[PATCH v2 0/7] arm: Add basic support for MediaTek MT8127 & MT8135 SoCs

[PATCH v2 0/7] arm: Add basic support for MediaTek MT8127 & MT8135 SoCs

[Joe.C]

This is v2 of adding basic device tree support MT8127 & MT8135.
This series is based on Matthias' pull request for mediatek support [1]
Comparing to v1, this version changes:
 - Change timer compatible string.
 - Build dtb for mt8127 & mt8135
 - Adding earlyprintk support for mt8127 & mt8135

We are planning to upstream drivers for MT8127 & MT8135 SoCs.
MT8135 is a tablet soc featuring 2 CA7 + 2 CA15. MT8127 is a
tablet soc with 4 CA7. They share many similar IP components
with MT65xx series.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-September/287506.html

Joe.C (7):
  arm: MTK: Add basic support for mt8127
  arm: mediatek: add dts for 8127 Moose board
  arm: MTK: Add basic support for mt8135
  arm: mediatek: add dts for MT8135 evaluation board.
  dt-bindings: add more chips in documentation for Mediatek SoC
  arm: dts: Build dtb for mt8127 & mt8135
  arm: mediatek: Add earlyprintk support for mt8127 & mt8135

 Documentation/devicetree/bindings/arm/mediatek.txt |   9 +-
 arch/arm/Kconfig.debug                             |  20 ++++
 arch/arm/boot/dts/Makefile                         |   4 +-
 arch/arm/boot/dts/mt8127-moose.dts                 |  24 +++++
 arch/arm/boot/dts/mt8127.dtsi                      |  93 +++++++++++++++++
 arch/arm/boot/dts/mt8135-evbp1.dts                 |  24 +++++
 arch/arm/boot/dts/mt8135.dtsi                      | 115 +++++++++++++++++++++
 arch/arm/mach-mediatek/mediatek.c                  |   2 +
 8 files changed, 287 insertions(+), 4 deletions(-)
 create mode 100644 arch/arm/boot/dts/mt8127-moose.dts
 create mode 100644 arch/arm/boot/dts/mt8127.dtsi
 create mode 100644 arch/arm/boot/dts/mt8135-evbp1.dts
 create mode 100644 arch/arm/boot/dts/mt8135.dtsi

-- 
1.8.1.1.dirty

[PATCH v2 1/7] arm: MTK: Add basic support for mt8127

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

This adds a basic dtsi for MT8127 SoC.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/mt8127.dtsi     | 93 +++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-mediatek/mediatek.c |  1 +
 2 files changed, 94 insertions(+)
 create mode 100644 arch/arm/boot/dts/mt8127.dtsi

diff --git a/arch/arm/boot/dts/mt8127.dtsi b/arch/arm/boot/dts/mt8127.dtsi
new file mode 100644
index 0000000..25c9f69
--- /dev/null
+++ b/arch/arm/boot/dts/mt8127.dtsi
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Joe.C <yingjoe.chen@mediatek.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 "skeleton64.dtsi"
+
+/ {
+	compatible = "mediatek,mt8127";
+	interrupt-parent = <&gic>;
+
+	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 = <2>;
+		#size-cells = <2>;
+		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>;
+		};
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		timer: timer@10008000 {
+			compatible = "mediatek,mt8127-timer", "mediatek,mt6577-timer";
+			reg = <0 0x10008000 0 0x80>;
+			interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>, <&rtc_clk>;
+			clock-names = "system-clk", "rtc-clk";
+		};
+
+		gic: interrupt-controller@10211000 {
+			compatible = "arm,cortex-a7-gic";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			reg = <0 0x10211000 0 0x1000>,
+			      <0 0x10212000 0 0x1000>,
+			      <0 0x10214000 0 0x2000>,
+			      <0 0x10216000 0 0x2000>;
+		};
+	};
+};
diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
index f2acf07..7f478ce 100644
--- a/arch/arm/mach-mediatek/mediatek.c
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -19,6 +19,7 @@
 
 static const char * const mediatek_board_dt_compat[] = {
 	"mediatek,mt6589",
+	"mediatek,mt8127",
 	NULL,
 };
 
