Re: [PATCH v5 0/13] arm64: allwinner: a64: Enable MMC support
From: Maxime Ripard
Date: Mon Jan 30 2017 - 06:10:10 EST
On Fri, Jan 27, 2017 at 10:38:32PM +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.
> Let me know what you think,
Applied the DT bits with Chen-Yu's Acked-by.
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
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