[PATCH v3 2/6] dt-bindings: mediatek: Add smi dts binding
From: yong.wu@mediatek.com (Yong Wu)
Date: 2015-07-16 09:05:26
Also in:
linux-devicetree, linux-iommu, linux-mediatek, lkml
Subsystem:
mediatek smi driver, memory controller drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Yong Wu, Krzysztof Kozlowski, Rob Herring, Conor Dooley, Linus Torvalds
This patch add smi binding document. Signed-off-by: Yong Wu <yong.wu@mediatek.com> --- .../memory-controllers/mediatek,smi-larb.txt | 25 ++++++++++++++++++++ .../bindings/memory-controllers/mediatek,smi.txt | 24 +++++++++++++++++++ 2 files changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,smi.txt
diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt
new file mode 100644
index 0000000..ae11dcf
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi-larb.txt@@ -0,0 +1,25 @@ +SMI (Smart Multimedia Interface) Local Arbiter + +The hardware block diagram please check bindings/iommu/mediatek,iommu.txt + +Required properties: +- compatible : must be "mediatek,mt8173-smi-larb" +- reg : the register and size of this local arbiter. +- mediatek,smi : a phandle to the smi_common node. +- power-domains : a phandle to the power domain of this local arbiter. +- clocks : Must contain an entry for each entry in clock-names. +- clock-names: must contain 2 entries, as follows: + - "apb" : Advanced Peripheral Bus clock, It's the clock for setting + the register. + - "smi" : It's the clock for transfer data and command. + +Example: + larb1: larb at 16010000 { + compatible = "mediatek,mt8173-smi-larb"; + reg = <0 0x16010000 0 0x1000>; + mediatek,smi = <&smi_common>; + power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>; + clocks = <&vdecsys CLK_VDEC_CKEN>, + <&vdecsys CLK_VDEC_LARB_CKEN>; + clock-names = "apb", "smi"; + };
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diff --git a/Documentation/devicetree/bindings/memory-controllers/mediatek,smi.txt b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi.txt
new file mode 100644
index 0000000..f34b3ef
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/mediatek,smi.txt@@ -0,0 +1,24 @@ +SMI (Smart Multimedia Interface) + +The hardware block diagram please check bindings/iommu/mediatek,iommu.txt + +Required properties: +- compatible : must be "mediatek,mt8173-smi" +- reg : the register and size of the SMI block. +- power-domains : a phandle to the power domain of this local arbiter. +- clocks : Must contain an entry for each entry in clock-names. +- clock-names : must contain 2 entries, as follows: + - "apb" : Advanced Peripheral Bus clock, It's the clock for setting + the register. + - "smi" : It's the clock for transfer data and command. + They may be the same if both source clock are the same. + +Example: + smi_common: smi at 14022000 { + compatible = "mediatek,mt8173-smi"; + reg = <0 0x14022000 0 0x1000>; + power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; + clocks = <&mmsys CLK_MM_SMI_COMMON>, + <&mmsys CLK_MM_SMI_COMMON>; + clock-names = "apb", "smi"; + };
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