diff options
Diffstat (limited to 'drivers/mmc/core/host.c')
| -rw-r--r-- | drivers/mmc/core/host.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 88c95dbfd9cf..049ec4867268 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -271,7 +271,7 @@ EXPORT_SYMBOL(mmc_of_parse_clk_phase); int mmc_of_parse(struct mmc_host *host) { struct device *dev = host->parent; - u32 bus_width, drv_type, cd_debounce_delay_ms; + u32 bus_width, drv_type, cd_debounce_delay_ms, cq_allow; int ret; if (!dev || !dev_fwnode(dev)) @@ -408,6 +408,15 @@ int mmc_of_parse(struct mmc_host *host) host->caps2 &= ~(MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_1_2V | MMC_CAP2_HS400_ES); + cq_allow = 0; + /* + * Downstream property - if a u32 and 2 instead of a bool, + * trust most A2 SD cards claiming CQ support. + */ + device_property_read_u32(dev, "supports-cqe", &cq_allow); + if (cq_allow == 2) + host->caps2 |= MMC_CAP2_SD_CQE_PERMISSIVE; + /* Must be after "non-removable" check */ if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) { if (host->caps & MMC_CAP_NONREMOVABLE) |