Re: [PATCH 0/6] arm64: dts: qcom: sc8280xp: set GPI DMA channels according to DSDT

[Pengyu Luo]

On Sat, Jun 6, 2026 at 9:21 PM Icenowy Zheng <zhengxingda@xxxxxxxxxxx> wrote:
>
> 在 2026-06-06六的 17:46 +0800，Pengyu Luo写道：
> > On 2026-06-06 17:28:35+08:00, Icenowy Zheng wrote:
> > > 在 2026-06-06六的 17:22 +0800，Pengyu Luo写道：
> > >
> > > > On 2026-06-02 21:21:27+08:00, Icenowy Zheng wrote:
> > > >
> > > > The magnetic keyboard (USB HID) can't be connected somehow,
> > > > others
> > > > are
> > > > fine, such as the spi touchscreen (not upstream yet), which
> > > > utilizes
> > > > DMA definitely. My config is here https://pastebin.com/SdjuyJYk
> > >
> > > Is this a defconfig?
> > >
> >
> > Yes.
> >
> > > BTW it seems that CONFIG_ASYNC_TX_DMA needs to be selected too for
> > > exhibiting the problem (because there should be "public" GPI DMA
> > > consumers to trigger the stuck/reset).
> > >
> >
> > Is this still necessary? I checked the fedora discussion and your GPI
> > DMA fix. And GPI DMA is only for the QUP-supported peripherals as the
> > binding mentioned, devicetree/bindings/dma/qcom,gpi.yaml
>
> The devicetree without this fix seems to be still incorrect, because
> with the device tree fix even if the GPI DMA driver misbehaves the
> system won't be stuck (although it will iterate all GPI channels and
> then fail to function at all).
>

Back to the start. You said some GPI interfaces aren't available to
HLOS, your mask is 0xb(0b1011), so I use 0x4(0b100) did a quick test,
and spi6 consumed it, no stuck or reset. Could you give me a
unavailable channel?

Best wishes,
Pengyu