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| Started by | Hugues Fruchet <hugues.fruchet@st.com> |
|---|---|
| First post | 2017-04-04 17:50 +0200 |
| Last post | 2017-04-10 17:30 +0200 |
| Articles | 2 — 2 participants |
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[PATCH v3 1/8] dt-bindings: Document STM32 DCMI bindings Hugues Fruchet <hugues.fruchet@st.com> - 2017-04-04 17:50 +0200
Re: [PATCH v3 1/8] dt-bindings: Document STM32 DCMI bindings Rob Herring <robh@kernel.org> - 2017-04-10 17:30 +0200
| From | Hugues Fruchet <hugues.fruchet@st.com> |
|---|---|
| Date | 2017-04-04 17:50 +0200 |
| Subject | [PATCH v3 1/8] dt-bindings: Document STM32 DCMI bindings |
| Message-ID | <tsySt-6KL-1@gated-at.bofh.it> |
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
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>;
+ };
+ };
+ };
+
--
1.9.1
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| From | Rob Herring <robh@kernel.org> |
|---|---|
| Date | 2017-04-10 17:30 +0200 |
| Message-ID | <tuJqq-2rm-35@gated-at.bofh.it> |
| In reply to | #1616126 |
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
>
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