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Subject: Re: [PATCH v6 7/7] arm64: dts: add dts nodes for MT6779
To:     Hanks Chen <hanks.chen@mediatek.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>,
        Sean Wang <sean.wang@kernel.org>
Cc:     mtk01761 <wendell.lin@mediatek.com>,
        Andy Teng <andy.teng@mediatek.com>, linux-gpio@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, wsd_upstream@mediatek.com,
        CC Hwang <cc.hwang@mediatek.com>,
        Loda Chou <loda.chou@mediatek.com>
References: <1592480018-3340-1-git-send-email-hanks.chen@mediatek.com>
 <1592480018-3340-8-git-send-email-hanks.chen@mediatek.com>
From:   Matthias Brugger <matthias.bgg@gmail.com>
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Message-ID: <3cbd81c1-0c68-80e2-d963-9ec7c0b7260c@gmail.com>
Date:   Mon, 22 Jun 2020 13:28:57 +0200
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On 18/06/2020 13:33, Hanks Chen wrote:
> this adds initial MT6779 dts settings for board support,
> including cpu, gic, timer, ccf, pinctrl, uart, sysirq...etc.
> 
> Signed-off-by: Hanks Chen <hanks.chen@mediatek.com>
> ---
>  arch/arm64/boot/dts/mediatek/Makefile       |    1 +
>  arch/arm64/boot/dts/mediatek/mt6779-evb.dts |   31 ++++
>  arch/arm64/boot/dts/mediatek/mt6779.dtsi    |  261 +++++++++++++++++++++++++++
>  3 files changed, 293 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/mediatek/mt6779-evb.dts
>  create mode 100644 arch/arm64/boot/dts/mediatek/mt6779.dtsi
> 
> diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> index a57af9d..4d1b0f9 100644
> --- a/arch/arm64/boot/dts/mediatek/Makefile
> +++ b/arch/arm64/boot/dts/mediatek/Makefile
> @@ -1,6 +1,7 @@
>  # SPDX-License-Identifier: GPL-2.0
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt2712-evb.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt6755-evb.dtb
> +dtb-$(CONFIG_ARCH_MEDIATEK) += mt6779-evb.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
>  dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
> diff --git a/arch/arm64/boot/dts/mediatek/mt6779-evb.dts b/arch/arm64/boot/dts/mediatek/mt6779-evb.dts
> new file mode 100644
> index 0000000..164f5cb
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt6779-evb.dts
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + * Author: Mars.C <mars.cheng@mediatek.com>
> + *
> + */
> +
> +/dts-v1/;
> +#include "mt6779.dtsi"
> +
> +/ {
> +	model = "MediaTek MT6779 EVB";
> +	compatible = "mediatek,mt6779-evb", "mediatek,mt6779";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	memory@40000000 {
> +		device_type = "memory";
> +		reg = <0 0x40000000 0 0x1e800000>;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:921600n8";
> +	};
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm64/boot/dts/mediatek/mt6779.dtsi b/arch/arm64/boot/dts/mediatek/mt6779.dtsi
> new file mode 100644
> index 0000000..64e5963
> --- /dev/null
> +++ b/arch/arm64/boot/dts/mediatek/mt6779.dtsi
> @@ -0,0 +1,261 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + * Author: Mars.C <mars.cheng@mediatek.com>
> + *
> + */
> +
> +#include <dt-bindings/clock/mt6779-clk.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/pinctrl/mt6779-pinfunc.h>
> +
> +/ {
> +	compatible = "mediatek,mt6779";
> +	interrupt-parent = <&sysirq>;
> +	#address-cells = <2>;
> +	#size-cells = <2>;
> +
> +	psci {
> +		compatible = "arm,psci-0.2";
> +		method = "smc";
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x000>;
> +		};
> +
> +		cpu1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x100>;
> +		};
> +
> +		cpu2: cpu@2 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x200>;
> +		};
> +
> +		cpu3: cpu@3 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x300>;
> +		};
> +
> +		cpu4: cpu@4 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x400>;
> +		};
> +
> +		cpu5: cpu@5 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a55";
> +			enable-method = "psci";
> +			reg = <0x500>;
> +		};
> +
> +		cpu6: cpu@6 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a75";
> +			enable-method = "psci";
> +			reg = <0x600>;
> +		};
