Merge branch 'master' of git://git.denx.de/u-boot-mips

drivers/clk/clk_bcm6345.c

@@ -55,15 +55,11 @@ static const struct udevice_id bcm6345_clk_ids[] = {
 static int bcm63xx_clk_probe(struct udevice *dev)
 {
 	struct bcm6345_clk_priv *priv = dev_get_priv(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	return 0;
 }
 

drivers/core/fdtaddr.c

@@ -136,6 +136,21 @@ void *devfdt_get_addr_ptr(struct udevice *dev)
 	return (void *)(uintptr_t)devfdt_get_addr_index(dev, 0);
 }
 
+void *devfdt_remap_addr_index(struct udevice *dev, int index)
+{
+	fdt_addr_t addr = devfdt_get_addr(dev);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_physmem(addr, 0, MAP_NOCACHE);
+}
+
+void *devfdt_remap_addr(struct udevice *dev)
+{
+	return devfdt_remap_addr_index(dev, 0);
+}
+
 void *devfdt_map_physmem(struct udevice *dev, unsigned long size)
 {
 	fdt_addr_t addr = devfdt_get_addr(dev);

drivers/core/read.c

@@ -4,6 +4,8 @@
  * Written by Simon Glass <sjg@chromium.org>
  */
 
+#include <asm/types.h>
+#include <asm/io.h>
 #include <common.h>
 #include <dm.h>
 #include <mapmem.h>
@@ -57,6 +59,16 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index)
 		return devfdt_get_addr_index(dev, index);
 }
 
+void *dev_remap_addr_index(struct udevice *dev, int index)
+{
+	fdt_addr_t addr = dev_read_addr_index(dev, index);
+
+	if (addr == FDT_ADDR_T_NONE)
+		return NULL;
+
+	return map_physmem(addr, 0, MAP_NOCACHE);
+}
+
 fdt_addr_t dev_read_addr(struct udevice *dev)
 {
 	return dev_read_addr_index(dev, 0);
@@ -69,6 +81,11 @@ void *dev_read_addr_ptr(struct udevice *dev)
 	return (addr == FDT_ADDR_T_NONE) ? NULL : map_sysmem(addr, 0);
 }
 
+void *dev_remap_addr(struct udevice *dev)
+{
+	return dev_remap_addr_index(dev, 0);
+}
+
 fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *property,
 			      fdt_size_t *sizep)
 {

drivers/cpu/bmips_cpu.c

@@ -13,8 +13,6 @@
 #include <errno.h>
 #include <asm/io.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 #define REV_CHIPID_SHIFT		16
 #define REV_CHIPID_MASK			(0xffff << REV_CHIPID_SHIFT)
 #define REV_LONG_CHIPID_SHIFT		12
@@ -397,8 +395,7 @@ int bmips_cpu_bind(struct udevice *dev)
 {
 	struct cpu_platdata *plat = dev_get_parent_platdata(dev);
 
-	plat->cpu_id = fdtdec_get_int(gd->fdt_blob, dev_of_offset(dev),
-		"reg", -1);
+	plat->cpu_id = dev_read_u32_default(dev, "reg", -1);
 	plat->device_id = read_c0_prid();
 
 	return 0;
@@ -409,14 +406,11 @@ int bmips_cpu_probe(struct udevice *dev)
 	struct bmips_cpu_priv *priv = dev_get_priv(dev);
 	const struct bmips_cpu_hw *hw =
 		(const struct bmips_cpu_hw *)dev_get_driver_data(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev_get_parent(dev), 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
 	priv->hw = hw;
 
 	return 0;

drivers/gpio/bcm6345_gpio.c

@@ -13,8 +13,6 @@
 #include <asm/gpio.h>
 #include <asm/io.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 struct bcm6345_gpio_priv {
 	void __iomem *reg_dirout;
 	void __iomem *reg_data;
@@ -90,22 +88,16 @@ static int bcm6345_gpio_probe(struct udevice *dev)
 {
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
 	struct bcm6345_gpio_priv *priv = dev_get_priv(dev);
-	fdt_addr_t data_addr, dirout_addr;
-	fdt_size_t data_size, dirout_size;
 
