Merge branch 'next'

Merge all outstanding changes from the current next branch in now that
we have released.

6 files changed, 87 insertions, 12 deletions

diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig
index a3b0399342..a594899f37 100644
--- a/drivers/core/Kconfig
+++ b/drivers/core/Kconfig
@@ -195,6 +195,13 @@ config SPL_SIMPLE_BUS
 	  Supports the 'simple-bus' driver, which is used on some systems
 	  in SPL.
 
+config SIMPLE_PM_BUS
+	bool "Support simple-pm-bus driver"
+	depends on DM && OF_CONTROL && CLK && POWER_DOMAIN
+	help
+	  Supports the 'simple-pm-bus' driver, which is used for busses that
+	  have power domains and/or clocks which need to be enabled before use.
+
 config OF_TRANSLATE
 	bool "Translate addresses using fdt_translate_address"
 	depends on DM && OF_CONTROL
diff --git a/drivers/core/Makefile b/drivers/core/Makefile
index c707026a3a..10f4bece33 100644
--- a/drivers/core/Makefile
+++ b/drivers/core/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_$(SPL_TPL_)ACPIGEN) += acpi.o
 obj-$(CONFIG_DEVRES) += devres.o
 obj-$(CONFIG_$(SPL_)DM_DEVICE_REMOVE)	+= device-remove.o
 obj-$(CONFIG_$(SPL_)SIMPLE_BUS)	+= simple-bus.o
+obj-$(CONFIG_SIMPLE_PM_BUS)	+= simple-pm-bus.o
 obj-$(CONFIG_DM)	+= dump.o
 obj-$(CONFIG_$(SPL_TPL_)REGMAP)	+= regmap.o
 obj-$(CONFIG_$(SPL_TPL_)SYSCON)	+= syscon-uclass.o
diff --git a/drivers/core/read.c b/drivers/core/read.c
index 047089c886..8bb456bc3f 100644
--- a/drivers/core/read.c
+++ b/drivers/core/read.c
@@ -167,7 +167,7 @@ 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);
+	return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
 }
 
 void *dev_remap_addr(const struct udevice *dev)
@@ -275,15 +275,17 @@ 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;
-	int ret;
+	int ret = -ENOTSUPP;
 
 	if (ofnode_is_np(node)) {
 		ret = of_alias_get_id(ofnode_to_np(node), uc_name);
 		if (ret >= 0)
 			*devnump = ret;
 	} else {
+#if CONFIG_IS_ENABLED(OF_CONTROL)
 		ret = fdtdec_get_alias_seq(gd->fdt_blob, uc_name,
 					   ofnode_to_offset(node), devnump);
+#endif
 	}
 
 	return ret;
diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index 4a214eff7c..a67a237b88 100644
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -310,13 +310,13 @@ int regmap_raw_read_range(struct regmap *map, uint range_num, uint offset,
 	}
 	range = &map->ranges[range_num];
 
-	ptr = map_physmem(range->start + offset, val_len, MAP_NOCACHE);
-
 	if (offset + val_len > range->size) {
 		debug("%s: offset/size combination invalid\n", __func__);
 		return -ERANGE;
 	}
 
+	ptr = map_physmem(range->start + offset, val_len, MAP_NOCACHE);
+
 	switch (val_len) {
 	case REGMAP_SIZE_8:
 		*((u8 *)valp) = __read_8(ptr, map->endianness);
@@ -419,13 +419,13 @@ int regmap_raw_write_range(struct regmap *map, uint range_num, uint offset,
 	}
 	range = &map->ranges[range_num];
 
-	ptr = map_physmem(range->start + offset, val_len, MAP_NOCACHE);
-
 	if (offset + val_len > range->size) {
 		debug("%s: offset/size combination invalid\n", __func__);
 		return -ERANGE;
 	}
 
+	ptr = map_physmem(range->start + offset, val_len, MAP_NOCACHE);
+
 	switch (val_len) {
 	case REGMAP_SIZE_8:
 		__write_8(ptr, val, map->endianness);
diff --git a/drivers/core/simple-pm-bus.c b/drivers/core/simple-pm-bus.c
new file mode 100644
index 0000000000..51dc9b206f
--- /dev/null
+++ b/drivers/core/simple-pm-bus.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com>
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+
+/*
+ * Power domains are taken care of by driver_probe, so we just have to enable
+ * clocks
+ */
+static int simple_pm_bus_probe(struct udevice *dev)
+{
+	int ret;
+	struct clk_bulk *bulk = dev_get_priv(dev);
+
+	ret = clk_get_bulk(dev, bulk);
+	if (ret)
+		return ret;
+
+	ret = clk_enable_bulk(bulk);
+	if (ret && ret != -ENOSYS && ret != -ENOTSUPP) {
+		clk_release_bulk(bulk);
+		return ret;
+	}
+	return 0;
+}
+
+static int simple_pm_bus_remove(struct udevice *dev)
+{
+	int ret;
+	struct clk_bulk *bulk = dev_get_priv(dev);
+
+	ret = clk_release_bulk(bulk);
+	if (ret && ret != -ENOSYS && ret != -ENOTSUPP)
+		return ret;
+	else
+		return 0;
+}
+
+static const struct udevice_id simple_pm_bus_ids[] = {
+	{ .compatible = "simple-pm-bus" },
+	{ }
+};
+
+U_BOOT_DRIVER(simple_pm_bus_drv) = {
+	.name	= "simple_pm_bus",
+	.id	= UCLASS_SIMPLE_BUS,
+	.of_match = simple_pm_bus_ids,
+	.probe = simple_pm_bus_probe,
+	.remove = simple_pm_bus_remove,
+	.priv_auto_alloc_size = sizeof(struct clk_bulk),
+	.flags	= DM_FLAG_PRE_RELOC,
+};
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 2ab419cfe4..c3f1b73cd6 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -689,13 +689,14 @@ int uclass_unbind_device(struct udevice *dev)
 
 int uclass_resolve_seq(struct udevice *dev)
 {
+	struct uclass *uc = dev->uclass;
+	struct uclass_driver *uc_drv = uc->uc_drv;
 	struct udevice *dup;
-	int seq;
+	int seq = 0;
 	int ret;
 
 	assert(dev->seq == -1);
-	ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, dev->req_seq,
-					false, &dup);
+	ret = uclass_find_device_by_seq(uc_drv->id, dev->req_seq, false, &dup);
 	if (!ret) {
 		dm_warn("Device '%s': seq %d is in use by '%s'\n",
 			dev->name, dev->req_seq, dup->name);
@@ -707,9 +708,17 @@ int uclass_resolve_seq(struct udevice *dev)
 		return ret;
 	}
 
-	for (seq = 0; seq < DM_MAX_SEQ; seq++) {
-		ret = uclass_find_device_by_seq(dev->uclass->uc_drv->id, seq,
-						false, &dup);
+	if (CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_SEQ_ALIAS) &&
+	    (uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS)) {
+		/*
+		 * dev_read_alias_highest_id() will return -1 if there no
+		 * alias. Thus we can always add one.
+		 */
+		seq = dev_read_alias_highest_id(uc_drv->name) + 1;
+	}
+
+	for (; seq < DM_MAX_SEQ; seq++) {
+		ret = uclass_find_device_by_seq(uc_drv->id, seq, false, &dup);
 		if (ret == -ENODEV)
 			break;
 		if (ret)