From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C780DC43334 for ; Sat, 2 Jul 2022 08:24:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230141AbiGBIYa (ORCPT ); Sat, 2 Jul 2022 04:24:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229468AbiGBIY1 (ORCPT ); Sat, 2 Jul 2022 04:24:27 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2103817076; Sat, 2 Jul 2022 01:24:20 -0700 (PDT) X-UUID: b518ebb2c55747a29ab47cbac9f5d735-20220702 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.7,REQID:bd850b7c-41ba-4c95-add6-93540d2b178b,OB:0,LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACTI ON:release,TS:0 X-CID-META: VersionHash:87442a2,CLOUDID:4d5d3863-0b3f-4b2c-b3a6-ed5c044366a0,C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:nil,BEC:nil,COL:0 X-UUID: b518ebb2c55747a29ab47cbac9f5d735-20220702 Received: from mtkmbs10n2.mediatek.inc [(172.21.101.183)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 753641580; Sat, 02 Jul 2022 16:24:15 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Sat, 2 Jul 2022 16:24:13 +0800 Received: from mhfsdcap04 (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Sat, 2 Jul 2022 16:24:12 +0800 Message-ID: <5f85280ea5fd0d4b445307a13a70c3e3fe552ccf.camel@mediatek.com> Subject: Re: [PATCH v2 2/4] dt-bindings: usb: mtk-xhci: Make all clocks required From: Chunfeng Yun To: Rob Herring , "=?ISO-8859-1?Q?N=EDcolas?= F. R. A. Prado" CC: Greg Kroah-Hartman , Matthias Brugger , AngeloGioacchino Del Regno , , "Krzysztof Kozlowski" , , , , , Date: Sat, 2 Jul 2022 16:24:12 +0800 In-Reply-To: <20220701213702.GA1591697-robh@kernel.org> References: <20220623193702.817996-1-nfraprado@collabora.com> <20220623193702.817996-3-nfraprado@collabora.com> <93c6b7201533325cf7758637dd194a372f3c00c6.camel@mediatek.com> <20220629185546.z6rn7xp3ejpmaupi@notapiano> <20220701213702.GA1591697-robh@kernel.org> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-MTK: N Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, 2022-07-01 at 15:37 -0600, Rob Herring wrote: > On Wed, Jun 29, 2022 at 02:55:46PM -0400, Nícolas F. R. A. Prado > wrote: > > On Tue, Jun 28, 2022 at 08:57:45AM +0800, Chunfeng Yun wrote: > > > Hi Nícolas, > > > > > > On Thu, 2022-06-23 at 15:37 -0400, Nícolas F. R. A. Prado wrote: > > > > All of the clocks listed in the binding are always wired to the > > > > XHCI > > > > controller hardware blocks on all SoCs. The reason some clocks > > > > were > > > > made > > > > optional in the binding was to account for the fact that > > > > depending on > > > > the SoC, some of the clocks might be fixed (ie not controlled > > > > by > > > > software). > > > > > > > > Given that the devicetree should represent the hardware, make > > > > all > > > > clocks > > > > required in the binding. Subsequent patches will make the DTS > > > > changes > > > > to > > > > specify fixed-clocks for the clocks that aren't controllable. > > > > > > > > Signed-off-by: Nícolas F. R. A. Prado > > > > > > > > --- > > > > > > > > Changes in v2: > > > > - Undid clock list changes that allowed middle clocks to be > > > > missing > > > > from > > > > v1 and made all clocks required instead > > > > - Rewrote commit message and title > > > > > > > > Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml | > > > > 4 + > > > > --- > > > > 1 file changed, 1 insertion(+), 3 deletions(-) > > > > > > > > diff --git > > > > a/Documentation/devicetree/bindings/usb/mediatek,mtk- > > > > xhci.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtk- > > > > xhci.yaml > > > > index 63cbc2b62d18..1444d18ef9bc 100644 > > > > --- a/Documentation/devicetree/bindings/usb/mediatek,mtk- > > > > xhci.yaml > > > > +++ b/Documentation/devicetree/bindings/usb/mediatek,mtk- > > > > xhci.yaml > > > > @@ -67,7 +67,6 @@ properties: > > > > maxItems: 1 > > > > > > > > clocks: > > > > - minItems: 1 > > > > items: > > > > - description: Controller clock used by normal mode > > > > - description: Reference clock used by low power mode > > > > etc > > > > @@ -76,9 +75,8 @@ properties: > > > > - description: controller clock > > > > > > > > clock-names: > > > > - minItems: 1 > > > > items: > > > > - - const: sys_ck # required, the following ones are > > > > optional > > > > + - const: sys_ck > > > > - const: ref_ck > > > > - const: mcu_ck > > > > - const: dma_ck > > > > > > This patch causes more check warning, I prefer to leave dt- > > > bindings > > > unchanged, but just fix mt8195's dts warning instead, thanks a > > > lot > > > > Hi Chunfeng, > > > > the warnings reported by Rob's bot only happen if patches 3 and 4 > > aren't applied > > to adapt the devicetrees. They are ABI breaking changes, but I > > understood this > > as the desired solution from the discussion we had with Krzysztof > > on v1 [1]. > > The warnings have nothing to do with patches 3 and 4 as those are > for > dts files. It's examples in bindings that are the problem. Yes, I mean almost all existing dts supporting mtk-xhci will also cause similar warnings, as changes in patches 3, 4; It seems less flexible to make all clock required, not only changes all existing ones but also need more changes if additional clock is added. > > Rob