From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbguseast3.qq.com (smtpbguseast3.qq.com [54.243.244.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 967C62EC54E for ; Wed, 22 Oct 2025 05:42:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.243.244.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761111738; cv=none; b=VAwfC1tjXUXMslXU7jUx06Tfg1w07SFd1m7UKq8O28h2edtqHDxrWD9N6E0kJnsd6qIZd6idGURvOuh8MwxZrOn7Ow0VQuoQfcGA1y/z0to/Stos4o0P3XaUFDJpcx2mfSrY9Ojb8N3yLiDpIaFqF6/hXTbstJrb1BjTxNMF23E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761111738; c=relaxed/simple; bh=Ip7I2oKx+cUmVaYf0SMRJxuVfNJW+zHyD80hJta800c=; h=Date:From:To:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=eq7gNC866CNiwRx/dIAzsAh7XdIw9r072vrApBtj2Ez8rWDqzCT3aemI2VFUkeAZHU6E1LPTuD330cQsZ4cP5NMgNWGHmQzRhRzO79ZTzx1K1OHnkptcyMVIiDAVZx0WD53IBXj1K1L3Tzi2ZaMy/ezpjTLU3gAfl6XZtSd8usw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux.spacemit.com; spf=none smtp.mailfrom=linux.spacemit.com; dkim=pass (1024-bit key) header.d=linux.spacemit.com header.i=@linux.spacemit.com header.b=SegtPXpW; arc=none smtp.client-ip=54.243.244.52 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux.spacemit.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.spacemit.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.spacemit.com header.i=@linux.spacemit.com header.b="SegtPXpW" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.spacemit.com; s=mxsw2412; t=1761111727; bh=2SLeXGDW3QlALU6I3vpBIG1DJuO1fm4ZApuKV65CGdI=; h=Date:From:To:Subject:Message-ID:MIME-Version; b=SegtPXpW51/lDFjLkmbFTKcp8WOg+Kx7zRr4jK74xY2ZuUyMI2ny29fqFCuXaZEY4 WG3VS0RsIJRtwqGwGlAzfJwFS+4hZY/i956gnHfKLolNcgXznjHv944yzDf+HKNoGV KsS7gZ1UhJMiBpNiQYT2JDMB+vjh44WMIXOLusUE= X-QQ-mid: esmtpgz15t1761111725t9381ce62 X-QQ-Originating-IP: 731FWEj5minQ81tpITCfvoBW2wAz+Y/YGXcnH39jcE8= Received: from = ( [14.123.255.147]) by bizesmtp.qq.com (ESMTP) with id ; Wed, 22 Oct 2025 13:42:04 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 5196498867470666752 EX-QQ-RecipientCnt: 12 Date: Wed, 22 Oct 2025 13:42:04 +0800 From: Troy Mitchell To: Yixun Lan , linux-kernel@vger.kernel.org, Lee Jones , Sebastian Reichel , Troy Mitchell , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "open list:RISC-V ARCHITECTURE:Keyword:riscv" , "open list:RISC-V SPACEMIT SoC Support:Keyword:spacemit" , "open list:SYSTEM RESET/SHUTDOWN DRIVERS" Subject: Re: [PATCH v3 1/2] driver: reset: spacemit-p1: add driver for poweroff/reboot Message-ID: <52468F28CD7B50FD+aPhurJD4HTXqIGDT@kernel.org> References: <20251021201451.1013640-1-aurelien@aurel32.net> <20251021201451.1013640-2-aurelien@aurel32.net> <20251022004830-GYB1522542@gentoo.