diff options
| author | Doug Anderson <dianders@chromium.org> | 2015-01-13 15:58:44 -0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2015-01-19 09:56:33 +0100 |
| commit | 29d0d161c4ff252c3f9376d5ab05458a494a01ba (patch) | |
| tree | 291760518cb42c81e320df235242bb8652133002 /drivers/mmc/host/dw_mmc.c | |
| parent | c63705e185210ce262f78bcc24fd98a2d0ed817c (diff) | |
mmc: dw_mmc: Power on vqmmc in MMC_POWER_ON, not MMC_POWER_UP
If we power up vqmmc in MMC_POWER_ON then we end up turning it on
before mmc_power_up() sets the signal voltage. That's not so great
since we might be powering it up at the wrong voltage.
Note that this is how Yuvaraj originally coded things up in
<https://patchwork.kernel.org/patch/4401231/> but he changed it on my
suggestion. Apparently I was wrong.
Reported-by: Alexandru M Stan <amstan@chromium.org>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.c')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 2e8abc8b196b..4d2e3c2e1830 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1119,6 +1119,12 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) return; } } + set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags); + regs = mci_readl(slot->host, PWREN); + regs |= (1 << slot->id); + mci_writel(slot->host, PWREN, regs); + break; + case MMC_POWER_ON: if (!IS_ERR(mmc->supply.vqmmc) && !slot->host->vqmmc_enabled) { ret = regulator_enable(mmc->supply.vqmmc); if (ret < 0) @@ -1127,10 +1133,6 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) else slot->host->vqmmc_enabled = true; } - set_bit(DW_MMC_CARD_NEED_INIT, &slot->flags); - regs = mci_readl(slot->host, PWREN); - regs |= (1 << slot->id); - mci_writel(slot->host, PWREN, regs); break; case MMC_POWER_OFF: if (!IS_ERR(mmc->supply.vmmc)) |