[U-Boot] [PATCH 4/6] mmc: fsl_esdhc: Add support to force VSELECT set

[Otavio Salvador]

There are board were we cannot do voltage negotiation but want to set
the VSELECT bit forcely to ensure it to work at 1.8V.

This commit adds CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT flag for this use.

Signed-off-by: Otavio Salvador <otavio at ossystems.com.br>
---

 drivers/mmc/fsl_esdhc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index c75b38f..b3870e2 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -517,6 +517,10 @@ static int esdhc_init(struct mmc *mmc)
 	/* Set timout to the maximum value */
 	esdhc_clrsetbits32(&regs->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
 
+#ifdef CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT
+	esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
+#endif
+
 	return 0;
 }
 
-- 
2.0.0