diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0204-dt-bindings-dmaengine-Add-MediaTek-High-Speed-DMA-co.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0204-dt-bindings-dmaengine-Add-MediaTek-High-Speed-DMA-co.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0204-dt-bindings-dmaengine-Add-MediaTek-High-Speed-DMA-co.patch b/target/linux/mediatek/patches-4.14/0204-dt-bindings-dmaengine-Add-MediaTek-High-Speed-DMA-co.patch new file mode 100644 index 0000000000..edb3852ce5 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0204-dt-bindings-dmaengine-Add-MediaTek-High-Speed-DMA-co.patch @@ -0,0 +1,57 @@ +From 71198859668501ef57450be07da77e9544f59f1e Mon Sep 17 00:00:00 2001 +From: Sean Wang <sean.wang@mediatek.com> +Date: Sat, 13 May 2017 15:16:58 +0800 +Subject: [PATCH 204/224] dt-bindings: dmaengine: Add MediaTek High-Speed DMA + controller bindings + +Document the devicetree bindings for MediaTek High-Speed DMA controller +which could be found on MT7623 SoC or other similar Mediatek SoCs. + +Signed-off-by: Sean Wang <sean.wang@mediatek.com> +--- + .../devicetree/bindings/dma/mtk-hsdma.txt | 33 ++++++++++++++++++++++ + 1 file changed, 33 insertions(+) + create mode 100644 Documentation/devicetree/bindings/dma/mtk-hsdma.txt + +diff --git a/Documentation/devicetree/bindings/dma/mtk-hsdma.txt b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt +new file mode 100644 +index 000000000000..4bb317359dc6 +--- /dev/null ++++ b/Documentation/devicetree/bindings/dma/mtk-hsdma.txt +@@ -0,0 +1,33 @@ ++MediaTek High-Speed DMA Controller ++================================== ++ ++This device follows the generic DMA bindings defined in dma/dma.txt. ++ ++Required properties: ++ ++- compatible: Must be one of ++ "mediatek,mt7622-hsdma": for MT7622 SoC ++ "mediatek,mt7623-hsdma": for MT7623 SoC ++- reg: Should contain the register's base address and length. ++- interrupts: Should contain a reference to the interrupt used by this ++ device. ++- clocks: Should be the clock specifiers corresponding to the entry in ++ clock-names property. ++- clock-names: Should contain "hsdma" entries. ++- power-domains: Phandle to the power domain that the device is part of ++- #dma-cells: The length of the DMA specifier, must be <1>. This one cell ++ in dmas property of a client device represents the channel ++ number. ++Example: ++ ++ hsdma: dma-controller@1b007000 { ++ compatible = "mediatek,mt7623-hsdma"; ++ reg = <0 0x1b007000 0 0x1000>; ++ interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>; ++ clocks = <ðsys CLK_ETHSYS_HSDMA>; ++ clock-names = "hsdma"; ++ power-domains = <&scpsys MT2701_POWER_DOMAIN_ETH>; ++ #dma-cells = <1>; ++ }; ++ ++DMA clients must use the format described in dma/dma.txt file. +-- +2.11.0 + |