Merge tag 'dm-pull-6feb20' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm

sandbox conversion to SDL2
TPM TEE driver
Various minor sandbox video enhancements
New driver model core utility functions

9 files changed, 202 insertions, 105 deletions

diff --git a/drivers/core/device.c b/drivers/core/device.c
index 9f39218..89ea820 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -591,7 +591,8 @@ static int device_find_by_ofnode(ofnode node, struct udevice **devp)
 }
 #endif
 
-int device_get_child(struct udevice *parent, int index, struct udevice **devp)
+int device_get_child(const struct udevice *parent, int index,
+		     struct udevice **devp)
 {
 	struct udevice *dev;
 
@@ -603,7 +604,7 @@ int device_get_child(struct udevice *parent, int index, struct udevice **devp)
 	return -ENODEV;
 }
 
-int device_get_child_count(struct udevice *parent)
+int device_get_child_count(const struct udevice *parent)
 {
 	struct udevice *dev;
 	int count = 0;
@@ -614,7 +615,7 @@ int device_get_child_count(struct udevice *parent)
 	return count;
 }
 
-int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
+int device_find_child_by_seq(const struct udevice *parent, int seq_or_req_seq,
 			     bool find_req_seq, struct udevice **devp)
 {
 	struct udevice *dev;
@@ -634,7 +635,7 @@ int device_find_child_by_seq(struct udevice *parent, int seq_or_req_seq,
 	return -ENODEV;
 }
 
-int device_get_child_by_seq(struct udevice *parent, int seq,
+int device_get_child_by_seq(const struct udevice *parent, int seq,
 			    struct udevice **devp)
 {
 	struct udevice *dev;
@@ -652,7 +653,7 @@ int device_get_child_by_seq(struct udevice *parent, int seq,
 	return device_get_device_tail(dev, ret, devp);
 }
 
-int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
+int device_find_child_by_of_offset(const struct udevice *parent, int of_offset,
 				   struct udevice **devp)
 {
 	struct udevice *dev;
@@ -669,7 +670,7 @@ int device_find_child_by_of_offset(struct udevice *parent, int of_offset,
 	return -ENODEV;
 }
 
-int device_get_child_by_of_offset(struct udevice *parent, int node,
+int device_get_child_by_of_offset(const struct udevice *parent, int node,
 				  struct udevice **devp)
 {
 	struct udevice *dev;
@@ -712,7 +713,7 @@ int device_get_global_by_ofnode(ofnode ofnode, struct udevice **devp)
 	return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
 }
 
-int device_find_first_child(struct udevice *parent, struct udevice **devp)
+int device_find_first_child(const struct udevice *parent, struct udevice **devp)
 {
 	if (list_empty(&parent->child_head)) {
 		*devp = NULL;
@@ -739,7 +740,7 @@ int device_find_next_child(struct udevice **devp)
 	return 0;
 }
 
-int device_find_first_inactive_child(struct udevice *parent,
+int device_find_first_inactive_child(const struct udevice *parent,
 				     enum uclass_id uclass_id,
 				     struct udevice **devp)
 {
@@ -757,7 +758,7 @@ int device_find_first_inactive_child(struct udevice *parent,
 	return -ENODEV;
 }
 
-int device_find_first_child_by_uclass(struct udevice *parent,
+int device_find_first_child_by_uclass(const struct udevice *parent,
 				      enum uclass_id uclass_id,
 				      struct udevice **devp)
 {
@@ -774,7 +775,7 @@ int device_find_first_child_by_uclass(struct udevice *parent,
 	return -ENODEV;
 }
 
-int device_find_child_by_name(struct udevice *parent, const char *name,
+int device_find_child_by_name(const struct udevice *parent, const char *name,
 			      struct udevice **devp)
 {
 	struct udevice *dev;
@@ -791,6 +792,64 @@ int device_find_child_by_name(struct udevice *parent, const char *name,
 	return -ENODEV;
 }
 
