[PATCH 01/11] dt-bindings: pinctrl: Optional DT property to support pin mappings
From: robh+dt@kernel.org (Rob Herring)
Date: 2015-10-22 18:45:29
Also in:
linux-devicetree, linux-gpio, lkml
On Mon, Oct 19, 2015 at 12:43 AM, Pramod Kumar [off-list ref] wrote:
If GPIO controller's pins are muxed, pin-controller subsystem need to be intimated by defining mapping between gpio and pinmux controller. This patch adds required properties to define this mapping via DT. Signed-off-by: Pramod Kumar <redacted> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com>
Acked-by: Rob Herring <robh@kernel.org>
quoted hunk ↗ jump to hunk
--- .../devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt b/Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt index 6540ca5..25a5002 100644 --- a/Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt +++ b/Documentation/devicetree/bindings/pinctrl/brcm,cygnus-gpio.txt@@ -26,9 +26,13 @@ Optional properties: - interrupt-controller: Specifies that the node is an interrupt controller -- pinmux: - Specifies the phandle to the IOMUX device, where pins can be individually -muxed to GPIO +- gpio-ranges: + Specifies the mapping between gpio controller and pin-controllers pins. + This requires 4 fields in cells defined as - + 1. Phandle of pin-controller. + 2. GPIO base pin offset. + 3 Pin-control base pin offset. + 4. number of gpio pins which are linearly mapped from pin base. Supported generic PINCONF properties in child nodes:@@ -78,6 +82,8 @@ Example: gpio-controller; interrupts = <GIC_SPI 174 IRQ_TYPE_LEVEL_HIGH>; interrupt-controller; + gpio-ranges = <&pinctrl 0 42 1>, + <&pinctrl 1 44 3>; }; /* --1.9.1