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Date: Fri, 17 Oct 2014 14:00:40 +0100
From: Mark Rutland <mark.rutland@....com>
To: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
Cc: Catalin Marinas <Catalin.Marinas@....com>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
"jslaby@...e.cz" <jslaby@...e.cz>,
"galak@...eaurora.org" <galak@...eaurora.org>,
"broonie@...aro.org" <broonie@...aro.org>,
"m-karicheri2@...com" <m-karicheri2@...com>,
Pawel Moll <Pawel.Moll@....com>,
"artagnon@...il.com" <artagnon@...il.com>,
"rrichter@...ium.com" <rrichter@...ium.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
Will Deacon <Will.Deacon@....com>,
"orsonzhai@...il.com" <orsonzhai@...il.com>,
"geng.ren@...eadtrum.com" <geng.ren@...eadtrum.com>,
"zhizhou.zhang@...eadtrum.com" <zhizhou.zhang@...eadtrum.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"sprdlinux@...elists.org" <sprdlinux@...elists.org>
Subject: Re: [PATCH v2 3/5] arm64: dts: Add support for Spreadtrum Sharkl3
SoC in dts and Makefile.
On Fri, Oct 17, 2014 at 10:54:23AM +0100, Chunyan Zhang wrote:
> From: Zhizhou Zhang <zhizhou.zhang@...eadtrum.com>
>
> Adds the device tree support for Spreadtrum Sharkl3 SoC which is based on
> Sharkl platform.
>
> Sharkl platform contains the common nodes of Spreadtrum's arm64-based SoCs.
>
> Signed-off-by: Zhizhou Zhang <zhizhou.zhang@...eadtrum.com>
> Signed-off-by: Chunyan Zhang <chunyan.zhang@...eadtrum.com>
> ---
> arch/arm64/boot/dts/Makefile | 1 +
> arch/arm64/boot/dts/sprd-sharkl.dtsi | 33 ++++++++++++++
> arch/arm64/boot/dts/sprd-sharkl3-fpga.dts | 41 +++++++++++++++++
> arch/arm64/boot/dts/sprd-sharkl3.dtsi | 69 +++++++++++++++++++++++++++++
> 4 files changed, 144 insertions(+)
> create mode 100644 arch/arm64/boot/dts/sprd-sharkl.dtsi
> create mode 100644 arch/arm64/boot/dts/sprd-sharkl3-fpga.dts
> create mode 100644 arch/arm64/boot/dts/sprd-sharkl3.dtsi
>
> diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
> index c52bdb0..0030e44 100644
> --- a/arch/arm64/boot/dts/Makefile
> +++ b/arch/arm64/boot/dts/Makefile
> @@ -1,3 +1,4 @@
> +dtb-$(CONFIG_ARCH_SHARKL) += sprd-sharkl3-fpga.dtb
> dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb foundation-v8.dtb
> dtb-$(CONFIG_ARCH_XGENE) += apm-mustang.dtb
>
> diff --git a/arch/arm64/boot/dts/sprd-sharkl.dtsi b/arch/arm64/boot/dts/sprd-sharkl.dtsi
> new file mode 100644
> index 0000000..26a28c3
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd-sharkl.dtsi
> @@ -0,0 +1,33 @@
> +/*
> + * dtsi file for Spreadtrum(sprd) Sharkl Platform based on AArch64.
> + *
> + * Copyright (C) 2014, Spreadtrum Communications Inc.
> + *
> + * Sharkl Platform is the base of Spreadtrum arm64 SoCs whose common
> + * nodes are listed in this file.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + */
> +
> +/ {
> + interrupt-parent = <&gic>;
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + uart0: serial@...00000 {
> + compatible = "sprd,serial";
> + reg = <0 0x70000000 0 0x100>;
> + interrupts = <0 2 0xf04>;
> + status = "disabled";
> + };
> +
> + uart1: serial@...00000 {
> + compatible = "sprd,serial";
> + reg = <0 0x70100000 0 0x100>;
> + interrupts = <0 3 0xf04>;
> + status = "disabled";
> + };
> +};
> diff --git a/arch/arm64/boot/dts/sprd-sharkl3-fpga.dts b/arch/arm64/boot/dts/sprd-sharkl3-fpga.dts
> new file mode 100644
> index 0000000..faa0a2e
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd-sharkl3-fpga.dts
> @@ -0,0 +1,41 @@
> +/*
> + * DTS file for Spreadtrum(sprd) Sharkl3 FPGA board based on
> + * the Sharkl Platform.
> + *
> + * Copyright (C) 2014, Spreadtrum Communications Inc.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + */
> +
> +/dts-v1/;
> +
> +#include "sprd-sharkl3.dtsi"
> +
> +/ {
> + model = "Spreadtrum Sharkl3 FPGA board";
For some reason this line begins with spaces rather than a tab, which
breaks the alignment and is a little annoying. Could you please fix the
spaces here to a tab?
> +
> + compatible = "sprd,sharkl3-fpga", "sprd,sharkl3";
> +
> + aliases {
> + };
> +
> + memory@...00000 {
> + device_type = "memory";
> + reg = <0 0x80000000 0 0x20000000>;
> + };
> +
> + chosen {
> + stdout-path = &uart0;
> + };
> +
> + uart0: serial@...00000 {
> + status = "okay";
> + };
> +
> + uart1: serial@...00000 {
> + status = "okay";
> + };
> +};
> diff --git a/arch/arm64/boot/dts/sprd-sharkl3.dtsi b/arch/arm64/boot/dts/sprd-sharkl3.dtsi
> new file mode 100644
> index 0000000..0ab4a94
> --- /dev/null
> +++ b/arch/arm64/boot/dts/sprd-sharkl3.dtsi
> @@ -0,0 +1,69 @@
> +/*
> + * dtsi file for Spreadtrum(sprd) Sharkl3 SoC based on the Sharkl Platform.
> + *
> + * Copyright (C) 2014, Spreadtrum Communications Inc.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + */
> +
> +#include "sprd-sharkl.dtsi"
> +
> +/ {
> + compatible = "sprd,sharkl3";
> +
> + gic: interrupt-controller@...01000 {
> + compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic";
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + reg = <0 0x12001000 0 0x1000>,
> + <0 0x12002000 0 0x1000>,
> + <0 0x12004000 0 0x2000>,
> + <0 0x12006000 0 0x2000>;
> + };
Could we move this after the cpus node please?
> +
> + cpus {
> + #address-cells = <2>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,armv8";
Could we have the compatible string for the actual CPU rather than just
"arm,armv8"?
> + reg = <0x0 0x0>;
> + enable-method = "psci";
> + };
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,armv8";
> + reg = <0x0 0x1>;
> + enable-method = "psci";
> + };
> + cpu@2 {
> + device_type = "cpu";
> + compatible = "arm,armv8";
> + reg = <0x0 0x2>;
> + enable-method = "psci";
> + };
> + cpu@3 {
> + device_type = "cpu";
> + compatible = "arm,armv8";
> + reg = <0x0 0x3>;
> + enable-method = "psci";
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
What are you using as your PSCI implementation?
> + timer {
> + compatible = "arm,armv8-timer";
> + interrupts = <1 13 0xff01>,
> + <1 14 0xff01>,
> + <1 11 0xff01>,
> + <1 10 0xff01>;
> + };
I take it that CNTFRQ is programmed correctly on all CPUs?
Thanks,
Mark.
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