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Message-ID: <f8aa5f81-e77c-db28-519d-7d9ee119dcf3@somainline.org>
Date: Sun, 26 Jun 2022 20:32:47 +0200
From: Konrad Dybcio <konrad.dybcio@...ainline.org>
To: Sricharan R <quic_srichara@...cinc.com>, agross@...nel.org,
bjorn.andersson@...aro.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, mturquette@...libre.com,
sboyd@...nel.org, linus.walleij@...aro.org,
catalin.marinas@....com, p.zabel@...gutronix.de,
quic_varada@...cinc.com, 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
Subject: Re: [PATCH V2 7/8] arm64: dts: Add ipq5018 SoC and MP03 board support
On 21.06.2022 18:11, Sricharan R wrote:
> From: Varadarajan Narayanan <quic_varada@...cinc.com>
>
> Add initial device tree support for the Qualcomm IPQ5018 SoC and
> MP03.1-C2 board.
>
> Co-developed-by: Sricharan R <quic_srichara@...cinc.com>
> Signed-off-by: Sricharan R <quic_srichara@...cinc.com>
> Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> ---
> arch/arm64/boot/dts/qcom/Makefile | 1 +
> .../arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts | 29 +++
> arch/arm64/boot/dts/qcom/ipq5018.dtsi | 221 ++++++++++++++++++
> 3 files changed, 251 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/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index f9e6343acd03..c44e701f093c 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -10,6 +10,7 @@ dtb-$(CONFIG_ARCH_QCOM) += ipq8074-hk10-c2.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-alcatel-idol347.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-asus-z00l.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-huawei-g7.dtb
> +dtb-$(CONFIG_ARCH_QCOM) += ipq5018-mp03.1-c2.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-longcheer-l8150.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-longcheer-l8910.dtb
> dtb-$(CONFIG_ARCH_QCOM) += msm8916-mtp.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 000000000000..d1cd080ec3db
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq5018-mp03.1-c2.dts
> @@ -0,0 +1,29 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
> +/*
> + * IPQ5018 CP01 board device tree source
> + *
> + * Copyright (c) 2020-2021, 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";
> + };
> +};
> +
> +&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 000000000000..084fb7b30dfd
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq5018.dtsi
> @@ -0,0 +1,221 @@
> +// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
> +/*
> + * Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
> + */
> +/*
> + * 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>;
Hi!
interrupt-parent could go first.
> +
> + sleep_clk: sleep-clk {
> + compatible = "fixed-clock";
> + clock-frequency = <32000>;
> + #clock-cells = <0>;
> + };
> +
> + xo: xo {
> + compatible = "fixed-clock";
> + clock-frequency = <24000000>;
> + #clock-cells = <0>;
> + };
> +
> + gen2clk0: gen2clk0 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <125000000>;
> + clock-output-names = "pcie20_phy0_pipe_clk";
> + };
> +
> + gen2clk1: gen2clk1 {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <125000000>;
> + clock-output-names = "pcie20_phy1_pipe_clk";
> + };
I am not sure what's the current stance on this, but previously clock nodes
used to be wrapped in a clocks {} node, as currently they are not sorted
properly.
> +
> + cpus: cpus {
Is this label going to be used?
> + #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>;
This should probably be dec, as it's not a register.
> + };
> + };
> +
> + pmuv8: pmu {
Are there any other PMUs? And is this label going to be used?
> + compatible = "arm,cortex-a53-pmu";
> + interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(4) |
> + IRQ_TYPE_LEVEL_HIGH)>;
I think this can fit in a single 100-char line.
> + };
> +
> + psci: psci {
> + compatible = "arm,psci-1.0";
> + method = "smc";
> + };
> +
> + memory@...00000 {
This node is not sorted properly.
> + device_type = "memory";
> + /* We expect the bootloader to fill in the size */
> + reg = <0x0 0x40000000 0x0 0x0>;
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + tz: tz@...00000 {
Please rename it to tz_memory or tz_region or something more
descriptive. Also, memory@
> + reg = <0x0 0x4ac00000 0x0 0x00400000>;
I don't think we tend to pad size to 8 hex digits.
> + no-map;
> + };
> + };
> +
> + timer {
This is not sorted properly.
> + 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)>;
> + };
> +
> + soc: soc@0 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges = <0 0 0 0xffffffff>;
Isn't that the default value?
> + compatible = "simple-bus";
Please sort the properties.
> +
> + 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 {
Other DTs call it uart pins, also this is the default/poweron
state but the hardware provides support for sleep/poweroff.
Please rename this accordingly.
> + pins = "gpio31", "gpio32", "gpio33", "gpio34";
> + function = "blsp1_uart1";
> + drive-strength = <8>;
> + bias-pull-down;
> + };
> + };
> +
> + gcc: clock-controller@...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>;
Not sure whether thunderbird is dumb again, or the indentation
is off by 1 space.
> + clock-names = "core", "iface";
> + status = "disabled";
> + };
> +
> + intc: interrupt-controller@...0000 {
> + compatible = "qcom,msm-qgic2";
Please sort the properties (compatible and reg gotta go first, etc.).
> + interrupt-controller;
> + #interrupt-cells = <0x3>;
*-cells should be decimal.
> + reg = <0x0b000000 0x1000>, /*GICD*/
/* GICD */, please (and the next ones too)
> + <0x0b002000 0x1000>, /*GICC*/
> + <0x0b001000 0x1000>, /*GICH*/
> + <0x0b004000 0x1000>; /*GICV*/
> + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> + };
> +
> + timer@...0000 {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> + compatible = "arm,armv7-timer-mem";
> + reg = <0x0b120000 0x1000>;
> + clock-frequency = <19200000>;
Please sort the properties, also in subnodes.
Konrad
> +
> + 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";
> + };
> + };
> + };
> +};
>
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