diff options
Diffstat (limited to 'drivers/mmc/core/core.c')
| -rw-r--r-- | drivers/mmc/core/core.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 01a7142eada36..54ca9dc2114c5 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2267,6 +2267,18 @@ void mmc_rescan(struct work_struct *work) goto out; } + /* + * Ideally we should favor initialization of legacy SD cards and defer + * UHS-II enumeration. However, it seems like cards doesn't reliably + * announce their support for UHS-II in the response to the ACMD41, + * while initializing the legacy SD interface. Therefore, let's start + * with UHS-II for now. + */ + if (!mmc_attach_sd_uhs2(host)) { + mmc_release_host(host); + goto out; + } + for (i = 0; i < ARRAY_SIZE(freqs); i++) { unsigned int freq = freqs[i]; if (freq > host->f_max) { @@ -2299,10 +2311,13 @@ void mmc_rescan(struct work_struct *work) void mmc_start_host(struct mmc_host *host) { + bool power_up = !(host->caps2 & + (MMC_CAP2_NO_PRESCAN_POWERUP | MMC_CAP2_SD_UHS2)); + host->f_init = max(min(freqs[0], host->f_max), host->f_min); host->rescan_disable = 0; - if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)) { + if (power_up) { mmc_claim_host(host); mmc_power_up(host, host->ocr_avail); mmc_release_host(host); |