dts: Move to 'zephyr,memory-attr'

Move to 'zephyr,memory-attr' and use the newly introduced helpers.

Signed-off-by: Carlo Caione <ccaione@baylibre.com>

boards/arm/arduino_giga_r1/arduino_giga_r1_m7.dts

@@ -29,7 +29,7 @@
 		device_type = "memory";
 		reg = <0xc0000000 DT_SIZE_M(8)>;
 		zephyr,memory-region = "SDRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	aliases {

boards/arm/stm32f746g_disco/stm32f746g_disco.dts

@@ -45,7 +45,7 @@
 		device_type = "memory";
 		reg = <0xc0000000 DT_SIZE_M(16)>;
 		zephyr,memory-region = "SDRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	aliases {

boards/arm/stm32f7508_dk/stm32f7508_dk.dts

@@ -46,7 +46,7 @@
 		device_type = "memory";
 		reg = <0xc0000000 DT_SIZE_M(16)>;
 		zephyr,memory-region = "SDRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	aliases {

boards/arm/stm32f769i_disco/stm32f769i_disco.dts

@@ -28,7 +28,7 @@
 		device_type = "memory";
 		reg = <0xc0000000 DT_SIZE_M(16)>;
 		zephyr,memory-region = "SDRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	leds {

boards/arm/stm32h747i_disco/stm32h747i_disco_m7.dts

@@ -27,7 +27,7 @@
 		device_type = "memory";
 		reg = <0xd0000000 DT_SIZE_M(32)>;
 		zephyr,memory-region = "SDRAM2";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	leds {

boards/arm/stm32h7b3i_dk/stm32h7b3i_dk.dts

@@ -48,7 +48,7 @@
 		device_type = "memory";
 		reg = <0xd0000000 DT_SIZE_M(16)>;
 		zephyr,memory-region = "SDRAM2";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	transceiver0: can-phy0 {

boards/arm64/fvp_baser_aemv8r/fvp_baser_aemv8r.dts

@@ -41,7 +41,7 @@
 			compatible = "zephyr,memory-region", "mmio-dram";
 			reg = <0x80000000 DT_SIZE_M(2048)>;
 			zephyr,memory-region = "DEVICE_REGION";
-			zephyr,memory-region-mpu = "IO";
+			zephyr,memory-attr = "IO";
 		};
 	};
 };

doc/hardware/arch/arm_cortex_m.rst

@@ -440,9 +440,8 @@ are programmed during system boot.
   SRAM. (An exception to this setting is when :kconfig:option:`CONFIG_MPU_GAP_FILLING` is disabled (Arm v8-M only);
   in that case no SRAM MPU programming is done so the access is determined by the default
   Arm memory map policies, allowing for privileged-only RWX permissions on SRAM).
-* All the memory regions defined in the devicetree with the compatible
+* All the memory regions defined in the devicetree with the property
-  :dtcompatible:`zephyr,memory-region` and at least the property
+  ``zephyr,memory-attr`` defining the MPU permissions for the memory region.
-  ``zephyr,memory-region-mpu`` defining the MPU permissions for the memory region.
   See the next section for more details.
 
 The above MPU regions are defined in :file:`soc/arm/common/cortex_m/arm_mpu_regions.c`.
@@ -453,13 +452,12 @@ configure its own fixed MPU regions in the SoC definition.
 Fixed MPU regions defined in devicetree
 ---------------------------------------
 
-The user can define memory regions to be allocated and created in the linker
+When the property ``zephyr,memory-attr`` is present in a memory node, a new MPU
-script using nodes with the :dtcompatible:`zephyr,memory-region` devicetree
+region will be allocated and programmed during system boot. When used with the
-compatible. When the property ``zephyr,memory-region-mpu`` is present in such
+:dtcompatible:`zephyr,memory-region` devicetree compatible, it will result in a
-a node, a new MPU region will be allocated and programmed during system
+linker section being generated associated to that MPU region.
-boot.
 
-The property ``zephyr,memory-region-mpu`` is a string carrying the attributes
+The property ``zephyr,memory-attr`` is a string carrying the attributes
 for the MPU region. It is converted to a C token for use defining the attributes
 of the MPU region.
 
