Message-ID: <8b9ed619-8ff1-53f1-1f3a-c10a3585b9c4@quicinc.com>
Date:   Thu, 26 Jan 2023 22:20:23 +0530
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Subject: Re: [PATCH 09/10] arm64: dts: qcom: add IPQ5332 SoC and MI01.2 board
 support
Content-Language: en-US
To:     Konrad Dybcio <konrad.dybcio@linaro.org>, <agross@kernel.org>,
        <andersson@kernel.org>, <robh+dt@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <mturquette@baylibre.com>,
        <sboyd@kernel.org>, <ulf.hansson@linaro.org>,
        <linus.walleij@linaro.org>, <catalin.marinas@arm.com>,
        <will@kernel.org>, <shawnguo@kernel.org>, <arnd@arndb.de>,
        <marcel.ziswiler@toradex.com>, <dmitry.baryshkov@linaro.org>,
        <nfraprado@collabora.com>, <broonie@kernel.org>,
        <robimarko@gmail.com>, <quic_gurus@quicinc.com>,
        <bhupesh.sharma@linaro.org>, <linux-arm-msm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-clk@vger.kernel.org>, <linux-mmc@vger.kernel.org>,
        <linux-gpio@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>
References: <20230125104520.89684-1-quic_kathirav@quicinc.com>
 <20230125104520.89684-10-quic_kathirav@quicinc.com>
 <f0312e77-0835-7f79-acf0-3d91d6548f07@linaro.org>
From:   Kathiravan Thirumoorthy <quic_kathirav@quicinc.com>
In-Reply-To: <f0312e77-0835-7f79-acf0-3d91d6548f07@linaro.org>
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Precedence: bulk

Thanks Konrad for taking time to review the patch.


On 1/26/2023 3:29 AM, Konrad Dybcio wrote:
>
> On 25.01.2023 11:45, Kathiravan Thirumoorthy wrote:
>> From: Kathiravan T <quic_kathirav@quicinc.com>
>>
>> Add initial device tree support for the Qualcomm IPQ5332 SoC and
>> MI01.2 board.
>>
>> Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/Makefile           |   1 +
>>   arch/arm64/boot/dts/qcom/ipq5332-mi01.2.dts |  71 +++++
>>   arch/arm64/boot/dts/qcom/ipq5332.dtsi       | 273 ++++++++++++++++++++
>>   3 files changed, 345 insertions(+)
>>   create mode 100644 arch/arm64/boot/dts/qcom/ipq5332-mi01.2.dts
>>   create mode 100644 arch/arm64/boot/dts/qcom/ipq5332.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>> index 3e79496292e7..fbd5bc583a9b 100644
>> --- a/arch/arm64/boot/dts/qcom/Makefile
>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>> @@ -3,6 +3,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= apq8016-sbc.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= apq8094-sony-xperia-kitakami-karin_windy.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-db820c.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= apq8096-ifc6640.dtb
>> +dtb-$(CONFIG_ARCH_QCOM)	+= ipq5332-mi01.2.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= ipq6018-cp01-c1.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk01.dtb
>>   dtb-$(CONFIG_ARCH_QCOM)	+= ipq8074-hk10-c1.dtb
>> diff --git a/arch/arm64/boot/dts/qcom/ipq5332-mi01.2.dts b/arch/arm64/boot/dts/qcom/ipq5332-mi01.2.dts
>> new file mode 100644
>> index 000000000000..7984d8f824ce
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/ipq5332-mi01.2.dts
>> @@ -0,0 +1,71 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
>> +/*
>> + * IPQ5332 AP-MI01.2 board device tree source
>> + *
>> + * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "ipq5332.dtsi"
>> +
>> +/ {
>> +	model = "Qualcomm Technologies, Inc. IPQ5332/AP-MI01.2";
>> +	compatible = "qcom,ipq5332-ap-mi01.2", "qcom,ipq5332";
>> +
>> +	aliases {
>> +		serial0 = &blsp1_uart0;
>> +	};
>> +
>> +	chosen {
>> +		stdout-path = "serial0";
>> +	};
>> +};
>> +
>> +&blsp1_uart0 {
>> +	pinctrl-0 = <&serial_0_pins>;
>> +	pinctrl-names = "default";
>> +	status = "okay";
>> +};
>> +
>> +&sdhc {
>> +	pinctrl-0 = <&sdc_default_state>;
>> +	pinctrl-names = "default";
>> +	non-removable;
>> +	status = "okay";
>> +};
>> +
>> +&sleep_clk {
>> +	clock-frequency = <32000>;
>> +};
>> +
>> +&xo_board {
>> +	clock-frequency = <24000000>;
>> +};
>> +
>> +/* PINCTRL */
>> +
>> +&tlmm {
>> +	sdc_default_state: sdc-default-state {
>> +		clk-pins {
>> +			pins = "gpio13";
>> +			function = "sdc_clk";
>> +			drive-strength = <8>;
>> +			bias-disable;
>> +		};
>> +
>> +		cmd-pins {
>> +			pins = "gpio12";
>> +			function = "sdc_cmd";
>> +			drive-strength = <8>;
>> +			bias-pull-up;
>> +		};
>> +
>> +		data-pins {
>> +			pins = "gpio8", "gpio9", "gpio10", "gpio11";
>> +			function = "sdc_data";
>> +			drive-strength = <8>;
>> +			bias-pull-up;
>> +		};
>> +	};
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
>> new file mode 100644
>> index 000000000000..d04244a3cd3a
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
>> @@ -0,0 +1,273 @@
>> +// SPDX-License-Identifier: BSD-3-Clause
>> +/*
>> + * IPQ5332 device tree source
>> + *
>> + * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved.
>> + */
>> +
>> +#include <dt-bindings/clock/qcom,gcc-ipq5332.h>
>> +#include <dt-bindings/interrupt-controller/arm-gic.h>
>> +
>> +/ {
>> +	interrupt-parent = <&intc>;
>> +	#address-cells = <2>;
>> +	#size-cells = <2>;
>> +
>> +	clocks {
>> +		sleep_clk: sleep-clk {
>> +			compatible = "fixed-clock";
>> +			#clock-cells = <0>;
>> +		};
>> +
>> +		xo_board: xo-board-clk {
>> +			compatible = "fixed-clock";
>> +			#clock-cells = <0>;
>> +		};
>> +	};
>> +
>> +	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";
>> +			reg = <0x1>;
>> +			enable-method = "psci";
>> +			next-level-cache = <&L2_0>;
>> +		};
>> +
>> +		CPU2: cpu@2 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a53";
>> +			reg = <0x2>;
>> +			enable-method = "psci";
>> +			next-level-cache = <&L2_0>;
>> +		};
>> +
>> +		CPU3: cpu@3 {
>> +			device_type = "cpu";
>> +			compatible = "arm,cortex-a53";
>> +			reg = <0x3>;
>> +			enable-method = "psci";
>> +			next-level-cache = <&L2_0>;
>> +		};
>> +
>> +		L2_0: l2-cache {
>> +			compatible = "cache";
>> +			cache-level = <0x2>;
>> +		};
>> +	};
>> +
>> +	firmware {
>> +		scm {
>> +			compatible = "qcom,scm-ipq5332", "qcom,scm";
>> +		};
>> +	};
>> +
>> +	memory@40000000 {
>> +		device_type = "memory";
>> +		/* We expect the bootloader to fill in the size */
>> +		reg = <0x0 0x40000000 0x0 0x0>;
>> +	};
>> +
>> +	pmu {
>> +		compatible = "arm,cortex-a53-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: memory@4a600000 {
> memory@ is discouraged, the node name should be somewhat
> descriptive of what lies in this reserved region. On the
> other hand, tz: sounds like a label to a trust zone device
> of some kind. I propose:
>
> tz_mem: tz@4a600000 {
>
> instead.


