On Mon, Dec 18, 2023 at 7:24 AM Andre Przywara <andre.przywara@xxxxxxx> 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 >
