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 866DBEDEC70 for ; Wed, 13 Sep 2023 14:53:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241572AbjIMOxD (ORCPT ); Wed, 13 Sep 2023 10:53:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230190AbjIMOxC (ORCPT ); Wed, 13 Sep 2023 10:53:02 -0400 Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [IPv6:2001:4b98:dc4:8::223]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F12C6B3; Wed, 13 Sep 2023 07:52:57 -0700 (PDT) Received: by mail.gandi.net (Postfix) with ESMTPSA id CF61860003; Wed, 13 Sep 2023 14:52:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1694616776; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=aC2RwGdKDnCnTcsXt08pnHkYtsoUowN+XP5X8ItFDzc=; b=EWGGroVBltxzuCTMJt8gh/2G/eIS6B94Qbe3nrqz+sp5y/iQBhr+/O1HKlOYMDY3TE9PC4 L6RELowCewGfATaEd1BYi5ynfm7M+G1PkGyfClkGeqCeZ7brzmiVhltXORoJIwqFnz62AV QMqNup3T4xnUR3CRAG4k1LtxYWyDKI9RySRBsblI79TYUm8eHqFqp+ilb87PZjqsuTVx6R OvMePhchN2VhFn45J4AmUqmTFbk4FPvtWSv6ExxPgkEdHEYYNAgC70wnjn+uPT3yEP5nI+ IjbFoQl30h2z0mrZE0DUi/xfVs+AuF4ogRRsV4TWD7u4En8RdGI0CJTnCncG0w== Date: Wed, 13 Sep 2023 16:52:50 +0200 From: Herve Codina To: Conor Dooley Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Linus Walleij , Qiang Zhao , Li Yang , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Shengjiu Wang , Xiubo Li , Fabio Estevam , Nicolin Chen , Christophe Leroy , Randy Dunlap , netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, Simon Horman , Christophe JAILLET , Thomas Petazzoni Subject: Re: [PATCH v5 08/31] dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add support for QMC HDLC Message-ID: <20230913165250.02bab2ad@bootlin.com> In-Reply-To: <20230913-unruly-recite-7dbbbd7e63e0@spud> References: <20230912081527.208499-1-herve.codina@bootlin.com> <20230912101018.225246-1-herve.codina@bootlin.com> <20230912-capable-stash-c7a3e33078ac@spud> <20230913092640.76934b31@bootlin.com> <20230913-unruly-recite-7dbbbd7e63e0@spud> Organization: Bootlin X-Mailer: Claws Mail 4.1.1 (GTK 3.24.38; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-GND-Sasl: herve.codina@bootlin.com Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org On Wed, 13 Sep 2023 15:42:45 +0100 Conor Dooley wrote: > On Wed, Sep 13, 2023 at 09:26:40AM +0200, Herve Codina wrote: > > Hi Conor, > > > > On Tue, 12 Sep 2023 18:21:58 +0100 > > Conor Dooley wrote: > > > > > On Tue, Sep 12, 2023 at 12:10:18PM +0200, Herve Codina wrote: > > > > The QMC (QUICC mutichannel controller) is a controller present in some > > > > PowerQUICC SoC such as MPC885. > > > > The QMC HDLC uses the QMC controller to transfer HDLC data. > > > > > > > > Additionally, a framer can be connected to the QMC HDLC. > > > > If present, this framer is the interface between the TDM bus used by the > > > > QMC HDLC and the E1/T1 line. > > > > The QMC HDLC can use this framer to get information about the E1/T1 line > > > > and configure the E1/T1 line. > > > > > > > > Signed-off-by: Herve Codina > > > > --- > > > > .../bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 13 +++++++++++++ > > > > 1 file changed, 13 insertions(+) > > > > > > > > diff --git a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml > > > > index 82d9beb48e00..b5073531f3f1 100644 > > > > --- a/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml > > > > +++ b/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml > > > > @@ -101,6 +101,16 @@ patternProperties: > > > > Channel assigned Rx time-slots within the Rx time-slots routed by the > > > > TSA to this cell. > > > > > > > > + compatible: > > > > + const: fsl,qmc-hdlc > > > > + > > > > + fsl,framer: > > > > + $ref: /schemas/types.yaml#/definitions/phandle > > > > + description: > > > > + phandle to the framer node. The framer is in charge of an E1/T1 line > > > > + interface connected to the TDM bus. It can be used to get the E1/T1 line > > > > + status such as link up/down. > > > > > > Sounds like this fsl,framer property should depend on the compatible > > > being present, no? > > > > Well from the implementation point of view, only the QMC HDLC driver uses this > > property. > > > > From the hardware description point of view, this property means that the time slots > > handled by this channel are connected to the framer. So I think it makes sense for > > any channel no matter the compatible (even if compatible is not present). > > > > Should I change and constraint the fsl,framer property to the compatible presence ? > > If so, is the following correct for this contraint ? > > --- 8< --- > > dependencies: > > - fsl,framer: [ compatible ]; > > --- 8< --- > > The regular sort of > if: > compatible: > contains: > const: foo > then: > required: > - fsl,framer > would fit the bill, no? Not sure. "fsl,framer" is an optional property (depending on the hardware we can have a framer or not). Hervé