-- 
1.8.1.1.dirty

[PATCH v2 2/7] arm: mediatek: add dts for 8127 Moose board

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Moose is a tablet evalutation board based on MT8127 SoC.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/mt8127-moose.dts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 arch/arm/boot/dts/mt8127-moose.dts

diff --git a/arch/arm/boot/dts/mt8127-moose.dts b/arch/arm/boot/dts/mt8127-moose.dts
new file mode 100644
index 0000000..715e23c
--- /dev/null
+++ b/arch/arm/boot/dts/mt8127-moose.dts
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Joe.C <yingjoe.chen@mediatek.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 "mt8127.dtsi"
+
+/ {
+	model = "mt8127-moose";
+
+	memory {
+		reg = <0 0x80000000 0 0x40000000>;
+	};
+};
-- 
1.8.1.1.dirty

[PATCH v2 3/7] arm: MTK: Add basic support for mt8135

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

This adds a basic dtsi for MT8135 based SoC.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/mt8135.dtsi     | 115 ++++++++++++++++++++++++++++++++++++++
 arch/arm/mach-mediatek/mediatek.c |   1 +
 2 files changed, 116 insertions(+)
 create mode 100644 arch/arm/boot/dts/mt8135.dtsi

diff --git a/arch/arm/boot/dts/mt8135.dtsi b/arch/arm/boot/dts/mt8135.dtsi
new file mode 100644
index 0000000..90a56ad
--- /dev/null
+++ b/arch/arm/boot/dts/mt8135.dtsi
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Joe.C <yingjoe.chen@mediatek.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 "skeleton64.dtsi"
+
+/ {
+	compatible = "mediatek,mt8135";
+	interrupt-parent = <&gic>;
+
+	cpu-map {
+		cluster0 {
+			core0 {
+				cpu = <&cpu0>;
+			};
+			core1 {
+				cpu = <&cpu1>;
+			};
+		};
+
+		cluster1 {
+			core0 {
+				cpu = <&cpu2>;
+			};
+			core1 {
+				cpu = <&cpu3>;
+			};
+		};
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x000>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0x001>;
+		};
+
+		cpu2: cpu@100 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a15";
+			reg = <0x100>;
+		};
+
+		cpu3: cpu@101 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a15";
+			reg = <0x101>;
+		};
+	};
+
+	clocks {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		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>;
+		};
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		timer: timer@10008000 {
+			compatible = "mediatek,mt8135-timer", "mediatek,mt6577-timer";
+			reg = <0 0x10008000 0 0x80>;
+			interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>, <&rtc_clk>;
+			clock-names = "system-clk", "rtc-clk";
+		};
+
+		gic: interrupt-controller@10211000 {
+			compatible = "arm,cortex-a15-gic";
+			interrupt-controller;
+			#interrupt-cells = <3>;
+			reg = <0 0x10211000 0 0x1000>,
+			      <0 0x10212000 0 0x1000>,
+			      <0 0x10214000 0 0x2000>,
+			      <0 0x10216000 0 0x2000>;
+		};
+	};
+};
diff --git a/arch/arm/mach-mediatek/mediatek.c b/arch/arm/mach-mediatek/mediatek.c
index 7f478ce..48051a2 100644
--- a/arch/arm/mach-mediatek/mediatek.c
+++ b/arch/arm/mach-mediatek/mediatek.c
@@ -20,6 +20,7 @@
 static const char * const mediatek_board_dt_compat[] = {
 	"mediatek,mt6589",
 	"mediatek,mt8127",
+	"mediatek,mt8135",
 	NULL,
 };
 
-- 
1.8.1.1.dirty

[PATCH v2 4/7] arm: mediatek: add dts for MT8135 evaluation board.

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Evbp1 is a tablet evaluation board based on MT8135 SoC.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/mt8135-evbp1.dts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 arch/arm/boot/dts/mt8135-evbp1.dts

diff --git a/arch/arm/boot/dts/mt8135-evbp1.dts b/arch/arm/boot/dts/mt8135-evbp1.dts
new file mode 100644
index 0000000..d7c5ef0
--- /dev/null
+++ b/arch/arm/boot/dts/mt8135-evbp1.dts
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2014 MediaTek Inc.
+ * Author: Joe.C <yingjoe.chen@mediatek.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 "mt8135.dtsi"
+
+/ {
+	model = "mt8135-evbp1";
+
+	memory {
+		reg = <0 0x80000000 0 0x40000000>;
+	};
+};
-- 
1.8.1.1.dirty

