netdev - Re: [PATCH net-next v9 5/6] net: stmmac: configure SerDes according to the interface mode

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Message-ID: <601c88fb-8ec8-4866-a45d-f28dea6d9625@linux.intel.com>
Date: Thu, 6 Mar 2025 16:39:38 +0800
From: Choong Yong Liang <yong.liang.choong@...ux.intel.com>
To: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Simon Horman <horms@...nel.org>, Jose Abreu <joabreu@...opsys.com>,
 Jose Abreu <Jose.Abreu@...opsys.com>,
 David E Box <david.e.box@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 "H . Peter Anvin" <hpa@...or.com>,
 Rajneesh Bhardwaj <irenic.rajneesh@...il.com>,
 David E Box <david.e.box@...el.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S . Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Maxime Coquelin
 <mcoquelin.stm32@...il.com>, Alexandre Torgue
 <alexandre.torgue@...s.st.com>, Jiawen Wu <jiawenwu@...stnetic.com>,
 Mengyuan Lou <mengyuanlou@...-swift.com>,
 Heiner Kallweit <hkallweit1@...il.com>, Russell King
 <linux@...linux.org.uk>, Hans de Goede <hdegoede@...hat.com>,
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
 Richard Cochran <richardcochran@...il.com>,
 Serge Semin <fancer.lancer@...il.com>, x86@...nel.org,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 platform-driver-x86@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH net-next v9 5/6] net: stmmac: configure SerDes according
 to the interface mode

On 6/3/2025 3:15 pm, Andy Shevchenko wrote:
> Thu, Feb 27, 2025 at 08:15:21PM +0800, Choong Yong Liang kirjoitti:
>> Intel platform will configure the SerDes through PMC API based on the
>> provided interface mode.
>> This patch adds several new functions below:-
>> - intel_tsn_lane_is_available(): This new function reads FIA lane
>>    ownership registers and common lane registers through IPC commands
>>    to know which lane the mGbE port is assigned to.
>> - intel_mac_finish(): To configure the SerDes based on the assigned
>>    lane and latest interface mode, it sends IPC command to the PMC through
>>    PMC driver/API. The PMC acts as a proxy for R/W on behalf of the driver.
>> - intel_set_reg_access(): Set the register access to the available TSN
>>    interface.
> ...
> 
>> config DWMAC_INTEL
>>   	default X86
>>   	depends on X86 && STMMAC_ETH && PCI
>>   	depends on COMMON_CLK
>> +	depends on ACPI
> Stray and unexplained change. Please, fix it. We don't need the dependencies
> which are not realised in the compile time.
> 
> -- With Best Regards, Andy Shevchenko

Hi Andy,

The dependency on ACPI is necessary because the intel_pmc_ipc.h header 
relies on ACPI functionality to interact with the Intel PMC.