-	dirout_addr = devfdt_get_addr_size_index(dev, 0, &dirout_size);
-	if (dirout_addr == FDT_ADDR_T_NONE)
+	priv->reg_dirout = dev_remap_addr_index(dev, 0);
+	if (!priv->reg_dirout)
 		return -EINVAL;
 
-	data_addr = devfdt_get_addr_size_index(dev, 1, &data_size);
-	if (data_addr == FDT_ADDR_T_NONE)
+	priv->reg_data = dev_remap_addr_index(dev, 1);
+	if (!priv->reg_data)
 		return -EINVAL;
 
-	priv->reg_data = ioremap(data_addr, data_size);
-	priv->reg_dirout = ioremap(dirout_addr, dirout_size);
-
-	uc_priv->gpio_count = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
-					      "ngpios", 32);
+	uc_priv->gpio_count = dev_read_u32_default(dev, "ngpios", 32);
 	uc_priv->bank_name = dev->name;
 
 	return 0;

drivers/led/led_bcm6328.c

@@ -37,8 +37,6 @@
 #define LED_MODE_OFF			3
 #define LED_MODE_MASK			0x3
 
-DECLARE_GLOBAL_DATA_PTR;
-
 struct bcm6328_led_priv {
 	void __iomem *regs;
 	void __iomem *mode;
@@ -149,34 +147,25 @@ static const struct led_ops bcm6328_led_ops = {
 static int bcm6328_led_probe(struct udevice *dev)
 {
 	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
 	/* Top-level LED node */
 	if (!uc_plat->label) {
 		void __iomem *regs;
 		u32 set_bits = 0;
 
-		addr = devfdt_get_addr_size_index(dev, 0, &size);
-		if (addr == FDT_ADDR_T_NONE)
+		regs = dev_remap_addr(dev);
+		if (!regs)
 			return -EINVAL;
 
-		regs = ioremap(addr, size);
-
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "brcm,serial-leds"))
+		if (dev_read_bool(dev, "brcm,serial-leds"))
 			set_bits |= LED_INIT_SLEDEN_MASK;
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "brcm,serial-mux"))
+		if (dev_read_bool(dev, "brcm,serial-mux"))
 			set_bits |= LED_INIT_SLEDMUX_MASK;
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "brcm,serial-clk-low"))
+		if (dev_read_bool(dev, "brcm,serial-clk-low"))
 			set_bits |= LED_INIT_SLEDCLKNPOL_MASK;
-		if (!fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				     "brcm,serial-dat-low"))
+		if (!dev_read_bool(dev, "brcm,serial-dat-low"))
 			set_bits |= LED_INIT_SLEDDATANPOL_MASK;
-		if (!fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				     "brcm,serial-shift-inv"))
+		if (!dev_read_bool(dev, "brcm,serial-shift-inv"))
 			set_bits |= LED_INIT_SLEDSHIFTDIR_MASK;
 
 		clrsetbits_be32(regs + LED_INIT_REG, ~0, set_bits);
@@ -184,17 +173,14 @@ static int bcm6328_led_probe(struct udevice *dev)
 		struct bcm6328_led_priv *priv = dev_get_priv(dev);
 		unsigned int pin;
 
-		addr = devfdt_get_addr_size_index(dev_get_parent(dev), 0,
-						  &size);
-		if (addr == FDT_ADDR_T_NONE)
+		priv->regs = dev_remap_addr(dev);
+		if (!priv->regs)
 			return -EINVAL;
 
-		pin = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev), "reg",
-				      LEDS_MAX);
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
 		if (pin >= LEDS_MAX)
 			return -EINVAL;
 
-		priv->regs = ioremap(addr, size);
 		if (pin < 8) {
 			/* LEDs 0-7 (bits 47:32) */
 			priv->mode = priv->regs + LED_MODE_REG_HI;
@@ -205,8 +191,7 @@ static int bcm6328_led_probe(struct udevice *dev)
 			priv->shift = ((pin - 8) << 1);
 		}
 
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "active-low"))
+		if (dev_read_bool(dev, "active-low"))
 			priv->active_low = true;
 	}
 
@@ -215,27 +200,24 @@ static int bcm6328_led_probe(struct udevice *dev)
 
 static int bcm6328_led_bind(struct udevice *parent)
 {
-	const void *blob = gd->fdt_blob;
-	int node;
+	ofnode node;
 
-	for (node = fdt_first_subnode(blob, dev_of_offset(parent));
-	     node > 0;
-	     node = fdt_next_subnode(blob, node)) {
+	dev_for_each_subnode(node, parent) {
 		struct led_uc_plat *uc_plat;
 		struct udevice *dev;
 		const char *label;
 		int ret;
 
-		label = fdt_getprop(blob, node, "label", NULL);
+		label = ofnode_read_string(node, "label");
 		if (!label) {
 			debug("%s: node %s has no label\n", __func__,
-			      fdt_get_name(blob, node, NULL));
+			      ofnode_get_name(node));
 			return -EINVAL;
 		}
 
 		ret = device_bind_driver_to_node(parent, "bcm6328-led",
-						 fdt_get_name(blob, node, NULL),
-						 offset_to_ofnode(node), &dev);
+						 ofnode_get_name(node),
+						 node, &dev);
 		if (ret)
 			return ret;
 

drivers/led/led_bcm6358.c

@@ -31,8 +31,6 @@
 #define LED_CTRL_BUSY_SHIFT	3
 #define LED_CTRL_BUSY_MASK	(1 << LED_CTRL_BUSY_SHIFT)
 
-DECLARE_GLOBAL_DATA_PTR;
-
 struct bcm6358_led_priv {
 	void __iomem *regs;
 	uint8_t pin;
@@ -114,8 +112,6 @@ static const struct led_ops bcm6358_led_ops = {
 static int bcm6358_led_probe(struct udevice *dev)
 {
 	struct led_uc_plat *uc_plat = dev_get_uclass_platdata(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
 	/* Top-level LED node */
 	if (!uc_plat->label) {
@@ -123,17 +119,14 @@ static int bcm6358_led_probe(struct udevice *dev)
 		unsigned int clk_div;
 		u32 set_bits = 0;
 
-		addr = devfdt_get_addr_size_index(dev, 0, &size);
-		if (addr == FDT_ADDR_T_NONE)
+		regs = dev_remap_addr(dev);
+		if (!regs)
 			return -EINVAL;
 
-		regs = ioremap(addr, size);
-
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "brcm,clk-dat-low"))
+		if (dev_read_bool(dev, "brcm,clk-dat-low"))
 			set_bits |= LED_CTRL_POL_MASK;
-		clk_div = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
-					  "brcm,clk-div", LED_CTRL_CLK_1);
+		clk_div = dev_read_u32_default(dev, "brcm,clk-div",
+					       LED_CTRL_CLK_1);
 		switch (clk_div) {
 		case 8:
 			set_bits |= LED_CTRL_CLK_8;
@@ -157,21 +150,17 @@ static int bcm6358_led_probe(struct udevice *dev)
 		struct bcm6358_led_priv *priv = dev_get_priv(dev);
 		unsigned int pin;
 
-		addr = devfdt_get_addr_size_index(dev_get_parent(dev), 0,
-						  &size);
-		if (addr == FDT_ADDR_T_NONE)
+		priv->regs = dev_remap_addr(dev);
+		if (!priv->regs)
 			return -EINVAL;
 
-		pin = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev), "reg",
-				      LEDS_MAX);
+		pin = dev_read_u32_default(dev, "reg", LEDS_MAX);
 		if (pin >= LEDS_MAX)
 			return -EINVAL;
 
