Add support ospi driver for Renesas RA8 devices

boards/renesas/ek_ra8d1/doc/index.rst

@@ -123,6 +123,8 @@ The below features are currently supported on Zephyr OS for EK-RA8D1 board:
 +--------------+------------+-----------------------------------+
 | SDHC         | on-chip    | sdhc                              |
 +--------------+------------+-----------------------------------+
+| OSPI         | on-chip    | ospi flash                        |
++--------------+------------+-----------------------------------+
 
 **Note:**
 

boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi

@@ -261,4 +261,22 @@
 			drive-strength = "highspeed-high";
 		};
 	};
+
+	ospi0_default: ospi0_default {
+		group1 {
+			/* sclk dqs sio0-7 */
+			psels = <RA_PSEL(RA_PSEL_OSPI, 8, 8)>, <RA_PSEL(RA_PSEL_OSPI, 8, 1)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 0)>, <RA_PSEL(RA_PSEL_OSPI, 8, 3)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 3)>, <RA_PSEL(RA_PSEL_OSPI, 1, 1)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 2)>, <RA_PSEL(RA_PSEL_OSPI, 8, 0)>,
+			<RA_PSEL(RA_PSEL_OSPI, 8, 2)>, <RA_PSEL(RA_PSEL_OSPI, 8, 4)>;
+			drive-strength = "highspeed-high";
+		};
+		group2 {
+			/* cs1 rst ecsint1 */
+			psels = <RA_PSEL(RA_PSEL_OSPI, 1, 4)>, <RA_PSEL(RA_PSEL_OSPI, 1, 6)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 5)>;
+			drive-strength = "high";
+		};
+	};
 };

boards/renesas/ek_ra8d1/ek_ra8d1.dts

@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include <renesas/ra/ra8/r7fa8d1bhecbd.dtsi>
+#include <zephyr/dt-bindings/flash_controller/xspi.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input-event-codes.h>
 #include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
@@ -111,6 +112,17 @@
 	};
 };
 
+&pll2 {
+	status = "okay";
+	clocks = <&xtal>;
+	div = <2>;
+	mul = <80 0>;
+	pll2p {
+		status = "okay";
+		freq = <DT_FREQ_M(400)>;
+		div = <2>;
+	};
+};
 
 &sciclk {
 	clocks = <&pllp>;
@@ -130,6 +142,12 @@
 	status = "okay";
 };
 
+&octaspiclk {
+	clocks = <&pll2p>;
+	div = <2>;
+	status = "okay";
+};
+
 &ioport0 {
 	status = "okay";
 };
@@ -300,3 +318,43 @@ zephyr_mipi_dsi: &mipi_dsi {};
 renesas_mipi_i2c: &iic1{};
 
 pmod_sd_shield: &sdhc1 {};
+
+&ospi0 {
+	pinctrl-0 = <&ospi0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	s28hl512t: s28hl512t@90000000 {
+		compatible = "renesas,ra-ospi-b-nor";
+		protocol-mode = <XSPI_OCTO_MODE>;
+		data-rate = <XSPI_DTR_TRANSFER>;
+		ospi-max-frequency = <DT_FREQ_M(200)>;
+		reg = <0x90000000 DT_SIZE_M(64)>;
+		write-block-size = <1>;
+		pages_layout: pages_layout {
+			pages_layout_4k: pages_layout_4k {
+				pages-count = <32>;
+				pages-size = <DT_SIZE_K(4)>;
+			};
+			pages_layout_128k: pages_layout_128k {
+				pages-count = <1>;
+				pages-size = <DT_SIZE_K(128)>;
+			};
+			pages_layout_256k: pages_layout_256k {
+				pages-count = <255>;
+				pages-size = <DT_SIZE_K(256)>;
+			};
+		};
+		status = "okay";
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "nor";
+				reg = <0x00000000 DT_SIZE_M(64)>;
+			};
+		};
+	};
+};

boards/renesas/ek_ra8m1/doc/index.rst

@@ -120,6 +120,8 @@ The below features are currently supported on Zephyr OS for EK-RA8M1 board:
 +-----------+------------+----------------------+
 | SDHC      | on-chip    | sdhc                 |
 +-----------+------------+----------------------+
+| OSPI      | on-chip    | ospi flash           |
++-----------+------------+----------------------+
 
