[PATCH v6 0/3] Add basic SoC support for mediatek mt7986

STALE1745d

Revision v6 of 4 in this series.

7 messages, 2 authors, 2021-10-22 · open the first message on its own page

[PATCH v6 0/3] Add basic SoC support for mediatek mt7986

From: Sam Shih <hidden>
Date: 2021-10-14 07:50:45 

This patch adds basic SoC support for Mediatek's new 4-core SoC,
MT7986, which is mainly for wifi-router application.

---
v6: separate basic part into a single patch series

According to the maintainer’s suggestion, this patch splits the previous
thread into independent patch series.
This patch include basic device support.

Original thread:
https://lore.kernel.org/all/20210914085137.31761-1-sam.shih@mediatek.com/
---

Sam Shih (3):
  dt-bindings: arm64: dts: mediatek: Add mt7986 series
  arm64: dts: mediatek: add basic mt7986a support
  arm64: dts: mediatek: add basic mt7986b support

 .../devicetree/bindings/arm/mediatek.yaml     |   8 +
 arch/arm64/boot/dts/mediatek/Makefile         |   2 +
 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts  |  34 ++++
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi     | 149 ++++++++++++++++++
 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts  |  26 +++
 arch/arm64/boot/dts/mediatek/mt7986b.dtsi     | 149 ++++++++++++++++++
 6 files changed, 368 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a.dtsi
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi

--
2.29.2


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[PATCH v6 1/3] dt-bindings: arm64: dts: mediatek: Add mt7986 series

From: Sam Shih <hidden>
Date: 2021-10-14 07:49:44 

MT7986 series is Mediatek's new 4-core SoC, which is mainly
for wifi-router application. The difference between mt7986a and mt7986b
is that some pins do not exist on mt7986b.

Signed-off-by: Sam Shih <redacted>
Acked-by: Rob Herring <robh@kernel.org>

---
v6: separate basic part into a single patch series

Original thread:
https://lore.kernel.org/all/315d7823aa108c909a3d36464fe54763b76ab2f4.camel@mediatek.com/

v3: changed 'MT7986' to 'MT7986 series' in the commit message
v2: added an Acked-by tag
---
 Documentation/devicetree/bindings/arm/mediatek.yaml | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
index 80a05f6fee85..a9a778269684 100644
--- a/Documentation/devicetree/bindings/arm/mediatek.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
@@ -76,6 +76,14 @@ properties:
           - enum:
               - mediatek,mt7629-rfb
           - const: mediatek,mt7629
+      - items:
+          - enum:
+              - mediatek,mt7986a-rfb
+          - const: mediatek,mt7986a
+      - items:
+          - enum:
+              - mediatek,mt7986b-rfb
+          - const: mediatek,mt7986b
       - items:
           - enum:
               - mediatek,mt8127-moose
-- 
2.29.2


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[PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support

From: Sam Shih <hidden>
Date: 2021-10-14 07:50:49 

Add basic chip support for Mediatek mt7986b, include
basic uart nodes, rng node and watchdog node.

Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.

Signed-off-by: Sam Shih <redacted>

---
v6: separate basic part into a single patch series
v5: follow reviewr's comment: removed clock freqency node in timer due to
    we have set CNTFRQ_EL0 in ATF firmware, and also corrected GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
 arch/arm64/boot/dts/mediatek/Makefile        |   1 +
 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts |  26 ++++
 arch/arm64/boot/dts/mediatek/mt7986b.dtsi    | 149 +++++++++++++++++++
 3 files changed, 176 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index e6c3a73b9e4a..d555e43d1ccc 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
new file mode 100644
index 000000000000..95a202505bb2
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7986b.dtsi"
+
+/ {
+	model = "MediaTek MT7986b RFB";
+	compatible = "mediatek,mt7986b-rfb";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b.dtsi b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
new file mode 100644
index 000000000000..2b8e0a382398
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986b";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	system_clk: dummy40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x0>;
+			#cooling-cells = <2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x1>;
+			#cooling-cells = <2>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x2>;
+			#cooling-cells = <2>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			enable-method = "psci";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			#cooling-cells = <2>;
+		};
+	};
+
+	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@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
+	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>;
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x10000>,  /* GICD */
+			      <0 0x0c080000 0 0x80000>,  /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt",
+				     "mediatek,mt6589-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+			status = "disabled";
+		};
+
+		trng: trng@1020f000 {
+			compatible = "mediatek,mt7986-rng",
+				     "mediatek,mt7623-rng";
+			reg = <0 0x1020f000 0 0x100>;
+			clocks = <&system_clk>;
+			clock-names = "rng";
+			status = "disabled";
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x400>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart1: serial@11003000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11003000 0 0x400>;
+			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart2: serial@11004000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11004000 0 0x400>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+	};
+
+};
-- 
2.29.2


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Re: [PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support

From: Matthias Brugger <matthias.bgg@gmail.com>
Date: 2021-10-14 15:32:40 


On 14/10/2021 09:44, Sam Shih wrote:
quoted hunk
Add basic chip support for Mediatek mt7986b, include
basic uart nodes, rng node and watchdog node.

Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.

Signed-off-by: Sam Shih <redacted>

---
v6: separate basic part into a single patch series
v5: follow reviewr's comment: removed clock freqency node in timer due to
     we have set CNTFRQ_EL0 in ATF firmware, and also corrected GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
  arch/arm64/boot/dts/mediatek/Makefile        |   1 +
  arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts |  26 ++++
  arch/arm64/boot/dts/mediatek/mt7986b.dtsi    | 149 +++++++++++++++++++
  3 files changed, 176 insertions(+)
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index e6c3a73b9e4a..d555e43d1ccc 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
new file mode 100644
index 000000000000..95a202505bb2
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7986b.dtsi"
+
+/ {
+	model = "MediaTek MT7986b RFB";
+	compatible = "mediatek,mt7986b-rfb";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
We are missing a memory node here. I wonder how the board was able to boot 
without memory. Did you test this series?

Regards,
Matthias
quoted hunk
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b.dtsi b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
new file mode 100644
index 000000000000..2b8e0a382398
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986b";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	system_clk: dummy40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x0>;
+			#cooling-cells = <2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x1>;
+			#cooling-cells = <2>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x2>;
+			#cooling-cells = <2>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			enable-method = "psci";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			#cooling-cells = <2>;
+		};
+	};
+
+	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@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
+	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>;
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x10000>,  /* GICD */
+			      <0 0x0c080000 0 0x80000>,  /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt",
+				     "mediatek,mt6589-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+			status = "disabled";
+		};
+
+		trng: trng@1020f000 {
+			compatible = "mediatek,mt7986-rng",
+				     "mediatek,mt7623-rng";
+			reg = <0 0x1020f000 0 0x100>;
+			clocks = <&system_clk>;
+			clock-names = "rng";
+			status = "disabled";
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x400>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart1: serial@11003000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11003000 0 0x400>;
+			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart2: serial@11004000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11004000 0 0x400>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+	};
+
+};
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Re: [PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support

From: Sam Shih <hidden>
Date: 2021-10-15 01:50:41 

Hi 

On Thu, 2021-10-14 at 17:32 +0200, Matthias Brugger wrote:
On 14/10/2021 09:44, Sam Shih wrote:
quoted
Add basic chip support for Mediatek mt7986b, include
basic uart nodes, rng node and watchdog node.

Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.

Signed-off-by: Sam Shih <redacted>

---
v6: separate basic part into a single patch series
v5: follow reviewr's comment: removed clock freqency node in timer
due to
     we have set CNTFRQ_EL0 in ATF firmware, and also corrected
GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
  arch/arm64/boot/dts/mediatek/Makefile        |   1 +
  arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts |  26 ++++
  arch/arm64/boot/dts/mediatek/mt7986b.dtsi    | 149
+++++++++++++++++++
  3 files changed, 176 insertions(+)
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile
b/arch/arm64/boot/dts/mediatek/Makefile
index e6c3a73b9e4a..d555e43d1ccc 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
new file mode 100644
index 000000000000..95a202505bb2
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7986b.dtsi"
+
+/ {
+	model = "MediaTek MT7986b RFB";
+	compatible = "mediatek,mt7986b-rfb";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000
swiotlb=512";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
We are missing a memory node here. I wonder how the board was able to
boot 
without memory. Did you test this series?
Yes, I have tested this patch series in my local environment,

Our u-boot seems to pass the memory configuration to the kernel
according to its memory detection mechanism, so it was able to boot.

But for the kernel upstream, do you think it is better to
add the memory node back to the kernel dts?

If yes, I will send the next patch to add the mermory node back to the
kernel dts.


