[U-Boot] [PATCH 03/25] sandbox: dts: Add a SPI device and cros_ec device

[Simon Glass]

Add a SPI device which can be used for testing SPI flash features in
sandbox.

Also add a cros_ec device since with driver model the Chrome OS EC
emulation will not otherwise be available.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/sandbox/dts/sandbox.dts                | 25 +++++++++++++++++++++++++
 doc/device-tree-bindings/mtd/spi/m25p80.txt | 29 +++++++++++++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 doc/device-tree-bindings/mtd/spi/m25p80.txt

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index daf5e73..fad1fae 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -1,6 +1,9 @@
 /dts-v1/;
 
 / {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
 	aliases {
 		console = "/serial";
 	};
@@ -131,5 +134,27 @@
 		num-gpios = <20>;
 	};
 
+	spi at 0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0>;
+		compatible = "sandbox,spi";
+		cs-gpios = <0>, <&gpio_a 0>;
+		flash at 0 {
+			reg = <0>;
+			compatible = "spansion,m25p16", "sandbox,spi-flash";
+			spi-max-frequency = <40000000>;
+			sandbox,filename = "spi.bin";
+		};
+	};
+
+	cros-ec at 0 {
+		compatible = "google,cros-ec";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		firmware_storage_spi: flash at 0 {
+			reg = <0 0x400000>;
+		};
+	};
 
 };
diff --git a/doc/device-tree-bindings/mtd/spi/m25p80.txt b/doc/device-tree-bindings/mtd/spi/m25p80.txt
new file mode 100644
index 0000000..6d3d576
--- /dev/null
+++ b/doc/device-tree-bindings/mtd/spi/m25p80.txt
@@ -0,0 +1,29 @@
+* MTD SPI driver for ST M25Pxx (and similar) serial flash chips
+
+Required properties:
+- #address-cells, #size-cells : Must be present if the device has sub-nodes
+  representing partitions.
+- compatible : Should be the manufacturer and the name of the chip. Bear in mind
+               the DT binding is not Linux-only, but in case of Linux, see the
+               "m25p_ids" table in drivers/mtd/devices/m25p80.c for the list of
+               supported chips.
+- reg : Chip-Select number
+- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
+
+Optional properties:
+- m25p,fast-read : Use the "fast read" opcode to read data from the chip instead
+                   of the usual "read" opcode. This opcode is not supported by
+                   all chips and support for it can not be detected at runtime.
+                   Refer to your chips' datasheet to check if this is supported
+                   by your chip.
+
+Example:
+
+	flash: m25p80 at 0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "spansion,m25p80";
+		reg = <0>;
+		spi-max-frequency = <40000000>;
+		m25p,fast-read;
+	};
-- 
2.0.0.526.g5318336