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[v3,03/10] dt-bindings: ata: Update ahci bindings with possible per-port interrupts

Message ID 20190322134003.4893-4-miquel.raynal@bootlin.com (mailing list archive)
State New, archived
Headers show
Series Enable per-port SATA interrupts and drop a hack in the IRQ subsystem | expand

Commit Message

Miquel Raynal March 22, 2019, 1:39 p.m. UTC
Update bindings to reflect the fact that a SATA IP can either have:
- only one interrupt: in this case an 'interrupts' property is
  declared at the root of the node;
- each SATA port can have their own interrupt: in this case there is
  one 'interrupts' property per port/sub-node and none at the root.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
 Documentation/devicetree/bindings/ata/ahci-platform.txt | 6 ++++++
 1 file changed, 6 insertions(+)
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diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index e30fd106df4f..80261e2845b0 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -53,6 +53,12 @@  And at least one of the following properties:
 - phys		    : reference to the SATA PHY node
 - target-supply     : regulator for SATA target power
+Sub-nodes optional properties:
+- interrupts        : <interrupt mapping for SATA ports IRQ>, please
+                      note that either the root SATA node has the
+                      interrupts property, or there is one per SATA
+                      port, but not both at the same time.
         sata@ffe08000 {
 		compatible = "snps,spear-ahci";