Subject: Re: [PATCH 3/3] ARM: dts: Prepare Realtek RTD1195 and MeLE X1000

From: Rob Herring <[email-masked]>
Date: Tue, 29 Oct 2019 10:41:29 -0500

On Mon, Oct 21, 2019 at 04:10:35AM +0200, Andreas Färber wrote:
> Add Device Trees for Realtek RTD1195 SoC and MeLE X1000 TV box.
> 
> Reuse the existing RTD1295 watchdog compatible for now.
> 
> Signed-off-by: Andreas Färber <[email-masked]>
> ---
>  arch/arm/boot/dts/Makefile               |   2 +
>  arch/arm/boot/dts/rtd1195-mele-x1000.dts |  30 ++++++++
>  arch/arm/boot/dts/rtd1195.dtsi           | 128 +++++++++++++++++++++++++++++++
>  3 files changed, 160 insertions(+)
>  create mode 100644 arch/arm/boot/dts/rtd1195-mele-x1000.dts
>  create mode 100644 arch/arm/boot/dts/rtd1195.dtsi
> 
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 73d33611c372..89a951485da8 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -858,6 +858,8 @@ dtb-$(CONFIG_ARCH_QCOM) += \
>  dtb-$(CONFIG_ARCH_RDA) += \
>  	rda8810pl-orangepi-2g-iot.dtb \
>  	rda8810pl-orangepi-i96.dtb
> +dtb-$(CONFIG_ARCH_REALTEK) += \
> +	rtd1195-mele-x1000.dtb
>  dtb-$(CONFIG_ARCH_REALVIEW) += \
>  	arm-realview-pb1176.dtb \
>  	arm-realview-pb11mp.dtb \
> diff --git a/arch/arm/boot/dts/rtd1195-mele-x1000.dts b/arch/arm/boot/dts/rtd1195-mele-x1000.dts
> new file mode 100644
> index 000000000000..ce9a255950d3
> --- /dev/null
> +++ b/arch/arm/boot/dts/rtd1195-mele-x1000.dts
> @@ -0,0 +1,30 @@
> +// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
> +/*
> + * Copyright (c) 2017 Andreas Färber

2019?

> + */
> +
> +/dts-v1/;
> +
> +#include "rtd1195.dtsi"
> +
> +/ {
> +	compatible = "mele,x1000", "realtek,rtd1195";
> +	model = "MeLE X1000";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	memory {

memory@0

> +		device_type = "memory";
> +		reg = <0x0 0x40000000>;
> +	};
> +};
> +
> +&uart0 {
> +	status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/rtd1195.dtsi b/arch/arm/boot/dts/rtd1195.dtsi
> new file mode 100644
> index 000000000000..475740c67d26
> --- /dev/null
> +++ b/arch/arm/boot/dts/rtd1195.dtsi
> @@ -0,0 +1,128 @@
> +// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
> +/*
> + * Copyright (c) 2017 Andreas Färber
> + */
> +
> +/memreserve/ 0x00000000 0x0000c000; /* boot code */
> +/memreserve/ 0x0000c000 0x000f4000;
> +/memreserve/ 0x01b00000 0x00400000; /* audio */
> +/memreserve/ 0x01ffe000 0x00004000; /* rpc ringbuf */
> +/memreserve/ 0x10000000 0x00100000; /* secure */
> +/memreserve/ 0x17fff000 0x00001000;
> +/memreserve/ 0x18000000 0x00100000; /* rbus */
> +/memreserve/ 0x18100000 0x01000000; /* nor */

You shouldn't have the same entries here and in /reserved-memory. There 
was a time before /reserved-memory was fully supported, but we should be 
well past that now.

> +
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +/ {
> +	compatible = "realtek,rtd1195";
> +	interrupt-parent = <&gic>;
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		cpu0: cpu@0 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x0>;
> +			clock-frequency = <1000000000>;
> +		};
> +
> +		cpu1: cpu@1 {
> +			device_type = "cpu";
> +			compatible = "arm,cortex-a7";
> +			reg = <0x1>;
> +			clock-frequency = <1000000000>;
> +		};
> +	};
> +
> +	reserved-memory {
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		secure@10000000 {
> +			reg = <0x10000000 0x100000>;
> +			no-map;
> +		};
> +
> +		rbus@18000000 {
> +			reg = <0x18000000 0x100000>;
> +			no-map;

This doesn't look right as it overlaps the register space. 

> +		};
> +
> +		nor@18100000 {
> +			reg = <0x18100000 0x1000000>;
> +			no-map;
> +		};
> +	};
> +
> +	arm-pmu {
> +		compatible = "arm,cortex-a7-pmu";
> +		interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>,
> +			     <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
> +		interrupt-affinity = <&cpu0>, <&cpu1>;
> +	};
> +
> +	timer {
> +		compatible = "arm,armv7-timer";
> +		interrupts = <GIC_PPI 13
> +			(GIC_CPU_MASK_RAW(0xf) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 14
> +			(GIC_CPU_MASK_RAW(0xf) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 11
> +			(GIC_CPU_MASK_RAW(0xf) | IRQ_TYPE_LEVEL_LOW)>,
> +			     <GIC_PPI 10
> +			(GIC_CPU_MASK_RAW(0xf) | IRQ_TYPE_LEVEL_LOW)>;
> +		clock-frequency = <27000000>;
> +	};
> +
> +	osc27M: osc {
> +		compatible = "fixed-clock";
> +		clock-frequency = <27000000>;
> +		#clock-cells = <0>;
> +		clock-output-names = "osc27M";
> +	};
> +
> +	soc {
> +		compatible = "simple-bus";
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		ranges;
> +
> +		wdt: watchdog@18007680 {
> +			compatible = "realtek,rtd1295-watchdog";
> +			reg = <0x18007680 0x100>;
> +			clocks = <&osc27M>;
> +		};
> +
> +		uart0: serial@18007800 {
> +			compatible = "snps,dw-apb-uart";
> +			reg = <0x18007800 0x400>;
> +			reg-shift = <2>;
> +			reg-io-width = <4>;
> +			clock-frequency = <27000000>;
> +			status = "disabled";
> +		};
> +
> +		uart1: serial@1801b200 {
> +			compatible = "snps,dw-apb-uart";
> +			reg = <0x1801b200 0x100>;
> +			reg-shift = <2>;
> +			reg-io-width = <4>;
> +			clock-frequency = <27000000>;
> +			status = "disabled";
> +		};
> +
> +		gic: interrupt-controller@ff011000 {
> +			compatible = "arm,cortex-a7-gic";
> +			reg = <0xff011000 0x1000>,
> +			      <0xff012000 0x2000>;
> +			interrupt-controller;
> +			#interrupt-cells = <3>;
> +		};
> +	};
> +};
> -- 
> 2.16.4
> 

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