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Date: Tue, 20 Feb 2024 18:52:43 +0800
From: Yang Xiwen <forbidden405@...look.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Michael Turquette <mturquette@...libre.com>, Stephen Boyd
<sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: David Yang <mmyangfl@...il.com>, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 3/5] dt-bindings: clock: merge all hisilicon clock
bindings to hisilicon,clock-reset-generator
On 2/20/2024 6:14 PM, Krzysztof Kozlowski wrote:
> On 17/02/2024 13:52, Yang Xiwen via B4 Relay wrote:
>> From: Yang Xiwen <forbidden405@...look.com>
>>
>> We don't need so many separated and duplicated dt-binding files. Merge
>> them all and convert them to YAML.
> What was exactly duplicated? You created unspecific, lose binding...
You can take at the drivers at drivers/clk/hisilicon. All of them use
the same sets of APIs to register a few clocks and resets. That's why i
think they should be merged.
>
> Why this is RFC? RFC means we should not review.
>
>> Signed-off-by: Yang Xiwen <forbidden405@...look.com>
>> ---
>> .../devicetree/bindings/clock/hi3660-clock.txt | 47 -------
>> .../devicetree/bindings/clock/hi3670-clock.txt | 43 -------
>> .../devicetree/bindings/clock/hi6220-clock.txt | 52 --------
>> .../devicetree/bindings/clock/hisi-crg.txt | 50 --------
>> .../clock/hisilicon,clock-reset-generator.yaml | 139 +++++++++++++++++++++
>> .../clock/hisilicon,hi3559av100-clock.yaml | 59 ---------
>> 6 files changed, 139 insertions(+), 251 deletions(-)
>>
>
>> diff --git a/Documentation/devicetree/bindings/clock/hisilicon,clock-reset-generator.yaml b/Documentation/devicetree/bindings/clock/hisilicon,clock-reset-generator.yaml
>> new file mode 100644
>> index 000000000000..d37cd892473e
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/hisilicon,clock-reset-generator.yaml
>> @@ -0,0 +1,139 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/clock/hisilicon,clock-reset-generator.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Hisilicon SOC Clock and Reset Generator (CRG) module
>> +
>> +maintainers:
>> + - Yang Xiwen <forbidden405@...mail.com>
>> +
>> +description: |
>> + Hisilicon SOC clock control module which supports the clocks, resets and
>> + power domains on various SoCs.
>> +
>> +properties:
>> + compatible:
>> + minItems: 1
> No, it does not work like that. Compatibles are fixed, not fluid. It's
> quite a hint that your merging is wrong approach.
>
>
>> + items:
>> + - enum:
>> + - hisilicon,hi3559av100-clock
>> + - hisilicon,hi3559av100-shub-clock
>> + - hisilicon,hi3660-crgctrl
>> + - hisilicon,hi3660-pctrl
>> + - hisilicon,hi3660-pmuctrl
>> + - hisilicon,hi3660-sctrl
>> + - hisilicon,hi3660-iomcu
>> + - hisilicon,hi3660-stub-clk
>> + - hisilicon,hi3670-crgctrl
>> + - hisilicon,hi3670-pctrl
>> + - hisilicon,hi3670-pmuctrl
>> + - hisilicon,hi3670-sctrl
>> + - hisilicon,hi3670-iomcu
>> + - hisilicon,hi3670-media1-crg
>> + - hisilicon,hi3670-media2-crg
>> + - hisilicon,hi6220-acpu-sctrl
>> + - hisilicon,hi6220-aoctrl
>> + - hisilicon,hi6220-sysctrl
>> + - hisilicon,hi6220-mediactrl
>> + - hisilicon,hi6220-pmctrl
>> + - hisilicon,hi6220-stub-clk
>> + - hisilicon,hi3516cv300-crg
>> + - hisilicon,hi3516cv300-sysctrl
>> + - hisilicon,hi3519-crg
>> + - hisilicon,hi3798cv200-crg
>> + - hisilicon,hi3798cv200-sysctrl
>> + - const: syscon
>> + - const: simple-mfd
>> +
>> + reg:
>> + maxItems: 1
>> +
>> + '#clock-cells':
>> + const: 1
>> +
>> + '#reset-cells':
>> + enum: [1, 2]
>> + description: |
> Previous bindings has only 2. Your patch is difficult to review and
> understand.
