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Message-ID: <f6ef1834-b629-b76c-9cde-55af56320665@linaro.org>
Date:   Wed, 11 Jan 2023 10:44:03 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     devi priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
        sboyd@...nel.org, linus.walleij@...aro.org,
        catalin.marinas@....com, will@...nel.org, p.zabel@...gutronix.de,
        shawnguo@...nel.org, arnd@...db.de, marcel.ziswiler@...adex.com,
        dmitry.baryshkov@...aro.org, nfraprado@...labora.com,
        broonie@...nel.org, tdas@...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
Cc:     quic_srichara@...cinc.com, quic_gokulsri@...cinc.com,
        quic_sjaganat@...cinc.com, quic_kathirav@...cinc.com,
        quic_arajkuma@...cinc.com, quic_anusha@...cinc.com,
        quic_poovendh@...cinc.com
Subject: Re: [PATCH 6/7] arm64: dts: Add ipq9574 SoC and AL02 board support

On 10/01/2023 13:13, devi priya wrote:
> From: POOVENDHAN SELVARAJ <quic_poovendh@...cinc.com>
> 
> Add initial device tree support for Qualcomm IPQ9574 SoC
> and AL02 board
> 
> Co-developed-by: Anusha Rao <quic_anusha@...cinc.com>
> Signed-off-by: Anusha Rao <quic_anusha@...cinc.com>
> Co-developed-by: devi priya <quic_devipriy@...cinc.com>
> Signed-off-by: devi priya <quic_devipriy@...cinc.com>
> Signed-off-by: POOVENDHAN SELVARAJ <quic_poovendh@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/Makefile            |   1 +
>  arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dts |  69 ++++
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi        | 318 +++++++++++++++++++
>  3 files changed, 388 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dts
>  create mode 100644 arch/arm64/boot/dts/qcom/ipq9574.dtsi
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 3e79496292e7..872c62028a0b 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= ipq6018-cp01-c1.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk01.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c1.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c2.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= ipq9574-al02-c7.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-alcatel-idol347.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-asus-z00l.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-huawei-g7.dtb
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dts b/arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dts
> new file mode 100644
> index 000000000000..ae3c32f3e16a
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dts
> @@ -0,0 +1,69 @@
> +// SPDX-License-Identifier: GPL-2.0-only

Not dual licensed? Not BSD?

> +/*
> + * IPQ9574 AL02-C7 board device tree source
> + *
> + * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "ipq9574.dtsi"
> +
> +/ {
> +	model = "Qualcomm Technologies, Inc. IPQ9574/AP-AL02-C7";
> +	compatible = "qcom,ipq9574-ap-al02-c7", "qcom,ipq9574";
> +	interrupt-parent = <&intc>;
> +
> +	aliases {
> +		serial0 = &blsp1_uart2;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&blsp1_uart2 {
> +	pinctrl-0 = <&uart2_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&sdhc_1 {
> +	pinctrl-0 = <&emmc_pins>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&tlmm {
> +	emmc_pins: emmc-state {
> +		emmc-clk-pins {
> +			pins = "gpio5";
> +			function = "sdc_clk";
> +			drive-strength = <8>;
> +			bias-disable;
> +		};
> +		emmc-cmd-pins {
> +			pins = "gpio4";
> +			function = "sdc_cmd";
> +			drive-strength = <8>;
> +			bias-pull-up;
> +		};
> +		emmc-data-pins {
> +			pins = "gpio0", "gpio1", "gpio2",
> +			     "gpio3", "gpio6", "gpio7",
> +			     "gpio8", "gpio9";
> +			function = "sdc_data";
> +			drive-strength = <8>;
> +			bias-pull-up;
> +		};
> +		emmc-rclk-pins {
> +			pins = "gpio10";
> +			function = "sdc_rclk";
> +			drive-strength = <8>;
> +			bias-pull-down;
> +		};
> +	};
> +
> +};
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> new file mode 100644
> index 000000000000..188d18688a77
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> @@ -0,0 +1,318 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * IPQ9574 SoC device tree source
> + *
> + * Copyright (c) 2020-2021 The Linux Foundation. All rights reserved.
> + * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
> + */
> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/qcom,gcc-ipq9574.h>
> +#include <dt-bindings/reset/qcom,gcc-ipq9574.h>
> +
> +/ {
> +	interrupt-parent = <&intc>;
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	clocks {
> +		bias_pll_ubi_nc_clk: bias_pll_ubi_nc_clk {

No undercores in node names.

