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Date: Tue, 23 Jun 2015 12:29:07 -0700 (PDT)
From: Matthias Brugger <matthias.bgg@...il.com>
To: Mars Cheng <mars.cheng@...iatek.com>
Cc: linux-arm-kernel@...ts.infradead.or, linux-kernel@...r.kernel.org,
linux-mediatek@...ts.infradead.org,
Yingjoe Chen <yingjoe.chen@...iatek.com>,
CC Hwang <cc.hwang@...iatek.com>,
Jades Shih <jades.shih@...iatek.com>,
Loda Chou <loda.chou@...iatek.com>,
Miles Chen <miles.chen@...iatek.com>,
MY Chuang <my.chuang@...iatek.com>,
Scott Shu <scott.shu@...iatek.com>
Subject: Re: [PATCH 2/2] ARM: dts: mediatek: add mt6580 basic support
On Wednesday, June 03, 2015 04:18:53 PM Mars Cheng wrote:
> This enables mt6580 basic support: interrupt, timer & uart.
>
> Signed-off-by: Mars Cheng <mars.cheng@...iatek.com>
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/mt6580-evbp1.dts | 34 ++++++++++
> arch/arm/boot/dts/mt6580.dtsi | 130
> +++++++++++++++++++++++++++++++++++++ 3 files changed, 165 insertions(+)
> create mode 100644 arch/arm/boot/dts/mt6580-evbp1.dts
> create mode 100644 arch/arm/boot/dts/mt6580.dtsi
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 86217db..9298531 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -656,6 +656,7 @@ dtb-$(CONFIG_MACH_DOVE) += \
> dove-d3plug.dtb \
> dove-dove-db.dtb
> dtb-$(CONFIG_ARCH_MEDIATEK) += \
> + mt6580-evbp1.dtb \
> mt6589-aquaris5.dtb \
> mt6592-evb.dtb \
> mt8127-moose.dtb \
> diff --git a/arch/arm/boot/dts/mt6580-evbp1.dts
> b/arch/arm/boot/dts/mt6580-evbp1.dts new file mode 100644
> index 0000000..fbc0e10
> --- /dev/null
> +++ b/arch/arm/boot/dts/mt6580-evbp1.dts
> @@ -0,0 +1,34 @@
> +/*
> + * Copyright (c) 2015 MediaTek Inc.
> + * Author: Mars.C <mars.cheng@...iatek.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +/dts-v1/;
> +#include "mt6580.dtsi"
> +
> +/ {
> + model = "MediaTek MT6580 evaluation board";
> + compatible = "mediatek,mt6580-evbp1", "mediatek,mt6580";
> +
> + chosen {
> + bootargs = "console=ttyS0,921600n8 root=/dev/ram
> initrd=0x88000000,0x400000 earlyprintk"; + };
the root and initrd parameters seems really specific for your way you boot the
board, but are not necessary to boot e.g. with a initramfs.
Please delete this two parameters.
Apart instead of console please use stdout-path to specify to which uart the
console should be connected.
Thanks,
Matthias
> +
> + memory {
> + reg = <0x80000000 0x20000000>;
> + };
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
> +
> diff --git a/arch/arm/boot/dts/mt6580.dtsi b/arch/arm/boot/dts/mt6580.dtsi
> new file mode 100644
> index 0000000..de669e2
> --- /dev/null
> +++ b/arch/arm/boot/dts/mt6580.dtsi
> @@ -0,0 +1,130 @@
> +/*
> + * Copyright (c) 2015 MediaTek Inc.
> + * Author: Mars.C <mars.cheng@...iatek.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include "skeleton.dtsi"
> +
> +/ {
> + compatible = "mediatek,mt6580";
> + interrupt-parent = <&sysirq>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu@0 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x0>;
> + };
> + cpu@1 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x1>;
> + };
> + cpu@2 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x2>;
> + };
> + cpu@3 {
> + device_type = "cpu";
> + compatible = "arm,cortex-a7";
> + reg = <0x3>;
> + };
> +
> + };
> +
> + clocks {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "simple-bus";
> + ranges;
> +
> + system_clk: dummy13m {
> + compatible = "fixed-clock";
> + clock-frequency = <13000000>;
> + #clock-cells = <0>;
> + };
> +
> + rtc_clk: dummy32k {
> + compatible = "fixed-clock";
> + clock-frequency = <32000>;
> + #clock-cells = <0>;
> + };
> +
> + uart_clk: dummy26m {
> + compatible = "fixed-clock";
> + clock-frequency = <26000000>;
> + #clock-cells = <0>;
> + };
> + };
> +
> + soc {
> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "simple-bus";
> + ranges;
> +
> + timer: timer@...08000 {
> + compatible = "mediatek,mt6580-timer",
> + "mediatek,mt6577-timer";
> + reg = <0x10008000 0x80>;
> + interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&system_clk>, <&rtc_clk>;
> + clock-names = "system-clk", "rtc-clk";
> + };
> +
> + sysirq: interrupt-controller@...00100 {
> + compatible = "mediatek,mt6580-sysirq",
> + "mediatek,mt6577-sysirq";
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + interrupt-parent = <&gic>;
> + reg = <0x10200100 0x1c>;
> + };
> +
> + gic: interrupt-controller@...11000 {
> + compatible = "arm,cortex-a7-gic";
> + interrupt-controller;
> + #interrupt-cells = <3>;
> + interrupt-parent = <&gic>;
> + reg = <0x10211000 0x1000>,
> + <0x10212000 0x1000>,
> + <0x10214000 0x2000>,
> + <0x10216000 0x2000>;
> + };
> +
> + uart0: serial@...05000 {
> + compatible = "mediatek,mt6580-uart",
> + "mediatek,mt6577-uart";
> + reg = <0x11005000 0x400>;
> + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + clock-names = "baud";
> + status = "disabled";
> + };
> +
> + uart1: serial@...06000 {
> + compatible = "mediatek,mt6580-uart",
> + "mediatek,mt6577-uart";
> + reg = <0x11006000 0x400>;
> + interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_LOW>;
> + clocks = <&uart_clk>;
> + clock-names = "baud";
> + status = "disabled";
> + };
> + };
> +};
--
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