sandbox: dts: Add a SPI device and cros_ec device

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.

Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index 797478a2c7f661294bb462d56d71048459652cd7..76147154c22366b7f70e5a95e83c8ea8ee3dfbe1 100644 (file)
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -1,6 +1,9 @@
 /dts-v1/;
 
 / {
+       #address-cells = <1>;
+       #size-cells = <0>;
+
        chosen {
                stdout-path = "/serial";
        };
@@ -131,4 +134,27 @@
                num-gpios = <20>;
        };
 
+       spi@0 {
+               #address-cells = <1>;
+               #size-cells = <0>;
+               reg = <0>;
+               compatible = "sandbox,spi";
+               cs-gpios = <0>, <&gpio_a 0>;
+               flash@0 {
+                       reg = <0>;
+                       compatible = "spansion,m25p16", "sandbox,spi-flash";
+                       spi-max-frequency = <40000000>;
+                       sandbox,filename = "spi.bin";
+               };
+       };
+
+       cros-ec@0 {
+               compatible = "google,cros-ec";
+               #address-cells = <1>;
+               #size-cells = <1>;
+               firmware_storage_spi: flash@0 {
+                       reg = <0 0x400000>;
+               };
+       };
+
 };

diff --git a/doc/device-tree-bindings/mtd/spi/spi-flash.txt b/doc/device-tree-bindings/mtd/spi/spi-flash.txt
new file mode 100644 (file)
index 0000000..85522d8
--- /dev/null
+++ b/doc/device-tree-bindings/mtd/spi/spi-flash.txt
@@ -0,0 +1,25 @@
+* MTD SPI driver for 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 that the DT binding is not U-Boot-only, but in case of
+               U-Boot, see spi_flash_params_table table in
+               drivers/mtd/spi/sf_params.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:
+ - memory-map : Address and size of the flash, if memory mapped. This may
+                apply to Intel chipsets, which tend to memory-map flash.
+
+Example:
+
+       flash: m25p80@0 {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               compatible = "spansion,m25p80";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+       };