Re: [PATCH v2 1/3] dt-bindings: Document JZ47xx VPU auxiliary processor

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Hi Rob,


Le mar. 20 août 2019 à 22:50, Rob Herring <robh@xxxxxxxxxx> a écrit :
On Mon, Jul 29, 2019 at 02:31:07PM -0400, Paul Cercueil wrote:
Inside the Video Processing Unit (VPU) of the recent JZ47xx SoCs from
 Ingenic is a second Xburst MIPS CPU very similar to the main core.
 This document describes the devicetree bindings for this auxiliary
 processor.

 Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
 ---

 Notes:
     v2: Update TCSM0 address in example

.../bindings/remoteproc/ingenic,vpu.txt | 36 +++++++++++++++++++
  1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/ingenic,vpu.txt

diff --git a/Documentation/devicetree/bindings/remoteproc/ingenic,vpu.txt b/Documentation/devicetree/bindings/remoteproc/ingenic,vpu.txt
 new file mode 100644
 index 000000000000..576f9e582780
 --- /dev/null
 +++ b/Documentation/devicetree/bindings/remoteproc/ingenic,vpu.txt
 @@ -0,0 +1,36 @@
 +* Ingenic JZ47xx auxiliary processor
 +
+Inside the Video Processing Unit (VPU) of the recent JZ47xx SoCs from Ingenic
 +is a second Xburst MIPS CPU very similar to the main core.
+This document describes the devicetree bindings for this auxiliary processor.
 +
 +Required properties:
 +- compatible: Should be "ingenic,jz4770-vpu-rproc"
 +- reg: Must contain the registers location and length for:
 +  * the auxiliary processor,
 +  * the Tightly Coupled Shared Memory 0 (TCSM0),
 +  * the Tightly Coupled Shared Memory 1 (TCSM1),
 +  * the shared SRAM.
 +- reg-names: Must contain "aux", "tcsm0", "tcsm1", "sram".
 +- clocks: Clock specifier for the AUX and VPU clocks.
 +- clock-names: Must contain "aux", "vpu".
 +- interrupts: Interrupt specifier for the VPU hardware block.
 +
 +Example:
 +
 +vpu: cpu@132a0000 {

cpu is reserved for CPUs under /cpus/. Use video-codec or video-decoder
or ?? It's not clear what type of video processing this does.

Hardware decode and encode of mpeg-2 and h264. I guess I'll use 'video-decoder' then.



 +	compatible = "ingenic,jz4770-vpu-rproc";
 +
 +	reg = <0x132a0000 0x20 /* AUX */
 +		   0x132b0000 0x4000 /* TCSM0 */
 +		   0x132c0000 0xc000 /* TCSM1 */
 +		   0x132f0000 0x7000 /* SRAM */
 +	>;
 +	reg-names = "aux", "tcsm0", "tcsm1", "sram";
 +
 +	clocks = <&cgu JZ4770_CLK_AUX>, <&cgu JZ4770_CLK_VPU>;
 +	clock-names = "aux", "vpu";
 +
 +	interrupt-parent = <&cpuintc>;
 +	interrupts = <3>;
 +};
 --
 2.21.0.593.g511ec345e18







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