[{"id":3676523,"web_url":"http://patchwork.ozlabs.org/comment/3676523/","msgid":"","list_archive_url":null,"date":"2026-04-13T07:52:17","subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","submitter":{"id":4675,"url":"http://patchwork.ozlabs.org/api/people/4675/","name":"Andy Shevchenko","email":"andy.shevchenko@gmail.com"},"content":"On Sat, Apr 11, 2026 at 12:58 PM Binbin Zhou wrote:\n\n> This patch set describes the I2C controller integrated the\n> Loongson-2K0300 chip.\n>\n> It has a significantly different design from the previous I2C\n> controller(i2c-ls2x), such as support for master-slave transfer mode,\n> and DMA transfers (implementation in progress), etc. Therefore, we try\n> to name it i2c-ls2x-v2.\n\n...\n\n> - parent_rate_MHz -> parent_rate_mhz to avoid CamelCase.\n\nWas it a special requirement from maintainers?\n\nNote, the physical units are special. The m and M have quite a\ndifferent multiplier value. So, even if asked by somebody I think it's\nstill arguably should be kept as MHz.","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=EB/+J5fu;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-i2c+bounces-17042-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"EB/+J5fu\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=209.85.218.49","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvKQQ51Knz1yDF\n\tfor ; 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Mon, 13 Apr 2026\n 00:52:53 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-i2c@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"","In-Reply-To":"","From":"Andy Shevchenko ","Date":"Mon, 13 Apr 2026 10:52:17 +0300","X-Gm-Features":"AQROBzDd7oISg4nKnjr8XlrN-YmlCPDBGxSBhjMNA29ixq3SfKpY3ltSGMuX2Jc","Message-ID":"\n ","Subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","To":"Binbin Zhou ","Cc":"Binbin Zhou ,\n Huacai Chen ,\n\tRob Herring , Krzysztof Kozlowski ,\n Conor Dooley ,\n\tAndi Shyti ,\n Wolfram Sang ,\n\tAndy Shevchenko , linux-i2c@vger.kernel.org,\n\tHuacai Chen , Xuerui Wang ,\n loongarch@lists.linux.dev,\n\tdevicetree@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3676535,"web_url":"http://patchwork.ozlabs.org/comment/3676535/","msgid":"","list_archive_url":null,"date":"2026-04-13T08:08:14","subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","submitter":{"id":85415,"url":"http://patchwork.ozlabs.org/api/people/85415/","name":"Binbin Zhou","email":"zhoubb.aaron@gmail.com"},"content":"Hi Andy:\n\nOn Mon, Apr 13, 2026 at 3:52 PM Andy Shevchenko\n wrote:\n>\n> On Sat, Apr 11, 2026 at 12:58 PM Binbin Zhou wrote:\n>\n> > This patch set describes the I2C controller integrated the\n> > Loongson-2K0300 chip.\n> >\n> > It has a significantly different design from the previous I2C\n> > controller(i2c-ls2x), such as support for master-slave transfer mode,\n> > and DMA transfers (implementation in progress), etc. Therefore, we try\n> > to name it i2c-ls2x-v2.\n>\n> ...\n>\n> > - parent_rate_MHz -> parent_rate_mhz to avoid CamelCase.\n>\n> Was it a special requirement from maintainers?\n\nI’m actually a bit confused, because when I submitted the v6 patchset,\ncheckpatch didn’t issue this warning.\nBut now, it produces the following output:\n\nscripts/checkpatch.pl --strict i2c-ls2k0300-v6/v6-0002*\nCHECK: Avoid CamelCase: \n#512: FILE: drivers/i2c/busses/i2c-ls2x-v2.c:437:\n+ priv->parent_rate_MHz = clk_get_rate(priv->clk);\n\ntotal: 0 errors, 0 warnings, 1 checks, 574 lines checked\n\nNOTE: For some of the reported defects, checkpatch may be able to\n mechanically convert to the typical style using --fix or --fix-inplace\n\n>\n> Note, the physical units are special. The m and M have quite a\n> different multiplier value. So, even if asked by somebody I think it's\n> still arguably should be kept as MHz.\n>\n> --\n> With Best Regards,\n> Andy Shevchenko","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=X0Njt2Xl;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; helo=tor.lore.kernel.org;\n envelope-from=linux-i2c+bounces-17043-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"X0Njt2Xl\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=209.85.208.54","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from tor.lore.kernel.org (tor.lore.kernel.org\n [IPv6:2600:3c04:e001:36c::12fc:5321])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvKp35x9Cz1yDG\n\tfor ; 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The m and M have quite a\n> > different multiplier value. So, even if asked by somebody I think it's\n> > still arguably should be kept as MHz.