diff options
author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2016-04-07 23:49:56 +0200 |
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committer | Klaus Goger <klaus.goger@theobroma-systems.com> | 2016-09-18 13:45:14 +0200 |
commit | 3107262b564318ef55bb5e308fe18a9edff08c80 (patch) | |
tree | b87cd1069583fdf063fe17da40768ace8f82bc98 /drivers | |
parent | 7406394fa0c53875235c19cb42b8942d8b491e05 (diff) |
sunxi: issue a MMC hardware reset on core_init
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/mmc/sunxi_mmc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index 7b33094d84..4a7dbed043 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -255,7 +255,12 @@ static int sunxi_mmc_core_init(struct mmc *mmc) /* Reset controller */ writel(SUNXI_MMC_GCTRL_RESET, &mmchost->reg->gctrl); + do { /* spin */ } while (readl(&mmchost->reg->gctrl) & SUNXI_MMC_GCTRL_RESET); + + /* Toggle RST output */ + writel(0, &mmchost->reg->hwrst); udelay(1000); + writel(1, &mmchost->reg->hwrst); return 0; } |