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dt-bindings: clock: ti: Convert autoidle binding to yaml

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Autoidle clock is not an individual clock; it is always a derivate of some
basic clock like a gate, divider, or fixed-factor. This binding will be
referred in ti,divider-clock.yaml, and ti,fixed-factor-clock.yaml.

As all clocks don't support the autoidle feature e.g.,
in DRA77xx/AM57xx[1], dpll_abe_x2* and dpll_per_x2 don't have
autoidle, remove required properties from the binding.

Add the creator of the original binding as a maintainer.

[1] https://www.ti.com/lit/ug/spruhz6l/spruhz6l.pdf

Signed-off-by: Sukrut Bellary <sbellary@baylibre.com>
Link: https://lore.kernel.org/r/20250516081612.767559-2-sbellary@baylibre.com
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Sukrut Bellary 2025-05-16 01:16:10 -07:00 • committed by Stephen Boyd
parent 19272b37aa
commit 5ffe2d2f53
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2 changed files with 34 additions and 37 deletions
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37
Documentation/devicetree/bindings/clock/ti/autoidle.txt
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Binding for Texas Instruments autoidle clock.
This binding uses the common clock binding[1]. It assumes a register mapped
clock which can be put to idle automatically by hardware based on the usage
and a configuration bit setting. Autoidle clock is never an individual
clock, it is always a derivative of some basic clock like a gate, divider,
or fixed-factor.
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
Required properties:
- reg : offset for the register controlling the autoidle
- ti,autoidle-shift : bit shift of the autoidle enable bit
- ti,invert-autoidle-bit : autoidle is enabled by setting the bit to 0
Examples:
dpll_core_m4_ck: dpll_core_m4_ck {
#clock-cells = <0>;
compatible = "ti,divider-clock";
clocks = <&dpll_core_x2_ck>;
ti,max-div = <31>;
ti,autoidle-shift = <8>;
reg = <0x2d38>;
ti,index-starts-at-one;
ti,invert-autoidle-bit;
};
dpll_usb_clkdcoldo_ck: dpll_usb_clkdcoldo_ck {
#clock-cells = <0>;
compatible = "ti,fixed-factor-clock";
clocks = <&dpll_usb_ck>;
ti,clock-div = <1>;
ti,autoidle-shift = <8>;
reg = <0x01b4>;
ti,clock-mult = <1>;
ti,invert-autoidle-bit;
};

34
Documentation/devicetree/bindings/clock/ti/ti,autoidle.yaml Normal file
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@ -0,0 +1,34 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/ti/ti,autoidle.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI autoidle clock
maintainers:
- Tero Kristo <kristo@kernel.org>
- Sukrut Bellary <sbellary@baylibre.com>
description:
Some clocks in TI SoC support the autoidle feature. These properties are
applicable only if the clock supports autoidle feature. It assumes a register
mapped clock which can be put to idle automatically by hardware based on
usage and configuration bit setting. Autoidle clock is never an individual
clock, it is always a derivative of some basic clock like a gate, divider, or
fixed-factor.
properties:
ti,autoidle-shift:
$ref: /schemas/types.yaml#/definitions/uint32
description:
bit shift of the autoidle enable bit for the clock
maximum: 31
default: 0
ti,invert-autoidle-bit:
type: boolean
description:
autoidle is enabled by setting the bit to 0
additionalProperties: true