\n\nSee above why.","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=SrqBdkSz;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-i2c+bounces-17044-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"SrqBdkSz\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=209.85.218.48","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvL4s2nfpz1yDF\n\tfor ; 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Mon, 13 Apr 2026\n 01:17:59 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-i2c@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"\n \n ","In-Reply-To":"\n ","From":"Andy Shevchenko ","Date":"Mon, 13 Apr 2026 11:17:22 +0300","X-Gm-Features":"AQROBzBJwSsZg2tUBgFtmmJxajkFQLHqP5eXC7UwkUnFX9NthWB1sHncPf4yD5E","Message-ID":"\n ","Subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","To":"Binbin Zhou ","Cc":"Binbin Zhou ,\n Huacai Chen ,\n\tRob Herring , Krzysztof Kozlowski ,\n Conor Dooley ,\n\tAndi Shyti ,\n Wolfram Sang ,\n\tAndy Shevchenko , linux-i2c@vger.kernel.org,\n\tHuacai Chen , Xuerui Wang ,\n loongarch@lists.linux.dev,\n\tdevicetree@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}},{"id":3676594,"web_url":"http://patchwork.ozlabs.org/comment/3676594/","msgid":"","list_archive_url":null,"date":"2026-04-13T09:26:09","subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","submitter":{"id":85415,"url":"http://patchwork.ozlabs.org/api/people/85415/","name":"Binbin Zhou","email":"zhoubb.aaron@gmail.com"},"content":"On Mon, Apr 13, 2026 at 4:18 PM Andy Shevchenko\n wrote:\n>\n> On Mon, Apr 13, 2026 at 11:08 AM Binbin Zhou wrote:\n> > On Mon, Apr 13, 2026 at 3:52 PM Andy Shevchenko\n> > wrote:\n> > > On Sat, Apr 11, 2026 at 12:58 PM Binbin Zhou wrote:\n>\n> ...\n>\n> > > > - parent_rate_MHz -> parent_rate_mhz to avoid CamelCase.\n> > >\n> > > Was it a special requirement from maintainers?\n> >\n> > I’m actually a bit confused, because when I submitted the v6 patchset,\n> > checkpatch didn’t issue this warning.\n> > But now, it produces the following output:\n> >\n> > scripts/checkpatch.pl --strict i2c-ls2k0300-v6/v6-0002*\n> > CHECK: Avoid CamelCase: \n>\n> It's a false positive of the checkpatch.\n\nOK, I will revert this change.\n>\n> > #512: FILE: drivers/i2c/busses/i2c-ls2x-v2.c:437:\n> > + priv->parent_rate_MHz = clk_get_rate(priv->clk);\n> >\n> > total: 0 errors, 0 warnings, 1 checks, 574 lines checked\n> >\n> > NOTE: For some of the reported defects, checkpatch may be able to\n> > mechanically convert to the typical style using --fix or --fix-inplace\n> >\n> > > Note, the physical units are special. The m and M have quite a\n> > > different multiplier value. So, even if asked by somebody I think it's\n> > > still arguably should be kept as MHz.\n>\n> See above why.\n\nI see, thanks.\n>\n> --\n> With Best Regards,\n> Andy Shevchenko","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-i2c@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=DpKGXT4e;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; helo=sea.lore.kernel.org;\n envelope-from=linux-i2c+bounces-17045-incoming=patchwork.ozlabs.org@vger.kernel.org;\n receiver=patchwork.ozlabs.org)","smtp.subspace.kernel.org;\n\tdkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com\n header.b=\"DpKGXT4e\"","smtp.subspace.kernel.org;\n arc=pass smtp.client-ip=209.85.208.50","smtp.subspace.kernel.org;\n dmarc=pass (p=none dis=none) header.from=gmail.com","smtp.subspace.kernel.org;\n spf=pass smtp.mailfrom=gmail.com"],"Received":["from sea.lore.kernel.org (sea.lore.kernel.org [172.234.253.10])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fvMZd2kMHz1xtJ\n\tfor ; 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Mon, 13 Apr 2026\n 02:26:22 -0700 (PDT)","Precedence":"bulk","X-Mailing-List":"linux-i2c@vger.kernel.org","List-Id":"","List-Subscribe":"","List-Unsubscribe":"","MIME-Version":"1.0","References":"\n \n \n ","In-Reply-To":"\n ","From":"Binbin Zhou ","Date":"Mon, 13 Apr 2026 17:26:09 +0800","X-Gm-Features":"AQROBzBh6eBs7REn1Qv9IV594bWuIgt_mTQzWy_FshpZ6l48Ew5CqcVKTNMWbYw","Message-ID":"\n ","Subject":"Re: [PATCH v7 0/2] i2c: Add Loongson-2K0300 I2C controller support","To":"Andy Shevchenko ","Cc":"Binbin Zhou ,\n Huacai Chen ,\n\tRob Herring , Krzysztof Kozlowski ,\n Conor Dooley ,\n\tAndi Shyti ,\n Wolfram Sang ,\n\tAndy Shevchenko , linux-i2c@vger.kernel.org,\n\tHuacai Chen , Xuerui Wang ,\n loongarch@lists.linux.dev,\n\tdevicetree@vger.kernel.org","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable"}}]