| Message ID | 1480693022-22110-1-git-send-email-nathan.sullivan@ni.com |
|---|---|
| State | New |
| Headers | show |
On Fri, Dec 02, 2016 at 09:37:02AM -0600, Nathan Sullivan wrote: > The GPIO-based NAND controller on National Instruments 169445 hardware > exposes a set of simple lines for the control signals. > > Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> > --- > "devicetree: add vendor prefix for National Instruments" added the ni vendor prefix. > > This patch is needed for "MIPS: NI 169445 board support", so that GPIO NAND can work. > > .../bindings/gpio/ni,169445-nand-gpio.txt | 36 ++++++++++++++++++++++ > drivers/gpio/gpio-mmio.c | 1 + > 2 files changed, 37 insertions(+) > create mode 100644 Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt > > diff --git a/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt b/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt > new file mode 100644 > index 0000000..ca2c14f > --- /dev/null > +++ b/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt > @@ -0,0 +1,36 @@ > +Bindings for the National Instruments 169445 GPIO NAND controller > + > +The 169445 GPIO NAND controller has two memory mapped GPIO registers, one > +for input (the ready signal) and one for output (control signals). It is > +intended to be used with the GPIO NAND driver. > + > +Required properties: > + - compatible: should be "ni,169445-nand-gpio" > + - reg-names: must contain > + "dat" - data register -names with a single entry is pointless. > + - reg: address + size pairs describing the GPIO register sets; > + order must correspond with the order of entries in reg-names > + - #gpio-cells: must be set to 2. The first cell is the pin number and > + the second cell is used to specify the gpio polarity: > + 0 = active high > + 1 = active low > + - gpio-controller: Marks the device node as a gpio controller. > + > +Examples: > + gpio1: nand-gpio-out@1f300010 { gpio-controller@... > + compatible = "ni,169445-nand-gpio"; > + reg = <0x1f300010 0x4>; > + reg-names = "dat"; > + gpio-controller; > + #gpio-cells = <2>; > + ngpios = <5>; > + }; > + > + gpio2: nand-gpio-in@1f300014 { ditto > + compatible = "ni,169445-nand-gpio"; > + reg = <0x1f300014 0x4>; > + reg-names = "dat"; > + gpio-controller; > + #gpio-cells = <2>; > + ngpios = <1>; > + }; -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt b/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt new file mode 100644 index 0000000..ca2c14f --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt @@ -0,0 +1,36 @@ +Bindings for the National Instruments 169445 GPIO NAND controller + +The 169445 GPIO NAND controller has two memory mapped GPIO registers, one +for input (the ready signal) and one for output (control signals). It is +intended to be used with the GPIO NAND driver. + +Required properties: + - compatible: should be "ni,169445-nand-gpio" + - reg-names: must contain + "dat" - data register + - reg: address + size pairs describing the GPIO register sets; + order must correspond with the order of entries in reg-names + - #gpio-cells: must be set to 2. The first cell is the pin number and + the second cell is used to specify the gpio polarity: + 0 = active high + 1 = active low + - gpio-controller: Marks the device node as a gpio controller. + +Examples: + gpio1: nand-gpio-out@1f300010 { + compatible = "ni,169445-nand-gpio"; + reg = <0x1f300010 0x4>; + reg-names = "dat"; + gpio-controller; + #gpio-cells = <2>; + ngpios = <5>; + }; + + gpio2: nand-gpio-in@1f300014 { + compatible = "ni,169445-nand-gpio"; + reg = <0x1f300014 0x4>; + reg-names = "dat"; + gpio-controller; + #gpio-cells = <2>; + ngpios = <1>; + }; diff --git a/drivers/gpio/gpio-mmio.c b/drivers/gpio/gpio-mmio.c index d7d03ad..f7da40e 100644 --- a/drivers/gpio/gpio-mmio.c +++ b/drivers/gpio/gpio-mmio.c @@ -575,6 +575,7 @@ static void __iomem *bgpio_map(struct platform_device *pdev, static const struct of_device_id bgpio_of_match[] = { { .compatible = "brcm,bcm6345-gpio" }, { .compatible = "wd,mbl-gpio" }, + { .compatible = "ni,169445-nand-gpio" }, { } }; MODULE_DEVICE_TABLE(of, bgpio_of_match);
The GPIO-based NAND controller on National Instruments 169445 hardware exposes a set of simple lines for the control signals. Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> --- "devicetree: add vendor prefix for National Instruments" added the ni vendor prefix. This patch is needed for "MIPS: NI 169445 board support", so that GPIO NAND can work. .../bindings/gpio/ni,169445-nand-gpio.txt | 36 ++++++++++++++++++++++ drivers/gpio/gpio-mmio.c | 1 + 2 files changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/ni,169445-nand-gpio.txt