+int device_first_child_err(struct udevice *parent, struct udevice **devp)
+{
+	struct udevice *dev;
+
+	device_find_first_child(parent, &dev);
+	if (!dev)
+		return -ENODEV;
+
+	return device_get_device_tail(dev, 0, devp);
+}
+
+int device_next_child_err(struct udevice **devp)
+{
+	struct udevice *dev = *devp;
+
+	device_find_next_child(&dev);
+	if (!dev)
+		return -ENODEV;
+
+	return device_get_device_tail(dev, 0, devp);
+}
+
+int device_first_child_ofdata_err(struct udevice *parent, struct udevice **devp)
+{
+	struct udevice *dev;
+	int ret;
+
+	device_find_first_child(parent, &dev);
+	if (!dev)
+		return -ENODEV;
+
+	ret = device_ofdata_to_platdata(dev);
+	if (ret)
+		return ret;
+
+	*devp = dev;
+
+	return 0;
+}
+
+int device_next_child_ofdata_err(struct udevice **devp)
+{
+	struct udevice *dev = *devp;
+	int ret;
+
+	device_find_next_child(&dev);
+	if (!dev)
+		return -ENODEV;
+
+	ret = device_ofdata_to_platdata(dev);
+	if (ret)
+		return ret;
+
+	*devp = dev;
+
+	return 0;
+}
+
 struct udevice *dev_get_parent(const struct udevice *child)
 {
 	return child->parent;
@@ -827,7 +886,7 @@ bool device_has_children(const struct udevice *dev)
 	return !list_empty(&dev->child_head);
 }
 
-bool device_has_active_children(struct udevice *dev)
+bool device_has_active_children(const struct udevice *dev)
 {
 	struct udevice *child;
 
@@ -841,7 +900,7 @@ bool device_has_active_children(struct udevice *dev)
 	return false;
 }
 
-bool device_is_last_sibling(struct udevice *dev)
+bool device_is_last_sibling(const struct udevice *dev)
 {
 	struct udevice *parent = dev->parent;
 
@@ -867,7 +926,7 @@ int device_set_name(struct udevice *dev, const char *name)
 }
 
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
-bool device_is_compatible(struct udevice *dev, const char *compat)
+bool device_is_compatible(const struct udevice *dev, const char *compat)
 {
 	return ofnode_device_is_compatible(dev_ofnode(dev), compat);
 }
diff --git a/drivers/core/devres.c b/drivers/core/devres.c
index 237b426..457e130 100644
--- a/drivers/core/devres.c
+++ b/drivers/core/devres.c
@@ -10,10 +10,12 @@
 #define LOG_CATEGORY LOGC_DEVRES
 
 #include <common.h>
+#include <malloc.h>
 #include <linux/compat.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <dm/device.h>
+#include <dm/devres.h>
 #include <dm/root.h>
 #include <dm/util.h>
 
diff --git a/drivers/core/dump.c b/drivers/core/dump.c
index 4704049..e73ebea 100644
--- a/drivers/core/dump.c
+++ b/drivers/core/dump.c
@@ -96,3 +96,22 @@ void dm_dump_uclass(void)
 		puts("\n");
 	}
 }
+
+void dm_dump_drivers(void)
+{
+	struct driver *d = ll_entry_start(struct driver, driver);
+	const int n_ents = ll_entry_count(struct driver, driver);
+	struct driver *entry;
+	const struct udevice_id *match;
+
+	puts("Driver                Compatible\n");
+	puts("--------------------------------\n");
+	for (entry = d; entry < d + n_ents; entry++) {
+		for (match = entry->of_match; match->compatible; match++)
+			printf("%-20.20s  %s\n",
+			       match == entry->of_match ? entry->name : "",
+			       match->compatible);
+		if (match == entry->of_match)
+			printf("%-20.20s\n", entry->name);
+	}
+}
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c
index 575798f..33811e6 100644
--- a/drivers/core/fdtaddr.c
+++ b/drivers/core/fdtaddr.c
@@ -16,7 +16,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
+fdt_addr_t devfdt_get_addr_index(const struct udevice *dev, int index)
 {
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 	fdt_addr_t addr;
@@ -91,8 +91,8 @@ fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index)
 #endif
 }
 
-fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
-				   fdt_size_t *size)
+fdt_addr_t devfdt_get_addr_size_index(const struct udevice *dev, int index,
+				      fdt_size_t *size)
 {
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	/*
@@ -113,7 +113,7 @@ fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index,
 #endif
 }
 
-fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
+fdt_addr_t devfdt_get_addr_name(const struct udevice *dev, const char *name)
 {
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	int index;
@@ -129,8 +129,8 @@ fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name)
 #endif
 }
 
-fdt_addr_t devfdt_get_addr_size_name(struct udevice *dev, const char *name,
-				     fdt_size_t *size)
+fdt_addr_t devfdt_get_addr_size_name(const struct udevice *dev,
+				     const char *name, fdt_size_t *size)
 {
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 	int index;
@@ -146,17 +146,17 @@ fdt_addr_t devfdt_get_addr_size_name(struct udevice *dev, const char *name,
 #endif
 }
 
-fdt_addr_t devfdt_get_addr(struct udevice *dev)
+fdt_addr_t devfdt_get_addr(const struct udevice *dev)
 {
 	return devfdt_get_addr_index(dev, 0);
 }
 
-void *devfdt_get_addr_ptr(struct udevice *dev)
+void *devfdt_get_addr_ptr(const struct udevice *dev)
 {
 	return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
 }
 
-void *devfdt_remap_addr_index(struct udevice *dev, int index)
+void *devfdt_remap_addr_index(const struct udevice *dev, int index)
 {
 	fdt_addr_t addr = devfdt_get_addr_index(dev, index);
 
@@ -166,7 +166,7 @@ void *devfdt_remap_addr_index(struct udevice *dev, int index)
 	return map_physmem(addr, 0, MAP_NOCACHE);
 }
 
-void *devfdt_remap_addr_name(struct udevice *dev, const char *name)
+void *devfdt_remap_addr_name(const struct udevice *dev, const char *name)
 {
 	fdt_addr_t addr = devfdt_get_addr_name(dev, name);
 
@@ -176,12 +176,12 @@ void *devfdt_remap_addr_name(struct udevice *dev, const char *name)
 	return map_physmem(addr, 0, MAP_NOCACHE);
 }
 
-void *devfdt_remap_addr(struct udevice *dev)
+void *devfdt_remap_addr(const struct udevice *dev)
 {
 	return devfdt_remap_addr_index(dev, 0);
 }
 
-void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
+void *devfdt_map_physmem(const struct udevice *dev, unsigned long size)
 {
 	fdt_addr_t addr = devfdt_get_addr(dev);
 
@@ -191,7 +191,7 @@ void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
 	return map_physmem(addr, size, MAP_NOCACHE);
 }
 
-fdt_addr_t devfdt_get_addr_pci(struct udevice *dev)
+fdt_addr_t devfdt_get_addr_pci(const struct udevice *dev)
 {
 	ulong addr;
 
diff --git a/drivers/core/of_access.c b/drivers/core/of_access.c
index 945b814..acd745c 100644
--- a/drivers/core/of_access.c
+++ b/drivers/core/of_access.c
@@ -20,6 +20,7 @@
  */
 
 #include <common.h>
+#include <malloc.h>
 #include <linux/libfdt.h>
 #include <dm/of_access.h>
 #include <linux/ctype.h>
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 8f0eab2..96a5dd2 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <fdtdec.h>
 #include <fdt_support.h>
+#include <malloc.h>
 #include <linux/libfdt.h>
 #include <dm/of_access.h>
 #include <dm/of_addr.h>
@@ -101,30 +102,47 @@ bool ofnode_read_bool(ofnode node, const char *propname)
 	return prop ? true : false;
 }
 