Ack.


>
>> +			no-map;
>> +			reg = <0x0 0x4a600000 0x0 0x200000>;
>> +		};
>> +	};
>> +
>> +	soc@0 {
>> +		#address-cells = <1>;
>> +		#size-cells = <1>;
>> +		ranges = <0 0 0 0xffffffff>;
>> +		compatible = "simple-bus";
> Move compatible first, please.


Ack.


>
>> +
>> +		tlmm: pinctrl@1000000 {
>> +			compatible = "qcom,ipq5332-tlmm";
>> +			reg = <0x01000000 0x300000>;
>> +			interrupts = <GIC_SPI 249 IRQ_TYPE_LEVEL_HIGH>;
>> +			gpio-controller;
>> +			#gpio-cells = <2>;
>> +			gpio-ranges = <&tlmm 0 0 53>;
>> +			interrupt-controller;
>> +			#interrupt-cells = <2>;
>> +
>> +			serial_0_pins: serial0-state {
> You may be interested in having a suspend state for this
> one, so you may wish to rename this futureproofing-ly to
> serial0-active-state.


Ack. AFAIK, we don't support suspend state, anyways let me got back and 
check it.


>
>> +				pins = "gpio18", "gpio19";
>> +				function = "blsp0_uart0";
>> +				drive-strength = <8>;
>> +				bias-pull-up;
>> +			};
>> +		};
>> +
>> +		gcc: clock-controller@1800000 {
>> +			compatible = "qcom,ipq5332-gcc";
>> +			reg = <0x01800000 0x80000>;
>> +			#clock-cells = <0x1>;
>> +			#reset-cells = <0x1>;
> Decimal values for -cells, please.


Ack.


