On Thu, Mar 28, 2019 at 10:19:24AM +0800, Bibby Hsieh wrote: > Client hardware would send event to GCE hardware, > so #event-cells, mediatek,gce-event-names, mediatek,gce-events. > present the event. > > Signed-off-by: Bibby Hsieh <bibby.hs...@mediatek.com> > --- > Documentation/devicetree/bindings/mailbox/mtk-gce.txt | 17 ++++++++++++++--- > 1 file changed, 14 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt > b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt > index 1f7f8f2..2f175d6 100644 > --- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt > +++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt > @@ -21,12 +21,21 @@ Required properties: > priority: Priority of GCE thread. > atomic_exec: GCE processing continuous packets of commands in atomic > way. > +- #event-cells: Should be 1. > + <&phandle event_number> > + phandle: Label name of a gce node. > + event_number: the event number defined in 'dt-bindings/gce/mt8173-gce.h' > + or 'dt-binding/gce/mt8183-gce.h'.
You only need to have a #*-cells if the number is variable. What are 'events' here? Sounds like interrupts or MSI? > > 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 propertier for a client device: > +- mediatek,gce-event-names: the event name can be defined by user. > +- mediatek,gce-events: u32, the event number defined in > + 'dt-bindings/gce/mt8173-gce.h' or 'dt-binding/gce/mt8183-gce.h'. > > 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. > @@ -40,6 +49,7 @@ Example: > clocks = <&infracfg CLK_INFRA_GCE>; > clock-names = "gce"; > #mbox-cells = <3>; > + #event-cells = <1>; > }; > > Example for a client device: > @@ -49,8 +59,9 @@ Example for a client device: > 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-event-names = "rdma0_sof", > + "rsz0_sof"; > + mediatek,gce-events = <&gce CMDQ_EVENT_MDP_RDMA0_SOF>, > + <&gce CMDQ_EVENT_MDP_RSZ0_SOF>; > ... > }; > -- > 1.9.1 >
