linux-kernel - RE: [PATCH v4 1/4] dt-bindings: clock: add ExynosAuto v920 SoC CMU bindings

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Message-ID: <035501dade31$55cc7f40$01657dc0$@samsung.com>
Date: Thu, 25 Jul 2024 10:24:03 +0900
From: "sunyeal.hong" <sunyeal.hong@...sung.com>
To: "'Rob Herring'" <robh@...nel.org>
Cc: "'Krzysztof Kozlowski'" <krzk@...nel.org>, "'Sylwester Nawrocki'"
	<s.nawrocki@...sung.com>, "'Chanwoo Choi'" <cw00.choi@...sung.com>, "'Alim
 Akhtar'" <alim.akhtar@...sung.com>, "'Michael Turquette'"
	<mturquette@...libre.com>, "'Stephen Boyd'" <sboyd@...nel.org>, "'Conor
 Dooley'" <conor+dt@...nel.org>, <linux-samsung-soc@...r.kernel.org>,
	<linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v4 1/4] dt-bindings: clock: add ExynosAuto v920 SoC CMU
 bindings

Hello Rob,

> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: Wednesday, July 24, 2024 5:57 AM
> To: Sunyeal Hong <sunyeal.hong@...sung.com>
> Cc: Krzysztof Kozlowski <krzk@...nel.org>; Sylwester Nawrocki
> <s.nawrocki@...sung.com>; Chanwoo Choi <cw00.choi@...sung.com>; Alim
> Akhtar <alim.akhtar@...sung.com>; Michael Turquette
> <mturquette@...libre.com>; Stephen Boyd <sboyd@...nel.org>; Conor Dooley
> <conor+dt@...nel.org>; linux-samsung-soc@...r.kernel.org; linux-
> clk@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org
> Subject: Re: [PATCH v4 1/4] dt-bindings: clock: add ExynosAuto v920 SoC
> CMU bindings
> 
> On Tue, Jul 23, 2024 at 07:33:30AM +0900, Sunyeal Hong wrote:
> > Add dt-schema for ExynosAuto v920 SoC clock controller.
> > Add device tree clock binding definitions for below CMU blocks.
> >
> > - CMU_TOP
> > - CMU_PERIC0
> >
> > Signed-off-by: Sunyeal Hong <sunyeal.hong@...sung.com>
> > ---
> >  .../clock/samsung,exynosautov920-clock.yaml   | 115 +++++++++++
> >  .../clock/samsung,exynosautov920.h            | 191 ++++++++++++++++++
> >  2 files changed, 306 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.y
> > aml  create mode 100644
> > include/dt-bindings/clock/samsung,exynosautov920.h
> >
> > diff --git
> > a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock
> > .yaml
> > b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock
> > .yaml
> > new file mode 100644
> > index 000000000000..90f9f17da959
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-c
> > +++ lock.yaml
> > @@ -0,0 +1,115 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> > +https://protect2.fireeye.com/v1/url?k=9932a88e-c6ae81a4-993323c1-000b
> > +abe598f7-779f1e959ac8eab9&q=1&e=539edfa4-b4e4-460a-93f4-1e6f17030945&
> > +u=http%3A%2F%2Fdevicetree.org%2Fschemas%2Fclock%2Fsamsung%2Cexynosaut
> > +ov920-clock.yaml%23
> > +$schema:
> > +https://protect2.fireeye.com/v1/url?k=4dbf6fb9-12234693-4dbee4f6-000b
> > +abe598f7-363a2f64c69b9542&q=1&e=539edfa4-b4e4-460a-93f4-1e6f17030945&
> > +u=http%3A%2F%2Fdevicetree.org%2Fmeta-schemas%2Fcore.yaml%23
> > +
> > +title: Samsung ExynosAuto v920 SoC clock controller
> > +
> > +maintainers:
> > +  - Sunyeal Hong <sunyeal.hong@...sung.com>
> > +  - Chanwoo Choi <cw00.choi@...sung.com>
> > +  - Krzysztof Kozlowski <krzk@...nel.org>
> > +  - Sylwester Nawrocki <s.nawrocki@...sung.com>
> > +
> > +description: |
> > +  ExynosAuto v920 clock controller is comprised of several CMU units,
> > +generating
> > +  clocks for different domains. Those CMU units are modeled as
> > +separate device
> > +  tree nodes, and might depend on each other. Root clocks in that
> > +clock tree are
> > +  two external clocks:: OSCCLK/XTCXO (38.4 MHz) and RTCCLK/XrtcXTI
> (32768 Hz).
> > +  The external OSCCLK must be defined as fixed-rate clock in dts.
> > +
> > +  CMU_TOP is a top-level CMU, where all base clocks are prepared
> > + using PLLs and  dividers; all other clocks of function blocks (other
> > + CMUs) are usually  derived from CMU_TOP.
> > +
> > +  Each clock is assigned an identifier and client nodes can use this
> > + identifier  to specify the clock which they consume. All clocks
> > + available for usage  in clock consumer nodes are defined as
> > + preprocessor macros in  'include/dt-
> bindings/clock/samsung,exynosautov920.h' header.
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - samsung,exynosautov920-cmu-top
> > +      - samsung,exynosautov920-cmu-peric0
> > +
> > +  clocks:
> > +    minItems: 1
> > +    maxItems: 3
> > +
> > +  clock-names:
> > +    minItems: 1
> > +    maxItems: 3
> 
> Move the descriptions and names here. Then in the if/then schemas just set
> the number of items to 1 or 3 as appropriate.
> 
> Rob

Thank you for your review. I will update by reflecting the fixes.

Thanks,
Sunyeal Hong