-		priv->regs = ioremap(addr, size);
 		priv->pin = pin;
 
-		if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
-				    "active-low"))
+		if (dev_read_bool(dev, "active-low"))
 			priv->active_low = true;
 	}
 
@@ -180,27 +169,24 @@ static int bcm6358_led_probe(struct udevice *dev)
 
 static int bcm6358_led_bind(struct udevice *parent)
 {
-	const void *blob = gd->fdt_blob;
-	int node;
+	ofnode node;
 
-	for (node = fdt_first_subnode(blob, dev_of_offset(parent));
-	     node > 0;
-	     node = fdt_next_subnode(blob, node)) {
+	dev_for_each_subnode(node, parent) {
 		struct led_uc_plat *uc_plat;
 		struct udevice *dev;
 		const char *label;
 		int ret;
 
-		label = fdt_getprop(blob, node, "label", NULL);
+		label = ofnode_read_string(node, "label");
 		if (!label) {
 			debug("%s: node %s has no label\n", __func__,
-			      fdt_get_name(blob, node, NULL));
+			      ofnode_get_name(node));
 			return -EINVAL;
 		}
 
 		ret = device_bind_driver_to_node(parent, "bcm6358-led",
-						 fdt_get_name(blob, node, NULL),
-						 offset_to_ofnode(node), &dev);
+						 ofnode_get_name(node),
+						 node, &dev);
 		if (ret)
 			return ret;
 

drivers/phy/bcm6318-usbh-phy.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
  *
  * Derived from linux/arch/mips/bcm63xx/usb-common.c:
  *	Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
@@ -79,16 +79,12 @@ static int bcm6318_usbh_probe(struct udevice *dev)
 	struct power_domain pwr_dom;
 	struct reset_ctl rst_ctl;
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	/* enable usbh clock */
 	ret = clk_get_by_name(dev, "usbh", &clk);
 	if (ret < 0)

drivers/phy/bcm6348-usbh-phy.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
  *
  * Derived from linux/arch/mips/bcm63xx/usb-common.c:
  *	Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
@@ -44,16 +44,12 @@ static int bcm6348_usbh_probe(struct udevice *dev)
 	struct bcm6348_usbh_priv *priv = dev_get_priv(dev);
 	struct reset_ctl rst_ctl;
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	/* enable usbh clock */
 	ret = clk_get_by_name(dev, "usbh", &clk);
 	if (ret < 0)

drivers/phy/bcm6358-usbh-phy.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
  *
  * Derived from linux/arch/mips/bcm63xx/usb-common.c:
  *	Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
@@ -57,16 +57,12 @@ static int bcm6358_usbh_probe(struct udevice *dev)
 {
 	struct bcm6358_usbh_priv *priv = dev_get_priv(dev);
 	struct reset_ctl rst_ctl;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	/* perform reset */
 	ret = reset_get_by_index(dev, 0, &rst_ctl);
 	if (ret < 0)

drivers/phy/bcm6368-usbh-phy.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
- * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
+ * Copyright (C) 2018 Álvaro Fernández Rojas <noltari@gmail.com>
  *
  * Derived from linux/arch/mips/bcm63xx/usb-common.c:
  *	Copyright 2008 Maxime Bizon <mbizon@freebox.fr>
@@ -116,15 +116,12 @@ static int bcm6368_usbh_probe(struct udevice *dev)
 #endif
 	struct reset_ctl rst_ctl;
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
 	priv->hw = hw;
 
