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Date:   Tue, 5 Jan 2021 12:55:03 -0600
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Varadarajan Narayanan <varada@...eaurora.org>
Cc:     agross@...nel.org, robh+dt@...nel.org, mturquette@...libre.com,
        sboyd@...nel.org, linus.walleij@...aro.org,
        catalin.marinas@....com, will@...nel.org, p.zabel@...gutronix.de,
        nsekar@...eaurora.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, sricharan@...eaurora.org
Subject: Re: [PATCH 6/7] arm64: dts: Add ipq5018 SoC and MP03 board support

On Mon 28 Sep 00:15 CDT 2020, Varadarajan Narayanan wrote:

> Add initial device tree support for the Qualcomm IPQ5018 SoC and
> MP03.1-C2 board.
> 
> Signed-off-by: Varadarajan Narayanan <varada@...eaurora.org>
> ---
>  Documentation/devicetree/bindings/arm/qcom.yaml |   7 +
>  arch/arm64/boot/dts/qcom/Makefile               |   1 +
>  arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts  |  30 ++++
>  arch/arm64/boot/dts/qcom/ipq5018.dtsi           | 201 ++++++++++++++++++++++++
>  4 files changed, 239 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts
>  create mode 100644 arch/arm64/boot/dts/qcom/ipq5018.dtsi
> 
> diff --git a/Documentation/devicetree/bindings/arm/qcom.yaml b/Documentation/devicetree/bindings/arm/qcom.yaml
> index 6031aee..694063f 100644
> --- a/Documentation/devicetree/bindings/arm/qcom.yaml
> +++ b/Documentation/devicetree/bindings/arm/qcom.yaml
> @@ -28,6 +28,7 @@ description: |
>          apq8074
>          apq8084
>          apq8096
> +        ipq5018
>          ipq6018
>          ipq8074
>          mdm9615
> @@ -49,6 +50,7 @@ description: |
>          hk01
>          idp
>          liquid
> +        mp03
>          mtp
>          qrd
>          sbc
> @@ -142,6 +144,11 @@ properties:
>  
>        - items:
>            - enum:
> +              - qcom,ipq5018-mp03
> +          - const: qcom,ipq5018
> +
> +      - items:
> +          - enum:
>                - qcom,ipq8064-ap148
>            - const: qcom,ipq8064
>  
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index d8f1466..3873970 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -4,6 +4,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-db820c.dtb
>  dtb-$(CONFIG_ARCH_QCOM) += apq8096-ifc6640.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq6018-cp01-c1.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk01.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= ipq5018-mp03.1-c2.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-mtp.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-longcheer-l8150.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-samsung-a3u-eur.dtb
> diff --git a/arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts b/arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts
> new file mode 100644
> index 00000000..41bb3b3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts
> @@ -0,0 +1,30 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
> +/*
> + * IPQ5018 CP01 board device tree source
> + *
> + * Copyright (c) 2019, The Linux Foundation. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "ipq5018.dtsi"
> +
> +/ {
> +	model = "Qualcomm Technologies, Inc. IPQ5018/AP-MP03-C2";
> +	compatible = "qcom,ipq5018-mp03", "qcom,ipq5018";
> +
> +	aliases {
> +		serial0 = &blsp1_uart1;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +		bootargs-append = " swiotlb=1";
> +	};
> +};
> +
> +&blsp1_uart1 {
> +	pinctrl-0 = <&serial_1_pins>;
> +	pinctrl-names = "default";
> +	status = "ok";
> +};
> diff --git a/arch/arm64/boot/dts/qcom/ipq5018.dtsi b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> new file mode 100644
> index 00000000..12492a4
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> @@ -0,0 +1,201 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
> +/*
> + * IPQ5018 SoC device tree source
> + *
> + * Copyright (c) 2019, The Linux Foundation. All rights reserved.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/qcom,gcc-ipq5018.h>
> +#include <dt-bindings/reset/qcom,gcc-ipq5018.h>
> +
> +/ {
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +	interrupt-parent = <&intc>;
> +
> +	clocks {
> +		sleep_clk: sleep-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <32000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		xo: xo {
> +			compatible = "fixed-clock";
> +			clock-frequency = <24000000>;
> +			#clock-cells = <0>;
> +		};
> +	};
> +
> +	cpus: cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		CPU0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a53";
> +			reg = <0x0>;
> +			enable-method = "psci";
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		CPU1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a53";
> +			enable-method = "psci";
> +			reg = <0x1>;
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		L2_0: l2-cache {
> +			compatible = "cache";
> +			cache-level = <0x2>;
> +		};
> +	};
> +
> +	pmuv8: pmu {
> +		compatible = "arm,cortex-a53-pmu";
> +		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(4) |
> +					 IRQ_TYPE_LEVEL_HIGH)>;
> +	};
> +
> +	psci: psci {
> +		compatible = "arm,psci-1.0";
> +		method = "smc";
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		tz: tz@...00000 {
> +			reg = <0x0 0x4ac00000 0x0 0x00400000>;
> +			no-map;
> +		};
> +	};
> +
> +	soc: soc {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0 0 0 0xffffffff>;
> +		dma-ranges;

