From: Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org
Cc: mark.rutland-5wv7dgnIgG8@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Heiko Stuebner <heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>,
robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
jeffy.chen-TNX95d0MmH7DzftRWevZcw@public.gmane.org,
tfiga-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
linux-rockchip-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
robin.murphy-5wv7dgnIgG8@public.gmane.org,
tomeu-XCtybt49RKsYaV1qd6yewg@public.gmane.org
Subject: [PATCH 1/2] dt-bindings: iommu/rockchip: Make clock properties optional
Date: Tue, 10 Apr 2018 11:26:11 +0200 [thread overview]
Message-ID: <20180410092612.2653-2-heiko@sntech.de> (raw)
In-Reply-To: <20180410092612.2653-1-heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
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-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
---
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
next prev parent reply other threads:[~2018-04-10 9:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-10 9:26 [PATCH 0/2] iommu/rockchip: fix clock handling to not break old dts Heiko Stuebner
[not found] ` <20180410092612.2653-1-heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
2018-04-10 9:26 ` Heiko Stuebner [this message]
[not found] ` <20180410092612.2653-2-heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
2018-04-10 11:18 ` [PATCH 1/2] dt-bindings: iommu/rockchip: Make clock properties optional Robin Murphy
[not found] ` <99245ec4-6835-7fa7-3bad-dd21874f92c0-5wv7dgnIgG8@public.gmane.org>
2018-04-10 11:26 ` Heiko Stuebner
2018-04-13 21:02 ` Rob Herring
2018-04-17 12:01 ` Heiko Stuebner
2018-04-10 9:26 ` [PATCH 2/2] iommu/rockchip: make clock handling optional Heiko Stuebner
[not found] ` <20180410092612.2653-3-heiko-4mtYJXux2i+zQB+pC5nmwQ@public.gmane.org>
2018-04-10 11:24 ` Robin Murphy
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