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authorSourav Poddar <sourav.poddar@ti.com>2013-12-21 12:50:10 +0530
committerJagannadha Sutradharudu Teki <jaganna@xilinx.com>2014-02-18 22:41:09 +0530
commitbb7cd0ddf978b96c40a4889608c9b9ea16127afa (patch)
tree6ab11c37a167dabf49b39c0edcde59292e6035c0 /Licenses
parent570533b820fb4cc2bbe34c44001cc4c371617e37 (diff)
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spi: ti_qspi: Add delay before xfer for am43xx
Without this delay, write/read is failing. Looks like, the WIP always remain set and hence a timeout occurs leading to the error. Without this patch, device does not get probed also. Here is the log. U-Boot# U-Boot# U-Boot# U-Boot# sf probe 0 SF: Unsupported flash IDs: manuf ff, jedec ffff, ext_jedec ffff Failed to initialize SPI flash at 0:0 U-Boot# sf probe 0 While with this patch, log is U-Boot# sf probe 0 SF: Detected MX25L51235F with page size 256 Bytes, erase size 64 KiB, total 64 MiB, mapped at 30000000 U-Boot# sf erase 0 0x80000 SF: 524288 bytes @ 0x0 Erased: OK U-Boot# mw 81000000 0xdededede 0x40000 U-Boot# sf write 81000000 0 0x40000 SF: 262144 bytes @ 0x0 Written: OK U-Boot# sf read 82000000 0 0x40000 SF: 262144 bytes @ 0x0 Read: OK U-Boot# md 0x82000000 Signed-off-by: Sourav Poddar <sourav.poddar@ti.com> Reviewed-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
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