From 222a1f490722c60d73efaa3387e617ff5b730eb6 Mon Sep 17 00:00:00 2001
From: Sergiu Moga <sergiu.moga@microchip.com>
Date: Wed, 22 Jun 2022 16:30:47 +0300
Subject: [PATCH] mmc: atmel_sdhci: re-enable sdhci after SD Card re-insertion
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@microchip.com>
Reported-by: Mihai Sain <mihai.sain@microchip.com>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
---
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);
--
2.39.5