Rockchip IOMMUs are used without explicit clock handling for 4 years
now, so we should keep compatibility with old devicetrees if possible.
Therefore make iommu clocks optional.
Fixes: 8fa9eb39c614 ("dt-bindings: iommu/rockchip: Add clock property")
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
---
Documentation/devicetree/bindings/iommu/rockchip,iommu.txt | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
index 6ecefea1c6f9..25bfad987513 100644
--- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
+++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt
@@ -14,13 +14,13 @@ Required properties:
"single-master" device, and needs no additional information
to associate with its master device. See:
Documentation/devicetree/bindings/iommu/iommu.txt
+
+Optional properties:
- clocks : A list of clocks required for the IOMMU to be accessible by
the host CPU.
- clock-names : Should contain the following:
"iface" - Main peripheral bus clock (PCLK/HCL) (required)
"aclk" - AXI bus clock (required)
-
-Optional properties:
- rockchip,disable-mmu-reset : Don't use the mmu reset operation.
Some mmu instances may produce unexpected results
when the reset operation is used.
--
2.16.2
--
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