Regards,
Matthias
quoted
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
new file mode 100644
index 000000000000..2b8e0a382398
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986b";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	system_clk: dummy40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x0>;
+			#cooling-cells = <2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x1>;
+			#cooling-cells = <2>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x2>;
+			#cooling-cells = <2>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			enable-method = "psci";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			#cooling-cells = <2>;
+		};
+	};
+
+	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@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
+	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>;
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x10000>,  /* GICD */
+			      <0 0x0c080000 0 0x80000>,  /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt",
+				     "mediatek,mt6589-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+			status = "disabled";
+		};
+
+		trng: trng@1020f000 {
+			compatible = "mediatek,mt7986-rng",
+				     "mediatek,mt7623-rng";
+			reg = <0 0x1020f000 0 0x100>;
+			clocks = <&system_clk>;
+			clock-names = "rng";
+			status = "disabled";
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x400>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart1: serial@11003000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11003000 0 0x400>;
+			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart2: serial@11004000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11004000 0 0x400>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+	};
+
+};
Thanks,
Sam


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Re: [PATCH v6 3/3] arm64: dts: mediatek: add basic mt7986b support

From: Sam Shih <hidden>
Date: 2021-10-22 06:00:40 

Hi Matthias, Rob and Maintainers,

For memory nodes in DT,
I have replied in this thread:

https://lore.kernel.org/lkml/632e8d11-269c-d329-abf4-5d462aac4df4@gmail.com/t/#ma52ca22a3c6dc109eea034bc94f4f22e13f105ff

I have added memory node back to the DT.
This is V7 for the patchset:

https://lore.kernel.org/all/20211018114009.13350-1-sam.shih@mediatek.com/

Just Gentle ping for this patch.
Thanks

Best Regards,
Sam


On Thu, 2021-10-14 at 17:32 +0200, Matthias Brugger wrote:
On 14/10/2021 09:44, Sam Shih wrote:
quoted
Add basic chip support for Mediatek mt7986b, include
basic uart nodes, rng node and watchdog node.

Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.

Signed-off-by: Sam Shih <redacted>

---
v6: separate basic part into a single patch series
v5: follow reviewr's comment: removed clock freqency node in timer
due to
     we have set CNTFRQ_EL0 in ATF firmware, and also corrected
GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
  arch/arm64/boot/dts/mediatek/Makefile        |   1 +
  arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts |  26 ++++
  arch/arm64/boot/dts/mediatek/mt7986b.dtsi    | 149
+++++++++++++++++++
  3 files changed, 176 insertions(+)
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
  create mode 100644 arch/arm64/boot/dts/mediatek/mt7986b.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile
b/arch/arm64/boot/dts/mediatek/Makefile
index e6c3a73b9e4a..d555e43d1ccc 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986b-rfb.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
  dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
new file mode 100644
index 000000000000..95a202505bb2
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b-rfb.dts
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7986b.dtsi"
+
+/ {
+	model = "MediaTek MT7986b RFB";
+	compatible = "mediatek,mt7986b-rfb";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000
swiotlb=512";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
We are missing a memory node here. I wonder how the board was able to
boot 
without memory. Did you test this series?

Regards,
Matthias
quoted
diff --git a/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
new file mode 100644
index 000000000000..2b8e0a382398
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986b";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	system_clk: dummy40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x0>;
+			#cooling-cells = <2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x1>;
+			#cooling-cells = <2>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x2>;
+			#cooling-cells = <2>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			enable-method = "psci";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			#cooling-cells = <2>;
+		};
+	};
+
+	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@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
+	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>;
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x10000>,  /* GICD */
+			      <0 0x0c080000 0 0x80000>,  /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt",
+				     "mediatek,mt6589-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+			status = "disabled";
+		};
+
+		trng: trng@1020f000 {
+			compatible = "mediatek,mt7986-rng",
+				     "mediatek,mt7623-rng";
+			reg = <0 0x1020f000 0 0x100>;
+			clocks = <&system_clk>;
+			clock-names = "rng";
+			status = "disabled";
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x400>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart1: serial@11003000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11003000 0 0x400>;
+			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart2: serial@11004000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11004000 0 0x400>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+	};
+
+};

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[PATCH v6 2/3] arm64: dts: mediatek: add basic mt7986a support

From: Sam Shih <hidden>
Date: 2021-10-14 07:51:03 

Add basic chip support for Mediatek mt7986a, include
basic uart nodes, rng node and watchdog node.

Add cpu node, timer node, gic node, psci and reserved-memory node
for ARM Trusted Firmware.

