drivers: ipc: Enable messaging unit driver for iMX.RT multicore SOCs

Enable MU messaging unit driver for RT11xx socs.

Signed-off-by: Daniel DeGrasse <[email protected]>

Author: danieldegrasse

drivers/ipm/Kconfig.imx

@@ -17,8 +17,8 @@ config IPM_IMX
 
 config IPM_IMX_REV2
 	bool "IMX IPM driver (rev 2)"
-	depends on DT_HAS_NXP_IMX_MU_ENABLED
-	depends on !IPM_IMX
+	default y
+	depends on DT_HAS_NXP_IMX_MU_REV2_ENABLED
 	help
 	  Rev 2 driver for NXP i.MX messaging unit (MCUX-based)
 

drivers/ipm/ipm_imx.c

@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#define DT_DRV_COMPAT nxp_imx_mu
 
 #include <errno.h>
 #include <string.h>
@@ -13,8 +12,10 @@
 #include <zephyr/drivers/ipm.h>
 #include <zephyr/irq.h>
 #if IS_ENABLED(CONFIG_IPM_IMX_REV2)
+#define DT_DRV_COMPAT nxp_imx_mu_rev2
 #include "fsl_mu.h"
 #else
+#define DT_DRV_COMPAT nxp_imx_mu
 #include <mu_imx.h>
 #endif
 

dts/arm/nxp/nxp_rt11xx_cm4.dtsi

@@ -52,6 +52,13 @@
 			gpio-controller;
 			#gpio-cells = <2>;
 		};
+
+		mailbox_b: mailbox@40c4c000 {
+			compatible = "nxp,imx-mu-rev2";
+			reg = <0x40c4c000 0x4000>;
+			interrupts = <118 0>;
+			rdc = <0>;
+		};
 	};
 };
 

dts/arm/nxp/nxp_rt11xx_cm7.dtsi

@@ -75,6 +75,13 @@
 			gpio-controller;
 			#gpio-cells = <2>;
 		};
+
+		mailbox_a: mailbox@40c48000 {
+			compatible = "nxp,imx-mu-rev2";
+			reg = <0x40c48000 0x4000>;
+			interrupts = <118 0>;
+			rdc = <0>;
+		};
 	};
 };
 

dts/bindings/arm/nxp,imx-mu-rev2.yaml

@@ -0,0 +1,20 @@
+# Copyright (c) 2018, NXP
+# SPDX-License-Identifier: Apache-2.0
+
+description: i.MX Messaging Unit
+
+compatible: "nxp,imx-mu-rev2"
+
+include: base.yaml
+
+properties:
+  reg:
+      required: true
+
+  interrupts:
+      required: true
+
+  rdc:
+     type: int
+     required: true
+     description: Set the RDC permission for this peripheral