 **Note:**
 

boards/renesas/ek_ra8m1/ek_ra8m1-pinctrl.dtsi

@@ -138,4 +138,22 @@
 			drive-strength = "highspeed-high";
 		};
 	};
+
+	ospi0_default: ospi0_default {
+		group1 {
+			/* sclk dqs sio0-7 */
+			psels = <RA_PSEL(RA_PSEL_OSPI, 8, 8)>, <RA_PSEL(RA_PSEL_OSPI, 8, 1)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 0)>, <RA_PSEL(RA_PSEL_OSPI, 8, 3)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 3)>, <RA_PSEL(RA_PSEL_OSPI, 1, 1)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 2)>, <RA_PSEL(RA_PSEL_OSPI, 8, 0)>,
+			<RA_PSEL(RA_PSEL_OSPI, 8, 2)>, <RA_PSEL(RA_PSEL_OSPI, 8, 4)>;
+			drive-strength = "highspeed-high";
+		};
+		group2 {
+			/* cs1 rst ecsint1 */
+			psels = <RA_PSEL(RA_PSEL_OSPI, 1, 4)>, <RA_PSEL(RA_PSEL_OSPI, 1, 6)>,
+			<RA_PSEL(RA_PSEL_OSPI, 1, 5)>;
+			drive-strength = "high";
+		};
+	};
 };

boards/renesas/ek_ra8m1/ek_ra8m1.dts

@@ -7,6 +7,7 @@
 
 #include <renesas/ra/ra8/r7fa8m1ahecbd.dtsi>
 #include <dt-bindings/gpio/gpio.h>
+#include <zephyr/dt-bindings/flash_controller/xspi.h>
 #include <zephyr/dt-bindings/adc/adc.h>
 #include <zephyr/dt-bindings/input/input-event-codes.h>
 #include "ek_ra8m1-pinctrl.dtsi"
@@ -148,6 +149,17 @@
 	};
 };
 
+&pll2 {
+	status = "okay";
+	clocks = <&xtal>;
+	div = <2>;
+	mul = <80 0>;
+	pll2p {
+		status = "okay";
+		freq = <DT_FREQ_M(400)>;
+		div = <2>;
+	};
+};
 
 &sciclk {
 	clocks = <&pllp>;
@@ -161,6 +173,12 @@
 	status = "okay";
 };
 
+&octaspiclk {
+	clocks = <&pll2p>;
+	div = <2>;
+	status = "okay";
+};
+
 &ioport0 {
 	status = "okay";
 };
@@ -349,3 +367,43 @@ pmod_header: &pmod1_header {};
 };
 
 pmod_sd_shield: &sdhc0 {};
+
+&ospi0 {
+	pinctrl-0 = <&ospi0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	s28hl512t: s28hl512t@90000000 {
+		compatible = "renesas,ra-ospi-b-nor";
+		protocol-mode = <XSPI_OCTO_MODE>;
+		data-rate = <XSPI_DTR_TRANSFER>;
+		ospi-max-frequency = <DT_FREQ_M(200)>;
+		reg = <0x90000000 DT_SIZE_M(64)>;
+		write-block-size = <1>;
+		pages_layout: pages_layout {
+			pages_layout_4k: pages_layout_4k {
+				pages-count = <32>;
+				pages-size = <DT_SIZE_K(4)>;
+			};
+			pages_layout_128k: pages_layout_128k {
+				pages-count = <1>;
+				pages-size = <DT_SIZE_K(128)>;
+			};
+			pages_layout_256k: pages_layout_256k {
+				pages-count = <255>;
+				pages-size = <DT_SIZE_K(256)>;
+			};
+		};
+		status = "okay";
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "nor";
+				reg = <0x00000000 DT_SIZE_M(64)>;
+			};
+		};
+	};
+};

drivers/flash/CMakeLists.txt

@@ -158,3 +158,4 @@ if(CONFIG_RA_FLASH_HP)
   zephyr_library_sources(flash_hp_ra.c)
   zephyr_library_sources_ifdef(CONFIG_FLASH_EX_OP_ENABLED flash_hp_ra_ex_op.c)
 endif()
+zephyr_library_sources_ifdef(CONFIG_FLASH_OSPI_B_RENESAS_RA flash_renesas_ra_ospi_b.c)

drivers/flash/Kconfig

@@ -191,6 +191,7 @@ source "drivers/flash/Kconfig.numaker"
 source "drivers/flash/Kconfig.numaker_rmc"
 source "drivers/flash/Kconfig.nxp_s32"
 source "drivers/flash/Kconfig.renesas_ra"
+source "drivers/flash/Kconfig.renesas_ra_flash_ospi_b"
 source "drivers/flash/Kconfig.rpi_pico"
 source "drivers/flash/Kconfig.rv32m1"
 source "drivers/flash/Kconfig.sam"

drivers/flash/Kconfig.renesas_ra_flash_ospi_b

@@ -0,0 +1,18 @@
+# Renesas RA Family
+
+# Copyright (c) 2024 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config FLASH_OSPI_B_RENESAS_RA
+	bool "Renesas RA Octal-SPI driver"
+	default y
+	depends on DT_HAS_RENESAS_RA_OSPI_B_NOR_ENABLED
+	select FLASH_HAS_DRIVER_ENABLED
+	select FLASH_HAS_PAGE_LAYOUT
+	select FLASH_HAS_EXPLICIT_ERASE
+	select USE_RA_FSP_OSPI_B_NOR_FLASH
+	select FLASH_JESD216
+	select FLASH_HAS_EX_OP
+	select PINCTRL
+	help
+	  Enable Octal-SPI Nor flash driver for RA series