[PATCH v3 04/12] dt-binding: gce: add binding for gce subsys property

Bibby Hsieh
2019-03-28T02:19:25Z

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 | 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 2f175d6..755b30f 100644
--- a/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
+++ b/Documentation/devicetree/bindings/mailbox/mtk-gce.txt
@@ -26,13 +26,20 @@ 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 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
- to the register address.
Optional propertier for a client device:
+- mediatek,gce-client-reg: 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'.
@@ -50,6 +57,7 @@ Example:
clock-names = "gce";
#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-client-reg = <&gce SUBSYS_1400XXXX 0x3000 0x1000>,
+ <&gce SUBSYS_1401XXXX 0x2000 0x100>;
mediatek,gce-event-names = "rdma0_sof",
"rsz0_sof";
mediatek,gce-events = <&gce CMDQ_EVENT_MDP_RDMA0_SOF>,
--
1.9.1