| Message ID | 20201116171159.1735315-2-gregory.clement@bootlin.com |
|---|---|
| State | New |
| Headers | show |
| Series | Improve reset for ocelot and add support for new platfrom | expand |
On 16/11/2020 18:11:55+0100, Gregory CLEMENT wrote: > From: Lars Povlsen <lars.povlsen@microchip.com> > > This documents the 'microchip,reset-switch-core' property in the > ocelot-reset driver. > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > --- > .../devicetree/bindings/power/reset/ocelot-reset.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt > index 4d530d815484..20fff03753ad 100644 > --- a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt > +++ b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt > @@ -9,9 +9,15 @@ microchip Sparx5 armv8 SoC's. > Required Properties: > - compatible: "mscc,ocelot-chip-reset" or "microchip,sparx5-chip-reset" > > +Optional properties: > +- microchip,reset-switch-core : Perform a switch core reset at the > + time of driver load. This is may be used to initialize the switch > + core to a known state (before other drivers are loaded). > + If this is to be used by the switchdev driver, then I would simply register this reset as a proper reset controller (with the driver/reset API) and consume that from the switchdev driver. However, the switch may also be configured from userspace in existing products. In this case you'd have to expose a reset interface, either from the drivers/reset core or with a specific consumer. My point is that this property is not necessary.
diff --git a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt index 4d530d815484..20fff03753ad 100644 --- a/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt +++ b/Documentation/devicetree/bindings/power/reset/ocelot-reset.txt @@ -9,9 +9,15 @@ microchip Sparx5 armv8 SoC's. Required Properties: - compatible: "mscc,ocelot-chip-reset" or "microchip,sparx5-chip-reset" +Optional properties: +- microchip,reset-switch-core : Perform a switch core reset at the + time of driver load. This is may be used to initialize the switch + core to a known state (before other drivers are loaded). + Example: reset@1070008 { compatible = "mscc,ocelot-chip-reset"; reg = <0x1070008 0x4>; + microchip,reset-switch-core; };