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>

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>
Simon Glass
1 parent 73e256c2ac
Showing 2 changed files with 51 additions and 0 deletions Side-by-side Diff
arch/sandbox/dts/sandbox.dts
doc/device-tree-bindings/mtd/spi/spi-flash.txt
 /dts-v1/;
  
 / {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
 	chosen {
 		stdout-path = "/serial";
 	};
@@ -129,6 +132,29 @@
 		#gpio-cells = <1>;
 		gpio-bank-name = "a";
 		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>;
+		};
 	};
  
 };
+* 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>;
+	};
1	1	/dts-v1/;
2	2
3	3	/ {
	4	+ #address-cells = <1>;
	5	+ #size-cells = <0>;
	6	+
4	7	chosen {
5	8	stdout-path = "/serial";
6	9	};
...	...	@@ -129,6 +132,29 @@
129	132	#gpio-cells = <1>;
130	133	gpio-bank-name = "a";
131	134	num-gpios = <20>;
	135	+ };
	136	+
	137	+ spi@0 {
	138	+ #address-cells = <1>;
	139	+ #size-cells = <0>;
	140	+ reg = <0>;
	141	+ compatible = "sandbox,spi";
	142	+ cs-gpios = <0>, <&gpio_a 0>;
	143	+ flash@0 {
	144	+ reg = <0>;
	145	+ compatible = "spansion,m25p16", "sandbox,spi-flash";
	146	+ spi-max-frequency = <40000000>;
	147	+ sandbox,filename = "spi.bin";
	148	+ };
	149	+ };
	150	+
	151	+ cros-ec@0 {
	152	+ compatible = "google,cros-ec";
	153	+ #address-cells = <1>;
	154	+ #size-cells = <1>;
	155	+ firmware_storage_spi: flash@0 {
	156	+ reg = <0 0x400000>;
	157	+ };
132	158	};
133	159
134	160	};
	1	+* MTD SPI driver for serial flash chips
	2	+
	3	+Required properties:
	4	+- #address-cells, #size-cells : Must be present if the device has sub-nodes
	5	+ representing partitions.
	6	+- compatible : Should be the manufacturer and the name of the chip. Bear in
	7	+ mind that the DT binding is not U-Boot-only, but in case of
	8	+ U-Boot, see spi_flash_params_table table in
	9	+ drivers/mtd/spi/sf_params.c for the list of supported chips.
	10	+- reg : Chip-Select number
	11	+- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
	12	+
	13	+Optional properties:
	14	+ - memory-map : Address and size of the flash, if memory mapped. This may
	15	+ apply to Intel chipsets, which tend to memory-map flash.
	16	+
	17	+Example:
	18	+
	19	+ flash: m25p80@0 {
	20	+ #address-cells = <1>;
	21	+ #size-cells = <1>;
	22	+ compatible = "spansion,m25p80";
	23	+ reg = <0>;
	24	+ spi-max-frequency = <40000000>;
	25	+ };