 	/* enable usbh clock */

drivers/power/domain/bcm6328-power-domain.c

@@ -48,15 +48,11 @@ static int bcm6328_power_domain_off(struct power_domain *power_domain)
 static int bcm6328_power_domain_probe(struct udevice *dev)
 {
 	struct bcm6328_power_domain *priv = dev_get_priv(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	return 0;
 }
 

drivers/ram/bmips_ram.c

@@ -150,14 +150,11 @@ static int bmips_ram_probe(struct udevice *dev)
 	struct bmips_ram_priv *priv = dev_get_priv(dev);
 	const struct bmips_ram_hw *hw =
 		(const struct bmips_ram_hw *)dev_get_driver_data(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
 	priv->hw = hw;
 
 	return 0;

drivers/reset/reset-bcm6345.c

@@ -66,15 +66,11 @@ static const struct udevice_id bcm6345_reset_ids[] = {
 static int bcm6345_reset_probe(struct udevice *dev)
 {
 	struct bcm6345_reset_priv *priv = dev_get_priv(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	return 0;
 }
 

drivers/serial/serial_bcm6345.c

@@ -227,17 +227,13 @@ static int bcm6345_serial_probe(struct udevice *dev)
 {
 	struct bcm6345_serial_priv *priv = dev_get_priv(dev);
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
 	/* get address */
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->base = dev_remap_addr(dev);
+	if (!priv->base)
 		return -EINVAL;
 
-	priv->base = ioremap(addr, size);
-
 	/* get clock rate */
 	ret = clk_get_by_index(dev, 0, &clk);
 	if (ret < 0)

drivers/spi/bcm63xx_hsspi.c

@@ -15,8 +15,6 @@
 #include <wait_bit.h>
 #include <asm/io.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 #define HSSPI_PP			0
 
 #define SPI_MAX_SYNC_CLOCK		30000000
@@ -337,17 +335,13 @@ static int bcm63xx_hsspi_probe(struct udevice *dev)
 	struct bcm63xx_hsspi_priv *priv = dev_get_priv(dev);
 	struct reset_ctl rst_ctl;
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-	priv->num_cs = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
-				       "num-cs", 8);
+	priv->num_cs = dev_read_u32_default(dev, "num-cs", 8);
 
 	/* enable clock */
 	ret = clk_get_by_name(dev, "hsspi", &clk);

drivers/spi/bcm63xx_spi.c

@@ -15,8 +15,6 @@
 #include <wait_bit.h>
 #include <asm/io.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 /* BCM6348 SPI core */
 #define SPI_6348_CLK			0x06
 #define SPI_6348_CMD			0x00
@@ -373,18 +371,14 @@ static int bcm63xx_spi_probe(struct udevice *dev)
 		(const unsigned long *)dev_get_driver_data(dev);
 	struct reset_ctl rst_ctl;
 	struct clk clk;
-	fdt_addr_t addr;
-	fdt_size_t size;
 	int ret;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->base = dev_remap_addr(dev);
+	if (!priv->base)
 		return -EINVAL;
 
 	priv->regs = regs;
-	priv->base = ioremap(addr, size);
-	priv->num_cs = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(dev),
-				       "num-cs", 8);
+	priv->num_cs = dev_read_u32_default(dev, "num-cs", 8);
 
 	/* enable clock */
 	ret = clk_get_by_index(dev, 0, &clk);

drivers/watchdog/bcm6345_wdt.c

@@ -85,15 +85,11 @@ static const struct udevice_id bcm6345_wdt_ids[] = {
 static int bcm6345_wdt_probe(struct udevice *dev)
 {
 	struct bcm6345_wdt_priv *priv = dev_get_priv(dev);
-	fdt_addr_t addr;
-	fdt_size_t size;
 
-	addr = devfdt_get_addr_size_index(dev, 0, &size);
-	if (addr == FDT_ADDR_T_NONE)
+	priv->regs = dev_remap_addr(dev);
+	if (!priv->regs)
 		return -EINVAL;
 
-	priv->regs = ioremap(addr, size);
-
 	bcm6345_wdt_stop(dev);
 
 	return 0;

include/dm/fdtaddr.h

@@ -33,6 +33,28 @@ fdt_addr_t devfdt_get_addr(struct udevice *dev);
  */
 void *devfdt_get_addr_ptr(struct udevice *dev);
 
