mx6qsabresd: Document the mapping of USDHC[2-4]
This documents the SD card identifier so it is easier for user to spot
which card number will be used, if need.
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
diff --git a/board/freescale/mx6qsabresd/mx6qsabresd.c b/board/freescale/mx6qsabresd/mx6qsabresd.c
index 2b3926a..5ebbff3 100644
--- a/board/freescale/mx6qsabresd/mx6qsabresd.c
+++ b/board/freescale/mx6qsabresd/mx6qsabresd.c
@@ -160,6 +160,13 @@
{
int i;
+ /*
+ * According to the board_mmc_init() the following map is done:
+ * (U-boot device node) (Physical Port)
+ * mmc0 SD2
+ * mmc1 SD3
+ * mmc2 eMMC
+ */
for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
switch (i) {
case 0: