The Khadas VIM4 uses the Amlogic A311D2 SoC, based on the Amlogic
Meson T7 family. This chip is not the same as A311D used in Vim3
board.
Work based on Khadas 5.4 branch:
https://github.com/khadas/linux/tree/khadas-vims-5.4.y
The current status is Vim4 board booting to emergency shell via uart.
Board Features:
- 8GB LPDDR4X 2016MHz
- 32GB eMMC 5.1 storage
- 32MB SPI flash
- 10/100/1000 Base-T Ethernet
- AP6275S Wireless (802.11 a/b/g/n/ac/ax, BT5.1)
- HDMI 2.1 video
- HDMI Input
- 1x USB 2.0 + 1x USB 3.0 ports
- 1x USB-C (power) with USB 2.0 OTG
- 3x LED's (1x red, 1x blue, 1x white)
- 3x buttons (power, function, reset)
- M2 socket with PCIe, USB, ADC & I2C
- 40pin GPIO Header
- 1x micro SD card slot
Changes Since v2:
- Add "amlogic,meson-t7-uart" documentation
Changes Since v1:
- Drop the T7 clock driver as it is not needed for serial boot. It will
later use the S4 clock
driver as S4 and T7 seems to be similar chips.
- Use "arm,gic-400" for interrupt controller to fix dtb_check
- Remove CPU node properties not needed for serial boot
- Move UART node to apb4 node
- Drop T7 UART compatible line and use S4 uart
- Use psci V1 instead of 0.2, it works, but I can't verify is correct
as the datasheet I have
doesn't contain that information.
- Remove compatible from meson-t7.dtsi, move it to vim4 board dts
- Add memory node with 8GB. Not sure about this one, works without,
but doesn't detect 8GB
- Use defines for GIC_CPU_MASK_SIMPLE, IRQ_TYPE_LEVEL_LOW,
IRQ_TYPE_LEVEL_HIGH instead of hardcoded values
Lucas Tanure (3):
dt-bindings: arm: amlogic: add Amlogic A311D2 bindings
dt-bindings: serial: amlogic,meson-uart: Add compatible string for T7
arm64: dts: meson-t7-a311d2-khadas-vim4: add initial device-tree
.../devicetree/bindings/arm/amlogic.yaml | 7 +
.../bindings/serial/amlogic,meson-uart.yaml | 2 +
arch/arm64/boot/dts/amlogic/Makefile | 1 +
.../amlogic/meson-t7-a311d2-khadas-vim4.dts | 52 ++++++
arch/arm64/boot/dts/amlogic/meson-t7.dtsi | 158 ++++++++++++++++++
5 files changed, 220 insertions(+)
create mode 100644 arch/arm64/boot/dts/amlogic/meson-t7-a311d2-khadas-vim4.dts
create mode 100644 arch/arm64/boot/dts/amlogic/meson-t7.dtsi
--
2.41.0
The Khadas VIM4 uses the Amlogic A311D2 SoC, based on the Amlogic T7 SoC
family, on a board with the same form factor as the VIM3 models.
- 8GB LPDDR4X 2016MHz
- 32GB eMMC 5.1 storage
- 32MB SPI flash
- 10/100/1000 Base-T Ethernet
- AP6275S Wireless (802.11 a/b/g/n/ac/ax, BT5.1)
- HDMI 2.1 video
- HDMI Input
- 1x USB 2.0 + 1x USB 3.0 ports
- 1x USB-C (power) with USB 2.0 OTG
- 3x LED's (1x red, 1x blue, 1x white)
- 3x buttons (power, function, reset)
- M2 socket with PCIe, USB, ADC & I2C
- 40pin GPIO Header
- 1x micro SD card slot
Signed-off-by: Lucas Tanure <[email protected]>
---
arch/arm64/boot/dts/amlogic/Makefile | 1 +
.../amlogic/meson-t7-a311d2-khadas-vim4.dts | 52 ++++++
arch/arm64/boot/dts/amlogic/meson-t7.dtsi | 158 ++++++++++++++++++
3 files changed, 211 insertions(+)
create mode 100644 arch/arm64/boot/dts/amlogic/meson-t7-a311d2-khadas-vim4.dts
create mode 100644 arch/arm64/boot/dts/amlogic/meson-t7.dtsi
diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index cd1c5b04890a..1c5846bd1ca0 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -74,3 +74,4 @@ dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-hc4.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-sm1-sei610.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air-gbit.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-sm1-x96-air.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-t7-a311d2-khadas-vim4.dtb
diff --git a/arch/arm64/boot/dts/amlogic/meson-t7-a311d2-khadas-vim4.dts b/arch/arm64/boot/dts/amlogic/meson-t7-a311d2-khadas-vim4.dts
new file mode 100644
index 000000000000..04cc8b0dfd8c
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-t7-a311d2-khadas-vim4.dts
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2022 Wesion, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "meson-t7.dtsi"
+
+/ {
+ model = "Khadas vim4";
