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Message-ID: <Z/Yt75wCl5rl8JKP@dev-linux>
Date: Wed, 9 Apr 2025 01:21:03 -0700
From: Sukrut Bellary <sbellary@...libre.com>
To: Rob Herring <robh@...nel.org>
Cc: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Tero Kristo <kristo@...nel.org>,
Kevin Hilman <khilman@...libre.com>,
Andreas Kemnade <andreas@...nade.info>, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: clock: ti: Convert to yaml
On Fri, Apr 04, 2025 at 10:19:02AM -0500, Rob Herring wrote:
> On Thu, Apr 03, 2025 at 06:44:57PM -0700, Sukrut Bellary wrote:
> > Covert TI autoidle clock txt binding to yaml.
>
> Convert
>
> 2 patches in the series have the exact same subject. Really, nothing in
> all of the git history should ever repeat a subject. After all, you
> can't make the same change twice.
Thanks for the review.
I will fix this.
> >
> > 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.
> > Clean up the example to meet the current standards.
> >
> > 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@...libre.com>
> > ---
> > .../devicetree/bindings/clock/ti/autoidle.txt | 37 --------------
> > .../bindings/clock/ti/ti,autoidle.yaml | 49 +++++++++++++++++++
> > 2 files changed, 49 insertions(+), 37 deletions(-)
> > delete mode 100644 Documentation/devicetree/bindings/clock/ti/autoidle.txt
> > create mode 100644 Documentation/devicetree/bindings/clock/ti/ti,autoidle.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/clock/ti/autoidle.txt b/Documentation/devicetree/bindings/clock/ti/autoidle.txt
> > deleted file mode 100644
> > index 05645a10a9e3..000000000000
> > --- a/Documentation/devicetree/bindings/clock/ti/autoidle.txt
> > +++ /dev/null
> > @@ -1,37 +0,0 @@
> > -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;
> > - };
> > diff --git a/Documentation/devicetree/bindings/clock/ti/ti,autoidle.yaml b/Documentation/devicetree/bindings/clock/ti/ti,autoidle.yaml
> > new file mode 100644
> > index 000000000000..c995dae65cd6
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/clock/ti/ti,autoidle.yaml
> > @@ -0,0 +1,49 @@
> > +# 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@...nel.org>
> > + - Sukrut Bellary <sbellary@...libre.com>
> > +
> > +description: |
>
> Don't need '|' if no formatting to preserve.
I will fix this.
> > + In TI SoC, some of the clocks support autoidle feature.
> > + 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.
>
> Is this 3 1 sentence paragraphs or 1 paragraph with odd line wrapping?
> Blank line between paragraphs or re-wrap at 80 char. I prefer the latter
> as 1 sentence paragraphs doesn't make much sense.
It's odd line wrapping.
I will fix this.
> > +
> > +properties:
> > + reg:
> > + maxItems: 1
> > +
> > + 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
> > +
> > +examples:
> > + - |
> > + bus {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + clock@1b4 {
> > + reg = <0x01b4>;
> > + ti,autoidle-shift = <8>;
> > + ti,invert-autoidle-bit;
> > + };
> > + };
> > --
> > 2.34.1
> >
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