[PATCH 2/2] mmc: Add support for the no-mmc-hs400 prop

[Jaehoon Chung]

Hi

> -----Original Message-----
> From: Jonas Karlman <jonas at kwiboo.se>
> Sent: Tuesday, April 9, 2024 6:06 AM
> To: Peng Fan <peng.fan at nxp.com>; Jaehoon Chung <jh80.chung at samsung.com>; Tom Rini <trini at konsulko.com>
> Cc: Jonas Karlman <jonas at kwiboo.se>; u-boot at lists.denx.de
> Subject: [PATCH 2/2] mmc: Add support for the no-mmc-hs400 prop
> 
> The linux commit f722e650d965 ("mmc: core: add support for disabling
> HS400 mode via DT") added support for a no-mmc-hs400 prop.
> 
> Add support for the no-mmc-hs400 prop to disable HS400 host caps.
> 
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>

Reviewed-by: Jaehoon Chung <jh80.chung at samsung.com>

Best Regards,
Jaehoon Chung

> ---
>  drivers/mmc/mmc-uclass.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
> index 1349da72b102..1b454e8ec758 100644
> --- a/drivers/mmc/mmc-uclass.c
> +++ b/drivers/mmc/mmc-uclass.c
> @@ -256,6 +256,9 @@ int mmc_of_parse(struct udevice *dev, struct mmc_config *cfg)
>  		cfg->host_caps |= MMC_CAP(MMC_HS_400) | MMC_CAP(MMC_HS_200);
>  	if (dev_read_bool(dev, "mmc-hs400-enhanced-strobe"))
>  		cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
> +	if (dev_read_bool(dev, "no-mmc-hs400"))
> +		cfg->host_caps &= ~(MMC_CAP(MMC_HS_400) |
> +				    MMC_CAP(MMC_HS_400_ES));
> 
>  	if (dev_read_bool(dev, "non-removable")) {
>  		cfg->host_caps |= MMC_CAP_NONREMOVABLE;
> --
> 2.43.2