[PATCH v2 5/7] dt-bindings: add more chips in documentation for Mediatek SoC

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Add MT8127 & MT8135 from Mediatek.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 Documentation/devicetree/bindings/arm/mediatek.txt | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/mediatek.txt b/Documentation/devicetree/bindings/arm/mediatek.txt
index fa25226..40a9745 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.txt
+++ b/Documentation/devicetree/bindings/arm/mediatek.txt
@@ -1,10 +1,13 @@
-Mediatek MT6589 Platforms Device Tree Bindings
+Mediatek Platforms Device Tree Bindings
 
-Boards with a SoC of the Mediatek MT6589 shall have the following property:
+Boards with a SoC of the Mediatek shall have the following property:
 
 Required root node property:
 
-compatible: must contain "mediatek,mt6589"
+compatible: Must contain one of
+   "mediatek,mt6589"
+   "mediatek,mt8127"
+   "mediatek,mt8135"
 
 
 Supported boards:
-- 
1.8.1.1.dirty

[PATCH v2 6/7] arm: dts: Build dtb for mt8127 & mt8135

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

This allows the "make dtbs" to build the moose and mt8135-evbp1
for MediaTek SoC

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/boot/dts/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 055b20c..1e7380d 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -491,7 +491,9 @@ dtb-$(CONFIG_MACH_DOVE) += dove-cm-a510.dtb \
 	dove-d2plug.dtb \
 	dove-d3plug.dtb \
 	dove-dove-db.dtb
-dtb-$(CONFIG_ARCH_MEDIATEK) += mt6589-aquaris5.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt6589-aquaris5.dtb \
+	mt8127-moose.dtb \
+	mt8135-evbp1.dtb
 
 targets += dtbs dtbs_install
 targets += $(dtb-y)
-- 
1.8.1.1.dirty

[PATCH v2 7/7] arm: mediatek: Add earlyprintk support for mt8127 & mt8135

[Joe.C]

From: "Joe.C" <yingjoe.chen@mediatek.com>

Enable low-level debug for Mediatek mt8127 & mt8135 SoC.

Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
---
 arch/arm/Kconfig.debug | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index cfdd1c0..3888d17 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -842,6 +842,22 @@ choice
 		  Say Y here if you want kernel low-level debugging support
 		  for Mediatek mt6589 based platforms on UART0.
 
+	config DEBUG_MT8127_UART0
+		bool "Mediatek mt8127 UART0"
+		depends on ARCH_MEDIATEK
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  for Mediatek mt8127 based platforms on UART0.
+
+	config DEBUG_MT8135_UART3
+		bool "Mediatek mt8135 UART3"
+		depends on ARCH_MEDIATEK
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  for Mediatek mt8135 based platforms on UART3.
+
 	config DEBUG_VEXPRESS_UART0_DETECT
 		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
 		depends on ARCH_VEXPRESS && CPU_CP15_MMU
@@ -1084,6 +1100,8 @@ config DEBUG_UART_PHYS
 	default 0x101f1000 if ARCH_VERSATILE
 	default 0x101fb000 if DEBUG_NOMADIK_UART
 	default 0x11006000 if DEBUG_MT6589_UART0
+	default 0x11002000 if DEBUG_MT8127_UART0
+	default 0x11009000 if DEBUG_MT8135_UART3
 	default 0x16000000 if ARCH_INTEGRATOR
 	default 0x18000300 if DEBUG_BCM_5301X
 	default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
@@ -1147,6 +1165,8 @@ config DEBUG_UART_VIRT
 	default 0xf0201000 if DEBUG_BCM2835
 	default 0xf1000300 if DEBUG_BCM_5301X
 	default 0xf1006000 if DEBUG_MT6589_UART0
+	default 0xf1002000 if DEBUG_MT8127_UART0
+	default 0xf1009000 if DEBUG_MT8135_UART3
 	default 0xf11f1000 if ARCH_VERSATILE
 	default 0xf1600000 if ARCH_INTEGRATOR
 	default 0xf1c28000 if DEBUG_SUNXI_UART0
-- 
1.8.1.1.dirty

