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f6e27ba5b4
It turned out with some boards (FPGA firmwares?) and cards combos current clock settings doesn't work as expected leading to strange card freezes or corrupted data being read from the card. Especially this was seen with Transcend 2Gb cards shipped as a part of ARC SDP: ----------------->8--------------- AXS# mmcinfo Device: Synopsys Mobile storage Manufacturer ID: 74 OEM: 4a60 Name: SDC Tran Speed: 50000000 Rd Block Len: 512 SD version 3.0 High Capacity: No Capacity: 1.8 GiB Bus Width: 4-bit Erase Group Size: 512 Bytes AXS# fatload mmc 0 ** Unrecognized filesystem type ** ----------------->8--------------- With this change that problem is fixed. Note "Tran Speed" above doesn't match clock value set in DW MMC. It is max value for card's speed class. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> |
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