diff options
| author | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2014-08-28 18:15:45 -0700 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-27 10:29:12 -0700 |
| commit | 9e36f69ea168e9bc276c0e1e0f52b07b7debc3cc (patch) | |
| tree | 12082b17fe29f2d42a2a7457ee2ea7d02905c9e7 /drivers | |
| parent | 9ce1e0b186f1efc3afa1db62d66538f2dce57192 (diff) | |
mmc: sdhci-msm: Add dual voltage capability
SDCC5 controller doesn't advertise 1.8v capability by default.
Dual voltage capability is required for SD3.0 support. Add this
capability for controllers that support this based on
device tree configuration.
Change-Id: Ie4cd6db2e7230bc22cd393c8e37d99f49c777cd0
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index ddce818e105c..b2edcaa1c09a 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -2746,11 +2746,20 @@ static void sdhci_set_default_hw_caps(struct sdhci_msm_host *msm_host, /* * Starting with SDCC 5 controller (core major version = 1) - * controller won't advertise 3.0v and 8-bit features except for - * some targets. + * controller won't advertise 3.0v, 1.8v and 8-bit features + * except for some targets. */ if (major >= 1 && minor != 0x11 && minor != 0x12) { + struct sdhci_msm_reg_data *vdd_io_reg; caps = CORE_3_0V_SUPPORT; + /* + * Enable 1.8V support capability on controllers that + * support dual voltage + */ + vdd_io_reg = msm_host->pdata->vreg_data->vdd_io_data; + if (vdd_io_reg && + (vdd_io_reg->low_vol_level != vdd_io_reg->high_vol_level)) + caps |= CORE_1_8V_SUPPORT; if (msm_host->pdata->mmc_bus_width == MMC_CAP_8_BIT_DATA) caps |= CORE_8_BIT_SUPPORT; writel_relaxed( |