diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 8f61f8d6e0ca..f76736b50bc7 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2844,6 +2844,23 @@ int sdhci_add_host(struct sdhci_host *host) host->vmmc = NULL; } +#ifdef CONFIG_REGULATOR + if (host->vmmc) { + ret = regulator_is_supported_voltage(host->vmmc, 3300000, + 3300000); + if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_330))) + caps[0] &= ~SDHCI_CAN_VDD_330; + ret = regulator_is_supported_voltage(host->vmmc, 3000000, + 3000000); + if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_300))) + caps[0] &= ~SDHCI_CAN_VDD_300; + ret = regulator_is_supported_voltage(host->vmmc, 1800000, + 1800000); + if ((ret <= 0) || (!(caps[0] & SDHCI_CAN_VDD_180))) + caps[0] &= ~SDHCI_CAN_VDD_180; + } +#endif /* CONFIG_REGULATOR */ + /* * According to SD Host Controller spec v3.00, if the Host System * can afford more than 150mA, Host Driver should set XPC to 1. Also |