37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
GPIO reset controller
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=====================
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A GPIO reset controller controls a single GPIO that is connected to the reset
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pin of a peripheral IC. Please also refer to reset.txt in this directory for
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common reset controller binding usage.
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Required properties:
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- compatible: Should be "gpio-reset"
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- reset-gpios: A gpio used as reset line. The gpio specifier for this property
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depends on the gpio controller that provides the gpio.
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- #reset-cells: 0, see below
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Optional properties:
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- reset-delay-us: delay in microseconds. The gpio reset line will be asserted for
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this duration to reset.
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- reset-post-delay-ms: delay in milliseconds to wait after reset.
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- initially-in-reset: boolean. If not set, the initial state should be a
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deasserted reset line. If this property exists, the
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reset line should be kept in reset.
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example:
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sii902x_reset: gpio-reset {
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compatible = "gpio-reset";
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reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
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reset-delay-us = <10000>;
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initially-in-reset;
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#reset-cells = <0>;
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};
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/* Device with nRESET pin connected to GPIO5_0 */
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sii902x@39 {
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/* ... */
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resets = <&sii902x_reset>; /* active-low GPIO5_0, 10 ms delay */
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};
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