+ compatible = "khadas,vim4", "amlogic,a311d2", "amlogic,t7";
+
+ aliases {
+ serial0 = &uart_A;
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x0 0x0 0x2 0x0>; /* 8 GB */
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ /* 3 MiB reserved for ARM Trusted Firmware (BL31) */
+ secmon_reserved: secmon@5000000 {
+ reg = <0x0 0x05000000 0x0 0x300000>;
+ no-map;
+ };
+
+ /* 32 MiB reserved for ARM Trusted Firmware (BL32) */
+ secmon_reserved_bl32: secmon@5300000 {
+ reg = <0x0 0x05300000 0x0 0x2000000>;
+ no-map;
+ };
+ };
+
+ xtal: xtal-clk {
+ compatible = "fixed-clock";
+ clock-frequency = <24000000>;
+ clock-output-names = "xtal";
+ #clock-cells = <0>;
+ };
+
+};
+
+&uart_A {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/amlogic/meson-t7.dtsi b/arch/arm64/boot/dts/amlogic/meson-t7.dtsi
new file mode 100644
index 000000000000..9b8c33708ecd
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-t7.dtsi
@@ -0,0 +1,158 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpus {
+ #address-cells = <0x2>;
+ #size-cells = <0x0>;
+
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&cpu100>;
+ };
+ core1 {
+ cpu = <&cpu101>;
+ };
+ core2 {
+ cpu = <&cpu102>;
+ };
+ core3 {
+ cpu = <&cpu103>;
+ };
+ };
+
+ cluster1 {
+ core0 {
+ cpu = <&cpu0>;
+ };
+ core1 {
+ cpu = <&cpu1>;
+ };
+ core2 {
+ cpu = <&cpu2>;
+ };
+ core3 {
+ cpu = <&cpu3>;
+ };
+ };
+ };
+
+ cpu100: cpu@100 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x0 0x100>;
+ enable-method = "psci";
+ };
+
+ cpu101: cpu@101{
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x0 0x101>;
+ enable-method = "psci";
+ };
+
+ cpu102: cpu@102 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x0 0x102>;
+ enable-method = "psci";
+ };
+
+ cpu103: cpu@103 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a53";
+ reg = <0x0 0x103>;
+ enable-method = "psci";
+ };
+
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a73";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ };
+
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a73";
+ reg = <0x0 0x1>;
+ enable-method = "psci";
+ };
+
+ cpu2: cpu@2 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a73";
+ reg = <0x0 0x2>;
+ enable-method = "psci";
+ };
+
+ cpu3: cpu@3 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a73";
+ reg = <0x0 0x3>;
+ enable-method = "psci";
+ };
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+ };
+
+ psci {
+ compatible = "arm,psci-1.0";
+ method = "smc";
+ };
+
+ sm: secure-monitor {
+ compatible = "amlogic,meson-gxbb-sm";
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ gic: interrupt-controller@fff01000 {
+ compatible = "arm,gic-400";
+ #interrupt-cells = <3>;
+ #address-cells = <0>;
+ interrupt-controller;
+ reg = <0x0 0xfff01000 0 0x1000>,
+ <0x0 0xfff02000 0 0x0100>;
+ interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+ };
+
+ apb4: bus@fe000000 {
+ compatible = "simple-bus";
+ reg = <0x0 0xfe000000 0x0 0x480000>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
+
+ uart_A: serial@78000 {
+ compatible = "amlogic,meson-t7-uart",
+ "amlogic,meson-s4-uart";
+ reg = <0x0 0x78000 0x0 0x18>;
+ interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>;
+ status = "disabled";
+ clocks = <&xtal>, <&xtal>, <&xtal>;
+ clock-names = "xtal", "pclk", "baud";
+ };
+ };
+
+ };
+};
--
2.41.0
Add bindings for the Khadas Vim4 board, using A311D2 soc, a Meson T7
family chip.
Signed-off-by: Lucas Tanure <[email protected]>
Acked-by: Conor Dooley <[email protected]>
---
Documentation/devicetree/bindings/arm/amlogic.yaml | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/amlogic.yaml b/Documentation/devicetree/bindings/arm/amlogic.yaml
index 274ee0890312..8dbd65170c50 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.yaml
+++ b/Documentation/devicetree/bindings/arm/amlogic.yaml
@@ -211,6 +211,13 @@ properties:
- amlogic,aq222
- const: amlogic,s4
+ - description: Boards with the Amlogic Meson t7 A311D2 SoC
+ items:
+ - enum:
+ - khadas,vim4
+ - const: amlogic,a311d2
+ - const: amlogic,t7
+
additionalProperties: true
...
--
2.41.0