-const char *ofnode_read_string(ofnode node, const char *propname)
+const void *ofnode_read_prop(ofnode node, const char *propname, int *sizep)
 {
-	const char *str = NULL;
-	int len = -1;
+	const char *val = NULL;
+	int len;
 
 	assert(ofnode_valid(node));
 	debug("%s: %s: ", __func__, propname);
 
 	if (ofnode_is_np(node)) {
 		struct property *prop = of_find_property(
-				ofnode_to_np(node), propname, NULL);
+				ofnode_to_np(node), propname, &len);
 
 		if (prop) {
-			str = prop->value;
+			val = prop->value;
 			len = prop->length;
 		}
 	} else {
-		str = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
+		val = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
 				  propname, &len);
 	}
-	if (!str) {
+	if (!val) {
 		debug("<not found>\n");
+		if (sizep)
+			*sizep = -FDT_ERR_NOTFOUND;
 		return NULL;
 	}
+	if (sizep)
+		*sizep = len;
+
+	return val;
+}
+
+const char *ofnode_read_string(ofnode node, const char *propname)
+{
+	const char *str;
+	int len;
+
+	str = ofnode_read_prop(node, propname, &len);
+	if (!str)
+		return NULL;
+
 	if (strnlen(str, len) >= len) {
 		debug("<invalid>\n");
 		return NULL;
@@ -134,6 +152,16 @@ const char *ofnode_read_string(ofnode node, const char *propname)
 	return str;
 }
 
+int ofnode_read_size(ofnode node, const char *propname)
+{
+	int len;
+
+	if (!ofnode_read_prop(node, propname, &len))
+		return -EINVAL;
+
+	return len;
+}
+
 ofnode ofnode_find_subnode(ofnode node, const char *subnode_name)
 {
 	ofnode subnode;
@@ -236,25 +264,6 @@ ofnode ofnode_get_by_phandle(uint phandle)
 	return node;
 }
 
-int ofnode_read_size(ofnode node, const char *propname)
-{
-	int len;
-
-	if (ofnode_is_np(node)) {
-		struct property *prop = of_find_property(
-				ofnode_to_np(node), propname, NULL);
-
-		if (prop)
-			return prop->length;
-	} else {
-		if (fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
-				&len))
-			return len;
-	}
-
-	return -EINVAL;
-}
-
 fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size)
 {
 	int na, ns;
@@ -419,20 +428,25 @@ ofnode ofnode_path(const char *path)
 		return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
 }
 
-const char *ofnode_get_chosen_prop(const char *name)
+const void *ofnode_read_chosen_prop(const char *propname, int *sizep)
 {
 	ofnode chosen_node;
 
 	chosen_node = ofnode_path("/chosen");
 
-	return ofnode_read_string(chosen_node, name);
+	return ofnode_read_prop(chosen_node, propname, sizep);
+}
+
+const char *ofnode_read_chosen_string(const char *propname)
+{
+	return ofnode_read_chosen_prop(propname, NULL);
 }
 
 ofnode ofnode_get_chosen_node(const char *name)
 {
 	const char *prop;
 
-	prop = ofnode_get_chosen_prop(name);
+	prop = ofnode_read_chosen_prop(name, NULL);
 	if (!prop)
 		return ofnode_null();
 
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 9602e52..1f999b1 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -11,27 +11,29 @@
 #include <mapmem.h>
 #include <dm/of_access.h>
 
-int dev_read_u32(struct udevice *dev, const char *propname, u32 *outp)
+int dev_read_u32(const struct udevice *dev, const char *propname, u32 *outp)
 {
 	return ofnode_read_u32(dev_ofnode(dev), propname, outp);
 }
 
-int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
+int dev_read_u32_default(const struct udevice *dev, const char *propname,
+			 int def)
 {
 	return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
 }
 
-int dev_read_s32(struct udevice *dev, const char *propname, s32 *outp)
+int dev_read_s32(const struct udevice *dev, const char *propname, s32 *outp)
 {
 	return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
 }
 
-int dev_read_s32_default(struct udevice *dev, const char *propname, int def)
+int dev_read_s32_default(const struct udevice *dev, const char *propname,
+			 int def)
 {
 	return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
 }
 
-int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp)
+int dev_read_u32u(const struct udevice *dev, const char *propname, uint *outp)
 {
 	u32 val;
 	int ret;
@@ -44,32 +46,33 @@ int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp)
 	return 0;
 }
 
-int dev_read_u64(struct udevice *dev, const char *propname, u64 *outp)
+int dev_read_u64(const struct udevice *dev, const char *propname, u64 *outp)
 {
 	return ofnode_read_u64(dev_ofnode(dev), propname, outp);
 }
 