@@ -471,7 +469,7 @@ For example, to define a new non-cacheable memory region in devicetree:
         compatible = "zephyr,memory-region", "mmio-sram";
         reg = <0x20300000 0x100000>;
         zephyr,memory-region = "SRAM_NO_CACHE";
-        zephyr,memory-region-mpu = "RAM_NOCACHE";
+        zephyr,memory-attr = "RAM_NOCACHE";
    };
 
 This will automatically create a new MPU entry in

drivers/adc/adc_stm32.c

@@ -251,7 +251,7 @@ static int adc_stm32_dma_start(const struct device *dev,
  * The entire buffer must be in a single region.
  * An example of how the SRAM region can be defined in the DTS:
  *	&sram4 {
- *		zephyr,memory-region-mpu = "RAM_NOCACHE";
+ *		zephyr,memory-attr = "RAM_NOCACHE";
  *	};
  */
 static bool address_in_non_cacheable_sram(const uint16_t *buffer, const uint16_t size)
@@ -259,12 +259,12 @@ static bool address_in_non_cacheable_sram(const uint16_t *buffer, const uint16_t
 	/* Default if no valid SRAM region found or buffer+size not located in a single region */
 	bool cachable = false;
 #define IS_NON_CACHEABLE_REGION_FN(node_id)                                                    \
-	COND_CODE_1(DT_NODE_HAS_PROP(node_id, zephyr_memory_region_mpu), ({                    \
+	COND_CODE_1(DT_NODE_HAS_PROP(node_id, zephyr_memory_attr), ({                          \
 			const uint32_t region_start = DT_REG_ADDR(node_id);                    \
 			const uint32_t region_end = region_start + DT_REG_SIZE(node_id);       \
 			if (((uint32_t)buffer >= region_start) &&                              \
 				(((uint32_t)buffer + size) < region_end)) {                    \
-				cachable = strcmp(DT_PROP(node_id, zephyr_memory_region_mpu),  \
+				cachable = strcmp(DT_PROP(node_id, zephyr_memory_attr),        \
 						"RAM_NOCACHE") == 0;                           \
 			}                                                                      \
 		}),                                                                            \

drivers/dma/dma_stm32_bdma.c

@@ -809,11 +809,11 @@ static int bdma_stm32_init(const struct device *dev)
 	 * This check verifies that the non-cachable flag is set in the DTS.
 	 * For example:
 	 *	&sram4 {
-	 *		zephyr,memory-region-mpu = "RAM_NOCACHE";
+	 *		zephyr,memory-attr = "RAM_NOCACHE";
 	 *	};
 	 */
-#if DT_NODE_HAS_PROP(DT_NODELABEL(sram4), zephyr_memory_region_mpu)
+#if DT_NODE_HAS_PROP(DT_NODELABEL(sram4), zephyr_memory_attr)
-	if (strcmp(DT_PROP(DT_NODELABEL(sram4), zephyr_memory_region_mpu), "RAM_NOCACHE") != 0) {
+	if (strcmp(DT_PROP(DT_NODELABEL(sram4), zephyr_memory_attr), "RAM_NOCACHE") != 0) {
 		LOG_ERR("SRAM4 is not set as non-cachable.");
 		return -EIO;
 	}

dts/arm/nxp/nxp_lpc55S1x_common.dtsi

@@ -61,7 +61,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x20010000 DT_SIZE_K(16)>;
 		zephyr,memory-region = "USB_SRAM";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 };
 

dts/arm/nxp/nxp_lpc55S2x_common.dtsi

@@ -75,7 +75,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x40100000  DT_SIZE_K(16)>;
 		zephyr,memory-region = "USB_SRAM";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 };
 

dts/arm/nxp/nxp_lpc55S6x_common.dtsi

@@ -95,7 +95,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x100000 DT_SIZE_K(16)>;
 		zephyr,memory-region = "USB_SRAM";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	syscon: syscon@0 {

dts/arm/nxp/nxp_rt5xx_common.dtsi

@@ -84,7 +84,7 @@
 		compatible =  "zephyr,memory-region", "mmio-sram";
 		reg = <0x40140000 DT_SIZE_K(16)>;
 		zephyr,memory-region = "SRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 };
 

