linux-kernel - [PATCH 3/3] ARM: dts: keystone-k2g-evm: add bindings for SPI NOR flash

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Message-ID: <20170908204638.13149-4-fcooper@ti.com>
Date:   Fri, 8 Sep 2017 15:46:38 -0500
From:   Franklin S Cooper Jr <fcooper@...com>
To:     <broonie@...nel.org>, <robh+dt@...nel.org>, <mark.rutland@....com>,
        <ssantosh@...nel.org>, <linux@...linux.org.uk>,
        <linux-spi@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     Murali Karicheri <m-karicheri2@...com>,
        Franklin S Cooper Jr <fcooper@...com>
Subject: [PATCH 3/3] ARM: dts: keystone-k2g-evm: add bindings for SPI NOR flash

From: Murali Karicheri <m-karicheri2@...com>

K2G EVM has n25q128a13 SPI NOR flash on SPI1. Enable SPI1 in the DT
node as well as add a subnode for the SPI NOR.

Signed-off-by: Murali Karicheri <m-karicheri2@...com>
Signed-off-by: Franklin S Cooper Jr <fcooper@...com>
---
 arch/arm/boot/dts/keystone-k2g-evm.dts | 37 ++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/boot/dts/keystone-k2g-evm.dts b/arch/arm/boot/dts/keystone-k2g-evm.dts
index f462f10..d5c43c7 100644
--- a/arch/arm/boot/dts/keystone-k2g-evm.dts
+++ b/arch/arm/boot/dts/keystone-k2g-evm.dts
@@ -81,6 +81,16 @@
 			K2G_CORE_IOPAD(0x1110) (BUFFER_CLASS_B | PIN_PULLUP | MUX_MODE0)	/* mmc1_cmd.mmc1_cmd */
 		>;
 	};
+
+	spi1_pins: pinmux_spi1_pins {
+		pinctrl-single,pins = <
+			K2G_CORE_IOPAD(0x11a4) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_scs0.spi1_scs0 */
+			K2G_CORE_IOPAD(0x11ac) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_clk.spi1_clk */
+			K2G_CORE_IOPAD(0x11b0) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_miso.spi1_miso */
+			K2G_CORE_IOPAD(0x11b4) (BUFFER_CLASS_B | PULL_DISABLE | MUX_MODE0)	/* spi1_mosi.spi1_mosi */
+		>;
+	};
+
 };
 
 &uart0 {
@@ -112,3 +122,30 @@
 	memory-region = <&dsp_common_memory>;
 	status = "okay";
 };
+
+&spi1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi1_pins>;
+	status = "okay";
+
+	spi_nor: flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <5000000>;
+		m25p,fast-read;
+		reg = <0>;
+
+		partition@0 {
+			label = "u-boot-spl";
+			reg = <0x0 0x100000>;
+			read-only;
+		};
+
+		partition@1 {
+			label = "misc";
+			reg = <0x100000 0xf00000>;
+		};
+	};
+};
+
-- 
2.9.4.dirty