xref: /OK3568_Linux_fs/u-boot/doc/README.fsl-esdhc (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593SmuzhiyunFreescale esdhc-specific options
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun	- CONFIG_FSL_ESDHC_ADAPTER_IDENT
4*4882a593Smuzhiyun		Support Freescale adapter card type identification. This is implemented by
5*4882a593Smuzhiyun		operating Qixis FPGA relevant registers. The STAT_PRES1 register has SDHC
6*4882a593Smuzhiyun		Card ID[0:2] bits showing the type of card installed in the SDHC Adapter Slot.
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun		SDHC Card ID[0:2]	Adapter Card Type
9*4882a593Smuzhiyun		0b000			reserved
10*4882a593Smuzhiyun		0b001			eMMC Card Rev4.5
11*4882a593Smuzhiyun		0b010			SD/MMC Legacy Card
12*4882a593Smuzhiyun		0b011			eMMC Card Rev4.4
13*4882a593Smuzhiyun		0b100			reserved
14*4882a593Smuzhiyun		0b101			MMC Card
15*4882a593Smuzhiyun		0b110			SD Card Rev2.0/3.0
16*4882a593Smuzhiyun		0b111			No card is present
17*4882a593Smuzhiyun	- CONFIG_SYS_FSL_ESDHC_LE
18*4882a593Smuzhiyun		ESDHC IP is in little-endian mode. Accessing ESDHC registers can be
19*4882a593Smuzhiyun		determined by ESDHC IP's endian mode or processor's endian mode.
20*4882a593Smuzhiyun	- CONFIG_SYS_FSL_ESDHC_BE
21*4882a593Smuzhiyun		ESDHC IP is in big-endian mode. Accessing ESDHC registers can be determined
22*4882a593Smuzhiyun		by ESDHC IP's endian mode or processor's endian mode.
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