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 747F1C64ED6 for ; Sat, 18 Feb 2023 15:08:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229633AbjBRPIj (ORCPT ); Sat, 18 Feb 2023 10:08:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229461AbjBRPIh (ORCPT ); Sat, 18 Feb 2023 10:08:37 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4BB9814221; Sat, 18 Feb 2023 07:08:36 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id ED20BB82297; Sat, 18 Feb 2023 15:08:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E5B55C433D2; Sat, 18 Feb 2023 15:08:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1676732913; bh=sPa0pH2g0UXFbG2oKpJGFWnf16edjVekfceTCAy0iO0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=DjCcLFyPtY4eX0lG4GQFGcPX/VgqDZI4nA14qNkjlygE9mU7Fs/8865bB6r+p0mgb 27juK2Yn9jCS5V0oTFwHevhsrkcirvCHLmaeOL7mIOQdI//baC3OfrKA1aJStZLrDM ebGqXsKBwPrlsKFCd5YLynJNKZY5/8yv77Q73X7EMEJYxR6aKvL2XK5iBKXJmO6LSk 7Xt0u68wcWxDxtQIp9mPjJ44pdzMCNwMHaxUcHE90FrPT81nh145cOFrZddWkILOxS 8PmMHsOIDFXnNVC4XGcJCCfpDQwqqQRvqdQftTcDiDeNTd+ilp+ySckjbUgz1o1xhI Y7kOpzhUxztig== Date: Sat, 18 Feb 2023 15:08:28 +0000 From: Conor Dooley To: Krzysztof Kozlowski Cc: Conor Dooley , Hal Feng , linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Palmer Dabbelt , Rob Herring , Krzysztof Kozlowski , Stephen Boyd , Michael Turquette , Philipp Zabel , Emil Renner Berthing , linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 07/11] dt-bindings: clock: Add StarFive JH7110 system clock and reset generator Message-ID: References: <68e61f28-daec-ce72-726a-1fffe8e94829@starfivetech.com> <41e4f293-99eb-f157-b4a9-3d00b15f4652@linaro.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="d3e604Nj3oEHKdcd" Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --d3e604Nj3oEHKdcd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Feb 18, 2023 at 03:55:25PM +0100, Krzysztof Kozlowski wrote: > On 18/02/2023 12:17, Conor Dooley wrote: > > On Sat, Feb 18, 2023 at 11:20:30AM +0100, Krzysztof Kozlowski wrote: > >>>> That's a long thread, please summarize what you ask. Otherwise I hav= e no > >>>> clue what is the question. > >>> > >>> Sorry. I tried to preserve the context of the conversation the last t= ime > >>> I cropped it so that things would be contained on one email. > >>> > >>> For me at least, I am wondering how you convey that out of a list of > >>> clock inputs (for example a, b, c, d) that two of the clocks are inpu= ts > >>> to a mux and it is only required to provide one of the two (say b & c= ). > >=20 > > You skipped this part which was what I was trying to ask you about. >=20 > Yeah, I skipped a lot because there was one big thread with a question: > what do you think? Sorry, I will not dig 8 emails thread to figure out > which question is to me and which is not... This was in the cut-down message & a fake scenario to avoid you needing to understand the full thread. I kept the context originally so that you would not have to dig out the thread & provided the fake scenario this time for this very reason. > > Do you know how to convey this situation, or is it even possible to > > express those rules? >=20 > oneOf: > - clock-names: > minItems: 3 > items: > - a > - b > - c > - d > - clock-names: > items: > - a > - b > - d >=20 > or maybe: > - clock-names: > minItems: 3 > items: > - a > - b > - enum: [c, d] > - d Thanks for the suggestions. Without actually going and playing with it, the first of those two looks like it may be the right fit for this situation, depending on what Hal says the hardware can do. > >>>> Does the mux works correctly if clock input is not connected? I mean, > >>>> are you now talking about real hardware or some simplification from = SW > >>>> point of view? > >>> > >>> I'm coming at this from an angle of "is a StarFive customer going to = show > >>> up with a devicetree containing dummy fixed-clocks to satisfy dtbs_ch= eck > >>> because they opted to only populate one input to the mux". > >>> I don't really care about implications for the driver, just about > >>> whether the hardware allows for inputs to the mux to be left > >>> un-populated. > >> > >> Whether hardware allows - not a question to me. > >=20 > >> BTW, this is rather question coming from me... > >=20 > > I don't understand what you mean by this, sorry. >=20 > You said to a letter addressed to me "whether the hardware allows for > ...". Why would you ask me about hardware I know nothing about? That was > my question - I am asking - whether hardware allows it or not. Then > write bindings depending on that. There was no question here, instead it was an answer to this question of yours: > I mean, > are you now talking about real hardware or some simplification from SW > point of view? In which I was saying I cared about the "real hardware". For obvious reasons, I wouldn't ask you to explain whether the hardware is capable of it or not! Perhaps your original question here was misunderstood. Thanks for the suggestions, Conor. --d3e604Nj3oEHKdcd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCY/Dp2gAKCRB4tDGHoIJi 0k8fAP9J1L6UC9WiKthxZyx3ScL304V9dCIoiKl7RfN3APwx8QEAtNgO+U4h/T3x XP94Chr0S+Ck/9gT1OENwU5YFD/x2QE= =O/TG -----END PGP SIGNATURE----- --d3e604Nj3oEHKdcd--