From: Shruthi Sanil <shruthi.sanil@xxxxxxxxx> Add Device Tree bindings for the Timer IP, which can be used as clocksource and clockevent device in the Intel Keem Bay SoC. Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx> Signed-off-by: Shruthi Sanil <shruthi.sanil@xxxxxxxxx> --- .../bindings/timer/intel,keembay-timer.yaml | 125 ++++++++++++++++++ 1 file changed, 125 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml diff --git a/Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml b/Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml new file mode 100644 index 000000000000..333f137e39e0 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml @@ -0,0 +1,125 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/intel,keembay-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Intel Keem Bay SoC Timers + +maintainers: + - Shruthi Sanil <shruthi.sanil@xxxxxxxxx> + +description: | + The Intel Keem Bay timer IP supports 1 free running counter and 8 timers. + Each timer is capable of generating inividual interrupt. + Both the features are enabled through the timer general config register. + + The parent node represents the common general configuration details and + the child nodes represents the counter and timers. + +properties: + compatible: + items: + - enum: + - intel,keembay-gpt-creg + - const: simple-mfd + + reg: + description: General configuration register address and length. + maxItems: 1 + + ranges: true + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + +required: + - compatible + - reg + - ranges + - "#address-cells" + - "#size-cells" + +patternProperties: + "^counter@[0-9a-f]+$": + description: Properties for Intel Keem Bay counter. + type: object + properties: + compatible: + items: + - enum: + - intel,keembay-counter + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + required: + - compatible + - reg + - clocks + + "^timer@[0-9a-f]+$": + description: Properties for Intel Keem Bay timer + type: object + properties: + compatible: + items: + - enum: + - intel,keembay-timer + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + required: + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + #define KEEM_BAY_A53_TIM + + soc { + #address-cells = <0x2>; + #size-cells = <0x2>; + + gpt@20331000 { + compatible = "intel,keembay-gpt-creg", "simple-mfd"; + reg = <0x0 0x20331000 0x0 0xc>; + ranges = <0x0 0x0 0x20330000 0xF0>; + #address-cells = <0x1>; + #size-cells = <0x1>; + + counter@e8 { + compatible = "intel,keembay-counter"; + reg = <0xe8 0x8>; + clocks = <&scmi_clk KEEM_BAY_A53_TIM>; + }; + + timer@30 { + compatible = "intel,keembay-timer"; + reg = <0x30 0xc>; + interrupts = <GIC_SPI 0x5 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&scmi_clk KEEM_BAY_A53_TIM>; + }; + }; + }; + +... -- 2.17.1
