Vender version and sdhc spec version of T4240-R1.0-R2.0 is incorrect. The right value should be VVN=0x13, SVN = 0x1. The wrong version number will break down the ADMA data transfer. This defect only exist in T4240-R1.0-R2.0. Signed-off-by: Haijun Zhang <haijun.zhang@xxxxxxxxxxxxx> --- - Depend on patch [1/5] drivers/mmc/host/sdhci-of-esdhc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index c531d75..ba2f234 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -63,6 +63,13 @@ static u16 esdhc_readw(struct sdhci_host *host, int reg) ret = in_be32(host->ioaddr + base) & 0xffff; else ret = (in_be32(host->ioaddr + base) >> shift) & 0xffff; + + /* T4240-R1.0-R2.0 had a incorrect vendor version and spec version */ + if ((reg == SDHCI_HOST_VERSION) && + ((SVR_SOC_VER(svr) == SVR_T4240) && + (SVR_REV(svr) <= 0x20))) + ret = (VENDOR_V_23 << SDHCI_VENDOR_VER_SHIFT) | SDHCI_SPEC_200; + return ret; } -- 1.8.0 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
