Merge branch 'qcom-main' of https://source.denx.de/u-boot/custodians/u-boot-snapdragon

We have been getting a lot more patches from Qualcomm engineers, largely
focusing on IoT, router, and automotive platforms (those with QCS, IPQ,
and SA prefixes specifically).

Quite a variety of changes here:
- Watchdog overflow fix
- Hardcoded fastboot buffer addresses for a few board (hoppefully
  temporary until fastboot is updated to read $fastboot_addr_r)
- Enable memory protection (MMU_MGPROT) for ARCH_SNAPDRAGON
- pinctrl support for the QCS615 soc
- various USB/phy fixes including phy config for msm8996/qcs615
- mmc and i2c clock configuration fixes
- significant fixes for rpmh and regulator drivers
- added config fragment for pixel devices
- sa8775p clock fixes
- support for "flattened" dwc3 DT that recently landed upstream for
  sc7280 (qcs6490) and a few other platforms

arch/arm/Kconfig

@@ -1143,6 +1143,7 @@ config ARCH_SNAPDRAGON
 	select SYSRESET
 	select SYSRESET_PSCI
 	select ANDROID_BOOT_IMAGE_IGNORE_BLOB_ADDR
+	select MMU_PGPROT
 	imply OF_UPSTREAM
 	imply CMD_DM
 	imply DM_USB_GADGET

arch/arm/mach-snapdragon/capsule_update.c

@@ -13,6 +13,7 @@
 #include <efi.h>
 #include <efi_loader.h>
 #include <malloc.h>
+#include <mmc.h>
 #include <scsi.h>
 #include <part.h>
 #include <linux/err.h>
@@ -80,6 +81,23 @@ static enum ab_slot get_part_slot(const char *partname)
 	return SLOT_NONE;
 }
 
+/* Shamelessly copied from lib/efi_loader/efi_device_path.c @ 33 */
+/*
+ * Determine if an MMC device is an SD card.
+ *
+ * @desc	block device descriptor
+ * Return:	true if the device is an SD card
+ */
+static bool is_sd(struct blk_desc *desc)
+{
+	struct mmc *mmc = find_mmc_device(desc->devnum);
+
+	if (!mmc)
+		return false;
+
+	return IS_SD(mmc) != 0U;
+}
+
 /*
  * Determine which partition U-Boot is flashed to based on the boot source (ABL/XBL),
  * the slot status, and prioritizing the uefi partition over xbl if found.
@@ -109,19 +127,21 @@ static int find_target_partition(int *devnum, enum uclass_id *uclass,
 		if (device_get_uclass_id(dev) != UCLASS_BLK)
 			continue;
 
+		desc = dev_get_uclass_plat(dev);
+
 		/* If we have a UFS then don't look at any other block devices */
 		if (have_ufs) {
 			if (device_get_uclass_id(dev->parent->parent) != UCLASS_UFS)
 				continue;
+		}
 		/*
-		 * If we don't have UFS, then U-Boot must be on the eMMC which is always the first
-		 * MMC device.
+		 * If we don't have UFS, then U-Boot must be on the eMMC
 		 */
-		} else if (dev->parent->seq_ > 0) {
+		else if (IS_ENABLED(CONFIG_MMC) && is_sd(desc)) {
+			log_debug("skipped SD-Card (devnum %d)\n", desc->devnum);
 			continue;
 		}
 
-		desc = dev_get_uclass_plat(dev);
 		if (!desc || desc->part_type == PART_TYPE_UNKNOWN)
 			continue;
 		for (partnum = 1;; partnum++) {

arch/arm/mach-snapdragon/of_fixup.c

@@ -32,7 +32,7 @@
  * DT here. This improves compatibility with upstream DT and simplifies the
  * porting process for new devices.
  */
-static int fixup_qcom_dwc3(struct device_node *root, struct device_node *glue_np)
+static int fixup_qcom_dwc3(struct device_node *root, struct device_node *glue_np, bool flat)
 {
 	struct device_node *dwc3;
 	int ret, len, hsphy_idx = 1;
@@ -41,6 +41,19 @@ static int fixup_qcom_dwc3(struct device_node *root, struct device_node *glue_np
 
 	debug("Fixing up %s\n", glue_np->name);
 
+	/* New DT flattens the glue and controller into a single node. */
+	if (flat) {
+		dwc3 = glue_np;
+		debug("%s uses flat DT\n", glue_np->name);
+	} else {
+		/* Find the DWC3 node itself */
+		dwc3 = of_find_compatible_node(glue_np, NULL, "snps,dwc3");
+		if (!dwc3) {
+			log_err("Failed to find dwc3 node\n");
+			return -ENOENT;
+		}
+	}
+
 	/* Tell the glue driver to configure the wrapper for high-speed only operation */
 	ret = of_write_prop(glue_np, "qcom,select-utmi-as-pipe-clk", 0, NULL);
 	if (ret) {
@@ -48,13 +61,6 @@ static int fixup_qcom_dwc3(struct device_node *root, struct device_node *glue_np
 		return ret;
 	}
 
-	/* Find the DWC3 node itself */
-	dwc3 = of_find_compatible_node(glue_np, NULL, "snps,dwc3");
-	if (!dwc3) {
-		log_err("Failed to find dwc3 node\n");
-		return -ENOENT;
-	}
-
 	phandles = of_get_property(dwc3, "phys", &len);
 	len /= sizeof(*phandles);
 	if (len == 1) {
@@ -104,13 +110,25 @@ static int fixup_qcom_dwc3(struct device_node *root, struct device_node *glue_np
 
 static void fixup_usb_nodes(struct device_node *root)
 {
-	struct device_node *glue_np = root;
+	struct device_node *glue_np = root, *tmp;
 	int ret;
+	bool flat;
+
+	while (true) {
+		flat = false;
+		/* First check for the old DT format with glue node then the new flattened format */
+		tmp = of_find_compatible_node(glue_np, NULL, "qcom,dwc3");
+		if (!tmp) {
+			tmp = of_find_compatible_node(glue_np, NULL, "qcom,snps-dwc3");
+			flat = !!tmp;
+		}
+		if (!tmp)
+			break;
+		glue_np = tmp;
 
-	while ((glue_np = of_find_compatible_node(glue_np, NULL, "qcom,dwc3"))) {
 		if (!of_device_is_available(glue_np))
 			continue;
-		ret = fixup_qcom_dwc3(root, glue_np);
+		ret = fixup_qcom_dwc3(root, glue_np, flat);
 		if (ret)
 			log_warning("Failed to fixup node %s: %d\n", glue_np->name, ret);
 	}