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mmc: sunxi: Disable eMMC HS-DDR (MMC_CAP_1_8V_DDR) for Allwinner A80
authorChen-Yu Tsai <wens@csie.org>
Tue, 26 Apr 2016 15:37:26 +0000 (23:37 +0800)
committerUlf Hansson <ulf.hansson@linaro.org>
Thu, 28 Apr 2016 09:43:54 +0000 (11:43 +0200)
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>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
drivers/mmc/host/sunxi-mmc.c patch | blob | blame | history

diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 8372a413848c19f8ed61e8c38e6a3b8ebb0a4ba7..7fc8b7aa83f029eb199f1accd3de9d47ea12b152 100644 (file)
--- 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;