colibri_imx6: fix video stdout in default environment

[oweals/u-boot.git] / doc / README.fsl-esdhc

diff --git a/doc/README.fsl-esdhc b/doc/README.fsl-esdhc
index 619c6b2d07bcab8bd2486748ad3b5028059659b9..29cc6619eaba7a5caaee80709f04897a6030ceca 100644 (file)
--- a/doc/README.fsl-esdhc
+++ b/doc/README.fsl-esdhc
@@ -1,6 +1,22 @@
-CONFIG_SYS_FSL_ESDHC_LE means ESDHC IP is in little-endian mode.
-CONFIG_SYS_FSL_ESDHC_BE means ESDHC IP is in big-endian mode.
-CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT forces to run at 1.8V.
+Freescale esdhc-specific options
 
-Accessing ESDHC registers can be determined by ESDHC IP's endian
-mode or processor's endian mode.
+       - CONFIG_FSL_ESDHC_ADAPTER_IDENT
+               Support Freescale adapter card type identification. This is implemented by
+               operating Qixis FPGA relevant registers. The STAT_PRES1 register has SDHC
+               Card ID[0:2] bits showing the type of card installed in the SDHC Adapter Slot.
+
+               SDHC Card ID[0:2]       Adapter Card Type
+               0b000                   reserved
+               0b001                   eMMC Card Rev4.5
+               0b010                   SD/MMC Legacy Card
+               0b011                   eMMC Card Rev4.4
+               0b100                   reserved
+               0b101                   MMC Card
+               0b110                   SD Card Rev2.0/3.0
+               0b111                   No card is present
+       - CONFIG_SYS_FSL_ESDHC_LE
+               ESDHC IP is in little-endian mode. Accessing ESDHC registers can be
+               determined by ESDHC IP's endian mode or processor's endian mode.
+       - CONFIG_SYS_FSL_ESDHC_BE
+               ESDHC IP is in big-endian mode. Accessing ESDHC registers can be determined
+               by ESDHC IP's endian mode or processor's endian mode.