| Message ID | 1427917039-43206-4-git-send-email-d-gerlach@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, * Dave Gerlach <d-gerlach@ti.com> [150401 12:38]: > Add the device tree bindings document for the TI Wakeup M3 remote > processor devices on AM33xx and AM43xx SoCs. These devices are used > to offload low-level power management functionality, and are handled > by the wkup_m3 remoteproc driver. > > Signed-off-by: Suman Anna <s-anna@ti.com> > Signed-off-by: Dave Gerlach <d-gerlach@ti.com> This binding looks OK to me now, thanks for updating it: Acked-by: Tony Lindgren <tony@atomide.com> > --- > .../bindings/remoteproc/wkup_m3_rproc.txt | 52 ++++++++++++++++++++++ > 1 file changed, 52 insertions(+) > create mode 100644 Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt > > diff --git a/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt > new file mode 100644 > index 0000000..3a70073 > --- /dev/null > +++ b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt > @@ -0,0 +1,52 @@ > +TI Wakeup M3 Remoteproc Driver > +============================== > + > +The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor > +(commonly referred to as Wakeup M3 or CM3) to help with various low power tasks > +that cannot be controlled from the MPU. This CM3 processor requires a firmware > +binary to accomplish this. The wkup_m3 remoteproc driver handles the loading of > +the firmware and booting of the CM3. > + > +Wkup M3 Device Node: > +==================== > +A wkup_m3 device node is used to represent the Wakeup M3 processor instance > +within the SoC. It is added as a child node of the parent interconnect bus > +(l4_wkup) through which it is accessible to the MPU. > + > +Required properties: > +-------------------- > +- compatible: Should be one of, > + "ti,am3352-wkup-m3" for AM33xx SoCs > + "ti,am4372-wkup-m3" for AM43xx SoCs > +- reg: Should contain the address ranges for the two internal > + memory regions, UMEM and DMEM. The parent node should > + provide an appropriate ranges property for properly > + translating these into bus addresses. > +- reg-names: Contains the corresponding names for the two memory > + regions. These should be named "umem" & "dmem". > +- ti,hwmods: Name of the hwmod associated with the wkupm3 device. > +- ti,pm-firmware: Name of firmware file to be used for loading and > + booting the wkup_m3 remote processor. > + > +Example: > +-------- > +/* AM33xx */ > +ocp { > + l4_wkup: l4_wkup@44c00000 { > + compatible = "am335-l4-wkup", "simple-bus"; > + ranges = <0 0x44c00000 0x400000>; > + #address-cells = <1>; > + #size-cells = <1>; > + > + wkup_m3: wkup_m3@100000 { > + compatible = "ti,am3352-wkup-m3"; > + reg = <0x100000 0x4000>, > + <0x180000 0x2000>; > + reg-names = "umem", "dmem"; > + ti,hwmods = "wkup_m3"; > + ti,pm-firmware = "am335x-pm-firmware.elf"; > + }; > + }; > + > + ... > +}; > -- > 2.3.0 >
diff --git a/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt new file mode 100644 index 0000000..3a70073 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/wkup_m3_rproc.txt @@ -0,0 +1,52 @@ +TI Wakeup M3 Remoteproc Driver +============================== + +The TI AM33xx and AM43xx family of devices use a small Cortex M3 co-processor +(commonly referred to as Wakeup M3 or CM3) to help with various low power tasks +that cannot be controlled from the MPU. This CM3 processor requires a firmware +binary to accomplish this. The wkup_m3 remoteproc driver handles the loading of +the firmware and booting of the CM3. + +Wkup M3 Device Node: +==================== +A wkup_m3 device node is used to represent the Wakeup M3 processor instance +within the SoC. It is added as a child node of the parent interconnect bus +(l4_wkup) through which it is accessible to the MPU. + +Required properties: +-------------------- +- compatible: Should be one of, + "ti,am3352-wkup-m3" for AM33xx SoCs + "ti,am4372-wkup-m3" for AM43xx SoCs +- reg: Should contain the address ranges for the two internal + memory regions, UMEM and DMEM. The parent node should + provide an appropriate ranges property for properly + translating these into bus addresses. +- reg-names: Contains the corresponding names for the two memory + regions. These should be named "umem" & "dmem". +- ti,hwmods: Name of the hwmod associated with the wkupm3 device. +- ti,pm-firmware: Name of firmware file to be used for loading and + booting the wkup_m3 remote processor. + +Example: +-------- +/* AM33xx */ +ocp { + l4_wkup: l4_wkup@44c00000 { + compatible = "am335-l4-wkup", "simple-bus"; + ranges = <0 0x44c00000 0x400000>; + #address-cells = <1>; + #size-cells = <1>; + + wkup_m3: wkup_m3@100000 { + compatible = "ti,am3352-wkup-m3"; + reg = <0x100000 0x4000>, + <0x180000 0x2000>; + reg-names = "umem", "dmem"; + ti,hwmods = "wkup_m3"; + ti,pm-firmware = "am335x-pm-firmware.elf"; + }; + }; + + ... +};