linux-kernel - Re: [PATCH v5 4/5] clk: stm32: introduce clocks for STM32MP257 platform

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Message-ID: <fe5cf8bf-fa80-400c-b2e0-969b5ed68c8b@foss.st.com>
Date:   Wed, 6 Dec 2023 15:50:05 +0100
From:   Gabriel FERNANDEZ <gabriel.fernandez@...s.st.com>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        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>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>
CC:     <linux-clk@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 4/5] clk: stm32: introduce clocks for STM32MP257
 platform

Hi Philipp, thank's for reviewing.

On 12/6/23 15:20, Philipp Zabel wrote:
> Hi Gabriel,
>
> On Mi, 2023-12-06 at 15:00 +0100, gabriel.fernandez@...s.st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@...s.st.com>
>>
>> This driver is intended for the STM32MP25 clock family and utilizes
>> the stm32-core API, similar to the stm32mp13 clock driver.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@...s.st.com>
>> ---
> [...]
>> diff --git a/drivers/clk/stm32/stm32mp25_rcc.h b/drivers/clk/stm32/stm32mp25_rcc.h
>> new file mode 100644
>> index 000000000000..b1aca78a0b22
>> --- /dev/null
>> +++ b/drivers/clk/stm32/stm32mp25_rcc.h
>> @@ -0,0 +1,4977 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * Copyright (C) STMicroelectronics 2023 - All Rights Reserved
>> + * Author: Gabriel Fernandez <gabriel.fernandez@...s.st.com> for STMicroelectronics.
>> + */
>> +
>> +#ifndef STM32MP25_RCC_H
>> +#define STM32MP25_RCC_H
>> +
>> +#define RCC_SECCFGR0				0x0
> [...]
>
> What is the purpose of all the unused #defines?
>
> I initially wanted to point out that the _SHIFT #defines are redundant
> because the same information is already contained in the corresponding
> _MASK #defines, but it seems like neither of the register field
> definitions are used anywhere. It appears only some of the *CFGR
> register offset #defines are actually used.

It's a generated file that is also used for other components,

but it's not a big deal to remove the unused defines in the Kernel.

I'm waiting for other remarks before sending a V6

Best regards

Gabriel

> regards
> Philipp