mmcsd: SDIO_CAPS_4BIT_ONLY set buswidth MMCSD_SCR_BUSWIDTH_4BIT

uint8_t buswidth:4; /* Bus widths supported (SD only) */ Signed-off-by: zhangshoukui <[email protected]>
W-M-R · Oct 24, 2024 · 1af82ba · 1af82ba
1 parent d8ed88c
commit 1af82ba
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/drivers/mmcsd/mmcsd_sdio.c b/drivers/mmcsd/mmcsd_sdio.c
@@ -3933,7 +3933,10 @@ static int mmcsd_cardidentify(FAR struct mmcsd_state_s *priv)
 
       finfo("MMC card detected\n");
       priv->type = MMCSD_CARDTYPE_MMC;
-      priv->buswidth |= MMCSD_SCR_BUSWIDTH_4BIT;
+      if ((priv->caps & SDIO_CAPS_4BIT_ONLY) != 0)
+        {
+          priv->buswidth |= MMCSD_SCR_BUSWIDTH_4BIT;
+        }
 
       /* Now, check if this is a MMC card/chip that supports block
        * addressing