| Message ID | 9166f3acdc2a64e3f3ca1cd2e283005ee2df37c9.1582533919.git-series.maxime@cerno.tech (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/vc4: Support BCM2711 Display Pipeline | expand |
On Mon, Feb 24, 2020 at 10:06:08AM +0100, Maxime Ripard wrote: > The firmare running on the RPi VideoCore can be used to discover and > change the various clocks running in the BCM2711. Since devices will > need to use them through the DT, let's add a pretty simple binding. > > Cc: Michael Turquette <mturquette@baylibre.com> > Cc: Stephen Boyd <sboyd@kernel.org> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: linux-clk@vger.kernel.org > Cc: devicetree@vger.kernel.org > Signed-off-by: Maxime Ripard <maxime@cerno.tech> > --- > Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++++++++++++++++++++++ > 1 file changed, 39 insertions(+) > create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > > diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > new file mode 100644 > index 000000000000..d37bc311321d > --- /dev/null > +++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > @@ -0,0 +1,39 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: RaspberryPi Firmware Clocks Device Tree Bindings > + > +maintainers: > + - Maxime Ripard <mripard@kernel.org> > + > +properties: > + "#clock-cells": > + const: 1 > + > + compatible: > + const: raspberrypi,firmware-clocks > + > + raspberrypi,firmware: > + $ref: /schemas/types.yaml#/definitions/phandle > + description: > > + Phandle to the mailbox node to communicate with the firmware. Can't this be a child node of the phandle instead? Or just add '#clock-cells' to the firmware node. > + > +required: > + - "#clock-cells" > + - compatible > + - raspberrypi,firmware > + > +additionalProperties: false > + > +examples: > + - | > + firmware_clocks: firmware-clocks { > + compatible = "raspberrypi,firmware-clocks"; > + raspberrypi,firmware = <&firmware>; > + #clock-cells = <1>; > + }; > + > +... > -- > git-series 0.9.1 > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Quoting Rob Herring (2020-02-25 10:16:54) > On Mon, Feb 24, 2020 at 10:06:08AM +0100, Maxime Ripard wrote: > > The firmare running on the RPi VideoCore can be used to discover and > > change the various clocks running in the BCM2711. Since devices will > > need to use them through the DT, let's add a pretty simple binding. > > > > Cc: Michael Turquette <mturquette@baylibre.com> > > Cc: Stephen Boyd <sboyd@kernel.org> > > Cc: Rob Herring <robh+dt@kernel.org> > > Cc: linux-clk@vger.kernel.org > > Cc: devicetree@vger.kernel.org > > Signed-off-by: Maxime Ripard <maxime@cerno.tech> > > --- > > Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 39 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > > > > diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > > new file mode 100644 > > index 000000000000..d37bc311321d > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml > > @@ -0,0 +1,39 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: RaspberryPi Firmware Clocks Device Tree Bindings > > + > > +maintainers: > > + - Maxime Ripard <mripard@kernel.org> > > + > > +properties: > > + "#clock-cells": > > + const: 1 > > + > > + compatible: > > + const: raspberrypi,firmware-clocks > > + > > + raspberrypi,firmware: > > + $ref: /schemas/types.yaml#/definitions/phandle > > + description: > > > + Phandle to the mailbox node to communicate with the firmware. > > Can't this be a child node of the phandle instead? Or just add > '#clock-cells' to the firmware node. Yeah, just add the clock-cells to the firmware node unless that doesn't work for some reason?
diff --git a/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml new file mode 100644 index 000000000000..d37bc311321d --- /dev/null +++ b/Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/raspberrypi,firmware-clocks.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: RaspberryPi Firmware Clocks Device Tree Bindings + +maintainers: + - Maxime Ripard <mripard@kernel.org> + +properties: + "#clock-cells": + const: 1 + + compatible: + const: raspberrypi,firmware-clocks + + raspberrypi,firmware: + $ref: /schemas/types.yaml#/definitions/phandle + description: > + Phandle to the mailbox node to communicate with the firmware. + +required: + - "#clock-cells" + - compatible + - raspberrypi,firmware + +additionalProperties: false + +examples: + - | + firmware_clocks: firmware-clocks { + compatible = "raspberrypi,firmware-clocks"; + raspberrypi,firmware = <&firmware>; + #clock-cells = <1>; + }; + +...
The firmare running on the RPi VideoCore can be used to discover and change the various clocks running in the BCM2711. Since devices will need to use them through the DT, let's add a pretty simple binding. Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-clk@vger.kernel.org Cc: devicetree@vger.kernel.org Signed-off-by: Maxime Ripard <maxime@cerno.tech> --- Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/raspberrypi,firmware-clocks.yaml