mmc: adjust switching to 4-bit mode for MMC devices

CMD6 is a normal command on MMC, but an application command on SD. And the parameters and response type are different. Change-Id: I0583b8a98cf18dc4d77d28066673d0d07229e161 Reviewed-on: https://review.haiku-os.org/c/haiku/+/10934 Reviewed-by: Adrien Destugues <[email protected]>
2026-05-07 07:22:21 +00:00
parent 1e9473f97e
commit 5efaab5061
3 changed files with 47 additions and 10 deletions
@@ -46,10 +46,10 @@ enum SD_COMMANDS {
 	// Basic commands, class 0
 	GO_IDLE_STATE = 0,
 	MMC_SEND_OP_COND = 1,
-		// MMC only,reserved in SD.
 	ALL_SEND_CID = 2,
 	SD_SEND_RELATIVE_ADDR = 3,
 	MMC_SET_RELATIVE_ADDR = 3,
+	MMC_SWITCH = 6, // Same command number as SD_SET_BUS_WIDTH, but this one is not an ACMD
 	SELECT_DESELECT_CARD = 7,
 	SD_SEND_IF_COND = 8,
 	MMC_SEND_EXT_CSD = 8,
@@ -76,6 +76,7 @@ enum SD_COMMANDS {
 };


+// Application commands are sent with a prefix CMD55 (SD_APP_CMD)
 enum SDHCI_APPLICATION_COMMANDS {
 	SD_SET_BUS_WIDTH = 6,
 	SD_SEND_OP_COND = 41,