>
>> + First cell is reset request register offset.
>> + Second cell is bit offset in reset request register.
> All of these are reset controllers? I doubt.
>
>> +
>> + '#address-cells':
>> + const: 1
>> +
>> + '#size-cells':
>> + const: 1
> All of these have children? No, sorry, but this merging does not make
> any sense.
>
>> +
>> + mboxes:
>> + $ref: /schemas/types.yaml#/definitions/phandle-array
>> + description: |
>> + Phandle to the mailbox for sending msg to MCU
>> + (See ../mailbox/hisilicon,hi3660-mailbox.txt for more info)
>> +
>> + mbox-names:
>> + $ref: /schemas/types.yaml#/definitions/string-array
>> + description: |
>> + Names of the mailboxes.
>> +
>> + hisilicon,hi6220-clk-sram:
>> + $ref: /schemas/types.yaml#/definitions/phandle
>> + description: |
>> + Phandle to the syscon managing the SoC internal sram
>> + the driver needs using the sram to pass parameters for frequency change.
>> +
>> + reset-controller:
>> + type: object
>> + description: |
>> + Reset controller for Hi3798CV200 GMAC module
>> +
>> +required:
>> + - compatible
>> + - '#clock-cells'
>> +
>> +allOf:
>> + - if:
>> + properties:
>> + compatible:
>> + not:
>> + contains:
>> + enum:
>> + - hisilicon,hi3798cv200-crg
>> + then:
>> + properties:
>> + reset-controller: false
>> + - oneOf:
>> + - required:
>> + - hisilicon,hi6220-clk-sram
>> + - required:
>> + - reg
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/clock/hi3559av100-clock.h>
>> + soc {
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> +
>> + clock-controller@...10000 {
>> + compatible = "hisilicon,hi3559av100-clock";
>> + #clock-cells = <1>;
>> + #reset-cells = <2>;
>> + reg = <0x0 0x12010000 0x0 0x10000>;
>> + };
>> + };
>> + - |
>> + #include <dt-bindings/interrupt-controller/arm-gic.h>
>> + #include <dt-bindings/clock/hi3660-clock.h>
>> + soc {
>> + #address-cells = <2>;
>> + #size-cells = <2>;
>> +
>> + clock-controller@...35000 {
>> + compatible = "hisilicon,hi3660-crgctrl", "syscon";
>> + reg = <0x0 0xfff35000 0x0 0x1000>;
>> + #clock-cells = <1>;
>> + };
>> + };
>> diff --git a/Documentation/devicetree/bindings/clock/hisilicon,hi3559av100-clock.yaml b/Documentation/devicetree/bindings/clock/hisilicon,hi3559av100-clock.yaml
>> deleted file mode 100644
>> index 3ceb29cec704..000000000000
>> --- a/Documentation/devicetree/bindings/clock/hisilicon,hi3559av100-clock.yaml
>> +++ /dev/null
>> @@ -1,59 +0,0 @@
>> -# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> -%YAML 1.2
>> ----
>> -$id: http://devicetree.org/schemas/clock/hisilicon,hi3559av100-clock.yaml#
>> -$schema: http://devicetree.org/meta-schemas/core.yaml#
> NAK, not related patch.
Okay. I'll revert most of the changes here. Maybe i should only convert
hisi-crg.txt to yaml. That's what i really cares.
>
> Please split all your patches into logical chunks.
>
> Please read submitting-patches *BEFORE SENDING* further submissions.
>
> Best regards,
> Krzysztof
>
--
Regards,
Yang Xiwen
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