TI中文支持网AM335x 支持多大的TF卡？这个与linux有关还是跟芯片有关？
Steven Liu1：
常见的2G、4G、8G都支持。
从启动的角度来说和芯片的rom code相关；后续的文件读写之类的，和driver相关程度较大。
启动部分，参考TRM手册的26.1.7.5 MMC / SD Cards
jianhui alvin：
回复 Steven Liu1:
谢谢回答。
目前，我公司已经在mmc1用到32G的emmc作启动了，mmc0作为外部扩展；现在想知道mmc0能支持最大多大的TF卡，这个也是客户想知道的
jianhui alvin：
回复 Steven Liu1:
你好，我想知道的是在系统里面，能用最大多大的TF卡，现在我手上一张128G的，在系统里面用不了。
[ 1402.462951] mmc1: new high speed SDXC card at address 59b4[ 1402.471862] mmcblk1: mmc1:59b4 119 GiB[ 1405.507415] mmcblk1: error -110 sending status command, retrying[ 1405.519683] mmcblk1: error -110 sending stop command, original cmd response 0x280d, card status 0x1001c02[ 1405.529785] mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x280d, card status 0x0[ 1405.539581] mmcblk1: retrying using single block read[ 1410.085998] mmcblk1: error -110 sending status command, retrying[ 1410.101470] mmcblk1: timed out sending r/w cmd command, card status 0x1003805
[ 1413.140380] mmcblk1: timed out sending r/w cmd command, card status 0x1003805
[ 1413.147949] end_request: I/O error, dev mmcblk1, sector 0[ 1413.153625] Buffer I/O error on device mmcblk1, logical block 0[ 1416.196838] mmcblk1: timed out sending r/w cmd command, card status 0x803805[ 1420.743469] mmcblk1: error -110 sending status command, retrying[ 1422.261810] wl12xx: ERROR watchdog interrupt received! starting recovery.[ 1422.269866] wl12xx: Reading FW panic log
