请教大家个 nor flash 初始化的问题,谢谢~!
各位大侠 是否知道或遇到过类似的问题,盼指点思路,谢谢背景:
TI AM3352处理器 + SPANSION 的S29GL256的 nor-flash,自研板子
软件中 platform_device_register()和platform_driver_register()打印显示都已先后执行到,driver用的是 .name = "physmap-flash"的 那个
现象:
进入 shell下 ls /dev 下找不到flash设备 mtdblock*
初始化log中 有找不到 命令集的 报错打印(如下),目前没多少进展,
[ 0.942545] mtdoops: mtd device (mtddev=name/number) must be supplied
================+_+=driver======================
[ 0.954392] physmap platform flash device: 02000000 at 08000000
[ 0.962571] physmap-flash.0: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000001 Chip ID 0x002201
[ 0.973433] Amd/Fujitsu Extended Query Table at 0x0040
[ 0.978855] Unknown Amd/Fujitsu Extended Query version Y.Y (0x59/0x59).
[ 0.986002] gen_probe: No supported Vendor Command Set found
[ 0.993060] physmap-flash physmap-flash.0: map_probe failed 已经解决,谢谢大家的关注~
1.
“Unknown Amd/Fujitsu Extended Query version Y.Y (0x59/0x59).”
--是硬件焊接的问题,更换块 焊接ok的板子
2.“gen_probe: No supported Vendor Command Set found
[ 0.993060] physmap-flash physmap-flash.0: map_probe failed”
----在physmap_init()中重复platform_device_register了 "physmap-flash"
需要把CONFIG_MTD_PHYSMAP_COMPAT宏 去掉
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