[PATCH 7/9] mmc: exynos_dw_mmc: add support for MMC HS200 and HS400 modes

[Peng Fan]

On Fri, Oct 17, 2025 at 08:54:12PM +0530, Kaustabh Chakraborty wrote:
>MMC HS200 and HS400 modes are already supported by the Exynos DW-MMC
>driver in mainline Linux. Using that as reference, add support in the
>U-Boot driver.
>
>The maximum frequency was capped to 50000000, increase it to 200000000,
>which is the required frequency for HS200/HS400. Moreover, add
>MMC_MODE_HS200 and MMC_MODE_HS400 to host capailities. These changes
>allow both host and card to recognize support for HS200/HS400.
>
>This change also includes a new ops function, namely execute_tuning.
>Implementing it would mean that we can no longer rely on the default ops
>provided by dw_mmc.c, thus a new ops instance is created with proper
>fields. The execute_tuning function is modeled after the one available
>in the Linux driver.
>
>Signed-off-by: Kaustabh Chakraborty <kauschluss at disroot.org>

Reviewed-by: Peng Fan <peng.fan at nxp.com>