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    Subject[RESEND, PATCH v13 03/12] dt-binding: gce: add binding for gce client reg property
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    cmdq driver provide a function that get the relationship
    of sub system number from device node for client.
    add specification for #subsys-cells, mediatek,gce-client-reg.

    Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
    Reviewed-by: Rob Herring <robh@kernel.org>
    ---
    .../devicetree/bindings/mailbox/mtk-gce.txt | 16 ++++++++++++----
    1 file changed, 12 insertions(+), 4 deletions(-)

    diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    index 1f7f8f2a3f49..7b13787ab13d 100644
    --- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    +++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    @@ -25,8 +25,16 @@ Required properties:
    Required properties for a client device:
    - mboxes: Client use mailbox to communicate with GCE, it should have this
    property and list of phandle, mailbox specifiers.
    -- mediatek,gce-subsys: u32, specify the sub-system id which is corresponding
    - to the register address.
    +Optional properties for a client device:
    +- mediatek,gce-client-reg: Specify the sub-system id which is corresponding
    + to the register address, it should have this property and list of phandle,
    + sub-system specifiers.
    + <&phandle subsys_number start_offset size>
    + phandle: Label name of a gce node.
    + subsys_number: specify the sub-system id which is corresponding
    + to the register address.
    + start_offset: the start offset of register address that GCE can access.
    + size: the total size of register address that GCE can access.

    Some vaules of properties are defined in 'dt-bindings/gce/mt8173-gce.h'
    or 'dt-binding/gce/mt8183-gce.h'. Such as sub-system ids, thread priority, event ids.
    @@ -48,9 +56,9 @@ Example for a client device:
    compatible = "mediatek,mt8173-mmsys";
    mboxes = <&gce 0 CMDQ_THR_PRIO_LOWEST 1>,
    <&gce 1 CMDQ_THR_PRIO_LOWEST 1>;
    - mediatek,gce-subsys = <SUBSYS_1400XXXX>;
    mutex-event-eof = <CMDQ_EVENT_MUTEX0_STREAM_EOF
    CMDQ_EVENT_MUTEX1_STREAM_EOF>;
    -
    + mediatek,gce-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>,
    + <&gce SUBSYS_1401XXXX 0x2000 0x100>;
    ...
    };
    --
    2.18.0
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