[PATCH v2 2/3] drivers: mmc: uclass: Set removable flag based on device tree property

[Balaji Selvanathan]

The block device removable flag should reflect whether the MMC
device is physically removable (SD card) or soldered (eMMC). This
information is specified in the device tree via the "non-removable"
property and stored in the MMC_CAP_NONREMOVABLE capability flag.

Update the removable flag in the block device descriptor during
controller probe to properly reflect the device's removable status.
This allows the block layer and upper layers (particularly EFI boot
manager) to distinguish between eMMC and SD cards for appropriate
handling.

The default removable=1 is set in mmc_bind(), and this change
overrides it only for non-removable devices after mmc_of_parse()
has set the MMC_CAP_NONREMOVABLE capability from the device tree.

Reviewed-by: Varadarajan Narayanan <varadarajan.narayanan at oss.qualcomm.com>
Signed-off-by: Balaji Selvanathan <balaji.selvanathan at oss.qualcomm.com>
---
Changes in v2:
- Moved removable flag update from generic mmc-uclass.c to platform-
  specific msm_sdhci.c driver
---
 drivers/mmc/msm_sdhci.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mmc/msm_sdhci.c b/drivers/mmc/msm_sdhci.c
index 66f3cf2de4f..13fd4ae8a7d 100644
--- a/drivers/mmc/msm_sdhci.c
+++ b/drivers/mmc/msm_sdhci.c
@@ -189,6 +189,7 @@ static int msm_sdc_probe(struct udevice *dev)
 	struct sdhci_host *host = &prv->host;
 	u32 core_version, core_minor, core_major;
 	struct reset_ctl bcr_rst;
+	struct blk_desc *bdesc;
 	u32 caps;
 	int ret;
 
@@ -252,6 +253,12 @@ static int msm_sdc_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 
+	if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE) {
+		bdesc = mmc_get_blk_desc(&plat->mmc);
+		if (bdesc)
+			bdesc->removable = 0;
+	}
+
 	host->mmc = &plat->mmc;
 	host->mmc->dev = dev;
 	host->ops = &msm_sdhci_ops;

-- 
2.34.1