soc/gr716a: Enable SPIMCTRL support on LEON GR716A

GR716A has two SPIMCTRL SPI controllers.

This adds the SPIMCTRL description to the DTS and makes the SPI
option available in the kernel configuration.

Signed-off-by: Martin Åberg <martin.aberg@gaisler.com>

boards/sparc/gr716a_mini/gr716a_mini.dts

@@ -6,11 +6,15 @@
 
 /dts-v1/;
 
+#include <mem.h>
 #include <gaisler/gr716a.dtsi>
 
 / {
 	model = "GR716-MINI Development Board";
 	compatible = "gaisler,gr716a-mini";
+	aliases {
+		spi-flash0 = &flash0;
+	};
 	chosen {
 		zephyr,console = &uart0;
 		zephyr,shell-uart = &uart0;
@@ -21,3 +25,15 @@
 &uart0 {
 	status = "okay";
 };
+
+&spim0 {
+	status = "okay";
+	/* 256 Mbit SPI flash MX25L25635FZ2I-10G in 8 pin WSON package */
+	flash0: flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		size = <DT_SIZE_M(256)>;
+		jedec-id = [c2 20 19];
+	};
+};

boards/sparc/gr716a_mini/gr716a_mini.yaml

@@ -9,6 +9,7 @@ toolchain:
   - xtools
 supported:
   - netif
+  - spi
 testing:
   ignore_tags:
     - net

dts/sparc/gaisler/gr716a.dtsi

@@ -89,5 +89,23 @@
 			reg = <0x80305000 0x100>;
 			status = "disabled";
 		};
+
+		spim0: spi@fff00100 {
+			compatible = "gaisler,spimctrl";
+			reg = <0xfff00100 0x100>;
+			interrupts = <2 0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		spim1: spi@fff00200 {
+			compatible = "gaisler,spimctrl";
+			reg = <0xfff00200 0x100>;
+			interrupts = <2 0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
 	};
 };

soc/sparc/gr716a/Kconfig.defconfig

@@ -13,4 +13,17 @@ config SYS_CLOCK_HW_CYCLES_PER_SEC
 	int
 	default 50000000
 
+if FLASH
+
+config SPI
+	default y
+
+config SPI_NOR
+	default y
+
+config SPI_GRLIB_SPIMCTRL
+	default y
+
+endif
+
 endif