From: <yong.wu@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>, Joerg Roedel <joro@8bytes.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
Will Deacon <will.deacon@arm.com>,
Daniel Kurtz <djkurtz@google.com>, Tomasz Figa <tfiga@google.com>,
Lucas Stach <l.stach@pengutronix.de>,
Mark Rutland <mark.rutland@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
<linux-mediatek@lists.infradead.org>,
Sasha Hauer <kernel@pengutronix.de>,
<srv_heupstream@mediatek.com>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<iommu@lists.linux-foundation.org>,
Yong Wu <yong.wu@mediatek.com>
Subject: [PATCH 4/5] dt-bindings: iommu: Add binding for mediatek IOMMU
Date: Fri, 6 Mar 2015 18:48:19 +0800 [thread overview]
Message-ID: <1425638900-24989-5-git-send-email-yong.wu@mediatek.com> (raw)
In-Reply-To: <1425638900-24989-1-git-send-email-yong.wu@mediatek.com>
From: Yong Wu <yong.wu@mediatek.com>
This patch add mediatek iommu dts binding document.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
.../devicetree/bindings/iommu/mediatek,iommu.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
diff --git a/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
new file mode 100644
index 0000000..db01c92
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
@@ -0,0 +1,41 @@
+/******************************************************/
+/* Mediatek IOMMU Hardware block diagram */
+/******************************************************/
+ EMI (External Memory Interface)
+ |
+ m4u (Multimedia Memory Management Unit)
+ |
+ smi (Smart Multimedia Interface)
+ |
+ +---------------+-------
+ | |
+ | |
+ vdec larb disp larb ... SoCs have different local arbiter(larb).
+ | |
+ | |
+ +----+----+ +-----+-----+
+ | | | | | | ...
+ | | | | | | ...
+ | | | | | | ...
+ MC PP VLD OVL0 RDMA0 WDMA0 ... There are different ports in each larb.
+
+Required properties:
+- compatible : must be "mediatek,mt8173-iommu"
+- reg : m4u register base
+- interrupts : must contain the interrupts from each internal translation unit
+- clocks : must contain one entry for each clock-name
+- clock-name: m4u clock
+- larb : must contain the larbes of current platform
+- iommu-cells : must be 1. Specifies the client PortID as defined in
+dt-binding/iommu/mt**-iommu-port.h
+
+Example:
+ iommu: mmsys_iommu@10205000 {
+ compatible = "mediatek,mt8173-iommu";
+ reg = <0 0x10205000 0 0x1000>;
+ interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&infrasys INFRA_M4U>;
+ clock-names = "infra_m4u";
+ larb = <&larb0 &larb1 &larb2 &larb3 &larb4 &larb5>;
+ #iommu-cells = <1>;
+ };
\ No newline at end of file
--
1.8.1.1.dirty
next prev parent reply other threads:[~2015-03-06 10:49 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-06 10:48 [RFC PATCH 0/5] MT8173 IOMMU support yong.wu
2015-03-06 10:48 ` [PATCH 1/5] soc: mediatek: Add SMI driver yong.wu
2015-03-06 11:30 ` Paul Bolle
2015-03-09 11:57 ` Yong Wu
2015-03-09 17:59 ` Paul Bolle
2015-03-09 21:54 ` Arnd Bergmann
2015-03-10 6:17 ` Yingjoe Chen
2015-03-09 3:26 ` Yingjoe Chen
2015-03-09 21:56 ` Arnd Bergmann
2015-03-10 6:27 ` Yingjoe Chen
2015-03-10 9:05 ` Arnd Bergmann
2015-03-10 9:24 ` Lucas Stach
2015-03-09 11:03 ` Sascha Hauer
2015-03-06 10:48 ` [PATCH 2/5] iommu/mediatek: Add mt8173 IOMMU driver yong.wu
2015-03-06 10:58 ` Will Deacon
2015-03-09 12:11 ` Yong Wu
2015-03-17 15:14 ` Will Deacon
2015-03-06 17:15 ` Mitchel Humpherys
2015-03-09 12:16 ` Yong Wu
2015-03-09 16:57 ` Mitchel Humpherys
2015-03-08 4:12 ` Tomasz Figa
2015-03-12 14:16 ` Yong Wu
2015-03-09 8:24 ` Daniel Kurtz
2015-03-09 11:11 ` Tomasz Figa
2015-03-09 14:46 ` Yingjoe Chen
2015-03-09 17:00 ` Tomasz Figa
2015-03-10 3:41 ` Yingjoe Chen
2015-03-10 4:06 ` Tomasz Figa
2015-03-11 10:53 ` Tomasz Figa
2015-03-18 11:22 ` Yong Wu
2015-03-20 19:14 ` Robin Murphy
2015-04-14 6:50 ` Yong Wu
2015-03-27 9:41 ` Tomasz Figa
2015-04-14 6:31 ` Yong Wu
2015-04-15 2:20 ` Tomasz Figa
2015-04-15 7:06 ` Yong Wu
2015-04-15 7:41 ` Tomasz Figa
2015-04-29 6:23 ` Yong Wu
2015-03-06 10:48 ` [PATCH 3/5] dt-bindings: mediatek: Add smi dts binding yong.wu
2015-03-06 11:13 ` Mark Rutland
2015-03-09 12:55 ` Yong Wu
2015-04-14 9:07 ` Yong Wu
2015-04-14 10:06 ` Mark Rutland
2015-04-14 13:49 ` Yong Wu
2015-04-14 13:55 ` Yong Wu
2015-04-14 13:56 ` Mark Rutland
2015-03-06 14:48 ` Sergei Shtylyov
2015-03-09 12:32 ` Yong Wu
2015-03-06 10:48 ` yong.wu [this message]
2015-03-06 11:21 ` [PATCH 4/5] dt-bindings: iommu: Add binding for mediatek IOMMU Mark Rutland
2015-03-09 11:30 ` Yong Wu
2015-03-06 10:48 ` [PATCH 5/5] dts: mt8173: Add iommu/smi nodes for mt8173 yong.wu
2015-03-07 15:20 ` Daniel Kurtz
2015-03-09 12:18 ` Yong Wu
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