> +			compatible = "fixed-clock";
> +			clock-frequency = <353000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		pcie30_phy0_pipe_clk: pcie30_phy0_pipe_clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <250000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		pcie30_phy1_pipe_clk: pcie30_phy1_pipe_clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <250000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		pcie30_phy2_pipe_clk: pcie30_phy2_pipe_clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <250000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		pcie30_phy3_pipe_clk: pcie30_phy3_pipe_clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <250000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		usb3phy_0_cc_pipe_clk: usb3phy_0_cc_pipe_clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <125000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		sleep_clk: sleep-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <32000>;

That's not a property of the SoC, but board. Either entire clock or at
least frequency to indicate that the board is providing the clock.

> +			#clock-cells = <0>;> +		};
> +
> +		xo_board_clk: xo-board-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <24000000>;

Ditto.

> +			#clock-cells = <0>;
> +		};
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		CPU0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a73";
> +			reg = <0x0>;
> +			enable-method = "psci";
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		CPU1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a73";
> +			reg = <0x1>;
> +			enable-method = "psci";
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		CPU2: cpu@2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a73";
> +			reg = <0x2>;
> +			enable-method = "psci";
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		CPU3: cpu@3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a73";
> +			reg = <0x3>;
> +			enable-method = "psci";
> +			next-level-cache = <&L2_0>;
> +		};
> +
> +		L2_0: l2-cache {
> +			compatible = "cache";
> +			cache-level = <2>;
> +		};
> +	};
> +
> +	memory@...00000 {
> +		device_type = "memory";
> +		/* We expect the bootloader to fill in the size */
> +		reg = <0x0 0x40000000 0x0 0x0>;
> +	};
> +
> +	pmu {
> +		compatible = "arm,cortex-a73-pmu";
> +		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
> +	};
> +
> +	psci {
> +		compatible = "arm,psci-1.0";
> +		method = "smc";
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		tz_region: memory@...00000 {
> +			reg = <0x0 0x4a600000 0x0 0x400000>;
> +			no-map;
> +		};
> +	};
> +
> +	soc: soc@0 {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges = <0 0 0 0xffffffff>;
> +		compatible = "simple-bus";
> +
> +		tlmm: pinctrl@...0000 {
> +			compatible = "qcom,ipq9574-tlmm";
> +			reg = <0x01000000 0x300000>;
> +			interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio-ranges = <&tlmm 0 0 65>;
> +			gpio-reserved-ranges = <59 1>;

Hm, why reserved ranges are in SoC?

> +			interrupt-controller;
> +			#interrupt-cells = <2>;
> +
> +			uart2_pins: uart2-state {
> +				pins = "gpio34", "gpio35";
> +				function = "blsp2_uart";
> +				drive-strength = <8>;
> +				bias-disable;
> +			};
> +		};
> +
> +		gcc: clock-controller@...0000 {
> +			compatible = "qcom,gcc-ipq9574";
> +			reg = <0x1800000 0x80000>;
> +			clocks = <&xo_board_clk>,
> +				<&sleep_clk>,
> +				<&bias_pll_ubi_nc_clk>,
> +				<&pcie30_phy0_pipe_clk>,
> +				<&pcie30_phy1_pipe_clk>,
> +				<&pcie30_phy2_pipe_clk>,
> +				<&pcie30_phy3_pipe_clk>,
> +				<&usb3phy_0_cc_pipe_clk>;
> +			clock-names = "xo",
> +				"sleep_clk",

Misaligned. Multiple other places probably as well.

