Document MediaTek I3C master DT bindings. Signed-off-by: Qii Wang <qii.wang@xxxxxxxxxxxx> --- .../devicetree/bindings/i3c/mtk,i3c-master.txt | 48 ++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt diff --git a/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt b/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt new file mode 100644 index 0000000..d32eda6 --- /dev/null +++ b/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt @@ -0,0 +1,48 @@ +Bindings for MediaTek I3C master block +===================================== + +Required properties: +-------------------- +- compatible: shall be "mediatek,i3c-master" +- reg: physical base address of the controller and apdma base, length of + memory mapped region. +- reg-names: shall be "main" for master controller and "dma" for apdma. +- interrupts: the interrupt line connected to this I3C master. +- clocks: shall reference the i3c and apdma clocks. +- clock-names: shall include "main" and "dma". + +Mandatory properties defined by the generic binding (see +Documentation/devicetree/bindings/i3c/i3c.txt for more details): + +- #address-cells: shall be set to 3 +- #size-cells: shall be set to 0 + +Optional properties defined by the generic binding (see +Documentation/devicetree/bindings/i3c/i3c.txt for more details): + +- i2c-scl-hz +- i3c-scl-hz + +I3C device connected on the bus follow the generic description (see +Documentation/devicetree/bindings/i3c/i3c.txt for more details). + +Example: + + i3c0: i3c@1100d000 { + compatible = "mediatek,i3c-master"; + reg = <0x1100d000 0x1000>, + <0x11000300 0x80>; + reg-names = "main", "dma"; + interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>; + clocks = <&infracfg CLK_INFRA_I3C0>, + <&infracfg CLK_INFRA_AP_DMA>; + clock-names = "main", "dma"; + #address-cells = <3>; + #size-cells = <0>; + i2c-scl-hz = <100000>; + + nunchuk: nunchuk@52 { + compatible = "nintendo,nunchuk"; + reg = <0x52 0x0 0x10>; + }; + }; -- 1.7.9.5