* [PATCH] dt-bindings: usb: ehci/ohci: Allow "dma-coherent"
@ 2025-12-15 21:25 Rob Herring (Arm)
2025-12-17 8:41 ` Krzysztof Kozlowski
0 siblings, 1 reply; 2+ messages in thread
From: Rob Herring (Arm) @ 2025-12-15 21:25 UTC (permalink / raw)
To: Greg Kroah-Hartman, Krzysztof Kozlowski, Conor Dooley
Cc: linux-usb, devicetree, linux-kernel
EHCI and OHCI controllers can be DMA coherent on some platforms, so
allow the "dma-coherent" property.
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
Documentation/devicetree/bindings/usb/generic-ehci.yaml | 2 ++
Documentation/devicetree/bindings/usb/generic-ohci.yaml | 2 ++
2 files changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/generic-ehci.yaml b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
index 4e84bead0232..601f097c09a6 100644
--- a/Documentation/devicetree/bindings/usb/generic-ehci.yaml
+++ b/Documentation/devicetree/bindings/usb/generic-ehci.yaml
@@ -93,6 +93,8 @@ properties:
minItems: 1
maxItems: 2
+ dma-coherent: true
+
interrupts:
maxItems: 1
diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
index 3ee1586fc8b9..961cbf85eeb5 100644
--- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml
+++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml
@@ -64,6 +64,8 @@ properties:
reg:
maxItems: 1
+ dma-coherent: true
+
interrupts:
maxItems: 1
--
2.51.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] dt-bindings: usb: ehci/ohci: Allow "dma-coherent"
2025-12-15 21:25 [PATCH] dt-bindings: usb: ehci/ohci: Allow "dma-coherent" Rob Herring (Arm)
@ 2025-12-17 8:41 ` Krzysztof Kozlowski
0 siblings, 0 replies; 2+ messages in thread
From: Krzysztof Kozlowski @ 2025-12-17 8:41 UTC (permalink / raw)
To: Rob Herring (Arm)
Cc: Greg Kroah-Hartman, Krzysztof Kozlowski, Conor Dooley, linux-usb,
devicetree, linux-kernel
On Mon, Dec 15, 2025 at 03:25:14PM -0600, Rob Herring (Arm) wrote:
> EHCI and OHCI controllers can be DMA coherent on some platforms, so
> allow the "dma-coherent" property.
>
> Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
> ---
> Documentation/devicetree/bindings/usb/generic-ehci.yaml | 2 ++
> Documentation/devicetree/bindings/usb/generic-ohci.yaml | 2 ++
> 2 files changed, 4 insertions(+)
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 2+ messages in thread
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2025-12-15 21:25 [PATCH] dt-bindings: usb: ehci/ohci: Allow "dma-coherent" Rob Herring (Arm)
2025-12-17 8:41 ` Krzysztof Kozlowski
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