Patchwork [34/34] ARM: dts: r8a7744-iwg20m: Add SPI NOR support

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Submitter Simon Horman
Date Dec. 6, 2018, 9:58 p.m.
Message ID <e259e04748e2798a747d9c363ded50514b15a7b9.1544125558.git.horms+renesas@verge.net.au>
Download mbox | patch
Permalink /patch/674663/
State New
Headers show

Comments

Simon Horman - Dec. 6, 2018, 9:58 p.m.
From: Biju Das <biju.das@bp.renesas.com>

Add support for the SPI NOR device used to boot up the system
to the iWave RZ/G1N Qseven System On Module DT.

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/boot/dts/r8a7744-iwg20m.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

Patch

diff --git a/arch/arm/boot/dts/r8a7744-iwg20m.dtsi b/arch/arm/boot/dts/r8a7744-iwg20m.dtsi
index 503583e2c852..82ee3c1140ef 100644
--- a/arch/arm/boot/dts/r8a7744-iwg20m.dtsi
+++ b/arch/arm/boot/dts/r8a7744-iwg20m.dtsi
@@ -36,6 +36,11 @@ 
 		function = "mmc";
 	};
 
+	qspi_pins: qspi {
+		groups = "qspi_ctrl", "qspi_data2";
+		function = "qspi";
+	};
+
 	sdhi0_pins: sd0 {
 		groups = "sdhi0_data4", "sdhi0_ctrl";
 		function = "sdhi0";
@@ -53,6 +58,27 @@ 
 	status = "okay";
 };
 
+&qspi {
+	pinctrl-0 = <&qspi_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+
+	/* WARNING - This device contains the bootloader. Handle with care. */
+	flash: flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <2>;
+		spi-rx-bus-width = <2>;
+		m25p,fast-read;
+		spi-cpol;
+		spi-cpha;
+	};
+};
+
 &sdhi0 {
 	pinctrl-0 = <&sdhi0_pins>;
 	pinctrl-names = "default";