-u64 dev_read_u64_default(struct udevice *dev, const char *propname, u64 def)
+u64 dev_read_u64_default(const struct udevice *dev, const char *propname,
+			 u64 def)
 {
 	return ofnode_read_u64_default(dev_ofnode(dev), propname, def);
 }
 
-const char *dev_read_string(struct udevice *dev, const char *propname)
+const char *dev_read_string(const struct udevice *dev, const char *propname)
 {
 	return ofnode_read_string(dev_ofnode(dev), propname);
 }
 
-bool dev_read_bool(struct udevice *dev, const char *propname)
+bool dev_read_bool(const struct udevice *dev, const char *propname)
 {
 	return ofnode_read_bool(dev_ofnode(dev), propname);
 }
 
-ofnode dev_read_subnode(struct udevice *dev, const char *subnode_name)
+ofnode dev_read_subnode(const struct udevice *dev, const char *subnode_name)
 {
 	return ofnode_find_subnode(dev_ofnode(dev), subnode_name);
 }
 
-ofnode dev_read_first_subnode(struct udevice *dev)
+ofnode dev_read_first_subnode(const struct udevice *dev)
 {
 	return ofnode_first_subnode(dev_ofnode(dev));
 }
@@ -79,12 +82,12 @@ ofnode dev_read_next_subnode(ofnode node)
 	return ofnode_next_subnode(node);
 }
 
-int dev_read_size(struct udevice *dev, const char *propname)
+int dev_read_size(const struct udevice *dev, const char *propname)
 {
 	return ofnode_read_size(dev_ofnode(dev), propname);
 }
 
-fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
+fdt_addr_t dev_read_addr_index(const struct udevice *dev, int index)
 {
 	if (ofnode_is_np(dev_ofnode(dev)))
 		return ofnode_get_addr_index(dev_ofnode(dev), index);
@@ -92,7 +95,7 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
 		return devfdt_get_addr_index(dev, index);
 }
 
-fdt_addr_t dev_read_addr_size_index(struct udevice *dev, int index,
+fdt_addr_t dev_read_addr_size_index(const struct udevice *dev, int index,
 				    fdt_size_t *size)
 {
 	if (ofnode_is_np(dev_ofnode(dev)))
@@ -101,7 +104,7 @@ fdt_addr_t dev_read_addr_size_index(struct udevice *dev, int index,
 		return devfdt_get_addr_size_index(dev, index, size);
 }
 
-void *dev_remap_addr_index(struct udevice *dev, int index)
+void *dev_remap_addr_index(const struct udevice *dev, int index)
 {
 	fdt_addr_t addr = dev_read_addr_index(dev, index);
 
@@ -111,7 +114,7 @@ void *dev_remap_addr_index(struct udevice *dev, int index)
 	return map_physmem(addr, 0, MAP_NOCACHE);
 }
 
-fdt_addr_t dev_read_addr_name(struct udevice *dev, const char *name)
+fdt_addr_t dev_read_addr_name(const struct udevice *dev, const char *name)
 {
 	int index = dev_read_stringlist_search(dev, "reg-names", name);
 
@@ -121,7 +124,7 @@ fdt_addr_t dev_read_addr_name(struct udevice *dev, const char *name)
 		return dev_read_addr_index(dev, index);
 }
 
-fdt_addr_t dev_read_addr_size_name(struct udevice *dev, const char *name,
+fdt_addr_t dev_read_addr_size_name(const struct udevice *dev, const char *name,
 				   fdt_size_t *size)
 {
 	int index = dev_read_stringlist_search(dev, "reg-names", name);
@@ -132,7 +135,7 @@ fdt_addr_t dev_read_addr_size_name(struct udevice *dev, const char *name,
 		return dev_read_addr_size_index(dev, index, size);
 }
 
-void *dev_remap_addr_name(struct udevice *dev, const char *name)
+void *dev_remap_addr_name(const struct udevice *dev, const char *name)
 {
 	fdt_addr_t addr = dev_read_addr_name(dev, name);
 
@@ -142,52 +145,52 @@ void *dev_remap_addr_name(struct udevice *dev, const char *name)
 	return map_physmem(addr, 0, MAP_NOCACHE);
 }
 
