Subject: [PATCH v3 2/3] arm64: dts: mt7622: add basic nodes to the mt7622.dtsi file

From: [email-masked] (Sean Wang)
Date: Fri, 9 Jun 2017 00:07:42 +0800

On Thu, 2017-06-08 at 15:52 +0200, Matthias Brugger wrote:
> 
> On 31/05/17 19:29, sean.wang at mediatek.com wrote:
> > From: Sean Wang <[email-masked]>
> > 
> > add basic nodes into the mt7622.dtsi for the system
> > bring-up which includes ARM CPU, GIC, timer, MediaTek
> > UART, SYSIRQ and one reserved memory region for ATF.
> > 
> > Signed-off-by: Sean Wang <[email-masked]>
> > ---
> >   arch/arm64/boot/dts/mediatek/mt7622.dtsi | 103 +++++++++++++++++++++++++++++++
> >   1 file changed, 103 insertions(+)
> >   create mode 100644 arch/arm64/boot/dts/mediatek/mt7622.dtsi
> > 
> > diff --git a/arch/arm64/boot/dts/mediatek/mt7622.dtsi b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> > new file mode 100644
> > index 0000000..2031b73
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
> > @@ -0,0 +1,103 @@
> > +/*
> > + * Copyright (c) 2017 MediaTek Inc.
> > + * Author: Ming Huang <[email-masked]>
> > + *	   Sean Wang <[email-masked]>
> > + *
> > + * SPDX-License-Identifier: (GPL-2.0 OR MIT)
> > + */
> > +
> > +#include <dt-bindings/interrupt-controller/irq.h>
> > +#include <dt-bindings/interrupt-controller/arm-gic.h>
> > +
> > +/ {
> > +	compatible = "mediatek,mt7622";
> > +	interrupt-parent = <&sysirq>;
> > +	#address-cells = <2>;
> > +	#size-cells = <2>;
> > +
> > +	cpus {
> > +		#address-cells = <2>;
> > +		#size-cells = <0>;
> > +
> > +		cpu0: cpu at 0 {
> > +			device_type = "cpu";
> > +			compatible = "arm,cortex-a53", "arm,armv8";
> > +			reg = <0x0 0x0>;
> > +			enable-method = "psci";
> > +			clock-frequency = <1300000000>;
> > +		};
> > +
> > +		cpu1: cpu at 1 {
> > +			device_type = "cpu";
> > +			compatible = "arm,cortex-a53", "arm,armv8";
> > +			reg = <0x0 0x1>;
> > +			enable-method = "psci";
> > +			clock-frequency = <1300000000>;
> > +		};
> > +	};
> > +
> > +	uart_clk: dummy26m {
> > +		compatible = "fixed-clock";
> > +		#clock-cells = <0>;
> > +		clock-frequency = <25000000>;
> > +	};
> > +
> > +	psci {
> > +		compatible  = "arm,psci-0.2";
> > +		method      = "smc";
> > +	};
> > +
> > +	reserved-memory {
> > +		#address-cells = <2>;
> > +		#size-cells = <2>;
> > +		ranges;
> > +
> > +		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
> > +		secmon_reserved: secmon at 43000000 {
> > +			reg = <0 0x43000000 0 0x30000>;
> > +			no-map;
> > +		};
> > +	};
> > +
> > +	timer {
> > +		compatible = "arm,armv8-timer";
> > +		interrupt-parent = <&gic>;
> > +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
> > +			      IRQ_TYPE_LEVEL_HIGH)>,
> > +			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
> > +			      IRQ_TYPE_LEVEL_HIGH)>,
> > +			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(2) |
> > +			      IRQ_TYPE_LEVEL_HIGH)>,
> > +			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(2) |
> > +			      IRQ_TYPE_LEVEL_HIGH)>;
> > +	};
> > +
> > +	sysirq: interrupt-controller at 10200620 {
> > +		compatible = "mediatek,mt7622-sysirq",
> > +			     "mediatek,mt6577-sysirq";
> > +		interrupt-controller;
> > +		#interrupt-cells = <3>;
> > +		interrupt-parent = <&gic>;
> > +		reg = <0 0x10200620 0 0x20>;
> > +	};
> > +
> > +	gic: interrupt-controller at 10300000 {
> > +		compatible = "arm,gic-400";
> > +		interrupt-controller;
> > +		#interrupt-cells = <3>;
> > +		interrupt-parent = <&gic>;
> > +		reg = <0 0x10310000 0 0x1000>,
> > +		      <0 0x10320000 0 0x1000>,
> > +		      <0 0x10340000 0 0x2000>,
> > +		      <0 0x10360000 0 0x2000>;
> > +	};
> > +
> > +	uart0: serial at 11002000 {
> > +		compatible = "mediatek,mt7622-uart",
> > +			     "mediatek,mt6577-uart";
> > +		reg = <0 0x11002000 0 0x400>;
> > +		interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_LOW>;
> > +		clocks = <&uart_clk>;
> 
> mt6577-uart has two clocks. Please fix this.

Those two real clocks which UART requires will be updated once the
MT7622 clock driver and the relevant binding header are all ready.
So currently the UART is using dummy clock node instead.

Is it allowed? 

> I would appreciate if you could rebase on the mediatek for-next branch 
> (especially for 3/3), which will make it easier for me to take this.
> 

O.K. I will rebase on your tree

	Sean

> Regards,
> Matthias