Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1711848

[PATCH v2 3/3] PCI: iproc: Implement optional property prsnt-gpios

Show all headers | View raw

Add description for optional device tree property
'prsnt-gpios' for PCI hotplug feature.

Signed-off-by: Oza Pawandeep <oza.oza@broadcom.com>
Reviewed-by: Ray Jui <ray.jui@broadcom.com>

diff --git a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
index b8e48b4..0c5f631 100644
--- a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
@@ -72,6 +72,20 @@ Optional properties:
 - brcm,pcie-msi-inten: Needs to be present for some older iProc platforms that
 require the interrupt enable registers to be set explicitly to enable MSI
 
+Optional properties:
+- slot-pluggable: PCI hotplug feature is supported.
+- prsnt-gpios: Array of gpios, needs to be present if Hotplug is supported.
+
+Refer to the following binding documents for more detailed description on
+the use of 'slot-pluggable' and 'prsnt-gpios'.
+  Documentation/devicetree/bindings/pci/pci.txt
+
+Example:
+prsnt-gpios: <&pca9505 32 1>, <&pca9505 33 1>;
+This is x4 connector: monitoring max 2 present lines.
+prsnt-gpios: <&pca9505 32 1>, <&pca9505 33 1>, <&pca9505 34 1>;
+This is x8 connector: monitoring max 3 present lines.
+
 Example:
 	pcie0: pcie@18012000 {
 		compatible = "brcm,iproc-pcie";
-- 
1.9.1

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH v2 3/3] PCI: iproc: Implement optional property prsnt-gpios Oza Pawandeep <oza.oza@broadcom.com> - 2017-08-15 08:00 +0200
  Re: [PATCH v2 3/3] PCI: iproc: Implement optional property  prsnt-gpios Rob Herring <robh@kernel.org> - 2017-08-17 23:00 +0200

csiph-web