Re: [PATCH 2/2] ARM: dts: mediatek: add mt6580 basic support
From: Mars Cheng
Date: Wed Jun 24 2015 - 07:55:06 EST
On Tue, 2015-06-23 at 12:29 -0700, Matthias Brugger wrote:
> 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@xxxxxxxxxxxx>
> > ---
> > 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@xxxxxxxxxxxx>
> > + *
> > + * 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.
Thanks for this suggestion. I will remove these two parameters in next
version.
>
> Apart instead of console please use stdout-path to specify to which uart the
> console should be connected.
Got it, the chosen node in the next version will be:
chosen {
bootargs = "console=ttyS0,921600n8 earlyprintk";
stdout-path = &uart0;
};
Thanks.
>
> 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@xxxxxxxxxxxx>
> > + *
> > + * 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@10008000 {
> > + 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@10200100 {
> > + compatible = "mediatek,mt6580-sysirq",
> > + "mediatek,mt6577-sysirq";
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > + interrupt-parent = <&gic>;
> > + reg = <0x10200100 0x1c>;
> > + };
> > +
> > + gic: interrupt-controller@10211000 {
> > + compatible = "arm,cortex-a7-gic";
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > + interrupt-parent = <&gic>;
> > + reg = <0x10211000 0x1000>,
> > + <0x10212000 0x1000>,
> > + <0x10214000 0x2000>,
> > + <0x10216000 0x2000>;
> > + };
> > +
> > + uart0: serial@11005000 {
> > + 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@11006000 {
> > + 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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