[PATCH v3 0/13] arm64: allwinner: a64: Enable MMC support
maxime.ripard at free-electrons.com
Mon Jan 23 02:58:42 PST 2017
On Mon, Jan 16, 2017 at 05:56:50PM +0100, Maxime Ripard wrote:
> Here is a new attempt at getting the MMC controllers running, following the
> work done by Andre.
> This has been tested on a board with one SDIO device (a Marvell WiFi chip)
> and a Kingston eMMC with 1.8V IOs.
> For SDIO, the HS DDR mode works just fine. That serie also enables the
> SDR104 mode to work on the devices that are capable of this.
> For the eMMC, HS200 with the voltage switch works. HS400 doesn't at the
> moment, but since it's significantly more complex, and at the same time
> Allwinner recommends to limit its frequency to 100MHz, this doesn't have
> any benefits. If there's any at some point, this can be added later.
Unless you have objections, I'd really like this to be in
4.11. There's a bunch of things where I'm not entirely sure
(especially the clock gating part), it would be great if you could
have a look.
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 801 bytes
Desc: not available
More information about the linux-arm-kernel