linux-kernel - [PATCH] arm64: dts: renesas: rzg2l-smarc-som: Enable serial NOR flash

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Date:   Fri, 19 Nov 2021 12:37:10 +0000
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-renesas-soc@...r.kernel.org
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] arm64: dts: renesas: rzg2l-smarc-som: Enable serial NOR flash

Enable mt25qu512a flash connected to QSPI0.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
---
 .../boot/dts/renesas/rzg2l-smarc-som.dtsi     | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
index 7e84a29dddfa..e53c17954566 100644
--- a/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi
@@ -178,6 +178,18 @@
 		line-name = "gpio_sd0_pwr_en";
 	};
 
+	qspi_pins0: qspi0 {
+		qspi0-data {
+			pins = "QSPI0_IO0", "QSPI0_IO1", "QSPI0_IO2", "QSPI0_IO3";
+			power-source  = <1800>;
+		};
+
+		qspi0-ctrl {
+			pins = "QSPI0_SPCLK", "QSPI0_SSL", "QSPI_RESET#";
+			power-source  = <1800>;
+		};
+	};
+
 	/*
 	 * SD0 device selection is XOR between GPIO_SD0_DEV_SEL and SW1[2]
 	 * The below switch logic can be used to select the device between
@@ -243,6 +255,34 @@
 	};
 };
 
+&sbc {
+	pinctrl-0 = <&qspi_pins0>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	flash@0 {
+		compatible = "micron,mt25qu512a", "jedec,spi-nor";
+		reg = <0>;
+		m25p,fast-read;
+		spi-max-frequency = <50000000>;
+		spi-rx-bus-width = <4>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			boot@0 {
+				reg = <0x00000000 0x2000000>;
+				read-only;
+			};
+			user@...0000 {
+				reg = <0x2000000 0x2000000>;
+			};
+		};
+	};
+};
+
 #if SDHI
 &sdhi0 {
 	pinctrl-0 = <&sdhi0_pins>;
-- 
2.17.1