boards: renesas: dts: Add overlay files to support the MEMC (b820cc29) · Commits · Wenxi XU / zephyr

In order to avoid defining almost the same overlays in the available sample codes, tests and user applications, a common overlay file per memory type is demonstrated under the boards dts folder. Currently only the PSRAM interface is supported and the APS6404L PSRAM QSPI memory device is demonstrated. In doing so, an application code will only have to define another overlay file explicitly, under application's board folder, to overwrite the default QSPI controller's settings. In either case, users should explicitly invoke the requested overlay files at 'west build' invokation via the DTC_OVERLAY_FILE system variable. Signed-off-by:

Ioannis Karachalios <ioannis.karachalios.px@renesas.com>

boards/renesas/da1469x_dk_pro/dts/da1469x_dk_pro_psram.overlay

0 → 100644

+39 −0

Original line number	Original line	Diff line number	Diff line
			/*
			* Copyright (c) 2024 Renesas Electronics Corporation
			*
			* SPDX-License-Identifier: Apache-2.0
			*/

			/ {
			aliases {
			sram-ext = &memc;
			};
			};

			/* QSPIC settings for the APS6404L-3SQR QSPI PSRAM memory in QPI mode. */
			&memc {
			status = "okay";
			is-ram;
			dev-size = <DT_SIZE_M(64)>;
			dev-type = <0x5D>;
			dev-id = <0x0D>;
			dev-density = <0xE040>;
			reset-delay-us = <50>;
			read-cs-idle-min-ns = <18>;
			tcem-max-us = <2>;
			enter-qpi-mode;
			enter-qpi-cmd = <0x35>;
			extra-byte-enable;
			extra-byte = <0x0>;
			dummy-bytes-count = "dummy-bytes-count2";
			read-cmd = <0xEB>;
			write-cmd = <0x38>;
			rx-inst-mode = "quad-spi";
			rx-addr-mode = "quad-spi";
			rx-data-mode = "quad-spi";
			rx-dummy-mode = "quad-spi";
			rx-extra-mode = "quad-spi";
			tx-inst-mode = "quad-spi";
			tx-addr-mode = "quad-spi";
			tx-data-mode = "quad-spi";
			};

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