dts/arm/nxp/nxp_rt6xx_common.dtsi

@@ -62,7 +62,7 @@
 		compatible =  "zephyr,memory-region", "mmio-sram";
 		reg = <0x40140000 DT_SIZE_K(16)>;
 		zephyr,memory-region = "SRAM1";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 };
 

dts/arm/st/f7/stm32f7.dtsi

@@ -47,7 +47,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x90000000 DT_SIZE_M(256)>;
 		zephyr,memory-region = "QSPI";
-		zephyr,memory-region-mpu = "EXTMEM";
+		zephyr,memory-attr = "EXTMEM";
 	};
 
 	clocks {

dts/arm/st/h7/stm32h7.dtsi

@@ -48,7 +48,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x90000000 DT_SIZE_M(256)>;
 		zephyr,memory-region = "QSPI";
-		zephyr,memory-region-mpu = "EXTMEM";
+		zephyr,memory-attr = "EXTMEM";
 	};
 
 	clocks {

dts/bindings/base/zephyr,memory-region.yaml

@@ -5,7 +5,7 @@ description: Compatible for devices resulting in linker memory regions
 
 compatible: "zephyr,memory-region"
 
-include: base.yaml
+include: [base.yaml, "zephyr,memory-attr.yaml"]
 
 properties:
   zephyr,memory-region:
@@ -16,17 +16,3 @@ properties:
       memory region in the final executable. The region address and size
       is taken from the <reg> property, while the name is the value of
       this property.
-
-  zephyr,memory-region-mpu:
-    type: string
-    enum:
-      - "RAM"
-      - "RAM_NOCACHE"
-      - "FLASH"
-      - "PPB"
-      - "IO"
-      - "EXTMEM"
-    description: |
-      Signify that this node should result in a dedicated MPU region. The
-      region address and size are taken from the <reg> property, while the MPU
-      attribute is the value of this property.

include/zephyr/linker/devicetree_regions.h

@@ -92,8 +92,6 @@
 #define _DT_SECTION_SIZE(node_id)	UTIL_CAT(_DT_SECTION_PREFIX(node_id), _size)
 #define _DT_SECTION_LOAD(node_id)	UTIL_CAT(_DT_SECTION_PREFIX(node_id), _load_start)
 
-#define _DT_ATTR(token)			UTIL_CAT(UTIL_CAT(REGION_, token), _ATTR)
-
 /**
  * @brief Declare a memory region
  *
@@ -162,35 +160,6 @@
 	_DT_SECTION_SIZE(node_id) = _DT_SECTION_END(node_id) - _DT_SECTION_START(node_id);	\
 	_DT_SECTION_LOAD(node_id) = LOADADDR(LINKER_DT_NODE_REGION_NAME_TOKEN(node_id));
 
-/**
- * Call the user-provided MPU_FN() macro passing the expected arguments
- */
-#define _EXPAND_MPU_FN(node_id, MPU_FN, ...)					\
-	MPU_FN(LINKER_DT_NODE_REGION_NAME(node_id),				\
-	       DT_REG_ADDR(node_id),						\
-	       DT_REG_SIZE(node_id),						\
-	       _DT_ATTR(DT_STRING_TOKEN(node_id, zephyr_memory_region_mpu))),
-
-/**
- * Check that the node_id has both properties:
- *  - zephyr,memory-region-mpu
- *  - zephyr,memory-region
- *
- * and call the EXPAND_MPU_FN() macro
- */
-#define _CHECK_ATTR_FN(node_id, EXPAND_MPU_FN, ...)					\
-	COND_CODE_1(UTIL_AND(DT_NODE_HAS_PROP(node_id, zephyr_memory_region_mpu),	\
-			     DT_NODE_HAS_PROP(node_id, zephyr_memory_region)),		\
-		   (EXPAND_MPU_FN(node_id, __VA_ARGS__)),				\
-		   ())
-
-/**
- * Call _CHECK_ATTR_FN() for each enabled node passing EXPAND_MPU_FN() as
- * explicit argument and the user-provided MPU_FN() macro in __VA_ARGS__
- */
-#define _CHECK_APPLY_FN(compat, EXPAND_MPU_FN, ...)					\
-	DT_FOREACH_STATUS_OKAY_VARGS(compat, _CHECK_ATTR_FN, EXPAND_MPU_FN, __VA_ARGS__)
-
 /** @endcond */
 
