC_CPU_MASK_RAW(15) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 1
> +				(GIC_CPU_MASK_RAW(15) | IRQ_TYPE_LEVEL_LOW)>;
> +		clock-frequency = <19200000>;
> +	};
> +};
> -- 
> 2.25.1
>