| Message ID | 20170128215004.11532-1-linus.walleij@linaro.org |
|---|---|
| State | Accepted |
| Delegated to: | Brian Norris |
| Headers | show |
On Sat, Jan 28, 2017 at 10:50:04PM +0100, Linus Walleij wrote: > 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 <janos.dev@gmail.com> > Cc: Paulius Zaleckas <paulius.zaleckas@gmail.com> > Cc: Hans Ulli Kroll <ulli.kroll@googlemail.com> > Cc: Florian Fainelli <f.fainelli@gmail.com> > Cc: devicetree@vger.kernel.org > Reviewed-by: Marek Vasut <marek.vasut@gmail.com> > Acked-by: Rob Herring <robh@kernel.org> > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > ChangeLog v1->v2: > - Add Marek's and Rob's ACK tags. > > MTD maintainers: please just apply this to the MTD tree when > you are happy with it. It is functionally orthogonal to the rest > of the series and is just in the series for context. I can't seem to find the rest of the series "for context", but this is pretty harmless, so... applied to l2-mtd.git.
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>; +};