On Fri, 2018-05-11 at 10:36 +0200, Matthias Brugger wrote:
>
> On 05/11/2018 08:11 AM, Erin Lo wrote:
> > From: Ben Ho <Ben.Ho@xxxxxxxxxxxx>
> >
> > Add basic chip support for Mediatek 8183
> >
> > Signed-off-by: Ben Ho <Ben.Ho@xxxxxxxxxxxx>
> > Signed-off-by: Erin Lo <erin.lo@xxxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/mediatek/Makefile | 1 +
> > arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 31 +++++
> > arch/arm64/boot/dts/mediatek/mt8183.dtsi | 178 ++++++++++++++++++++++++++++
> > 3 files changed, 210 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt8183-evb.dts
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt8183.dtsi
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> > index ac17f60..2836261 100644
> > --- a/arch/arm64/boot/dts/mediatek/Makefile
> > +++ b/arch/arm64/boot/dts/mediatek/Makefile
> > @@ -5,3 +5,4 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-evb.dtb
> > +dtb-$(CONFIG_ARCH_MEDIATEK) += mt8183-evb.dtb
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
> > new file mode 100644
> > index 0000000..9a3d6b7
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts
> > @@ -0,0 +1,31 @@
> > +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > +/*
> > + * Copyright (c) 2017 MediaTek Inc.
> > + * Author: Ben Ho <ben.ho@xxxxxxxxxxxx>
> > + * Erin Lo <erin.lo@xxxxxxxxxxxx>
> > + */
> > +
> > +/dts-v1/;
> > +#include "mt8183.dtsi"
> > +
> > +/ {
> > + model = "MediaTek MT8183 evaluation board";
> > + compatible = "mediatek,mt8183-evb", "mediatek,mt8183";
> > +
> > + aliases {
> > + serial0 = &uart0;
> > + };
> > +
> > + memory@40000000 {
> > + device_type = "memory";
> > + reg = <0 0x40000000 0 0x80000000>;
> > + };
> > +
> > + chosen {
> > + stdout-path = "serial0:921600n8";
> > + };
> > +};
> > +
> > +&uart0 {
> > + status = "okay";
> > +};
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> > new file mode 100644
> > index 0000000..8564a26
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> > @@ -0,0 +1,178 @@
> > +// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > +/*
> > + * Copyright (c) 2017 MediaTek Inc.
> > + * Author: Ben Ho <ben.ho@xxxxxxxxxxxx>
> > + * Erin Lo <erin.lo@xxxxxxxxxxxx>
> > + */
> > +
> > +#include <dt-bindings/interrupt-controller/irq.h>
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +/ {
> > + compatible = "mediatek,mt8183";
> > + interrupt-parent = <&sysirq>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + cpus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + cpu-map {
> > + cluster0 {
> > + core0 {
> > + cpu = <&cpu0>;
> > + };
> > + core1 {
> > + cpu = <&cpu1>;
> > + };
> > + core2 {
> > + cpu = <&cpu2>;
> > + };
> > + core3 {
> > + cpu = <&cpu3>;
> > + };
> > + };
> > +
> > + cluster1 {
> > + core0 {
> > + cpu = <&cpu4>;
> > + };
> > + core1 {
> > + cpu = <&cpu5>;
> > + };
> > + core2 {
> > + cpu = <&cpu6>;
> > + };
> > + core3 {
> > + cpu = <&cpu7>;
> > + };
> > + };
> > + };
> > +
> > + cpu0: cpu@000 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + reg = <0x000>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu1: cpu@001 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + reg = <0x001>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu2: cpu@002 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + reg = <0x002>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu3: cpu@003 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + reg = <0x003>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu4: cpu@100 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a73";
> > + reg = <0x100>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu5: cpu@101 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a73";
> > + reg = <0x101>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu6: cpu@102 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a73";
> > + reg = <0x102>;
> > + enable-method = "psci";
> > + };
> > +
> > + cpu7: cpu@103 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a73";
> > + reg = <0x103>;
> > + enable-method = "psci";
> > + };
> > + };
> > +
> > + psci {
> > + compatible = "arm,psci-1.0";
> > + method = "smc";
> > + };
> > +
> > + uart_clk: dummy26m {
> > + compatible = "fixed-clock";
> > + clock-frequency = <26000000>;
> > + #clock-cells = <0>;
> > + };
> > +
> > + timer {
> > + compatible = "arm,armv8-timer";
> > + interrupt-parent = <&gic>;
> > + interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
> > + <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
> > + <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
> > + <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
> > + };
> > +
> > + gic: interrupt-controller@0c000000 {
> > + compatible = "arm,gic-v3";
> > + #interrupt-cells = <3>;
> > + interrupt-parent = <&gic>;
> > + interrupt-controller;
> > + reg = <0 0x0c000000 0 0x40000>, // CID
> > + <0 0x0c100000 0 0x200000>; // CIR
> > + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> > + };
> > +
> > + sysirq: intpol-controller@0c530a80 {
> > + compatible = "mediatek,mt8183-sysirq",
> > + "mediatek,mt6577-sysirq";
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > + interrupt-parent = <&gic>;
> > + reg = <0 0x0c530a80 0 0x50>;
> > + };
> > +
> > + uart0: serial@11002000 {
> > + compatible = "mediatek,mt8183-uart",
> > + "mediatek,mt6577-uart";
> > + reg = <0 0x11002000 0 0x1000>;
> > + interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
> > + clocks = <&uart_clk>, <&uart_clk>;
> > + clock-names = "baud", "bus";
> > + status = "disabled";
> > + };
> > +
> > + uart1: serial@11003000 {
> > + compatible = "mediatek,mt8183-uart",
> > + "mediatek,mt6577-uart";
> > + reg = <0 0x11003000 0 0x1000>;
> > + interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_LOW>;
> > + clocks = <&uart_clk>, <&uart_clk>;
> > + clock-names = "baud", "bus";
> > + status = "disabled";
> > + };
> > +
> > + uart2: serial@11004000 {
> > + compatible = "mediatek,mt8183-uart",
> > + "mediatek,mt6577-uart";
> > + reg = <0 0x11004000 0 0x1000>;
> > + interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_LOW>;
> > + clocks = <&uart_clk>, <&uart_clk>;
> > + clock-names = "baud", "bus";
> > + status = "disabled";
> > + };
> > +};
> >
>
> I wonder if there aren't any other devices which can be supported out of the box.
> I understand that for now we are missing the clock driver and the pinctrl
> driver. Are you planning to submit them in the near future?
>
> I'm asking because I don't want to bloat the dts with boards that only can boot
> to an initramfs with a serial console. Especially if there is no HW + datasheet
> available for anyone in the community who wants to work on this.
>
> Regards,
> Matthias
>
> Regards,
> Matthias
We have implement clock and pinctrl driver these days, and plan to
submit them maybe next month.
After that we will submit other drivers of MT8183 continuously.
Regards,
Erin
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