[PATCH] mmc: Change the frequency to MMC_HS_52 when selecting hs400

Tom Rini trini at konsulko.com
Fri Sep 6 03:09:23 CEST 2024


On Tue, 23 Apr 2024 11:00:57 +0530, Venkatesh Yadav Abbarapu wrote:

> Per JESD84-B51 P47, host need to change frequency to <=52MHz
> after setting HS_TIMING to 0x1, and host need to set the
> 8-bit DDR buswidth. Currently setting the frequency to 26MHz
> and trying to switch 8-bit DDR buswidth resulting timeouts.
> 
> mmc dev 1 0
> Select HS400 failed -110
> switch to partitions #0, OK
> mmc1(part 0) is current device
> 
> [...]

Applied to u-boot/next, thanks!

-- 
Tom




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