+/**
+ * devfdt_remap_addr() - Return pointer to the memory-mapped I/O address
+ *                           of the reg property of a device
+ *
+ * @dev: Pointer to a device
+ *
+ * @return Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_remap_addr(struct udevice *dev);
+
+/**
+ * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped
+ *                                 I/O address of the reg property of a device
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ *	   and @index is used to select which one is required
+ *
+ * @dev: Pointer to a device
+ *
+ * @return Pointer to addr, or NULL if there is no such property
+ */
+void *devfdt_remap_addr_index(struct udevice *dev, int index);
+
 /**
  * devfdt_map_physmem() - Read device address from reg property of the
  *                     device node and map the address into CPU address

include/dm/read.h

@@ -112,6 +112,18 @@ int dev_read_size(struct udevice *dev, const char *propname);
  */
 fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
 
+/**
+ * dev_remap_addr_index() - Get the indexed reg property of a device
+ *                               as a memory-mapped I/O pointer
+ *
+ * @dev: Device to read from
+ * @index: the 'reg' property can hold a list of <addr, size> pairs
+ *	   and @index is used to select which one is required
+ *
+ * @return pointer or NULL if not found
+ */
+void *dev_remap_addr_index(struct udevice *dev, int index);
+
 /**
  * dev_read_addr() - Get the reg property of a device
  *
@@ -131,6 +143,16 @@ fdt_addr_t dev_read_addr(struct udevice *dev);
  */
 void *dev_read_addr_ptr(struct udevice *dev);
 
+/**
+ * dev_remap_addr() - Get the reg property of a device as a
+ *                         memory-mapped I/O pointer
+ *
+ * @dev: Device to read from
+ *
+ * @return pointer or NULL if not found
+ */
+void *dev_remap_addr(struct udevice *dev);
+
 /**
  * dev_read_addr_size() - get address and size from a device property
  *
@@ -482,6 +504,16 @@ static inline void *dev_read_addr_ptr(struct udevice *dev)
 	return devfdt_get_addr_ptr(dev);
 }
 
+static inline void *dev_remap_addr(struct udevice *dev)
+{
+	return devfdt_remap_addr(dev);
+}
+
+static inline void *dev_remap_addr_index(struct udevice *dev, int index)
+{
+	return devfdt_remap_addr_index(dev, index);
+}
+
 static inline fdt_addr_t dev_read_addr_size(struct udevice *dev,
 					    const char *propname,
 					    fdt_size_t *sizep)

test/dm/test-fdt.c

@@ -461,3 +461,45 @@ static int dm_test_fdt_translation(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_fdt_translation, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test devfdt_remap_addr_index() */
+static int dm_test_fdt_remap_addr_flat(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	fdt_addr_t addr;
+	void *paddr;
+
+	ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev));
+
+	addr = devfdt_get_addr(dev);
+	ut_asserteq(0x8000, addr);
+
+	paddr = map_physmem(addr, 0, MAP_NOCACHE);
+	ut_assertnonnull(paddr);
+	ut_asserteq_ptr(paddr, devfdt_remap_addr(dev));
+
+	return 0;
+}
+DM_TEST(dm_test_fdt_remap_addr_flat,
+	DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);
+
+/* Test dev_remap_addr_index() */
+static int dm_test_fdt_remap_addr_live(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	fdt_addr_t addr;
+	void *paddr;
+
+	ut_assertok(uclass_find_device_by_seq(UCLASS_TEST_DUMMY, 0, true, &dev));
+
+	addr = dev_read_addr(dev);
+	ut_asserteq(0x8000, addr);
+
+	paddr = map_physmem(addr, 0, MAP_NOCACHE);
+	ut_assertnonnull(paddr);
+	ut_asserteq_ptr(paddr, dev_remap_addr(dev));
+
+	return 0;
+}
+DM_TEST(dm_test_fdt_remap_addr_live,
+	DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);