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SubjectRe: [PATCH v2 1/3] dt-bindings: Document JZ47xx VPU auxiliary processor
Hi Rob,


Le mar. 20 août 2019 à 22:50, Rob Herring <robh@kernel.org> 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@crapouillou.net>
>> ---
>>
>> 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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