CPU:am3358 PHY:DP83848 X2 RMII接口
RMII2中有个管脚U16 GPMC_A9 mode3有两种定义MMC2_DAT7 or RMII2_CRS_DV ,如下文所示:
(10) Silicon revision 1.0 devices only provide the MMC2_DAT7 signal when Mode3 is selected. Silicon revision 2.0 and newer devices implement another level of pin multiplexing which
provides the original MMC2_DAT7 signal or RMII2_CRS_DV signal when Mode3 is selected. This new level of of pin multiplexing is selected with bit zero of the SMA2 register. For more
details refer to Section 1.2 of the AM335x Technical Reference Manual.
1. rmii2插拔网线有link up/down的提示,但ping不通,应该跟该管脚mode3默认为MMC2_DAT7 有关吧?
2. 如果有关,在kernel下应如何修改呢?
