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Subject[PATCH v2 03/10] dt-binding: gce: add binding for gce subsys property
Date
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-subsys.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
---
Documentation/devicetree/bindings/mailbox/mtk-gce.txt | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
index 812698f..07b2adf 100644
--- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
+++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
@@ -26,6 +26,13 @@ Required properties:
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'.
+#subsys-cells: Should be 2.
+ <&phandle register_base_address subsys_number>
+ phandle: Label name of a gce node.
+ register_base_address: the register base address that client
+ want to write or read.
+ subsys_number: specify the sub-system id which is corresponding
+ to the register address.

Required properties for a client device:
- mboxes: Client use mailbox to communicate with GCE, it should have this
@@ -50,6 +57,7 @@ Example:
thread-num = CMDQ_THR_MAX_COUNT;
#mbox-cells = <3>;
#event-cells = <1>;
+ #subsys-cells = <2>;
};

Example for a client device:
@@ -58,7 +66,8 @@ 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>;
+ mediatek,gce-subsys = <&gce 0x14000000 SUBSYS_1400XXXX>,
+ <&gce 0x14010000 SUBSYS_1401XXXX>;
mediatek,gce-event-names = "rdma0_sof",
"rsz0_sof";
mediatek,gce-events = <&gce CMDQ_EVENT_MDP_RDMA0_SOF>,
--
1.9.1
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