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-QQ-SENDSIZE: 520 Feedback-ID: esmtpgz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: NqN/wpVFVRYXUPmS2RiyfcIo7i7XceT881aAId2QLGZ0ZsUoydn/l2rk NUu0OkkYtWQt3PCCoT5S+2kyp5acUrk/LK3zef1u5leLcUPq5PW2Yz5uFGTTifdJdxIWLFC nEOMTOV+xExd+AaiQkXZfPZmADT+6NdAlKbnis9IR+MG0HM1ye//34tXkEwzQAPlpH5oyiB VU1K/t97QpWXDw+0Qy+ABht0zkzth5rSwUK9lE7PSj65nIagVtpPUwDRyyRmtHlr3OwN2/a zWY/Pe/8AdHNjUTLwRv1KPH59bgX8KMiVgJFSdYS3it9zgjTkyohs/eAgPYIWyJukwgAFPf VaEXSWuQC2HacUPf/V1ZCRyqOkZm5z26BaZ4EHB5UTW2p6QrWRDS7byFPkrBdO34aK2cdF1 2HetV6JRHU8YgqiA9zfvRRBTgJ50LTbbomHCPYBF4QFmF1eS2MFjlLEKrtx8uTuWyYk309V b5zoGxfozZNXmkXPeJizirtcZB8jjGqbv9fn9YhYxzIeSllgsJpcMt6ZX7su67nHYAWakOY 3UeH14ryjw/dS8apX1EO7CTFbyrlp1QoME9gV4pKOMjE0woeMviyO65TmIZdDWE/XxbKzh+ HxuwT3uHGjIvs+7wXePio+BQU60/vIjQ578By5C3Plgb3TWatkHl4kJBm0D1dwD7hOxxKjH pGmq2hYlFQohsETyT14rudyVc27Bq19dc2mL0U5BMYhoEBv3YA/xiXRsBifLPMTBezfuSgW bPW/oBQdmckSw8Mqgk9vo3ccAEuOvFubdtD1oQRtHCFGJ81OyMtVOHqPlgdAh/7ZHE61TX2 0+GeErzsgeu6KyxffnTVY148/2sJUxK0lJDQkYN0isI1ZuZjfa1qmxtYUzX26AVknx3K6Yy m9H6qJqeGQEQKB3FVe7AWvmSCGQxZO+jDuulwbmjeSAA1k2ofT6/JvyKjVtisopc6+ewJ3V WIFvhwADS3MX9rJg0Iwqv7uxWpHY1WlqX4HFFy2UP+StmKTgwewzsI4XPSAu97fTs2kf9Nk EqVDtNYodEohUzA2etIOi6uQ0E67Hf3Qa3DDtXU8neCTz0Rns5lcOZ7K9VXwFojQeI8egGQ zUv/9GAGXw6vBqA09yscmY= X-QQ-XMRINFO: NS+P29fieYNw95Bth2bWPxk= X-QQ-RECHKSPAM: 0 > > > diff --git a/drivers/power/reset/Kconfig b/drivers/power/reset/Kconfig > > > index 8248895ca9038..6577d73edbda4 100644 > > > --- a/drivers/power/reset/Kconfig > > > +++ b/drivers/power/reset/Kconfig > > > @@ -283,6 +283,15 @@ config POWER_RESET_KEYSTONE > > > help > > > Reboot support for the KEYSTONE SoCs. > > > > > > +config POWER_RESET_SPACEMIT_P1 > > > + tristate "SpacemiT P1 poweroff and reset driver" > > > + depends on ARCH_SPACEMIT || COMPILE_TEST > > .. > > > + select MFD_SPACEMIT_P1 > > I'd suggest to use "depends on" instead of "select", the reason is that > > using "select" will sometimes ignore the dependency, considering > > the reset driver here is tightly coupled with P1, so I think it's > > reasonable to switch to use "depends on", also refer below link > > > > https://lxr.linux.no/#linux+v6.7.1/Documentation/kbuild/kconfig-language.rst#L144 > > > > select should be used with care. select will force > > a symbol to a value without visiting the dependencies. > > By abusing select you are able to select a symbol FOO even > > if FOO depends on BAR that is not set. > > In general use select only for non-visible symbols > > (no prompts anywhere) and for symbols with no dependencies. > > That will limit the usefulness but on the other hand avoid > > the illegal configurations all over. > > Thanks for the pointer, I'll fix that in the next version. I used > REGULATOR_SPACEMIT_P1 and RTC_DRV_SPACEMIT_P1 as examples, they'll also > need to be fixed. Yes, I have said here[1]. Do you want to fix that? If you don't have time, I can do it. > > Note also that without the select, a default value has to be added to > MFD_SPACEMIT_P1. Yes, I will add it in my patch. Thanks. - Troy Link: https://lore.kernel.org/all/6DB8C5F20B3FAC2E+aPhfoRXlJtJymlB5@kernel.org/ [1] > otherwise this makes the default values on the > regulator, rtc and reboot drivers useless. > > -- > Aurelien Jarno GPG: 4096R/1DDD8C9B > aurelien@aurel32.net http://aurel32.net >