Re: [PATCH v2 7/7] arm: mediatek: Add earlyprintk support for mt8127 & mt8135

[Matthias Brugger]

On 17/09/14 16:24, Joe.C wrote:
> From: "Joe.C" <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> 
> Enable low-level debug for Mediatek mt8127 & mt8135 SoC.
> 
> Signed-off-by: Joe.C <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> ---
>  arch/arm/Kconfig.debug | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index cfdd1c0..3888d17 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -842,6 +842,22 @@ choice
>  		  Say Y here if you want kernel low-level debugging support
>  		  for Mediatek mt6589 based platforms on UART0.
>  
> +	config DEBUG_MT8127_UART0
> +		bool "Mediatek mt8127 UART0"
> +		depends on ARCH_MEDIATEK
> +		select DEBUG_UART_8250
> +		help
> +		  Say Y here if you want kernel low-level debugging support
> +		  for Mediatek mt8127 based platforms on UART0.
> +
> +	config DEBUG_MT8135_UART3
> +		bool "Mediatek mt8135 UART3"
> +		depends on ARCH_MEDIATEK
> +		select DEBUG_UART_8250
> +		help
> +		  Say Y here if you want kernel low-level debugging support
> +		  for Mediatek mt8135 based platforms on UART3.
> +
>  	config DEBUG_VEXPRESS_UART0_DETECT
>  		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
>  		depends on ARCH_VEXPRESS && CPU_CP15_MMU
> @@ -1084,6 +1100,8 @@ config DEBUG_UART_PHYS
>  	default 0x101f1000 if ARCH_VERSATILE
>  	default 0x101fb000 if DEBUG_NOMADIK_UART
>  	default 0x11006000 if DEBUG_MT6589_UART0
> +	default 0x11002000 if DEBUG_MT8127_UART0
> +	default 0x11009000 if DEBUG_MT8135_UART3

These lines are ordered by the address.

>  	default 0x16000000 if ARCH_INTEGRATOR
>  	default 0x18000300 if DEBUG_BCM_5301X
>  	default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
> @@ -1147,6 +1165,8 @@ config DEBUG_UART_VIRT
>  	default 0xf0201000 if DEBUG_BCM2835
>  	default 0xf1000300 if DEBUG_BCM_5301X
>  	default 0xf1006000 if DEBUG_MT6589_UART0
> +	default 0xf1002000 if DEBUG_MT8127_UART0
> +	default 0xf1009000 if DEBUG_MT8135_UART3

Same here.
Apart from that the patches look fine to me.

Cheers,
Matthias

>  	default 0xf11f1000 if ARCH_VERSATILE
>  	default 0xf1600000 if ARCH_INTEGRATOR
>  	default 0xf1c28000 if DEBUG_SUNXI_UART0
> 
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Re: [PATCH v2 5/7] dt-bindings: add more chips in documentation for Mediatek SoC

[Matthias Brugger]

Sorry I just saw some more issues:

On 17/09/14 16:24, Joe.C wrote:
> From: "Joe.C" <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> 
> Add MT8127 & MT8135 from Mediatek.
> 
> Signed-off-by: Joe.C <yingjoe.chen-NuS5LvNUpcJWk0Htik3J/w@public.gmane.org>
> ---
>  Documentation/devicetree/bindings/arm/mediatek.txt | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/mediatek.txt b/Documentation/devicetree/bindings/arm/mediatek.txt
> index fa25226..40a9745 100644
> --- a/Documentation/devicetree/bindings/arm/mediatek.txt
> +++ b/Documentation/devicetree/bindings/arm/mediatek.txt
> @@ -1,10 +1,13 @@
> -Mediatek MT6589 Platforms Device Tree Bindings
> +Mediatek Platforms Device Tree Bindings
>  
> -Boards with a SoC of the Mediatek MT6589 shall have the following property:
> +Boards with a SoC of the Mediatek shall have the following property:
>  
>  Required root node property:
>  
> -compatible: must contain "mediatek,mt6589"
> +compatible: Must contain one of
> +   "mediatek,mt6589"
> +   "mediatek,mt8127"
> +   "mediatek,mt8135"
>  
>  
>  Supported boards:

Please document the supported boards and add a compatible string in the
dts files for moose and evbp1 boards.

Thanks,
Matthias

> 
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