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.zh...@freescale.com>
---
- 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
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