δΊ 2013/10/30 2:34, Scott Wood ει:
On Fri, 2013-10-25 at 09:54 +0800, Haijun Zhang wrote:
T4240 eSDHC host capabilities reigster should have VS33 bit define.
hack the code to add the 3.3 voltage support
Signed-off-by: Roy Zang <[email protected]>
Signed-off-by: Haijun Zhang <[email protected]>
---
arch/powerpc/include/asm/config_mpc85xx.h | 1 +
drivers/mmc/fsl_esdhc.c | 6 ++++++
2 files changed, 7 insertions(+)
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h
b/arch/powerpc/include/asm/config_mpc85xx.h
index 946ea97..84e79c8 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -596,6 +596,7 @@
#define CONFIG_SYS_FSL_SRIO_LIODN
#define CONFIG_SYS_FSL_USB_DUAL_PHY_ENABLE
#define CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY
+#define CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
#define CONFIG_SYS_FSL_ERRATUM_A004468
#define CONFIG_SYS_FSL_ERRATUM_A_004934
#define CONFIG_SYS_FSL_ERRATUM_A005871
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index d4c1eef..b8b2907 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -545,6 +545,12 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg
*cfg)
caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
#endif
+
+/* T4240 host controller capabilities register should have VS33 bit */
+#ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
+ caps = caps | ESDHC_HOSTCAPBLT_VS33;
+#endif
Is there an erratum associated with this? Is this that
t4240qds-specific bug, or a different bug that affects all t4240?
No such relevant errata. I think this capacity missing is also exist on
other T4240 board but not be confirmed.
So, I update this patch to make sure the change only affect T4240QDS.
-Scott
--
Thanks & Regards
Haijun.
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