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    SubjectRe: [PATCH v6 03/12] dt-binding: gce: add binding for gce subsys property
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    Hi, Bibby:

    On Thu, 2019-05-16 at 17:02 +0800, Bibby Hsieh wrote:
    > tcmdq driver provide a function that get the relationship

    What is 'tcmdq'?

    > of sub system number from device node for client.
    > add specification for #subsys-cells, mediatek,gce-subsys.

    The property name is mediatek,gce-client-reg.

    Regards,
    CK

    >
    > Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
    > ---
    > .../devicetree/bindings/mailbox/mtk-gce.txt | 15 ++++++++++++---
    > 1 file changed, 12 insertions(+), 3 deletions(-)
    >
    > diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    > index 1f7f8f2a3f49..dceab63ccd06 100644
    > --- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    > +++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
    > @@ -21,11 +21,19 @@ Required properties:
    > priority: Priority of GCE thread.
    > atomic_exec: GCE processing continuous packets of commands in atomic
    > way.
    > +- #subsys-cells: Should be 3.
    > + <&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.
    >
    > 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
    > +Optional properties for a client device:
    > +- mediatek,gce-client-reg: u32, specify the sub-system id which is corresponding
    > to the register address.
    >
    > Some vaules of properties are defined in 'dt-bindings/gce/mt8173-gce.h'
    > @@ -40,6 +48,7 @@ Example:
    > clocks = <&infracfg CLK_INFRA_GCE>;
    > clock-names = "gce";
    > #mbox-cells = <3>;
    > + #subsys-cells = <3>;
    > };
    >
    > Example for a client device:
    > @@ -48,9 +57,9 @@ 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>;
    > ...
    > };


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