 /**
@@ -211,87 +180,4 @@
 #define LINKER_DT_SECTIONS() \
 	DT_FOREACH_STATUS_OKAY(_DT_COMPATIBLE, _SECTION_DECLARE)
 
-/**
- * @brief Generate MPU regions from the device tree nodes with compatible
- *        'zephyr,memory-region' and 'zephyr,memory-region-mpu' attribute.
- *
- * Helper macro to apply an MPU_FN macro to all the memory regions declared
- * using the 'zephyr,memory-region-mpu' property and the 'zephyr,memory-region'
- * compatible.
- *
- * @p MPU_FN must take the form:
- *
- * @code{.c}
- *   #define MPU_FN(name, base, size, attr) ...
- * @endcode
- *
- * The 'name', 'base' and 'size' parameters are taken from the DT node.
- *
- * The 'zephyr,memory-region-mpu' enum property is passed as an extended token
- * to the MPU_FN macro using the 'attr' parameter, in the form
- * REGION_{attr}_ATTR.
- *
- * The following enums are supported for the 'zephyr,memory-region-mpu'
- * property:
- *
- *  - RAM
- *  - RAM_NOCACHE
- *  - FLASH
- *  - PPB
- *  - IO
- *
- * This means that usually the arch code would provide some macros or defines
- * with the same name of the extended property, that is:
- *
- *  - REGION_RAM_ATTR
- *  - REGION_RAM_NOCACHE_ATTR
- *  - REGION_FLASH_ATTR
- *  - REGION_PPB_ATTR
- *  - REGION_IO_ATTR
- *
- * Example devicetree fragment:
- *
- *     / {
- *             soc {
- *                     sram1: memory@2000000 {
- *                         zephyr,memory-region = "MY_NAME";
- *                         zephyr,memory-region-mpu = "RAM_NOCACHE";
- *                     };
- *             };
- *     };
- *
- * For detailed information about MPU region attribute define configuration refer
- * to the specific architecture MPU header.
- * For example: include/zephyr/arch/arm/aarch32/mpu/arm_mpu_v7m.h.
- *
- * The 'attr' parameter of the MPU_FN function will be the extended
- * 'REGION_RAM_NOCACHE_ATTR' token and the arch code will be usually
- * implementing a macro with the same name.
- *
- * Example:
- *
- * @code{.c}
- *
- *   #define REGION_RAM_NOCACHE_ATTR 0xAAAA
- *   #define REGION_RAM_ATTR         0xBBBB
- *   #define REGION_FLASH_ATTR       0xCCCC
- *
- *   #define MPU_FN(p_name, p_base, p_size, p_attr) \
- *       {                                          \
- *           .name = p_name,                        \
- *           .base = p_base,                        \
- *           .size = p_size,                        \
- *           .attr = p_attr,                        \
- *       }
- *
- *   static const struct arm_mpu_region mpu_regions[] = {
- *       ...
- *       LINKER_DT_REGION_MPU(MPU_FN)
- *       ...
- *   };
- * @endcode
- *
- */
-#define LINKER_DT_REGION_MPU(mpu_fn) _CHECK_APPLY_FN(_DT_COMPATIBLE, _EXPAND_MPU_FN, mpu_fn)
-
 #endif /* ZEPHYR_INCLUDE_LINKER_DEVICETREE_REGIONS_H_ */

samples/subsys/ipc/openamp/boards/mimxrt1160_evk_cm7.overlay

@@ -17,6 +17,6 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };

samples/subsys/ipc/openamp/boards/mimxrt1170_evk_cm7.overlay

@@ -17,6 +17,6 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };

samples/subsys/ipc/openamp/boards/mimxrt1170_evkb_cm7.overlay

@@ -17,6 +17,6 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };

samples/subsys/ipc/openamp/remote/boards/mimxrt1160_evk_cm4.overlay

@@ -33,7 +33,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };
 

samples/subsys/ipc/openamp/remote/boards/mimxrt1170_evk_cm4.overlay

@@ -33,7 +33,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };
 

