For some unknown reason, writes of larger than 1 block always fail with a checksum error on Qualcomm v5 controllers.
Until this is resolved, work around the issue by setting b_max to 1 for these controllers.
Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- drivers/mmc/msm_sdhci.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/mmc/msm_sdhci.c b/drivers/mmc/msm_sdhci.c index 4ce0de6c47d8..fc3e8d101b6e 100644 --- a/drivers/mmc/msm_sdhci.c +++ b/drivers/mmc/msm_sdhci.c @@ -195,8 +195,15 @@ static int msm_sdc_probe(struct udevice *dev) return ret; host->mmc->priv = &prv->host; upriv->mmc = host->mmc;
+ /* + * FIXME: v5 controllers have a bug in U-Boot that causes all writes + * greater than 1 block to fail. Work around this by setting b_max to 1. + */ + if (var_info->mci_removed) + plat->cfg.b_max = 1; + return sdhci_probe(dev); }
static int msm_sdc_remove(struct udevice *dev)