From 22f090a4b15bf08aab30d8bcdc93d6dc9d07c9a7 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sun, 22 Jan 2017 13:21:19 +0100 Subject: [PATCH] mtd: add DT bindings for the Cortina Systems Gemini Flash This adds device tree bindings for the Cortina systems Gemini flash controller, a simple physmap which however need a few syscon bits to be poked to operate properly. Cc: Janos Laube Cc: Paulius Zaleckas Cc: Hans Ulli Kroll Cc: Florian Fainelli Cc: devicetree@vger.kernel.org Signed-off-by: Linus Walleij Reviewed-by: Marek Vasut Acked-by: Rob Herring Signed-off-by: Brian Norris --- .../bindings/mtd/cortina,gemini-flash.txt | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt diff --git a/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt b/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt new file mode 100644 index 000000000000..3fa1b34d69ad --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt @@ -0,0 +1,24 @@ +Flash device on Cortina Systems Gemini SoC + +This flash is regular CFI compatible (Intel or AMD extended) flash chips with +some special bits that can be controlled by the machine's system controller. + +Required properties: +- compatible : must be "cortina,gemini-flash", "cfi-flash"; +- reg : memory address for the flash chip +- syscon : must be a phandle to the system controller +- bank-width : width in bytes of flash interface, should be <2> + +For the rest of the properties, see mtd-physmap.txt. + +The device tree may optionally contain sub-nodes describing partitions of the +address space. See partition.txt for more detail. + +Example: + +flash@30000000 { + compatible = "cortina,gemini-flash", "cfi-flash"; + reg = <0x30000000 0x01000000>; + syscon = <&syscon>; + bank-width = <2>; +}; -- 2.30.2