On Wed, Jul 20, 2016 at 03:28:22PM +0930, Andrew Jeffery wrote: > Outline expectations on the pin controller's relationship with the > System Control Unit (SCU) IP through syscon, and document the compatible > strings for 4th and 5th generation Aspeed SoC pin controllers. > > Signed-off-by: Andrew Jeffery <andrew@xxxxxxxx> > --- > .../devicetree/bindings/pinctrl/pinctrl-aspeed.txt | 45 ++++++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 46 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt > > diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt > new file mode 100644 > index 000000000000..5aac6a0a2e89 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt > @@ -0,0 +1,45 @@ > +Aspeed Pin Controllers > +---------------------- > + > +The Aspeed SoCs vary in functionality inside a generation but have a common mux > +device register layout. > + > +Required properties: > +- compatible: should be one of the following: > + "aspeed,g4-pinctrl"; > + "aspeed,g5-pinctrl" > + > +The pin controller node should be a child of a syscon node with the required > +property: > +- compatible: "syscon", "simple-mfd" > + > +Refer to the the bindings described in > +Documentation/devicetree/bindings/mfd/syscon.txt > + > +Subnode format: > + > +Please refer to pinctrl-bindings.txt in this directory for details of the > +common pinctrl bindings used by client devices. > + > +The required properties of child nodes are (as defined in pinctrl-bindings): > +- function > +- groups > + > +Each function has only one associated pin group. Each group is named by its > +function. > + > +Examples: > + > +syscon: scu@1e6e2000 { > + compatible = "syscon", "simple-mfd"; > + reg = <0x1e6e2000 0x1a8>; > + > + pinctrl: pinctrl@1e6e2000 { > + compatible = "aspeed,g4-pinctrl"; > + > + pinctrl_i2c3_default: i2c3_default { > + function = "I2C3"; > + groups = "I2C3"; All these strings need to be documented. > + }; > + }; > +}; > diff --git a/MAINTAINERS b/MAINTAINERS > index 1209323b7e43..b5f2d3576d3a 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -1003,6 +1003,7 @@ S: Maintained > F: arch/arm/mach-aspeed/ > F: arch/arm/boot/dts/aspeed-* > F: drivers/*/*aspeed* > +F: Documentation/devicetree/bindings/*/*aspeed* > > ARM/ATMEL AT91RM9200, AT91SAM9 AND SAMA5 SOC SUPPORT > M: Nicolas Ferre <nicolas.ferre@xxxxxxxxx> > -- > 2.7.4 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html