Re: [PATCH v7 0/4] Add Amlogic A311D2 and Khadas Vim4 Board Support

Neil Armstrong
2023-07-03T09:46:28Z

Hi Lucas,

On 29/06/2023 09:34, Lucas Tanure wrote:
> The Khadas VIM4 uses the Amlogic A311D2 SoC, based on the Amlogic 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

I've applied patches 1 & 4, now you can send the serie with only uart changes,
it will simplify Greg's life.

Thanks,
Neil

>
> Changes Since v6:
> - Move Uart clock to amlogic-t7-a311d2-khadas-vim4 dts
> - Fix GIC_CPU_MASK_SIMPLE
> - Lowercase uart label
>
> Changes Since v5:
> - Remove meson as T7 its not a meson chip
> - Change Uart Document descript to S4 compatibles
>
> Changes Since v4:
> - Use S4 instead of G12a for uart fallback
> - Add OF_EARLYCON_DECLARE for T7 uart
>
> Changes Since v3:
> - Fix issues with "amlogic,meson-t7-uart" documentation
>
> 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 (4):
> dt-bindings: arm: amlogic: add Amlogic A311D2 bindings
> dt-bindings: serial: amlogic,meson-uart: Add compatible string for T7
> tty: serial: meson: Add a earlycon for the T7 SoC
> arm64: dts: amlogic-t7-a311d2-khadas-vim4: add initial device-tree
>
> .../devicetree/bindings/arm/amlogic.yaml | 7 +
> .../bindings/serial/amlogic,meson-uart.yaml | 4 +
> arch/arm64/boot/dts/amlogic/Makefile | 1 +
> .../amlogic/amlogic-t7-a311d2-khadas-vim4.dts | 54 ++++++
> arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi | 155 ++++++++++++++++++
> drivers/tty/serial/meson_uart.c | 2 +
> 6 files changed, 223 insertions(+)
> create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-t7-a311d2-khadas-vim4.dts
> create mode 100644 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi
>
> --
> 2.41.0
>