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46 lines
1.6 KiB
46 lines
1.6 KiB
BCM2835 PM (Power domains, watchdog) |
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The PM block controls power domains and some reset lines, and includes |
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a watchdog timer. This binding supersedes the brcm,bcm2835-pm-wdt |
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binding which covered some of PM's register range and functionality. |
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Required properties: |
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- compatible: Should be "brcm,bcm2835-pm" |
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- reg: Specifies base physical address and size of the two |
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register ranges ("PM" and "ASYNC_BRIDGE" in that |
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order) |
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- clocks: a) v3d: The V3D clock from CPRMAN |
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b) peri_image: The PERI_IMAGE clock from CPRMAN |
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c) h264: The H264 clock from CPRMAN |
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d) isp: The ISP clock from CPRMAN |
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- #reset-cells: Should be 1. This property follows the reset controller |
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bindings[1]. |
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- #power-domain-cells: Should be 1. This property follows the power domain |
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bindings[2]. |
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Optional properties: |
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- timeout-sec: Contains the watchdog timeout in seconds |
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- system-power-controller: Whether the watchdog is controlling the |
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system power. This node follows the power controller bindings[3]. |
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[1] Documentation/devicetree/bindings/reset/reset.txt |
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[2] Documentation/devicetree/bindings/power/power-domain.yaml |
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[3] Documentation/devicetree/bindings/power/power-controller.txt |
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Example: |
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pm { |
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compatible = "brcm,bcm2835-pm", "brcm,bcm2835-pm-wdt"; |
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#power-domain-cells = <1>; |
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#reset-cells = <1>; |
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reg = <0x7e100000 0x114>, |
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<0x7e00a000 0x24>; |
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clocks = <&clocks BCM2835_CLOCK_V3D>, |
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<&clocks BCM2835_CLOCK_PERI_IMAGE>, |
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<&clocks BCM2835_CLOCK_H264>, |
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<&clocks BCM2835_CLOCK_ISP>; |
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clock-names = "v3d", "peri_image", "h264", "isp"; |
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system-power-controller; |
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};
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