> +
> +		cpu7: cpu@7 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a75";
> +			enable-method = "psci";
> +			reg = <0x700>;
> +		};
> +	};
> +
> +	pmu {
> +		compatible = "arm,armv8-pmuv3";
> +		interrupt-parent = <&gic>;
> +		interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_LOW 0>;
> +	};
> +
> +	clk26m: oscillator@0 {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <26000000>;
> +		clock-output-names = "clk26m";
> +	};
> +
> +	clk32k: oscillator@1 {
> +		compatible = "fixed-clock";
> +		#clock-cells = <0>;
> +		clock-frequency = <32768>;
> +		clock-output-names = "clk32k";
> +	};
> +
> +	timer {
> +		compatible = "arm,armv8-timer";
> +		interrupt-parent = <&gic>;
> +		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW 0>,
> +			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW 0>,
> +			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW 0>,
> +			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW 0>;
> +	};
> +
> +	soc {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		compatible = "simple-bus";
> +		ranges;
> +
> +		gic: interrupt-controller@0c000000 {
> +			compatible = "arm,gic-v3";
> +			#interrupt-cells = <4>;
> +			interrupt-parent = <&gic>;
> +			interrupt-controller;
> +			reg = <0 0x0c000000 0 0x40000>,  /* GICD */
> +			      <0 0x0c040000 0 0x200000>; /* GICR */
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH 0>;
> +
> +			ppi-partitions {
> +				ppi_cluster0: interrupt-partition-0 {
> +					affinity = <&cpu0 &cpu1 \
> +						&cpu2 &cpu3 &cpu4 &cpu5>;
> +				};
> +				ppi_cluster1: interrupt-partition-1 {
> +					affinity = <&cpu6 &cpu7>;
> +				};
> +			};
> +
> +		};
> +
> +		sysirq: intpol-controller@0c53a650 {
> +			compatible = "mediatek,mt6779-sysirq",
> +				     "mediatek,mt6577-sysirq";
> +			interrupt-controller;
> +			#interrupt-cells = <3>;
> +			interrupt-parent = <&gic>;
> +			reg = <0 0x0c53a650 0 0x50>;
> +		};
> +
> +		topckgen: clock-controller@10000000 {
> +			compatible = "mediatek,mt6779-topckgen", "syscon";
> +			reg = <0 0x10000000 0 0x1000>;
> +			#clock-cells = <1>;
> +		};
> +
> +		infracfg_ao: clock-controller@10001000 {
> +			compatible = "mediatek,mt6779-infracfg_ao", "syscon";
> +			reg = <0 0x10001000 0 0x1000>;
> +			#clock-cells = <1>;
> +		};
> +
> +		pio: pinctrl@10005000 {
> +			compatible = "mediatek,mt6779-pinctrl", "syscon";
> +			reg = <0 0x10005000 0 0x1000>,
> +			      <0 0x11c20000 0 0x1000>,
> +			      <0 0x11d10000 0 0x1000>,
> +			      <0 0x11e20000 0 0x1000>,
> +			      <0 0x11e70000 0 0x1000>,
> +			      <0 0x11ea0000 0 0x1000>,
> +			      <0 0x11f20000 0 0x1000>,
> +			      <0 0x11f30000 0 0x1000>,
> +			      <0 0x1000b000 0 0x1000>;
> +			reg-names = "gpio", "iocfg_rm",
> +				    "iocfg_br", "iocfg_lm",
> +				    "iocfg_lb", "iocfg_rt",
> +				    "iocfg_lt", "iocfg_tl",
> +				    "eint";
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio-ranges = <&pio 0 0 210>;
> +			interrupt-controller;
> +			#interrupt-cells = <2>;
> +			interrupts = <GIC_SPI 204 IRQ_TYPE_LEVEL_HIGH>;
> +		};
> +
> +		apmixed: clock-controller@1000c000 {
> +			compatible = "mediatek,mt6779-apmixed", "syscon";
> +			reg = <0 0x1000c000 0 0xe00>;
> +			#clock-cells = <1>;
> +		};
> +
> +		uart0: serial@11002000 {
> +			compatible = "mediatek,mt6779-uart",
> +				     "mediatek,mt6577-uart";
> +			reg = <0 0x11002000 0 0x400>;
> +			interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
> +			clocks = <&clk26m>, <&infracfg_ao CLK_INFRA_UART0>;
> +			clock-names = "baud", "bus";
> +			status = "disabled";
> +		};
> +
> +		uart1: serial@11003000 {
> +			compatible = "mediatek,mt6779-uart",
> +				     "mediatek,mt6577-uart";
> +			reg = <0 0x11003000 0 0x400>;
> +			interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_LOW>;
> +			clocks = <&clk26m>, <&infracfg_ao CLK_INFRA_UART1>;
> +			clock-names = "baud", "bus";
> +			status = "disabled";
> +		};
> +

For the record, my late comment on v5 was that we should expose all four UARTs
in the dtsi as it describes the HW.

Other then that, patch looks good.

Regards,
Matthias