On Fri, Jun 12, 2020 at 04:18:30PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding@xxxxxxxxxx>
>
> Document the interconnects property that is used to describe the paths
> from and to system memory from and to the BPMP.
>
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
> ---
> .../firmware/nvidia,tegra186-bpmp.yaml | 21 +++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml b/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
> index 0e4d51ba7aa1..fd642eeb8dde 100644
> --- a/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
> +++ b/Documentation/devicetree/bindings/firmware/nvidia,tegra186-bpmp.yaml
> @@ -43,6 +43,21 @@ properties:
> - enum:
> - nvidia,tegra186-bpmp
>
> + interconnects:
> + description: A list of phandle and specifier pairs that describe the
> + interconnect paths to and from the BPMP.
> + $ref: "/schemas/types.yaml#/definitions/phandle-array"
Again, don't re-define standard properties.
> +
> + interconnect-names:
> + description: One string for each pair of phandle and specifier in the
> + "interconnects" property.
> + $ref: "/schemas/types.yaml#/definitions/string-array"
> + items:
> + - const: read
> + - const: write
> + - const: dma-mem # dma-read
> + - const: dma-write
> +
> iommus:
> description: |
> The phandle of the IOMMU and the IOMMU specifier. See ../iommu/iommu.txt
> @@ -158,6 +173,12 @@ examples:
>
> bpmp {
> compatible = "nvidia,tegra186-bpmp";
> + interconnects = <&mc TEGRA186_MEMORY_CLIENT_BPMPR &emc>,
> + <&mc TEGRA186_MEMORY_CLIENT_BPMPW &emc>,
> + <&mc TEGRA186_MEMORY_CLIENT_BPMPDMAR &emc>,
> + <&mc TEGRA186_MEMORY_CLIENT_BPMPDMAW &emc>;
> + interconnect-names = "read", "write", "dma-mem", "dma-write";
> +
> iommus = <&smmu TEGRA186_SID_BPMP>;
> mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB TEGRA_HSP_DB_MASTER_BPMP>;
> shmem = <&cpu_bpmp_tx &cpu_bpmp_rx>;
> --
> 2.24.1
>
