Re: [PATCH V2 1/3] Docs: dt: rockchip: add rk-iommu, disable-reset-quirk property
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From: Heiko Stuebner <hidden>
Date: 2017-07-21 06:57:36
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linux-rockchip, lkml
Hi Simon, Am Freitag, 21. Juli 2017, 14:27:08 CEST schrieb Simon Xue:
From: Simon <redacted> Add rk-iommu,disable-reset-quirk property to ignore the isp mmu reset operation Signed-off-by: Simon <redacted>
please use your full name in From and Signed-off. Also, you need to include devicetree-people and mailinglists (as scripts/get_maintainer.pl will show you) when sending dt-binding changes.
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--- changes since V1: - new added file Documentation/devicetree/bindings/iommu/rockchip,iommu.txt | 5 +++++ 1 file changed, 5 insertions(+)diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt index 9a55ac3..aa2136c 100644 --- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt +++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.txt@@ -15,6 +15,11 @@ Required properties: to associate with its master device. See: Documentation/devicetree/bindings/iommu/iommu.txt +Optional properties: +- rk-iommu,disable-reset-quirk : This ignore the isp mmu reset operation.
Prefix should be "rockchip," not "rk-iommu,". Also, this quirk could be renamed to something like: rockchip,disable-mmu-reset: Don't use the mmu reset operation. Some mmu instances may produce unexpected results when the reset operation is used. But that is more a Heiko
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+ It can't get the expected result when isp mmu + reset, but the reset function work normally + Example: vopl_mmu: iommu@ff940300 {