Commit fc7f54fb authored by Lad Prabhakar's avatar Lad Prabhakar Committed by Geert Uytterhoeven
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ARM: dts: r8a7742-iwg21m: Add SPI NOR support 



Add support for the SPI NOR device used to boot up the system
to the System on Module DT.

Signed-off-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: default avatarChris Paterson <Chris.Paterson2@renesas.com>
Link: https://lore.kernel.org/r/20200825085435.8744-1-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 7da4d2a8

arch/arm/boot/dts/r8a7742-iwg21m.dtsi

+51 −0
Original line number Diff line number Diff line
@@ -35,6 +35,16 @@ &extal_clk { 
	clock-frequency = <20000000>;

};



&gpio0 {

	/* GP0_18 set low to select QSPI. Doing so will disable VIN2 */

	qspi_en {

		gpio-hog;

		gpios = <18 GPIO_ACTIVE_HIGH>;

		output-low;

		line-name = "QSPI_EN";

	};

};



&i2c0 {

	pinctrl-0 = <&i2c0_pins>;

	pinctrl-names = "default";
@@ -70,4 +80,45 @@ mmc1_pins: mmc1 { 
		groups = "mmc1_data4", "mmc1_ctrl";

		function = "mmc1";

	};



	qspi_pins: qspi {

		groups = "qspi_ctrl", "qspi_data2";

		function = "qspi";

	};

};



&qspi {

	pinctrl-0 = <&qspi_pins>;

	pinctrl-names = "default";



	status = "okay";



	flash: flash@0 {

		compatible = "sst,sst25vf016b", "jedec,spi-nor";

		reg = <0>;

		spi-max-frequency = <50000000>;

		m25p,fast-read;

		spi-cpol;

		spi-cpha;



		partitions {

			compatible = "fixed-partitions";

			#address-cells = <1>;

			#size-cells = <1>;



			partition@0 {

				label = "bootloader";

				reg = <0x00000000 0x000c0000>;

				read-only;

			};

			partition@c0000 {

				label = "env";

				reg = <0x000c0000 0x00002000>;

			};

			partition@c2000 {

				label = "user";

				reg = <0x000c2000 0x0013e000>;

			};

		};

	};

};