You can't have an empty dma-ranges when the bus and the parent node has
different #address/size-cells.

See 77e9c198b155 ("arm64: dts: qcom: clear the warnings caused by empty dma-ranges")

> +		compatible = "simple-bus";
> +
> +		tlmm: pinctrl@...0000 {
> +			compatible = "qcom,ipq5018-pinctrl";
> +			reg = <0x01000000 0x300000>;
> +			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio-ranges = <&tlmm 0 80>;
> +			interrupt-controller;
> +			#interrupt-cells = <2>;
> +
> +			serial_1_pins: serial1-pinmux {
> +				pins = "gpio31", "gpio32", "gpio33", "gpio34";
> +				function = "blsp1_uart1";
> +				drive-strength = <8>;
> +				bias-pull-down;
> +			};
> +		};
> +
> +		gcc: gcc@...0000 {
> +			compatible = "qcom,gcc-ipq5018";
> +			reg = <0x01800000 0x80000>;
> +			clocks = <&xo>, <&sleep_clk>;
> +			clock-names = "xo", "sleep_clk";
> +			#clock-cells = <1>;
> +			#reset-cells = <1>;
> +		};
> +
> +		blsp1_uart1: serial@...f000 {
> +			compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
> +			reg = <0x078af000 0x200>;
> +			interrupts = <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&gcc GCC_BLSP1_UART1_APPS_CLK>,
> +				<&gcc GCC_BLSP1_AHB_CLK>;
> +			clock-names = "core", "iface";
> +			status = "disabled";
> +		};
> +
> +		intc: interrupt-controller@...0000 {
> +			compatible = "qcom,msm-qgic2";
> +			interrupt-controller;
> +			#interrupt-cells = <0x3>;
> +			reg =   <0x0b000000 0x1000>,  /*GICD*/
> +				<0x0b002000 0x1000>,  /*GICC*/
> +				<0x0b001000 0x1000>,  /*GICH*/
> +				<0x0b004000 0x1000>;  /*GICV*/
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +		};
> +
> +		timer {

This isn't a mmio device, so move it outside /soc

Thanks,
Bjorn

> +			compatible = "arm,armv8-timer";
> +			interrupts = <GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +				     <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +				     <GIC_PPI 4 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
> +				     <GIC_PPI 1 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> +		};
> +
> +		timer@...0000 {
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +			compatible = "arm,armv7-timer-mem";
> +			reg = <0x0b120000 0x1000>;
> +			clock-frequency = <19200000>;
> +
> +			frame@...0000 {
> +				frame-number = <0>;
> +				interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +					     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b121000 0x1000>,
> +				      <0x0b122000 0x1000>;
> +			};
> +
> +			frame@...3000 {
> +				frame-number = <1>;
> +				interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0xb123000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@...4000 {
> +				frame-number = <2>;
> +				interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b124000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@...5000 {
> +				frame-number = <3>;
> +				interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b125000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@...6000 {
> +				frame-number = <4>;
> +				interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b126000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@...7000 {
> +				frame-number = <5>;
> +				interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b127000 0x1000>;
> +				status = "disabled";
> +			};
> +
> +			frame@...8000 {
> +				frame-number = <6>;
> +				interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
> +				reg = <0x0b128000 0x1000>;
> +				status = "disabled";
> +			};
> +		};
> +	};
> +};
> -- 
> 2.7.4
> 

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