[PATCH 3/3] mci: detect SD card v3

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

We define the constant and the erase group determination code queries
the version, but we didn't actually set it anywhere.

The code determining the SD version was taken from U-Boot, so sync it to
add v3.0 support[1].

[1]: https://github.com/u-boot/u-boot/blob/v2026.04-rc3/drivers/mmc/mmc.c#L1430

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 drivers/mci/mci-core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 517e4de1c6b0..ef5c4c5d6a5d 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -977,6 +977,8 @@ static int sd_change_freq(struct mci *mci)
 		break;
 	case 2:
 		mci->version = SD_VERSION_2;
+		if ((mci->scr[0] >> 15) & 0x1)
+			mci->version = SD_VERSION_3;
 		break;
 	default:
 		mci->version = SD_VERSION_1_0;
-- 
2.47.3