| Message ID | 20170504200539.27027-4-bjorn.andersson@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
On Thu, May 04, 2017 at 01:05:38PM -0700, Bjorn Andersson wrote: > Add device tree binding documentation for the Qualcomm GLINK RPM, used > for communication with the Resource Power Management subsystem in > various Qualcomm SoCs. > > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> > --- > > Changes since v3: > - Transition doorbell to mailbox framework > > Changes since v2: > - Replace qcom,ipc syscon with a "doorbell" > > Changes since v1: > - None > > .../devicetree/bindings/soc/qcom/qcom,glink.txt | 73 ++++++++++++++++++++++ > 1 file changed, 73 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > > diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > new file mode 100644 > index 000000000000..e32198df0e9c > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > @@ -0,0 +1,73 @@ > +Qualcomm RPM GLINK binding > + > +This binding describes the Qualcomm RPM GLINK, a fifo based mechanism for > +communication with the Resource Power Management system on various Qualcomm > +platforms. > + > +- compatible: > + Usage: required > + Value type: <stringlist> > + Definition: must be "qcom,glink-rpm" > + > +- interrupts: > + Usage: required > + Value type: <prop-encoded-array> > + Definition: should specify the IRQ used by the remote processor to > + signal this processor about communication related events > + > +- qcom,rpm-msg-ram: > + Usage: required > + Value type: <prop-encoded-array> > + Definition: handle to RPM message memory resource > + > +- mboxes: > + Usage: required > + Value type: <prop-encoded-array> > + Definition: reference to the "rpm_hlos" mailbox in APCS, as described > + in mailbox/mailbox.txt > + > += GLINK DEVICES > +Each subnode of the GLINK node represent function tied to a virtual > +communication channel. The name of the nodes are not important. The properties > +of these nodes are defined by the individual bindings for the specific function > +- but must contain the following property: > + > +- qcom,glink-channels: > + Usage: required > + Value type: <stringlist> > + Definition: a list of channels tied to this function, used for matching > + the function to a set of virtual channels > + > += EXAMPLE > +The following example represents the GLINK RPM node on a MSM8996 device, with > +the function for the "rpm_request" channel defined, which is used for > +regualtors and root clocks. > + > + apcs_glb: apcs-glb@9820000 { mailbox@... Or does this block do other things? Otherwise, Acked-by: Rob Herring <robh@kernel.org> > + compatible = "qcom,msm8996-apcs-hmss-global"; > + reg = <0x9820000 0x1000>; > + > + #mbox-cells = <1>; > + }; > + > + rpm_msg_ram: memory@68000 { > + compatible = "qcom,rpm-msg-ram"; > + reg = <0x68000 0x6000>; > + }; > + > + rpm-glink { > + compatible = "qcom,glink-rpm"; > + > + interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>; > + > + qcom,rpm-msg-ram = <&rpm_msg_ram>; > + > + mboxes = <&apcs_glb 0>; > + > + rpm-requests { > + compatible = "qcom,rpm-msm8996"; > + qcom,glink-channels = "rpm_requests"; > + > + ... > + }; > + }; > -- > 2.12.0 > -- To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Mon 08 May 10:06 PDT 2017, Rob Herring wrote: > On Thu, May 04, 2017 at 01:05:38PM -0700, Bjorn Andersson wrote: > > Add device tree binding documentation for the Qualcomm GLINK RPM, used > > for communication with the Resource Power Management subsystem in > > various Qualcomm SoCs. > > > > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> > > --- > > > > Changes since v3: > > - Transition doorbell to mailbox framework > > > > Changes since v2: > > - Replace qcom,ipc syscon with a "doorbell" > > > > Changes since v1: > > - None > > > > .../devicetree/bindings/soc/qcom/qcom,glink.txt | 73 ++++++++++++++++++++++ > > 1 file changed, 73 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > > > > diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > > new file mode 100644 > > index 000000000000..e32198df0e9c > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt > > @@ -0,0 +1,73 @@ > > +Qualcomm RPM GLINK binding > > + > > +This binding describes the Qualcomm RPM GLINK, a fifo based mechanism for > > +communication with the Resource Power Management system on various Qualcomm > > +platforms. > > + > > +- compatible: > > + Usage: required > > + Value type: <stringlist> > > + Definition: must be "qcom,glink-rpm" > > + > > +- interrupts: > > + Usage: required > > + Value type: <prop-encoded-array> > > + Definition: should specify the IRQ used by the remote processor to > > + signal this processor about communication related events > > + > > +- qcom,rpm-msg-ram: > > + Usage: required > > + Value type: <prop-encoded-array> > > + Definition: handle to RPM message memory resource > > + > > +- mboxes: > > + Usage: required > > + Value type: <prop-encoded-array> > > + Definition: reference to the "rpm_hlos" mailbox in APCS, as described > > + in mailbox/mailbox.txt > > + > > += GLINK DEVICES > > +Each subnode of the GLINK node represent function tied to a virtual > > +communication channel. The name of the nodes are not important. The properties > > +of these nodes are defined by the individual bindings for the specific function > > +- but must contain the following property: > > + > > +- qcom,glink-channels: > > + Usage: required > > + Value type: <stringlist> > > + Definition: a list of channels tied to this function, used for matching > > + the function to a set of virtual channels > > + > > += EXAMPLE > > +The following example represents the GLINK RPM node on a MSM8996 device, with > > +the function for the "rpm_request" channel defined, which is used for > > +regualtors and root clocks. > > + > > + apcs_glb: apcs-glb@9820000 { > > mailbox@... Or does this block do other things? > So far it's just a mailbox, so I'll update this. > Otherwise, > > Acked-by: Rob Herring <robh@kernel.org> > Thanks, Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-remoteproc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt new file mode 100644 index 000000000000..e32198df0e9c --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt @@ -0,0 +1,73 @@ +Qualcomm RPM GLINK binding + +This binding describes the Qualcomm RPM GLINK, a fifo based mechanism for +communication with the Resource Power Management system on various Qualcomm +platforms. + +- compatible: + Usage: required + Value type: <stringlist> + Definition: must be "qcom,glink-rpm" + +- interrupts: + Usage: required + Value type: <prop-encoded-array> + Definition: should specify the IRQ used by the remote processor to + signal this processor about communication related events + +- qcom,rpm-msg-ram: + Usage: required + Value type: <prop-encoded-array> + Definition: handle to RPM message memory resource + +- mboxes: + Usage: required + Value type: <prop-encoded-array> + Definition: reference to the "rpm_hlos" mailbox in APCS, as described + in mailbox/mailbox.txt + += GLINK DEVICES +Each subnode of the GLINK node represent function tied to a virtual +communication channel. The name of the nodes are not important. The properties +of these nodes are defined by the individual bindings for the specific function +- but must contain the following property: + +- qcom,glink-channels: + Usage: required + Value type: <stringlist> + Definition: a list of channels tied to this function, used for matching + the function to a set of virtual channels + += EXAMPLE +The following example represents the GLINK RPM node on a MSM8996 device, with +the function for the "rpm_request" channel defined, which is used for +regualtors and root clocks. + + apcs_glb: apcs-glb@9820000 { + compatible = "qcom,msm8996-apcs-hmss-global"; + reg = <0x9820000 0x1000>; + + #mbox-cells = <1>; + }; + + rpm_msg_ram: memory@68000 { + compatible = "qcom,rpm-msg-ram"; + reg = <0x68000 0x6000>; + }; + + rpm-glink { + compatible = "qcom,glink-rpm"; + + interrupts = <GIC_SPI 168 IRQ_TYPE_EDGE_RISING>; + + qcom,rpm-msg-ram = <&rpm_msg_ram>; + + mboxes = <&apcs_glb 0>; + + rpm-requests { + compatible = "qcom,rpm-msm8996"; + qcom,glink-channels = "rpm_requests"; + + ... + }; + };
Add device tree binding documentation for the Qualcomm GLINK RPM, used for communication with the Resource Power Management subsystem in various Qualcomm SoCs. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> --- Changes since v3: - Transition doorbell to mailbox framework Changes since v2: - Replace qcom,ipc syscon with a "doorbell" Changes since v1: - None .../devicetree/bindings/soc/qcom/qcom,glink.txt | 73 ++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,glink.txt