On 01/30/2013 07:48 PM, Jagannadha Sutradharudu Teki wrote:
Hi Andy,
The latest patch "mmc: Properly determine maximum supported bus width" (sha1: 7798f6dbd5e1a3030ed81a81da5dfb57c3307cac) is causing some error status issue on zynq platform with MMC Plus cards.
Here the out what I get with inclusion of this patch on u-boot tree. zynq-uboot> mmcinfo Error detected in status(0x208100)! Device: zynq_sdhci Manufacturer ID: 1e OEM: ffff Name: MMC Tran Speed: 52000000 Rd Block Len: 512 MMC version 4.0 High Capacity: No Capacity: 1.9 GiB Bus Width: 4-bit
When I revert this path, I am unable to see the status error. zynq-uboot> mmcinfo Device: zynq_sdhci Manufacturer ID: 1e OEM: ffff Name: MMC Tran Speed: 52000000 Rd Block Len: 512 MMC version 4.0 High Capacity: No Capacity: 1.9 GiB Bus Width: 12-bit
I think the above one is also a buggy as my controller is unable to support 12-bit bus width.?
Could you check which bus_width support at your controller? I guess it is set to wrong buswidth.
Best Regards, Jaehoon Chung
Request for any inputs.
Thanks, Jagan.
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