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[05/28] ARM: shmobile: silk: add QSPI DT support

Message ID 0ebdbc505b620ab4397c3105d36a5383fb16b151.1444182812.git.horms+renesas@verge.net.au (mailing list archive)
State New, archived
Headers show

Commit Message

Simon Horman Oct. 7, 2015, 1:57 a.m. UTC 
From: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>

Define the SILK board dependent part of the QSPI device node.
Add device nodes  for Spansion  S25FL512S SPI flash and MTD partitions on it.

Based on the original patch by Vladimir Barinov
<vladimir.barinov@cogentembedded.com>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 arch/arm/boot/dts/r8a7794-silk.dts | 40 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
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Patch

diff --git a/arch/arm/boot/dts/r8a7794-silk.dts b/arch/arm/boot/dts/r8a7794-silk.dts
index d4dd5a30ccdf..f49bc00738a3 100644
--- a/arch/arm/boot/dts/r8a7794-silk.dts
+++ b/arch/arm/boot/dts/r8a7794-silk.dts
@@ -65,6 +65,11 @@ 
 		renesas,groups = "mmc_data8", "mmc_ctrl";
 		renesas,function = "mmc";
 	};
+
+	qspi_pins: spi0 {
+		renesas,groups = "qspi_ctrl", "qspi_data4";
+		renesas,function = "qspi";
+	};
 };
 
 &scif2 {
@@ -100,3 +105,38 @@ 
 	non-removable;
 	status = "okay";
 };
+
+&qspi {
+	pinctrl-0 = <&qspi_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spansion,s25fl512s", "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <30000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+		spi-cpol;
+		spi-cpha;
+		m25p,fast-read;
+
+		partition@0 {
+			label = "loader";
+			reg = <0x00000000 0x00040000>;
+			read-only;
+		};
+		partition@40000 {
+			label = "user";
+			reg = <0x00040000 0x00400000>;
+			read-only;
+		};
+		partition@440000 {
+			label = "flash";
+			reg = <0x00440000 0x03bc0000>;
+		};
+	};
+};