> +				"bias_pll_ubi_nc_clk",
> +				"pcie30_phy0_pipe_clk",
> +				"pcie30_phy1_pipe_clk",
> +				"pcie30_phy2_pipe_clk",
> +				"pcie30_phy3_pipe_clk",
> +				"usb3phy_0_cc_pipe_clk";
> +			#clock-cells = <1>;
> +			#reset-cells = <1>;
> +		};
> +
> +		sdhc_1: sdhci@...4000 {
> +			compatible = "qcom,sdhci-msm-v5";
> +			reg = <0x7804000 0x1000>, <0x7805000 0x1000>;
> +			reg-names = "hc_mem", "cmdq_mem";
> +
> +			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
> +				   <GIC_SPI 138 IRQ_TYPE_LEVEL_HIGH>;

Like here.

> +			interrupt-names = "hc_irq", "pwr_irq";
> +
> +			clocks = <&xo_board_clk>,
> +			       <&gcc GCC_SDCC1_AHB_CLK>,
> +			       <&gcc GCC_SDCC1_APPS_CLK>;

And here

> +			clock-names = "xo", "iface", "core";

Does not look like you tested the bindings. Please run `make
dt_binding_check` (see
Documentation/devicetree/bindings/writing-schema.rst for instructions).

> +			mmc-ddr-1_8v;
> +			mmc-hs200-1_8v;
> +			mmc-hs400-1_8v;
> +			mmc-hs400-enhanced-strobe;
> +			max-frequency = <384000000>;
> +			bus-width = <8>;
> +			non-removable;
> +			status = "disabled";
> +		};
> +
> +		blsp1_uart2: serial@...1000 {
> +			compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
> +			reg = <0x078b1000 0x200>;
> +			interrupts = <GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&gcc GCC_BLSP1_UART3_APPS_CLK>,
> +				 <&gcc GCC_BLSP1_AHB_CLK>;
> +			clock-names = "core", "iface";
> +			status = "disabled";
> +		};
> +
> +		intc: interrupt-controller@...0000 {
> +			compatible = "qcom,msm-qgic2";
> +			reg = <0x0b000000 0x1000>,  /* GICD */
> +			      <0x0b002000 0x1000>,  /* GICC */
> +			      <0x0b001000 0x1000>,  /* GICH */
> +			      <0x0b004000 0x1000>;  /* GICV */
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			interrupt-controller;
> +			#interrupt-cells = <3>;
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +			ranges = <0 0x0b00c000 0x3000>;
> +
> +			v2m0: v2m@0 {
> +				compatible = "arm,gic-v2m-frame";
> +				reg = <0x0 0xffd>;
> +				msi-controller;
> +			};
> +
> +			v2m1: v2m@1 {
> +				compatible = "arm,gic-v2m-frame";
> +				reg = <0x1000 0xffd>;
> +				msi-controller;
> +			};
> +
> +			v2m2: v2m@2 {
> +				compatible = "arm,gic-v2m-frame";
> +				reg = <0x2000 0xffd>;
> +				msi-controller;
> +			};
> +		};
> +
> +		timer@...0000 {
> +			compatible = "arm,armv7-timer-mem";
> +			reg = <0xb120000 0x1000>;
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +			clock-frequency = <24000000>;
> +
> +			frame@...0000 {
> +				reg = <0xb121000 0x1000>,
> +				      <0xb122000 0x1000>;
> +				frame-number = <0>;
> +				interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +					     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
> +			};
> +
> +			frame@...3000 {
> +				reg = <0xb123000 0x1000>;
> +				frame-number = <1>;
> +				interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +
> +			frame@...4000 {
> +				reg = <0xb124000 0x1000>;
> +				frame-number = <2>;
> +				interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +
> +			frame@...5000 {
> +				reg = <0xb125000 0x1000>;
> +				frame-number = <3>;
> +				interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +
> +			frame@...6000 {
> +				reg = <0xb126000 0x1000>;
> +				frame-number = <4>;
> +				interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +
> +			frame@...7000 {
> +				reg = <0xb127000 0x1000>;
> +				frame-number = <5>;
> +				interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +
> +			frame@...8000 {
> +				reg = <0xb128000 0x1000>;
> +				frame-number = <6>;
> +				interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
> +				status = "disabled";
> +			};
> +		};
> +	};
> +
> +	timer {
> +		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)>;
> +		clock-frequency = <24000000>;

Is this allowed in recent designs?

> +	};
> +};

Best regards,
Krzysztof

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