[PATCH v3 0/4] HS400 and HS400ES support for Exynos DW-MMC drivers
Peng Fan
peng.fan at nxp.com
Mon Jun 22 02:32:34 CEST 2026
> Subject: Re: [PATCH v3 0/4] HS400 and HS400ES support for Exynos
> DW-MMC drivers
>
> On 2026-06-13 13:13 +05:30, Kaustabh Chakraborty wrote:
> > Since upstream dts version v7.0+, Exynos 7870 devices have an
> explicit
> > `bus-width = <8>` property. This results in the U-Boot driver trying
> > to initialize the HS400 mode, which appears to fail. The HS400
> support
> > added in the DW-MMC Exynos driver appears to have an incomplete
> init
> > sequence.
> >
> > This patch series adds the missing pieces to enable HS400 support,
> and
> > additionally adds support for HS400ES too.
> >
> > The last patch in the series also enables HS400ES support in the
> > exynos-mobile defconfig.
> >
> > Signed-off-by: Kaustabh Chakraborty <kauschluss at disroot.org>
>
> Just a bump; failure to pull this series would render upstream stable U-
> Boot v2026.07 on the Samsung Galaxy J7 Prime (samsung-on7xelte)
> unable to load any operating system due to lack of a storage device.
>
> As of yet I do not see the series in master, next, nor in the MMC
> Custodian tree.
I see this patchset was delegated to prom, not mmc maintainer.
Minkyu may pick it up?
https://patchwork.ozlabs.org/project/uboot/list/?submitter=88698¶m=state&order=submitter
Regards
Peng
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