Merge tag 'mmc-2025-04-23' of https://source.denx.de/u-boot/custodians/u-boot-mmc

- Introducing back send_init_stream for omap_hsmmc
  to perform the 74 clocks cycle sequence
- Move scmi regulator subnode hack to scmi_regulator
- Typo fix

drivers/firmware/scmi/scmi_agent-uclass.c

@@ -427,14 +427,8 @@ static int scmi_bind_protocols(struct udevice *dev)
 			break;
 		case SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN:
 			if (IS_ENABLED(CONFIG_DM_REGULATOR_SCMI) &&
-			    scmi_protocol_is_supported(dev, protocol_id)) {
+			    scmi_protocol_is_supported(dev, protocol_id))
-				node = ofnode_find_subnode(node, "regulators");
-				if (!ofnode_valid(node)) {
-					dev_err(dev, "no regulators node\n");
-					return -ENXIO;
-				}
 				drv = DM_DRIVER_GET(scmi_voltage_domain);
-			}
 			break;
 		default:
 			break;

drivers/mmc/mmc-uclass.c

@@ -83,6 +83,19 @@ int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
 	return dm_mmc_wait_dat0(mmc->dev, state, timeout_us);
 }
 
+void dm_mmc_send_init_stream(struct udevice *dev)
+{
+	struct dm_mmc_ops *ops = mmc_get_ops(dev);
+
+	if (ops->send_init_stream)
+		ops->send_init_stream(dev);
+}
+
+void mmc_send_init_stream(struct mmc *mmc)
+{
+	dm_mmc_send_init_stream(mmc->dev);
+}
+
 static int dm_mmc_get_wp(struct udevice *dev)
 {
 	struct dm_mmc_ops *ops = mmc_get_ops(dev);

drivers/mmc/mmc.c

@@ -1663,6 +1663,10 @@ static int mmc_execute_tuning(struct mmc *mmc, uint opcode)
 }
 #endif
 
+static void mmc_send_init_stream(struct mmc *mmc)
+{
+}
+
 static int mmc_set_ios(struct mmc *mmc)
 {
 	int ret = 0;
@@ -2550,7 +2554,7 @@ static int mmc_startup(struct mmc *mmc)
 
 	/*
 	 * For MMC cards, set the Relative Address.
-	 * For SD cards, get the Relatvie Address.
+	 * For SD cards, get the Relative Address.
 	 * This also puts the cards into Standby State
 	 */
 	if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
@@ -2929,6 +2933,8 @@ int mmc_get_op_cond(struct mmc *mmc, bool quiet)
 retry:
 	mmc_set_initial_state(mmc);
 
+	mmc_send_init_stream(mmc);
+
 	/* Reset the Card */
 	err = mmc_go_idle(mmc);
 

drivers/mmc/omap_hsmmc.c

@@ -780,6 +780,14 @@ tuning_error:
 	return ret;
 }
 #endif
+
+static void omap_hsmmc_send_init_stream(struct udevice *dev)
+{
+	struct omap_hsmmc_data *priv = dev_get_priv(dev);
+	struct hsmmc *mmc_base = priv->base_addr;
+
+	mmc_init_stream(mmc_base);
+}
 #endif
 
 static void mmc_enable_irq(struct mmc *mmc, struct mmc_cmd *cmd)
@@ -1515,9 +1523,10 @@ static const struct dm_mmc_ops omap_hsmmc_ops = {
 	.get_wp		= omap_hsmmc_getwp,
 #endif
 #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING)
-	.execute_tuning = omap_hsmmc_execute_tuning,
+	.execute_tuning    = omap_hsmmc_execute_tuning,
 #endif
-	.wait_dat0	= omap_hsmmc_wait_dat0,
+	.send_init_stream  = omap_hsmmc_send_init_stream,
+	.wait_dat0	   = omap_hsmmc_wait_dat0,
 };
 #else
 static const struct mmc_ops omap_hsmmc_ops = {

drivers/power/regulator/scmi_regulator.c

@@ -175,12 +175,19 @@ U_BOOT_DRIVER(scmi_regulator) = {
 static int scmi_regulator_bind(struct udevice *dev)
 {
 	struct driver *drv;
+	ofnode regul_node;
 	ofnode node;
 	int ret;
 
+	regul_node = ofnode_find_subnode(dev_ofnode(dev), "regulators");
+	if (!ofnode_valid(regul_node)) {
+		dev_err(dev, "no regulators node\n");
+		return -ENXIO;
+	}
+
 	drv = DM_DRIVER_GET(scmi_regulator);
 
-	ofnode_for_each_subnode(node, dev_ofnode(dev)) {
+	ofnode_for_each_subnode(node, regul_node) {
 		ret = device_bind(dev, drv, ofnode_get_name(node),
 				  NULL, node, NULL);
 		if (ret)

include/mmc.h

@@ -493,6 +493,14 @@ struct dm_mmc_ops {
 	 */
 	int (*set_ios)(struct udevice *dev);
 
+	/**
+	 * send_init_stream() - send the initialization stream: 74 clock cycles
+	 * This is used after power up before sending the first command
+	 *
+	 * @dev:	Device to update
+	 */
+	void (*send_init_stream)(struct udevice *dev);
+
 	/**
 	 * get_cd() - See whether a card is present
 	 *
@@ -572,6 +580,7 @@ struct dm_mmc_ops {
 
 /* Transition functions for compatibility */
 int mmc_set_ios(struct mmc *mmc);
+void mmc_send_init_stream(struct mmc *mmc);
 int mmc_getcd(struct mmc *mmc);
 int mmc_getwp(struct mmc *mmc);
 int mmc_execute_tuning(struct mmc *mmc, uint opcode);