| Message ID | 1565164139-21886-2-git-send-email-t-kristo@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | soc: ti: Add OMAP PRM driver | expand |
On 07/08/19 1:18 PM, Tero Kristo wrote: > Add new binding for OMAP PRM (Power and Reset Manager) instances. Each > of these will act as a power domain controller and potentially as a reset > provider. > > Signed-off-by: Tero Kristo <t-kristo@ti.com> > --- > .../devicetree/bindings/arm/omap/prm-inst.txt | 24 ++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/omap/prm-inst.txt > > diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt > new file mode 100644 > index 0000000..e0ae87b > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt > @@ -0,0 +1,24 @@ > +OMAP PRM instance bindings > + > +Power and Reset Manager is an IP block on OMAP family of devices which > +handle the power domains and their current state, and provide reset > +handling for the domains and/or separate IP blocks under the power domain > +hierarchy. > + > +Required properties: > +- compatible: Must be one of: > + "ti,am3-prm-inst" > + "ti,am4-prm-inst" > + "ti,omap4-prm-inst" > + "ti,omap5-prm-inst" > + "ti,dra7-prm-inst" > +- reg: Contains PRM instance register address range > + (base address and length) How about reset-cells property, Isn't that a mandatory property? > + > +Example: > + > +prm_dsp2: prm@1b00 { > + compatible = "ti,dra7-prm-inst"; > + reg = <0x1b00 0x40>; > + #reset-cells = <1>; > +}; >
On 08/08/2019 07:35, Keerthy wrote: > > > On 07/08/19 1:18 PM, Tero Kristo wrote: >> Add new binding for OMAP PRM (Power and Reset Manager) instances. Each >> of these will act as a power domain controller and potentially as a reset >> provider. >> >> Signed-off-by: Tero Kristo <t-kristo@ti.com> >> --- >> .../devicetree/bindings/arm/omap/prm-inst.txt | 24 >> ++++++++++++++++++++++ >> 1 file changed, 24 insertions(+) >> create mode 100644 >> Documentation/devicetree/bindings/arm/omap/prm-inst.txt >> >> diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >> b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >> new file mode 100644 >> index 0000000..e0ae87b >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >> @@ -0,0 +1,24 @@ >> +OMAP PRM instance bindings >> + >> +Power and Reset Manager is an IP block on OMAP family of devices which >> +handle the power domains and their current state, and provide reset >> +handling for the domains and/or separate IP blocks under the power >> domain >> +hierarchy. >> + >> +Required properties: >> +- compatible: Must be one of: >> + "ti,am3-prm-inst" >> + "ti,am4-prm-inst" >> + "ti,omap4-prm-inst" >> + "ti,omap5-prm-inst" >> + "ti,dra7-prm-inst" >> +- reg: Contains PRM instance register address range >> + (base address and length) > > How about reset-cells property, Isn't that a mandatory property? It is optional, but you are right, should be added to this. -Tero > >> + >> +Example: >> + >> +prm_dsp2: prm@1b00 { >> + compatible = "ti,dra7-prm-inst"; >> + reg = <0x1b00 0x40>; >> + #reset-cells = <1>; >> +}; >> -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
Hi Tero, On 8/19/19 4:28 AM, Tero Kristo wrote: > On 08/08/2019 07:35, Keerthy wrote: >> >> >> On 07/08/19 1:18 PM, Tero Kristo wrote: >>> Add new binding for OMAP PRM (Power and Reset Manager) instances. Each >>> of these will act as a power domain controller and potentially as a >>> reset >>> provider. >>> >>> Signed-off-by: Tero Kristo <t-kristo@ti.com> >>> --- >>> .../devicetree/bindings/arm/omap/prm-inst.txt | 24 >>> ++++++++++++++++++++++ >>> 1 file changed, 24 insertions(+) >>> create mode 100644 >>> Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>> >>> diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>> b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>> new file mode 100644 >>> index 0000000..e0ae87b >>> --- /dev/null >>> +++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>> @@ -0,0 +1,24 @@ >>> +OMAP PRM instance bindings >>> + >>> +Power and Reset Manager is an IP block on OMAP family of devices which >>> +handle the power domains and their current state, and provide reset >>> +handling for the domains and/or separate IP blocks under the power >>> domain >>> +hierarchy. So, I see that you are adding these as flat nodes directly under the prm nodes where we have the clocks and clock_domains. Are you anticipating a single DT node and/or driver