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.hs...@mediatek.com>
Reviewed-by: Rob Herring <r...@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
