On Wed, Jun 29, 2022 at 11:58:59PM +0530, Kartik wrote: > The Tegra186 timer provides ten 29-bit timer counters and one 32-bit > timestamp counter. The Tegra234 timer provides sixteen 29-bit timer > counters and one 32-bit timestamp counter. Each NV timer selects its > timing reference signal from the 1 MHz reference generated by USEC, > TSC or either clk_m or OSC. Each TMR can be programmed to generate > one-shot, periodic, or watchdog interrupts. > > Signed-off-by: Kartik <kkartik@xxxxxxxxxx> > --- > .../bindings/timer/nvidia,tegra186-timer.yaml | 111 ++++++++++++++++++ > 1 file changed, 111 insertions(+) > create mode 100644 Documentation/devicetree/bindings/timer/nvidia,tegra186-timer.yaml > > diff --git a/Documentation/devicetree/bindings/timer/nvidia,tegra186-timer.yaml b/Documentation/devicetree/bindings/timer/nvidia,tegra186-timer.yaml > new file mode 100644 > index 000000000000..5dc091532cd7 > --- /dev/null > +++ b/Documentation/devicetree/bindings/timer/nvidia,tegra186-timer.yaml > @@ -0,0 +1,111 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: "http://devicetree.org/schemas/timer/nvidia,tegra186-timer.yaml#"; > +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; > + > +title: NVIDIA Tegra186 timer > + > +maintainers: > + - Thierry Reding <treding@xxxxxxxxxx> > + > +description: > > + The Tegra timer provides 29-bit timer counters and a 32-bit timestamp > + counter. Each NV timer selects its timing reference signal from the 1 MHz > + reference generated by USEC, TSC or either clk_m or OSC. Each TMR can be > + programmed to generate one-shot, periodic, or watchdog interrupts. > + > + > +properties: > + compatible: > + oneOf: > + - const: nvidia,tegra186-timer > + description: > > + The Tegra186 timer provides ten 29-bit timer counters. > + - const: nvidia,tegra234-timer > + description: > > + The Tegra234 timer provides sixteen 29-bit timer counters. > + > + reg: > + maxItems: 1 > + > + interrupts: true > + > +allOf: > + - if: > + properties: > + compatible: > + contains: > + const: nvidia,tegra186-timer > + then: > + properties: > + interrupts: > + minItems: 1 > + maxItems: 10 > + description: > > + A list of 10 interrupts; one per each timer channels 0 through 9. The schema says it is a list of 1 to 10 interrupts. Which is it. Surely the h/w is fixed. If so, drop 'minItems' and the first sentence. > + > + - if: > + properties: > + compatible: > + contains: > + const: nvidia,tegra234-timer > + then: > + properties: > + interrupts: > + minItems: 1 > + maxItems: 16 > + description: > > + A list of 16 interrupts; one per each timer channels 0 through 15. ditto > + > +required: > + - compatible > + - reg > + - interrupts > + > +additionalProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + timer@3010000 { > + compatible = "nvidia,tegra186-timer"; > + reg = <0x03010000 0x000e0000>; > + interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>; > + }; > + > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/interrupt-controller/irq.h> > + > + timer@2080000 { > + compatible = "nvidia,tegra234-timer"; > + reg = <0x02080000 0x00121000>; > + interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>, > + <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>; > + }; > -- > 2.17.1 > >
