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SubjectRe: [PATCH v6 14/17] arm64: dts: allwinner: Add Allwinner H616 .dtsi file
On Mon, 24 May 2021 14:02:20 +0200
Maxime Ripard <> wrote:

> Hi,
> On Wed, May 19, 2021 at 11:41:49AM +0100, Andre Przywara wrote:
> > This (relatively) new SoC is similar to the H6, but drops the (broken)
> > PCIe support and the USB 3.0 controller. It also gets the management
> > controller removed, which in turn removes *some*, but not all of the
> > devices formerly dedicated to the ARISC (CPUS).
> > And while there is still the extra sunxi interrupt controller, the
> > package lacks the corresponding NMI pin, so no interrupts for the PMIC.
> >
> > USB is a bit tricky: host controller 0, 1 and 3 depend on some help from
> > controller and PHY 2, so we need to include one reset line and one
> > clock gate from HCI 2 into every other HCI node, plus need some nasty
> > quirk.
> >
> > The reserved memory node is actually handled by Trusted Firmware now,
> > but U-Boot fails to propagate this to a separately loaded DTB, so we
> > keep it in here for now, until U-Boot learns to do this properly.
> >
> > Signed-off-by: Andre Przywara <>
> As far as I can see, the IOMMU hasn't changed between the H6 and the
> H616, so it would be worth enabling

I would rather not include anything that can't be tested at this point.
IIUC the IOMMU is still only for the video devices, which I omitted at
all so far - the display engine definitely needs code changes (Jernej
has something in the making).
So I'd like to wait for the IOMMU nodes till we get DE or VE support.


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