Patchwork [06/12] dt-bindings: PCI: aardvark: describe the reset-gpios property

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Submitter Miquel Raynal
Date Nov. 23, 2018, 2:18 p.m.
Message ID <20181123141831.8214-7-miquel.raynal@bootlin.com>
Download mbox | patch
Permalink /patch/663655/
State New
Headers show

Comments

Miquel Raynal - Nov. 23, 2018, 2:18 p.m.
A GPIO might be used to reset the PCI IP. Describe the property needed
in this case.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 Documentation/devicetree/bindings/pci/aardvark-pci.txt | 5 +++++
 1 file changed, 5 insertions(+)
Rob Herring - Dec. 11, 2018, 9:44 p.m.
On Fri, 23 Nov 2018 15:18:25 +0100, Miquel Raynal wrote:
> A GPIO might be used to reset the PCI IP. Describe the property needed
> in this case.
> 
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
> ---
>  Documentation/devicetree/bindings/pci/aardvark-pci.txt | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>

Patch

diff --git a/Documentation/devicetree/bindings/pci/aardvark-pci.txt b/Documentation/devicetree/bindings/pci/aardvark-pci.txt
index 310ef7145c47..252934237138 100644
--- a/Documentation/devicetree/bindings/pci/aardvark-pci.txt
+++ b/Documentation/devicetree/bindings/pci/aardvark-pci.txt
@@ -20,6 +20,10 @@  contain the following properties:
    define the mapping of the PCIe interface to interrupt numbers.
  - bus-range: PCI bus numbers covered
 
+The following are optional properties:
+
+ - reset-gpios: GPIO to reset the device
+
 In addition, the Device Tree describing an Aardvark PCIe controller
 must include a sub-node that describes the legacy interrupt controller
 built into the PCIe controller. This sub-node must have the following
@@ -48,6 +52,7 @@  Example:
 				<0 0 0 2 &pcie_intc 1>,
 				<0 0 0 3 &pcie_intc 2>,
 				<0 0 0 4 &pcie_intc 3>;
+		reset-gpios = <&gpiosb 3 GPIO_ACTIVE_HIGH>;
 		pcie_intc: interrupt-controller {
 			interrupt-controller;
 			#interrupt-cells = <1>;