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Subject[PATCH v2 02/10] dt-binding: gce: add binding for gce event property
Date
cmdq driver provide a function that get event number
from device node for client.
add specification for #event-cells,
mediatek,gce-event-names, mediatek,gce-events.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
Documentation/devicetree/bindings/mailbox/mtk-gce.txt | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
index 9c0d982..812698f 100644
--- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
+++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
@@ -21,12 +21,20 @@ 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'.

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.
+- 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.
@@ -41,6 +49,7 @@ Example:
clock-names = "gce";
thread-num = CMDQ_THR_MAX_COUNT;
#mbox-cells = <3>;
+ #event-cells = <1>;
};

Example for a client device:
@@ -50,8 +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
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