[U-Boot] [PATCH] mmc:fsl_esdhc: fix invalidate dcache scope

Shengzhou Liu shengzhou.liu at nxp.com
Thu Apr 7 06:15:59 CEST 2016


> -----Original Message-----
> From: York Sun [mailto:york.sun at nxp.com]
> Sent: Wednesday, April 06, 2016 11:26 PM
> To: Shengzhou Liu <shengzhou.liu at nxp.com>; u-boot at lists.denx.de
> Subject: Re: [PATCH] mmc:fsl_esdhc: fix invalidate dcache scope
> >
> 
> Shenghzou,
> 
> This is not a correct fix. This issue is related to
> 
> http://lists.denx.de/pipermail/u-boot/2015-December/236272.html
> http://lists.denx.de/pipermail/u-boot/2016-March/249377.html
> 
> In short, the invalidate_dcache_range function was added for
> 512x/5xxx/83xx/85xx. Although it shouldn't do any harm, it actually does. I
> haven't got a chance to investigate. Please look into it if you can.
> 
> York

York,   
This patch is just a quick hack, I thought root cause is needed to be dug, this issue didn't occur on ARM, just happened on PPC(e.g. T1/T2/T4 platforms). I have no time on this(occupied on ONL), suggest MMC owner continue to investigate it.
Shengzhou


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