On Tue, 2024-07-02 at 18:15 +0200, Philippe Mathieu-Daudé wrote: > On 2/7/24 07:06, Andrew Jeffery wrote: > > On Fri, 2024-06-28 at 11:16 +0200, Cédric Le Goater wrote: > > > On 6/28/24 9:02 AM, Philippe Mathieu-Daudé wrote: > > > > When booting U-boot/Linux on Aspeed boards via eMMC, > > > > some commands don't behave as expected from the spec. > > > > > > > > Add the 'x-aspeed-emmc-kludge' property to allow non > > > > standard uses until we figure out the reasons. > > > > > > I am not aware of any singularity in the eMMC logic provided by Aspeed. > > > U-Boot and Linux drivers seem very generic. May be others can tell. > > > > I'm not aware of any command kludges. The main problem I had when I > > wrote the Linux driver for the Aspeed controller was the phase tuning, > > but that doesn't sound related. > > Yeah I don't think anything Aspeed nor U-boot related, we > model CSD/CID registers per the SD spec, not MMC. Various > fields are identical, but few differ, this might be the > problem. > > I rather respect the spec by default, so until we figure > the issue, are you OK to use a 'x-emmc-kludge' property > and set it on the Aspeed boards?
Dropping the implication that it's the fault of the Aspeed controller seems reasonable (without further evidence that it's true). Andrew
