| Message ID | 20180405160459.16693-3-ilina@codeaurora.org |
|---|---|
| State | Superseded, archived |
| Headers | show |
| Series | None | expand |
On Thu 05 Apr 09:04 PDT 2018, Lina Iyer wrote: > From: Mahesh Sivasubramanian <msivasub@codeaurora.org> > > Command DB provides information on shared resources like clocks, > regulators etc., probed at boot by the remote subsytem and made > available in shared memory. > > Cc: devicetree@vger.kernel.org > Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org> > Signed-off-by: Lina Iyer <ilina@codeaurora.org> > --- > > Changes in v6: > - Move to bindings/reserved-memory > - Remove indirection address and use only the actual reserved > memory > > Changes in v4: > - Fix unwanted capitalization > - Add reg property > --- > .../bindings/reserved-memory/qcom,cmd-db.txt | 37 ++++++++++++++++++++++ > 1 file changed, 37 insertions(+) > create mode 100644 Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt > > diff --git a/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt > new file mode 100644 > index 000000000000..d808ada474c1 > --- /dev/null > +++ b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt > @@ -0,0 +1,37 @@ > +Command DB > +--------- > + > +Command DB is a database that provides a mapping between resource key and the > +resource address for a system resource managed by a remote processor. The data > +is stored in a shared memory region and is loaded by the remote processor. > + > +Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for > +controlling shared resources. Depending on the board configuration the shared > +resource properties may change. These properties are dynamically probed by the > +remote processor and made available in the shared memory. > + > +The bindings for Command DB is specified in the reserved-memory section in > +devicetree. The devicetree representation of the command DB driver should be: > + > +Properties: > +- compatible: > + Usage: required > + Value type: <string> > + Definition: Should be "qcom,cmd-db" > + > +- reg: > + Usage: required > + Value type: <prop encoded array> > + Definition: The register address that points to the location of the > + Command DB in memory. Additionally, specify the address > + and size of the actual lacation in memory. The reg doesn't reference the indirection registers anymore, please update this. Apart from this, you have my: Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Regards, Bjorn -- To unsubscribe from this list: send the line "unsubscribe devicetree" 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/reserved-memory/qcom,cmd-db.txt b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt new file mode 100644 index 000000000000..d808ada474c1 --- /dev/null +++ b/Documentation/devicetree/bindings/reserved-memory/qcom,cmd-db.txt @@ -0,0 +1,37 @@ +Command DB +--------- + +Command DB is a database that provides a mapping between resource key and the +resource address for a system resource managed by a remote processor. The data +is stored in a shared memory region and is loaded by the remote processor. + +Some of the Qualcomm Technologies Inc SoC's have hardware accelerators for +controlling shared resources. Depending on the board configuration the shared +resource properties may change. These properties are dynamically probed by the +remote processor and made available in the shared memory. + +The bindings for Command DB is specified in the reserved-memory section in +devicetree. The devicetree representation of the command DB driver should be: + +Properties: +- compatible: + Usage: required + Value type: <string> + Definition: Should be "qcom,cmd-db" + +- reg: + Usage: required + Value type: <prop encoded array> + Definition: The register address that points to the location of the + Command DB in memory. Additionally, specify the address + and size of the actual lacation in memory. + +Example: + + reserved-memory { + [...] + qcom,cmd-db@85fe0000 { + reg = <0x0 0x85fe0000 0x0 0x20000>; + compatible = "qcom,cmd-db"; + }; + };