>
>> +			#power-domain-cells = <1>;
>> +			clock-names = "xo",
>> +				      "sleep_clk",
>> +				      "pcie_2lane_phy_pipe_clk",
>> +				      "pcie_2lane_phy_pipe_clk_x1",
>> +				      "usb_pcie_wrapper_pipe_clk";
>> +			clocks = <&xo_board>,
>> +				 <&sleep_clk>,
>> +				 <0>,
>> +				 <0>,
>> +				 <0>;
>> +		};
>> +
>> +		sdhc: mmc@7804000 {
>> +			compatible = "qcom,ipq5332-sdhci", "qcom,sdhci-msm-v5";
>> +			reg = <0x07804000 0x1000>, <0x07805000 0x1000>;
>> +
>> +			interrupts = <GIC_SPI 313 IRQ_TYPE_LEVEL_HIGH>,
>> +				     <GIC_SPI 316 IRQ_TYPE_LEVEL_HIGH>;
>> +			interrupt-names = "hc_irq", "pwr_irq";
>> +
>> +			clocks = <&gcc GCC_SDCC1_AHB_CLK>,
>> +				 <&gcc GCC_SDCC1_APPS_CLK>,
>> +				 <&xo_board>;
>> +			clock-names = "iface", "core", "xo";
>> +			mmc-ddr-1_8v;
>> +			mmc-hs200-1_8v;
>> +			max-frequency = <192000000>;
> As Krzysztof pointed out, this one should go.


Ack.


>
>> +			bus-width = <4>;
> Oh that's interesting.. a 4-wide bus for eMMC?


Yes, eMMC is 4bit bus width with HS200 mode only.


>
>> +			status = "disabled";
>> +		};
>> +
>> +		blsp1_uart0: serial@78af000 {
>> +			compatible = "qcom,msm-uartdm-v1.4", "qcom,msm-uartdm";
>> +			reg = <0x078af000 0x200>;
>> +			interrupts = <GIC_SPI 290 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@b000000 {
>> +			compatible = "qcom,msm-qgic2";
>> +			#address-cells = <1>;
>> +			#size-cells = <1>;
> Please move these two above ranges..


Ack.


>
>> +			interrupt-controller;
>> +			#interrupt-cells = <0x3>;
> Decimal value, please.


Ack.


>
>> +			reg = <0x0b000000 0x1000>,	/* GICD */
>> +			      <0x0b002000 0x1000>,	/* GICC */
>> +			      <0x0b001000 0x1000>,	/* GICH */
>> +			      <0x0b004000 0x1000>;	/* GICV */
> ..and reg just below compatible...

Ack.


>
>> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> ..and interrupts just below reg, please.

Ack.


>
>> +			ranges = <0 0x0b00c000 0x3000>;
>> +
>> +			v2m0: v2m@0 {
>> +				compatible = "arm,gic-v2m-frame";
>> +				reg = <0x0 0xffd>;
> Please pad the reg for consistency.


Sure.


>> +				msi-controller;
>> +			};
>> +
>> +			v2m1: v2m@1 {
>> +				compatible = "arm,gic-v2m-frame";
>> +				reg = <0x00001000 0xffd>;
>> +				msi-controller;
>> +			};
>> +
>> +			v2m2: v2m@2 {
>> +				compatible = "arm,gic-v2m-frame";
>> +				reg = <0x00002000 0xffd>;
>> +				msi-controller;
>> +			};
>> +		};
>> +
>> +		timer@b120000 {
>> +			compatible = "arm,armv7-timer-mem";
>> +			reg = <0x0b120000 0x1000>;
>> +			#address-cells = <1>;
>> +			#size-cells = <1>;
>> +			ranges;
>> +
>> +			frame@b120000 {
>> +				frame-number = <0>;
>> +				interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
>> +					     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b121000 0x1000>,
>> +				      <0x0b122000 0x1000>;
> reg
> interrupts
> frame-number
>
> would be more consistent with most other nodes.
Ack.
>
>> +			};
>> +
>> +			frame@b123000 {
>> +				frame-number = <1>;
>> +				interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b123000 0x1000>;
>> +				status = "disabled";
>> +			};
>> +
>> +			frame@b124000 {
>> +				frame-number = <2>;
>> +				interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b124000 0x1000>;
>> +				status = "disabled";
>> +			};
>> +
>> +			frame@b125000 {
>> +				frame-number = <3>;
>> +				interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b125000 0x1000>;
>> +				status = "disabled";
>> +			};
>> +
>> +			frame@b126000 {
>> +				frame-number = <4>;
>> +				interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b126000 0x1000>;
>> +				status = "disabled";
>> +			};
>> +
>> +			frame@b127000 {
>> +				frame-number = <5>;
>> +				interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b127000 0x1000>;
>> +				status = "disabled";
>> +			};
>> +
>> +			frame@b128000 {
>> +				frame-number = <6>;
>> +				interrupts = <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>;
>> +				reg = <0x0b128000 0x1000>;
>> +				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)>;
> The indentation seems off here.


Will fix it in V2. Thanks.


>
> Konrad
>> +	};
>> +};