samples/subsys/ipc/openamp/remote/boards/mimxrt1170_evkb_cm4.overlay

@@ -33,7 +33,7 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x202c0000 DT_SIZE_K(16)>;
 		zephyr,memory-region="OCRAM2_OVERLAY";
-		zephyr,memory-region-mpu = "IO";
+		zephyr,memory-attr = "IO";
 	};
 };
 

soc/arm/common/cortex_m/arm_mpu_regions.c

@@ -6,7 +6,7 @@
 
 #include <zephyr/sys/slist.h>
 #include <zephyr/arch/arm/aarch32/mpu/arm_mpu.h>
-#include <zephyr/linker/devicetree_regions.h>
+#include <zephyr/devicetree/memory-attr.h>
 
 #include "arm_mpu_mem_cfg.h"
 
@@ -31,7 +31,7 @@ static const struct arm_mpu_region mpu_regions[] = {
 #endif
 
 	/* DT-defined regions */
-	LINKER_DT_REGION_MPU(ARM_MPU_REGION_INIT)
+	DT_MEMORY_ATTR_APPLY(ARM_MPU_REGION_INIT)
 };
 
 const struct arm_mpu_config mpu_config = {

soc/arm/nxp_s32/s32k/mpu_regions.c

@@ -37,7 +37,7 @@ static struct arm_mpu_region mpu_regions[] = {
 #endif
 
 	/* DT-defined regions */
-	LINKER_DT_REGION_MPU(ARM_MPU_REGION_INIT)
+	DT_MEMORY_ATTR_APPLY(ARM_MPU_REGION_INIT)
 };
 
 const struct arm_mpu_config mpu_config = {

soc/arm/st_stm32/stm32h7/mpu_regions.c

@@ -5,7 +5,6 @@
  */
 
 #include <zephyr/devicetree.h>
-#include <zephyr/linker/devicetree_regions.h>
 #include "../../common/cortex_m/arm_mpu_mem_cfg.h"
 
 static const struct arm_mpu_region mpu_regions[] = {
@@ -32,7 +31,7 @@ static const struct arm_mpu_region mpu_regions[] = {
 #endif
 
 	/* DT-defined regions */
-	LINKER_DT_REGION_MPU(ARM_MPU_REGION_INIT)
+	DT_MEMORY_ATTR_APPLY(ARM_MPU_REGION_INIT)
 };
 
 const struct arm_mpu_config mpu_config = {

soc/arm64/arm/fvp_aemv8r/arm_mpu_regions.c

@@ -7,7 +7,7 @@
 
 #include <zephyr/arch/arm64/cortex_r/arm_mpu.h>
 #include <zephyr/linker/linker-defs.h>
-#include <zephyr/linker/devicetree_regions.h>
+#include <zephyr/devicetree/memory-attr.h>
 #include <zephyr/sys/util.h>
 
 static const struct arm_mpu_region mpu_regions[] = {
@@ -41,7 +41,7 @@ static const struct arm_mpu_region mpu_regions[] = {
 			 REGION_RAM_ATTR),
 
 	/* Extra regions defined in device tree */
-	LINKER_DT_REGION_MPU(MPU_REGION_ENTRY_FROM_DTS)
+	DT_MEMORY_ATTR_APPLY(MPU_REGION_ENTRY_FROM_DTS)
 };
 
 const struct arm_mpu_config mpu_config = {

tests/arch/arm/arm_mpu_regions/boards/mps2_an385.overlay

@@ -16,21 +16,21 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x20200000 0x100000>;
 		zephyr,memory-region = "SRAM_CACHE";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	sram_no_cache: memory@20300000 {
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x20300000 0x100000>;
 		zephyr,memory-region = "SRAM_NO_CACHE";
-		zephyr,memory-region-mpu = "RAM_NOCACHE";
+		zephyr,memory-attr = "RAM_NOCACHE";
 	};
 
 	sram_dtcm_fake: memory@abcdabcd {
 		compatible = "zephyr,memory-region", "arm,dtcm";
 		reg = <0xabcdabcd 0x100000>;
 		zephyr,memory-region = "SRAM_DTCM_FAKE";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	sram_no_mpu: memory@deaddead {

tests/drivers/adc/adc_dma/boards/nucleo_h743zi.overlay

@@ -22,7 +22,7 @@
 
 /* ADC driver expects a buffer in a non-cachable memory region */
 &sram4 {
-	zephyr,memory-region-mpu = "RAM_NOCACHE";
+	zephyr,memory-attr = "RAM_NOCACHE";
 };
 
