[PATCH 0/2] arm64: dts: allwinner: Add BananaPi M4 Berry
Chen-Yu Tsai
wens at csie.org
Sun Dec 17 21:47:33 PST 2023
On Mon, Dec 18, 2023 at 7:24 AM Andre Przywara <andre.przywara at arm.com> wrote:
>
> The BananaPi M4 Berry is a development board with the Allwinner H618
> SoC. It comes with 2GB DRAM and 8GB eMMC flash, with the usual suspects
> like HDMI, SD card, GPIO headers. There are four USB ports connected
> via an on-board hub chip, and a Gigabit Ethernet socket. Also there is
> a USB WiFi chip soldered on the board.
> More details: https://linux-sunxi.org/Sinovoip_Banana_Pi_M4_Berry
>
> I don't have this board, so this is a "call for testing".
> One thing to consider:
> - The USB WiFi chip has a CHIP_EN pin, which can turn the chip off.
> It is pulled up by a resistor, so works out of the box, but is also
> connected to a GPIO (PC2), so the chip can be disabled or reset via
> this pin. Since this is a USB device, we don't have a DT node to
> announce this pin. Any ideas how this should be handled? At the moment
> I ignore it, but it could also be modelled as a USB VBUS regulator for
> USB port 1, to which it is connected.
There was a talk on this topic at Plumbers:
https://lpc.events/event/17/contributions/1507/
So I'd say a proper solution is being worked on.
ChenYu
> When testing this, please have a look at:
> - Does the eMMC work in HS200 mode? The vendor DT described that as a
> 3.3V controlled eMMC only, but clearly the schematic uses 1.8V, which
> allows faster transfer modes. "hdparm -t" should suffice for a quick
> test.
> - Do USB full-speed (aka USB v1.1) peripherals like keyboard or mouse
> work on the USB ports? I disabled the OHCI node, since the hub should
> not need this, but it would be good to double check.
> - Similarly the USB WiFi chip probably doesn't need USB 1.1 modes, so
> please check this still works.
>
> Apart from the missing audio and video support (which are due to missing
> bindings for the H616/H618 SoC), most of the peripherals are supported.
>
> Patch 1/2 adds the board compatible string to the bindings, patch 2/2
> adds the actual .dts file.
>
> Please have a look!
>
> Thanks,
> Andre
>
> Andre Przywara (2):
> dt-bindings: arm: sunxi: document BananaPi M4 Berry board name
> arm64: dts: allwinner: h618: add BananaPi M4 Berry board
>
> .../devicetree/bindings/arm/sunxi.yaml | 5 +
> arch/arm64/boot/dts/allwinner/Makefile | 1 +
> .../sun50i-h618-bananapi-m4-berry.dts | 229 ++++++++++++++++++
> 3 files changed, 235 insertions(+)
> create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-h618-bananapi-m4-berry.dts
>
> --
> 2.35.8
>
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