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@xxxxxxxxxxxx> --- 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
