| Message ID | 1491320678-17246-2-git-send-email-hugues.fruchet@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Apr 04, 2017 at 05:44:31PM +0200, Hugues Fruchet wrote: > This adds documentation of device tree bindings for the STM32 DCMI > (Digital Camera Memory Interface). > > Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com> > --- > .../devicetree/bindings/media/st,stm32-dcmi.txt | 46 ++++++++++++++++++++++ > 1 file changed, 46 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dcmi.txt One nit below, otherwise: Acked-by: Rob Herring <robh@kernel.org> > > diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt > new file mode 100644 > index 0000000..c0f6f4b > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt > @@ -0,0 +1,46 @@ > +STMicroelectronics STM32 Digital Camera Memory Interface (DCMI) > + > +Required properties: > +- compatible: "st,stm32-dcmi" > +- reg: physical base address and length of the registers set for the device > +- interrupts: should contain IRQ line for the DCMI > +- resets: reference to a reset controller, > + see Documentation/devicetree/bindings/reset/st,stm32-rcc.txt > +- clocks: list of clock specifiers, corresponding to entries in > + the clock-names property > +- clock-names: must contain "mclk", which is the DCMI peripherial clock > +- pinctrl: the pincontrol settings to configure muxing properly > + for pins that connect to DCMI device. > + See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt. > +- dmas: phandle to DMA controller node, > + see Documentation/devicetree/bindings/dma/stm32-dma.txt > +- dma-names: must contain "tx", which is the transmit channel from DCMI to DMA > + > +DCMI supports a single port node with parallel bus. It should contain one > +'port' child node with child 'endpoint' node. Please refer to the bindings > +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. > + > +Example: > + > + dcmi: dcmi@50050000 { > + compatible = "st,stm32-dcmi"; > + reg = <0x50050000 0x400>; > + interrupts = <78>; > + resets = <&rcc STM32F4_AHB2_RESET(DCMI)>; > + clocks = <&rcc 0 STM32F4_AHB2_CLOCK(DCMI)>; > + clock-names = "mclk"; > + pinctrl-names = "default"; > + pinctrl-0 = <&dcmi_pins>; > + dmas = <&dma2 1 1 0x414 0x3>; > + dma-names = "tx"; > + port { > + dcmi_0: endpoint@0 { Unit address in not valid without a reg prop, so drop it. > + remote-endpoint = <...>; > + bus-width = <8>; > + hsync-active = <0>; > + vsync-active = <0>; > + pclk-sample = <1>; > + }; > + }; > + }; > + > -- > 1.9.1 >
diff --git a/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt new file mode 100644 index 0000000..c0f6f4b --- /dev/null +++ b/Documentation/devicetree/bindings/media/st,stm32-dcmi.txt @@ -0,0 +1,46 @@ +STMicroelectronics STM32 Digital Camera Memory Interface (DCMI) + +Required properties: +- compatible: "st,stm32-dcmi" +- reg: physical base address and length of the registers set for the device +- interrupts: should contain IRQ line for the DCMI +- resets: reference to a reset controller, + see Documentation/devicetree/bindings/reset/st,stm32-rcc.txt +- clocks: list of clock specifiers, corresponding to entries in + the clock-names property +- clock-names: must contain "mclk", which is the DCMI peripherial clock +- pinctrl: the pincontrol settings to configure muxing properly + for pins that connect to DCMI device. + See Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.txt. +- dmas: phandle to DMA controller node, + see Documentation/devicetree/bindings/dma/stm32-dma.txt +- dma-names: must contain "tx", which is the transmit channel from DCMI to DMA + +DCMI supports a single port node with parallel bus. It should contain one +'port' child node with child 'endpoint' node. Please refer to the bindings +defined in Documentation/devicetree/bindings/media/video-interfaces.txt. + +Example: + + dcmi: dcmi@50050000 { + compatible = "st,stm32-dcmi"; + reg = <0x50050000 0x400>; + interrupts = <78>; + resets = <&rcc STM32F4_AHB2_RESET(DCMI)>; + clocks = <&rcc 0 STM32F4_AHB2_CLOCK(DCMI)>; + clock-names = "mclk"; + pinctrl-names = "default"; + pinctrl-0 = <&dcmi_pins>; + dmas = <&dma2 1 1 0x414 0x3>; + dma-names = "tx"; + port { + dcmi_0: endpoint@0 { + remote-endpoint = <...>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <0>; + pclk-sample = <1>; + }; + }; + }; +
This adds documentation of device tree bindings for the STM32 DCMI (Digital Camera Memory Interface). Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com> --- .../devicetree/bindings/media/st,stm32-dcmi.txt | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/st,stm32-dcmi.txt