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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>
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@ -1,6 +1,9 @@
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/dts-v1/;
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/ {
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#address-cells = <1>;
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#size-cells = <0>;
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chosen {
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stdout-path = "/serial";
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};
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@ -131,4 +134,27 @@
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num-gpios = <20>;
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};
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spi@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <0>;
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compatible = "sandbox,spi";
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cs-gpios = <0>, <&gpio_a 0>;
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flash@0 {
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reg = <0>;
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compatible = "spansion,m25p16", "sandbox,spi-flash";
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spi-max-frequency = <40000000>;
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sandbox,filename = "spi.bin";
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};
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};
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cros-ec@0 {
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compatible = "google,cros-ec";
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#address-cells = <1>;
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#size-cells = <1>;
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firmware_storage_spi: flash@0 {
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reg = <0 0x400000>;
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};
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};
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};
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25
doc/device-tree-bindings/mtd/spi/spi-flash.txt
Normal file
25
doc/device-tree-bindings/mtd/spi/spi-flash.txt
Normal file
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* MTD SPI driver for serial flash chips
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Required properties:
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- #address-cells, #size-cells : Must be present if the device has sub-nodes
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representing partitions.
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- compatible : Should be the manufacturer and the name of the chip. Bear in
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mind that the DT binding is not U-Boot-only, but in case of
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U-Boot, see spi_flash_params_table table in
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drivers/mtd/spi/sf_params.c for the list of supported chips.
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- reg : Chip-Select number
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- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
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Optional properties:
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- memory-map : Address and size of the flash, if memory mapped. This may
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apply to Intel chipsets, which tend to memory-map flash.
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Example:
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flash: m25p80@0 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "spansion,m25p80";
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reg = <0>;
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spi-max-frequency = <40000000>;
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};
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