Re: [PATCH v2 2/2] arm64: dts: mediatek: add mt6765 support

From: Mars Cheng
Date: Tue Jul 03 2018 - 20:30:14 EST

Hi Rob

On Mon, 2018-07-02 at 15:50 -0600, Rob Herring wrote:
> On Mon, Jun 25, 2018 at 8:04 PM Mars Cheng <mars.cheng@xxxxxxxxxxxx> wrote:
> >
> > This adds basic chip support for MT6765 SoC.
> >
> > Signed-off-by: Mars Cheng <mars.cheng@xxxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/mediatek/Makefile | 1 +
> > arch/arm64/boot/dts/mediatek/mt6765-evb.dts | 33 ++++++
> > arch/arm64/boot/dts/mediatek/mt6765.dtsi | 158 +++++++++++++++++++++++++++
> > 3 files changed, 192 insertions(+)
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt6765-evb.dts
> > create mode 100644 arch/arm64/boot/dts/mediatek/mt6765.dtsi
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
> > index ac17f60..7506b0d 100644
> > --- a/arch/arm64/boot/dts/mediatek/Makefile
> > +++ b/arch/arm64/boot/dts/mediatek/Makefile
> > @@ -1,6 +1,7 @@
> > # SPDX-License-Identifier: GPL-2.0
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt2712-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6755-evb.dtb
> > +dtb-$(CONFIG_ARCH_MEDIATEK) += mt6765-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6795-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
> > dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
> > diff --git a/arch/arm64/boot/dts/mediatek/mt6765-evb.dts b/arch/arm64/boot/dts/mediatek/mt6765-evb.dts
> > new file mode 100644
> > index 0000000..36dddff2
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt6765-evb.dts
> > @@ -0,0 +1,33 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * dts file for Mediatek MT6765
> > + *
> > + * (C) Copyright 2018. Mediatek, Inc.
> > + *
> > + * Mars Cheng <mars.cheng@xxxxxxxxxxxx>
> > + */
> > +
> > +/dts-v1/;
> > +#include "mt6765.dtsi"
> > +
> > +/ {
> > + model = "MediaTek MT6765 EVB";
> > + compatible = "mediatek,mt6765-evb", "mediatek,mt6765";
> > +
> > + aliases {
> > + serial0 = &uart0;
> > + };
> > +
> > + memory@40000000 {
> > + device_type = "memory";
> > + reg = <0 0x40000000 0 0x1e800000>;
> > + };
> > +
> > + chosen {
> > + stdout-path = "serial0:921600n8";
> > + };
> > +};
> > +
> > +&uart0 {
> > + status = "okay";
> > +};
> > diff --git a/arch/arm64/boot/dts/mediatek/mt6765.dtsi b/arch/arm64/boot/dts/mediatek/mt6765.dtsi
> > new file mode 100644
> > index 0000000..ab34c0f
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt6765.dtsi
> > @@ -0,0 +1,158 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * dts file for Mediatek MT6765
> > + *
> > + * (C) Copyright 2018. Mediatek, Inc.
> > + *
> > + * Mars Cheng <mars.cheng@xxxxxxxxxxxx>
> > + */
> > +
> > +#include <dt-bindings/interrupt-controller/irq.h>
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +/ {
> > + compatible = "mediatek,mt6765";
> > + interrupt-parent = <&sysirq>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > +
> > + psci {
> > + compatible = "arm,psci-0.2";
> > + method = "smc";
> > + };
> > +
> > + cpus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + cpu0: cpu@0 {
>
> Really need labels for cpu nodes?
>

Yes, I can drop them.

> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x000>;
> > + };
> > +
> > + cpu1: cpu@1 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x001>;
> > + };
> > +
> > + cpu2: cpu@2 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x002>;
> > + };
> > +
> > + cpu3: cpu@3 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x003>;
> > + };
> > +
> > + cpu4: cpu@100 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x100>;
> > + };
> > +
> > + cpu5: cpu@101 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x101>;
> > + };
> > +
> > + cpu6: cpu@102 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x102>;
> > + };
> > +
> > + cpu7: cpu@103 {
> > + device_type = "cpu";
> > + compatible = "arm,cortex-a53";
> > + enable-method = "psci";
> > + reg = <0x103>;
> > + };
> > + };
> > +
> > + baud_clk: dummy26m {
> > + compatible = "fixed-clock";
> > + clock-frequency = <26000000>;
> > + #clock-cells = <0>;
> > + };
> > +
> > + sys_clk: dummyclk {
> > + compatible = "fixed-clock";
> > + clock-frequency = <26000000>;
> > + #clock-cells = <0>;
> > + };
> > +
> > + timer {
> > + compatible = "arm,armv8-timer";
> > + interrupt-parent = <&gic>;
> > + interrupts = <GIC_PPI 13
> > + (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
> > + <GIC_PPI 14
> > + (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
> > + <GIC_PPI 11
> > + (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>,
> > + <GIC_PPI 10
> > + (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
> > + };
> > +
> > + soc {
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + compatible = "simple-bus";
> > + ranges;
> > +
> > + sysirq: intpol-controller@10200a80 {
>
> interrupt-controller@...


My mistake, did not fix this in v2, will correct it.

>
> > + compatible = "mediatek,mt6765-sysirq",
> > + "mediatek,mt6577-sysirq";
> > + interrupt-controller;
> > + #interrupt-cells = <3>;
> > + interrupt-parent = <&gic>;
> > + reg = <0 0x10200a80 0 0x50>;
> > + };
> > +
> > + gic: interrupt-controller@0c000000 {
>
> Drop the leading 0. Build your dts with W=12 and fix the warnings like this.

Thanks for suggestion. Will avoid this kind of errors.

>
> > + compatible = "arm,gic-v3";
> > + #interrupt-cells = <3>;
> > + #address-cells = <2>;
> > + #size-cells = <2>;
> > + #redistributor-regions = <1>;
> > + interrupt-parent = <&gic>;
> > + interrupt-controller;
> > + reg = <0 0x0c000000 0 0x40000>, // distributor
> > + <0 0x0c100000 0 0x200000>; // redistributor
> > + interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> > + };
> > +
> > + uart0: serial@11002000 {
> > + compatible = "mediatek,mt6765-uart",
> > + "mediatek,mt6577-uart";
> > + reg = <0 0x11002000 0 0x400>;
> > + interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
> > + clocks = <&baud_clk>, <&sys_clk>;
> > + clock-names = "baud", "bus";
> > + status = "disabled";
> > + };
> > +
> > + uart1: serial@11003000 {
> > + compatible = "mediatek,mt6765-uart",
> > + "mediatek,mt6577-uart";
> > + reg = <0 0x11003000 0 0x400>;
> > + interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_LOW>;
> > + clocks = <&baud_clk>, <&sys_clk>;
> > + clock-names = "baud", "bus";
> > + status = "disabled";
> > + };
> > + }; /* end of soc */
> > +};
> > --
> > 1.7.9.5
> >