Signed-off-by: Sam Shih <redacted>

---
v6: removed clock and pinctrl node, to separate basic part into a single
    patch series

Original thread:
https://lore.kernel.org/all/20211004124155.1404-1-sam.shih@mediatek.com/

v5: follow reviewr's comment: removed clock freqency node in timer due to
    we have set CNTFRQ_EL0 in ATF firmware, and also corrected GICD range
v4: added missing gic register bases, and fixed range of GICR
v3: used the stdout-path instead of console=ttyS0
v2: modified clock and uart node due to clock driver updated
---
 arch/arm64/boot/dts/mediatek/Makefile        |   1 +
 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts |  34 +++++
 arch/arm64/boot/dts/mediatek/mt7986a.dtsi    | 149 +++++++++++++++++++
 3 files changed, 184 insertions(+)
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
 create mode 100644 arch/arm64/boot/dts/mediatek/mt7986a.dtsi

diff --git a/arch/arm64/boot/dts/mediatek/Makefile b/arch/arm64/boot/dts/mediatek/Makefile
index 4f68ebed2e31..e6c3a73b9e4a 100644
--- a/arch/arm64/boot/dts/mediatek/Makefile
+++ b/arch/arm64/boot/dts/mediatek/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-evb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt6797-x20-dev.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-rfb1.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt7622-bananapi-bpi-r64.dtb
+dtb-$(CONFIG_ARCH_MEDIATEK) += mt7986a-rfb.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8167-pumpkin.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm.dtb
 dtb-$(CONFIG_ARCH_MEDIATEK) += mt8173-elm-hana.dtb
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
new file mode 100644
index 000000000000..5348fc427463
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-rfb.dts
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+/dts-v1/;
+#include "mt7986a.dtsi"
+
+/ {
+	model = "MediaTek MT7986a RFB";
+	compatible = "mediatek,mt7986a-rfb";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512";
+	};
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&uart1 {
+	status = "okay";
+};
+
+&uart2 {
+	status = "okay";
+};
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
new file mode 100644
index 000000000000..75912bcf6c9c
--- /dev/null
+++ b/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2021 MediaTek Inc.
+ * Author: Sam.Shih <sam.shih@mediatek.com>
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt7986a";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	system_clk: dummy40m {
+		compatible = "fixed-clock";
+		clock-frequency = <40000000>;
+		#clock-cells = <0>;
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x0>;
+			#cooling-cells = <2>;
+		};
+
+		cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x1>;
+			#cooling-cells = <2>;
+		};
+
+		cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			enable-method = "psci";
+			reg = <0x2>;
+			#cooling-cells = <2>;
+		};
+
+		cpu3: cpu@3 {
+			device_type = "cpu";
+			enable-method = "psci";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			#cooling-cells = <2>;
+		};
+	};
+
+	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@43000000 {
+			reg = <0 0x43000000 0 0x30000>;
+			no-map;
+		};
+	};
+
+	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>;
+	};
+
+	soc {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		compatible = "simple-bus";
+		ranges;
+
+		gic: interrupt-controller@c000000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			interrupt-parent = <&gic>;
+			interrupt-controller;
+			reg = <0 0x0c000000 0 0x10000>,  /* GICD */
+			      <0 0x0c080000 0 0x80000>,  /* GICR */
+			      <0 0x0c400000 0 0x2000>,   /* GICC */
+			      <0 0x0c410000 0 0x1000>,   /* GICH */
+			      <0 0x0c420000 0 0x2000>;   /* GICV */
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		watchdog: watchdog@1001c000 {
+			compatible = "mediatek,mt7986-wdt",
+				     "mediatek,mt6589-wdt";
+			reg = <0 0x1001c000 0 0x1000>;
+			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
+			#reset-cells = <1>;
+			status = "disabled";
+		};
+
+		trng: trng@1020f000 {
+			compatible = "mediatek,mt7986-rng",
+				     "mediatek,mt7623-rng";
+			reg = <0 0x1020f000 0 0x100>;
+			clocks = <&system_clk>;
+			clock-names = "rng";
+			status = "disabled";
+		};
+
+		uart0: serial@11002000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11002000 0 0x400>;
+			interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart1: serial@11003000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11003000 0 0x400>;
+			interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+		uart2: serial@11004000 {
+			compatible = "mediatek,mt7986-uart",
+				     "mediatek,mt6577-uart";
+			reg = <0 0x11004000 0 0x400>;
+			interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&system_clk>;
+			status = "disabled";
+		};
+
+	};
+
+};
-- 
2.29.2


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