Hi, Here is a second attempt at getting the MMC controllers running, the first having been 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. There's a little bit of work to get to SDR104, but that will come eventually. 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, Maxime Andre Przywara (1): arm64: allwinner: a64: Add MMC nodes Maxime Ripard (5): mmc: sunxi: Always set signal delay to 0 for A64 mmc: sunxi: Enable the new timings for the A64 MMC controllers mmc: sunxi: Add EMMC (MMC2) controller compatible arm64: allwinner: a64: Add MMC pinctrl nodes arm64: allwinner: a64: Increase the MMC max frequency arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 67 ++++++++++++++++++++- drivers/mmc/host/sunxi-mmc.c | 63 +++++++++---------- 2 files changed, 97 insertions(+), 33 deletions(-) base-commit: f9ca9b952ee139fbb9cd4d354a33f440bc1049cd -- git-series 0.8.11 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
