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SubjectRe: [PATCH] mmc: sunxi: Disable eMMC HS-DDR (MMC_CAP_1_8V_DDR) for Allwinner A80
From
On 26 April 2016 at 17:37, Chen-Yu Tsai <wens@csie.org> wrote:
> eMMC HS-DDR no longer works on the A80, despite it working when support
> for this developed.
>
> Disable it for now.
>
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Thanks, applied for fixes!

Kind regards
Uffe

> ---
>
> Hi,
>
> When i worked on this it was working, but now it isn't. Unfortunately I
> don't have my old tree to do a proper bisect. I probably won't have time
> to dig into this issue before v4.6 release, so it's best to disable it
> on the A80 for now.
>
> Thanks.
>
> ---
> drivers/mmc/host/sunxi-mmc.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
> index 8372a413848c..7fc8b7aa83f0 100644
> --- a/drivers/mmc/host/sunxi-mmc.c
> +++ b/drivers/mmc/host/sunxi-mmc.c
> @@ -1129,6 +1129,11 @@ static int sunxi_mmc_probe(struct platform_device *pdev)
> MMC_CAP_1_8V_DDR |
> MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ;
>
> + /* TODO MMC DDR is not working on A80 */
> + if (of_device_is_compatible(pdev->dev.of_node,
> + "allwinner,sun9i-a80-mmc"))
> + mmc->caps &= ~MMC_CAP_1_8V_DDR;
> +
> ret = mmc_of_parse(mmc);
> if (ret)
> goto error_free_dma;
> --
> 2.8.1
>

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