-fdt_addr_t dev_read_addr(struct udevice *dev)
+fdt_addr_t dev_read_addr(const struct udevice *dev)
 {
 	return dev_read_addr_index(dev, 0);
 }
 
-void *dev_read_addr_ptr(struct udevice *dev)
+void *dev_read_addr_ptr(const struct udevice *dev)
 {
 	fdt_addr_t addr = dev_read_addr(dev);
 
 	return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
 }
 
-void *dev_remap_addr(struct udevice *dev)
+void *dev_remap_addr(const struct udevice *dev)
 {
 	return dev_remap_addr_index(dev, 0);
 }
 
-fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
+fdt_addr_t dev_read_addr_size(const struct udevice *dev, const char *property,
 			      fdt_size_t *sizep)
 {
 	return ofnode_get_addr_size(dev_ofnode(dev), property, sizep);
 }
 
-const char *dev_read_name(struct udevice *dev)
+const char *dev_read_name(const struct udevice *dev)
 {
 	return ofnode_get_name(dev_ofnode(dev));
 }
 
-int dev_read_stringlist_search(struct udevice *dev, const char *property,
+int dev_read_stringlist_search(const struct udevice *dev, const char *property,
 			       const char *string)
 {
 	return ofnode_stringlist_search(dev_ofnode(dev), property, string);
 }
 
-int dev_read_string_index(struct udevice *dev, const char *propname, int index,
-			  const char **outp)
+int dev_read_string_index(const struct udevice *dev, const char *propname,
+			  int index, const char **outp)
 {
 	return ofnode_read_string_index(dev_ofnode(dev), propname, index, outp);
 }
 
-int dev_read_string_count(struct udevice *dev, const char *propname)
+int dev_read_string_count(const struct udevice *dev, const char *propname)
 {
 	return ofnode_read_string_count(dev_ofnode(dev), propname);
 }
 
-int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
+int dev_read_phandle_with_args(const struct udevice *dev, const char *list_name,
 			       const char *cells_name, int cell_count,
 			       int index, struct ofnode_phandle_args *out_args)
 {
@@ -196,34 +199,34 @@ int dev_read_phandle_with_args(struct udevice *dev, const char *list_name,
 					      out_args);
 }
 
-int dev_count_phandle_with_args(struct udevice *dev, const char *list_name,
-				const char *cells_name)
+int dev_count_phandle_with_args(const struct udevice *dev,
+				const char *list_name, const char *cells_name)
 {
 	return ofnode_count_phandle_with_args(dev_ofnode(dev), list_name,
 					      cells_name);
 }
 
-int dev_read_addr_cells(struct udevice *dev)
+int dev_read_addr_cells(const struct udevice *dev)
 {
 	return ofnode_read_addr_cells(dev_ofnode(dev));
 }
 
-int dev_read_size_cells(struct udevice *dev)
+int dev_read_size_cells(const struct udevice *dev)
 {
 	return ofnode_read_size_cells(dev_ofnode(dev));
 }
 
-int dev_read_simple_addr_cells(struct udevice *dev)
+int dev_read_simple_addr_cells(const struct udevice *dev)
 {
 	return ofnode_read_simple_addr_cells(dev_ofnode(dev));
 }
 
-int dev_read_simple_size_cells(struct udevice *dev)
+int dev_read_simple_size_cells(const struct udevice *dev)
 {
 	return ofnode_read_simple_size_cells(dev_ofnode(dev));
 }
 
-int dev_read_phandle(struct udevice *dev)
+int dev_read_phandle(const struct udevice *dev)
 {
 	ofnode node = dev_ofnode(dev);
 
@@ -233,12 +236,13 @@ int dev_read_phandle(struct udevice *dev)
 		return fdt_get_phandle(gd->fdt_blob, ofnode_to_offset(node));
 }
 
-const void *dev_read_prop(struct udevice *dev, const char *propname, int *lenp)
+const void *dev_read_prop(const struct udevice *dev, const char *propname,
+			  int *lenp)
 {
 	return ofnode_get_property(dev_ofnode(dev), propname, lenp);
 }
 
