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.
> + 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
>
