On Mon, Aug 05, 2013 at 02:12:06PM +0800, Shawn Guo wrote:
> On Fri, Aug 02, 2013 at 12:38:24PM +0200, Markus Pargmann wrote:
> > Signed-off-by: Markus Pargmann <mpa@xxxxxxxxxxxxxx>
> > ---
> > .../bindings/pinctrl/fsl,imx27-pinctrl.txt | 53 +++
> > drivers/pinctrl/Kconfig | 8 +
> > drivers/pinctrl/Makefile | 1 +
> > drivers/pinctrl/pinctrl-imx27.c | 477 +++++++++++++++++++++
> > 4 files changed, 539 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt
> > create mode 100644 drivers/pinctrl/pinctrl-imx27.c
> >
> > diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt
> > new file mode 100644
> > index 0000000..3352d94
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt
> > @@ -0,0 +1,53 @@
> > +* Freescale IMX27 IOMUX Controller
> > +
> > +Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
> > +and usage.
> > +
> > +The iomuxc driver node can have pin configuration and gpio subnodes. gpio
> > +nodes defined as childs will share the registers with the iomuxc driver.
> > +Please have a look into
> > +Documentation/devicetree/bindings/gpio/fsl-imx-gpio.txt for information about
> > +the gpio properties.
> > +
> > +Required properties:
> > +- compatible: "fsl,imx27-iomuxc"
> > +
> > +Required properties for pin configuration node:
> > +- fsl,pins: three integers array, represents a group of pins mux and config
> > + setting. The format is fsl,pins = <PIN MUX_ID CONFIG>. PIN and MUX_ID are
>
> Neither here nor imx27-pinfunc.h is PIN documented clearly. Also,
> imx27-pinfunc.h names MUX_CONFIG for what we name MUX_ID here.
I added PIN documentation in imx27-pinfunc.h and the bindings
docs. Fixed MUX_ID/MUX_CONFIG.
Thanks,
Markus
>
> Shawn
>
> > + defined as macros in arch/arm/boot/dts/imx27-pinfunc.h. CONFIG can be 0 or
> > + 1, meaning Pullup disable/enable.
> > +
> > +Example:
> > +
> > +iomuxc: iomuxc@10015000 {
> > + compatible = "fsl,imx27-iomuxc";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <0x10015000 0x600>;
> > +
> > + gpio1: gpio@10015000 {
> > + compatible = "fsl,imx27-gpio", "fsl,imx21-gpio";
> > + reg = <0x10015000>;
> > + interrupts = <8>;
> > + gpio-controller;
> > + #gpio-cells = <2>;
> > + interrupt-controller;
> > + #interrupt-cells = <2>;
> > + };
> > +
> > + ...
> > +
> > + uart {
> > + pinctrl_uart1: uart-1 {
> > + fsl,pins = <
> > + MX27_PAD_UART1_TXD__UART1_TXD 0x0
> > + MX27_PAD_UART1_RXD__UART1_RXD 0x0
> > + MX27_PAD_UART1_CTS__UART1_CTS 0x0
> > + MX27_PAD_UART1_RTS__UART1_RTS 0x0
> > + >;
> > + };
> > +
> > + ...
> > + };
> > +};
>
>
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