managing both power-domains and resets? >>> + >>> +Required properties: >>> +- compatible: Must be one of: >>> + "ti,am3-prm-inst" >>> + "ti,am4-prm-inst" >>> + "ti,omap4-prm-inst" >>> + "ti,omap5-prm-inst" >>> + "ti,dra7-prm-inst" What about OMAP2, OMAP3, DM814x, DM816x? regards Suman >>> +- reg: Contains PRM instance register address range >>> + (base address and length) >> >> How about reset-cells property, Isn't that a mandatory property? > > It is optional, but you are right, should be added to this. > > -Tero > >> >>> + >>> +Example: >>> + >>> +prm_dsp2: prm@1b00 { >>> + compatible = "ti,dra7-prm-inst"; >>> + reg = <0x1b00 0x40>; >>> + #reset-cells = <1>; >>> +}; >>> > > -- > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. > Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
On 20.8.2019 0.28, Suman Anna wrote: > Hi Tero, > > On 8/19/19 4:28 AM, Tero Kristo wrote: >> On 08/08/2019 07:35, Keerthy wrote: >>> >>> >>> On 07/08/19 1:18 PM, Tero Kristo wrote: >>>> Add new binding for OMAP PRM (Power and Reset Manager) instances. Each >>>> of these will act as a power domain controller and potentially as a >>>> reset >>>> provider. >>>> >>>> Signed-off-by: Tero Kristo <t-kristo@ti.com> >>>> --- >>>> .../devicetree/bindings/arm/omap/prm-inst.txt | 24 >>>> ++++++++++++++++++++++ >>>> 1 file changed, 24 insertions(+) >>>> create mode 100644 >>>> Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>>> >>>> diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>>> b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>>> new file mode 100644 >>>> index 0000000..e0ae87b >>>> --- /dev/null >>>> +++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt >>>> @@ -0,0 +1,24 @@ >>>> +OMAP PRM instance bindings >>>> + >>>> +Power and Reset Manager is an IP block on OMAP family of devices which >>>> +handle the power domains and their current state, and provide reset >>>> +handling for the domains and/or separate IP blocks under the power >>>> domain >>>> +hierarchy. > > So, I see that you are adding these as flat nodes directly under the prm > nodes where we have the clocks and clock_domains. Are you anticipating a > single DT node and/or driver managing both power-domains and resets? Single DT node + driver for both power-domains / resets. You can probably see from the driver code that the reset probing is called separately from the main probe function; power domain support should be added in similar manner under it. > >>>> + >>>> +Required properties: >>>> +- compatible: Must be one of: >>>> + "ti,am3-prm-inst" >>>> + "ti,am4-prm-inst" >>>> + "ti,omap4-prm-inst" >>>> + "ti,omap5-prm-inst" >>>> + "ti,dra7-prm-inst" > > What about OMAP2, OMAP3, DM814x, DM816x? OMAP2/3 architectures are slightly different beast to tackle, so planning to work on those later on. -Tero > > regards > Suman > >>>> +- reg: Contains PRM instance register address range >>>> + (base address and length) >>> >>> How about reset-cells property, Isn't that a mandatory property? >> >> It is optional, but you are right, should be added to this. >> >> -Tero >> >>> >>>> + >>>> +Example: >>>> + >>>> +prm_dsp2: prm@1b00 { >>>> + compatible = "ti,dra7-prm-inst"; >>>> + reg = <0x1b00 0x40>; >>>> + #reset-cells = <1>; >>>> +}; >>>> >> >> -- > -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt new file mode 100644 index 0000000..e0ae87b --- /dev/null +++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt @@ -0,0 +1,24 @@ +OMAP PRM instance bindings + +Power and Reset Manager is an IP block on OMAP family of devices which +handle the power domains and their current state, and provide reset +handling for the domains and/or separate IP blocks under the power domain +hierarchy. + +Required properties: +- compatible: Must be one of: + "ti,am3-prm-inst" + "ti,am4-prm-inst" + "ti,omap4-prm-inst" + "ti,omap5-prm-inst" + "ti,dra7-prm-inst" +- reg: Contains PRM instance register address range + (base address and length) + +Example: + +prm_dsp2: prm@1b00 { + compatible = "ti,dra7-prm-inst"; + reg = <0x1b00 0x40>; + #reset-cells = <1>; +};
Add new binding for OMAP PRM (Power and Reset Manager) instances. Each of these will act as a power domain controller and potentially as a reset provider. Signed-off-by: Tero Kristo <t-kristo@ti.com> --- .../devicetree/bindings/arm/omap/prm-inst.txt | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/omap/prm-inst.txt