boards: nxp: frdm_rw612: add aps6404l PSRAM

Add entry for aps6404l PSRAM on frdm_rw612 board

Signed-off-by: David Missael Maciel <[email protected]>

Author: davidmissael

boards/nxp/frdm_rw612/frdm_rw612.dts

@@ -56,6 +56,13 @@
 
 &flexspi {
 	status = "okay";
+	ahb-bufferable;
+	ahb-prefetch;
+	ahb-cacheable;
+	ahb-read-addr-opt;
+	ahb-boundary = "1024";
+	rx-clock-source = <1>;
+	rx-clock-source-b = <1>;
 	/* Winbond external flash */
 	w25q512jvfiq: w25q512jvfiq@0 {
 		compatible = "nxp,imx-flexspi-nor";
@@ -66,6 +73,25 @@
 		write-block-size = <1>;
 		spi-max-frequency = <133000000>;
 	};
+	aps6404l: aps6404l@2 {
+			compatible = "nxp,imx-flexspi-aps6404l";
+			/* APS6404L is 8MB, 64MBit pSRAM */
+			size = <DT_SIZE_M(8 * 8)>;
+			reg = <2>;
+			spi-max-frequency = <109000000>;
+			/* PSRAM cannot be enabled while board is in default XIP
+			 * configuration, as it will conflict with flash chip.
+			 */
+			status = "disabled";
+			cs-interval-unit = <1>;
+			cs-interval = <2>;
+			cs-hold-time = <3>;
+			cs-setup-time = <3>;
+			data-valid-time = <6>;
+			column-space = <0>;
+			ahb-write-wait-unit = <2>;
+			ahb-write-wait-interval = <0>;
+	};
 };
 
 &hci {