Re: [PATCH v3 0/3] arm64: dts: sun50i: H6: Enable SPI controller

[Maxime Ripard <mripard-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>]

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On Thu, Jan 16, 2020 at 11:11:45PM +0000, Andre Przywara wrote:
> Even though the SPI controller in the Allwinner H6 SoC is more advanced
> than in the previous generations (it supports 3-wire and 4-wire mode),
> the register set stays backwards-compatible. So we can use the existing
> driver to use the "normal" SPI mode, for instance to access the SPI
> flash soldered on the Pine H64 board.
>
> These two patches allow this by adding the SPI controller nodes to the
> DT. The compatible strings include an H6 specific name, so that any
> future 4-wire enhancements for instance would be automatically usable
> once the driver learns this new trick. For now we use the H3 fallback
> name to bind the current driver.
>
> This time I tested this actual branch  (on top of sunxi/dt-for-5.6),
> on a Pine H64, both the internal SPI flash as well with SPI flash
> connected to the other SPI controller available on the GPIO headers.
>
> As the SPI0-CS0 pin clashes with the eMMC CMD pin, we keep this
> node disabled by default, to avoid losing the eMMC if it probes last.
> People (or U-Boot) can enable it if needed.

Queued all three for 5.7, thanks!
Maxime

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