 &dma1 {

tests/drivers/dma/chan_blen_transfer/boards/nucleo_h743zi.overlay

@@ -18,7 +18,7 @@ test_dma0: &dmamux1 {
  * to be non-cachable.
  */
 &sram4 {
-	zephyr,memory-region-mpu = "RAM_NOCACHE";
+	zephyr,memory-attr = "RAM_NOCACHE";
 };
 
 &bdma1 {

tests/drivers/dma/loop_transfer/boards/nucleo_h743zi.overlay

@@ -18,7 +18,7 @@ test_dma0: &dmamux1 {
  * to be non-cachable.
  */
 &sram4 {
-	zephyr,memory-region-mpu = "RAM_NOCACHE";
+	zephyr,memory-attr = "RAM_NOCACHE";
 };
 
 &bdma1 {

tests/kernel/mem_heap/shared_multi_heap/boards/mps2_an521.overlay

@@ -17,20 +17,20 @@
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x38100000 0x1000>;
 		zephyr,memory-region = "RES0";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 
 	res1: memory@38200000 {
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x38200000 0x2000>;
 		zephyr,memory-region = "RES1";
-		zephyr,memory-region-mpu = "RAM_NOCACHE";
+		zephyr,memory-attr = "RAM_NOCACHE";
 	};
 
 	res2: memory@38300000 {
 		compatible = "zephyr,memory-region", "mmio-sram";
 		reg = <0x38300000 0x3000>;
 		zephyr,memory-region = "RES2";
-		zephyr,memory-region-mpu = "RAM";
+		zephyr,memory-attr = "RAM";
 	};
 };

tests/kernel/mem_heap/shared_multi_heap/boards/qemu_cortex_a53.overlay

@@ -10,14 +10,14 @@
 			compatible = "zephyr,memory-region", "mmio-sram";
 			reg = <0x0 0x42000000 0x0 0x1000>;
 			zephyr,memory-region = "RES0";
-			zephyr,memory-region-mpu = "RAM";
+			zephyr,memory-attr = "RAM";
 		};
 
 		res1: memory@43000000 {
 			compatible = "zephyr,memory-region", "mmio-sram";
 			reg = <0x0 0x43000000 0x0 0x2000>;
 			zephyr,memory-region = "RES1";
-			zephyr,memory-region-mpu = "RAM_NOCACHE";
+			zephyr,memory-attr = "RAM_NOCACHE";
 		};
 
 		res_no_mpu: memory@45000000 {
@@ -30,7 +30,7 @@
 			compatible = "zephyr,memory-region", "mmio-sram";
 			reg = <0x0 0x44000000 0x0 0x3000>;
 			zephyr,memory-region = "RES2";
-			zephyr,memory-region-mpu = "RAM";
+			zephyr,memory-attr = "RAM";
 		};
 	};
 };

tests/kernel/mem_heap/shared_multi_heap/src/main.c

@@ -27,7 +27,7 @@ struct region_map {
 		.region = {								\
 			.addr = (uintptr_t) DT_INST_REG_ADDR(n),			\
 			.size = DT_INST_REG_SIZE(n),					\
-			.attr = DT_INST_ENUM_IDX_OR(n, zephyr_memory_region_mpu,	\
+			.attr = DT_INST_ENUM_IDX_OR(n, zephyr_memory_attr,		\
 						    SMH_REG_ATTR_NUM),			\
 		},									\
 	},
@@ -103,7 +103,7 @@ static void fill_multi_heap(void)
 	for (size_t idx = 0; idx < DT_NUM_INST_STATUS_OKAY(DT_DRV_COMPAT); idx++) {
 		reg_map = &map[idx];
 
-		/* zephyr,memory-region-mpu property not found. Skip it. */
+		/* zephyr,memory-attr property not found. Skip it. */
 		if (reg_map->region.attr == SMH_REG_ATTR_NUM) {
 			continue;
 		}