| Message ID | 1454088108-2332-4-git-send-email-wens@csie.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index bb4592696046..2aee17cd85ae 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -1131,6 +1131,7 @@ static int sunxi_mmc_probe(struct platform_device *pdev) mmc->f_min = 400000; mmc->f_max = 52000000; mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | + MMC_CAP_1_8V_DDR | MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ; ret = mmc_of_parse(mmc);
Now that clock delay settings for 8 bit DDR are correct, and vqmmc support is available, we can enable MMC_CAP_1_8V_DDR support. This enables MMC HS-DDR at up to 52 MHz, even if signal voltage switching is not available. Signed-off-by: Chen-Yu Tsai <wens@csie.org> --- There was discussion about an alternative: setting this capability in the DT to preserve DT backwards compatibility. However just setting it in the DT without the driver updates also breaks it. Furthermore, Maxime's latest "clk: sunxi: Refactor A31 PLL6 so that it can be reused" patch will break DT compatility. Given the above, I see no reason to try and maintain compatibility only to fail. --- drivers/mmc/host/sunxi-mmc.c | 1 + 1 file changed, 1 insertion(+)