[U-Boot] [U-Boot, U-BOOT] mmc: sdhci: Enable 8-bit bus width only for 3.0 spec onwards

[Andy Fleming]

On Tue, May 21, 2013 at 03:01:36PM +0530, Jagannadha Sutradharudu Teki wrote:
> CAP register don't have any information for 8-bit buswidth support
> on 2.0 sdhci spec, only from 3.0 onwards bit[18] got this information.
> 
> Due to this misassignment in sdhci, mmc is setting 8-bit buswidth using
> mmc_set_bus_width even if controller doesn't support.
> Below change has code information.
> "mmc: Properly determine maximum supported bus width"
> (sha1: 7798f6dbd5e1a3030ed81a81da5dfb57c3307cac)
> 
> Bug log: <mmc plus and emmc cards)
> -------
> zynq-uboot> mmcinfo
> Error detected in status(0x208100)!
> Device: zynq_sdhci
> Manufacturer ID: fe
> .....
> 
> So enable 8-bit support only for 3.0 spec using CAP and for below 3.0
> assign mmc->host_caps = MMC_MODE_8BIT on respective platform driver
> if host have a support.
> 
> Signed-off-by: Jagannadha Sutradharudu Teki <jaganna at xilinx.com>

Applied, thanks.

Andy