Re: [PATCH AUTOSEL 5.10 11/47] mmc: sdhci-iproc: Add ACPI bindings for the RPi

[Sasha Levin]

On Tue, Mar 02, 2021 at 10:16:59AM -0600, Jeremy Linton wrote:
> Hi,
>
>
> On 3/2/21 5:56 AM, Sasha Levin wrote:
> > From: Jeremy Linton <jeremy.linton@xxxxxxx>
> >
> > [ Upstream commit 4f9833d3ec8da34861cd0680b00c73e653877eb9 ]
> >
> > The RPi4 has an Arasan controller it carries over from the RPi3 and a newer
> > eMMC2 controller.  Because of a couple of quirks, it seems wiser to bind
> > these controllers to the same driver that DT is using on this platform
> > rather than the generic sdhci_acpi driver with PNP0D40.
> >
> > So, BCM2847 describes the older Arasan and BRCME88C describes the newer
> > eMMC2. The older Arasan is reusing an existing ACPI _HID used by other OSes
> > booting these tables on the RPi.
> >
> > With this change, Linux is capable of utilizing the SD card slot, and the
> > Wi-Fi when booted with UEFI+ACPI on the RPi4.
>
> For this to actually work on kernels < 5.11 you also need:
>
> c5b1c6dc13da mmc: sdhci: Update firmware interface API

I'll take this one for 5.10 then, thanks!

--
Thanks,
Sasha