[PATCH] mmc: atmel_sdhci: re-enable sdhci after SD Card re-insertion

[Eugen.Hristev at microchip.com]

On 6/22/22 4:30 PM, Sergiu Moga wrote:
> Whenever the SD Card would be removed and then re-inserted while in the
> U-Boot command line, the `SDBPWR` bit of the `SDMMC_PCR` register would
> remain unset afterwards. In order for the bit to be set again after
> re-insertion, register an additional `deferred_probe` method that the
> DM would then transparently call. This method will call the generic
> `sdhci_probe` which will, during its execution flow, set this bit to 1.
> 
> Signed-off-by: Sergiu Moga <sergiu.moga at microchip.com>
> Reported-by: Mihai Sain <mihai.sain at microchip.com>
> Reviewed-by: Eugen Hristev <eugen.hristev at microchip.com>
> ---

Hi Peng,

To take this patch into my tree I would be happy if you had a look or 
reviewed it first.

Thanks,
Eugen

>   drivers/mmc/atmel_sdhci.c | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
> 
> diff --git a/drivers/mmc/atmel_sdhci.c b/drivers/mmc/atmel_sdhci.c
> index 2b5ceeab94..37b0beeed4 100644
> --- a/drivers/mmc/atmel_sdhci.c
> +++ b/drivers/mmc/atmel_sdhci.c
> @@ -52,6 +52,17 @@ struct atmel_sdhci_plat {
>   	struct mmc mmc;
>   };
>   
> +static int atmel_sdhci_deferred_probe(struct sdhci_host *host)
> +{
> +	struct udevice *dev = host->mmc->dev;
> +
> +	return sdhci_probe(dev);
> +}
> +
> +static const struct sdhci_ops atmel_sdhci_ops = {
> +	.deferred_probe	= atmel_sdhci_deferred_probe,
> +};
> +
>   static int atmel_sdhci_probe(struct udevice *dev)
>   {
>   	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
> @@ -104,6 +115,7 @@ static int atmel_sdhci_probe(struct udevice *dev)
>   		return ret;
>   
>   	host->mmc->priv = host;
> +	host->ops = &atmel_sdhci_ops;
>   	upriv->mmc = host->mmc;
>   
>   	clk_free(&clk);
>