-int dev_read_alias_seq(struct udevice *dev, int *devnump)
+int dev_read_alias_seq(const struct udevice *dev, int *devnump)
 {
 	ofnode node = dev_ofnode(dev);
 	const char *uc_name = dev->uclass->uc_drv->name;
@@ -256,19 +260,19 @@ int dev_read_alias_seq(struct udevice *dev, int *devnump)
 	return ret;
 }
 
-int dev_read_u32_array(struct udevice *dev, const char *propname,
+int dev_read_u32_array(const struct udevice *dev, const char *propname,
 		       u32 *out_values, size_t sz)
 {
 	return ofnode_read_u32_array(dev_ofnode(dev), propname, out_values, sz);
 }
 
-const uint8_t *dev_read_u8_array_ptr(struct udevice *dev, const char *propname,
-				     size_t sz)
+const uint8_t *dev_read_u8_array_ptr(const struct udevice *dev,
+				     const char *propname, size_t sz)
 {
 	return ofnode_read_u8_array_ptr(dev_ofnode(dev), propname, sz);
 }
 
-int dev_read_enabled(struct udevice *dev)
+int dev_read_enabled(const struct udevice *dev)
 {
 	ofnode node = dev_ofnode(dev);
 
@@ -279,23 +283,24 @@ int dev_read_enabled(struct udevice *dev)
 					     ofnode_to_offset(node));
 }
 
-int dev_read_resource(struct udevice *dev, uint index, struct resource *res)
+int dev_read_resource(const struct udevice *dev, uint index,
+		      struct resource *res)
 {
 	return ofnode_read_resource(dev_ofnode(dev), index, res);
 }
 
-int dev_read_resource_byname(struct udevice *dev, const char *name,
+int dev_read_resource_byname(const struct udevice *dev, const char *name,
 			     struct resource *res)
 {
 	return ofnode_read_resource_byname(dev_ofnode(dev), name, res);
 }
 
-u64 dev_translate_address(struct udevice *dev, const fdt32_t *in_addr)
+u64 dev_translate_address(const struct udevice *dev, const fdt32_t *in_addr)
 {
 	return ofnode_translate_address(dev_ofnode(dev), in_addr);
 }
 
-u64 dev_translate_dma_address(struct udevice *dev, const fdt32_t *in_addr)
+u64 dev_translate_dma_address(const struct udevice *dev, const fdt32_t *in_addr)
 {
 	return ofnode_translate_dma_address(dev_ofnode(dev), in_addr);
 }
@@ -308,7 +313,7 @@ int dev_read_alias_highest_id(const char *stem)
 	return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
 }
 
-fdt_addr_t dev_read_addr_pci(struct udevice *dev)
+fdt_addr_t dev_read_addr_pci(const struct udevice *dev)
 {
 	ulong addr;
 
diff --git a/drivers/core/syscon-uclass.c b/drivers/core/syscon-uclass.c
index b9ae821..15f0e42 100644
--- a/drivers/core/syscon-uclass.c
+++ b/drivers/core/syscon-uclass.c
@@ -10,6 +10,7 @@
 #include <errno.h>
 #include <regmap.h>
 #include <dm/device-internal.h>
+#include <dm/device_compat.h>
 #include <dm/lists.h>
 #include <dm/root.h>
 #include <linux/err.h>
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 61192d8..58b19a4 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -271,9 +271,6 @@ int uclass_find_device_by_name(enum uclass_id id, const char *name,
 	return -ENODEV;
 }
 
-#if !CONFIG_IS_ENABLED(OF_CONTROL) || \
-    CONFIG_IS_ENABLED(OF_PLATDATA) || \
-    CONFIG_IS_ENABLED(OF_PRIOR_STAGE)
 int uclass_find_next_free_req_seq(enum uclass_id id)
 {
 	struct uclass *uc;
@@ -295,7 +292,6 @@ int uclass_find_next_free_req_seq(enum uclass_id id)
 
 	return max + 1;
 }
-#endif
 
 int uclass_find_device_by_seq(enum uclass_id id, int seq_or_req_seq,
 			      bool find_req_seq, struct udevice **devp)