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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9FA38CA5501 for ; Wed, 13 Sep 2023 07:27:49 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=id5wBw+5; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4RlsVW302Gz3cCC for ; Wed, 13 Sep 2023 17:27:47 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.a=rsa-sha256 header.s=gm1 header.b=id5wBw+5; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=bootlin.com (client-ip=217.70.183.196; helo=relay4-d.mail.gandi.net; envelope-from=herve.codina@bootlin.com; receiver=lists.ozlabs.org) Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [217.70.183.196]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4RlsTW1l8cz30MQ for ; Wed, 13 Sep 2023 17:26:52 +1000 (AEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id 26012E000C; Wed, 13 Sep 2023 07:26:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1694590007; 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=O+j8CLkeQqfE/jh3KUACTiWhEVCfAwwkGv+CICyZc1E=; b=id5wBw+5IoW5nrGIWPBxMOPgujgtR6RcLR+FMdrunmLvgVotlzLE4P7GYyysXkHSpptRua AUfDx7XqGPnc1pFdO+2bGGISGvLbBCzyXlMgzpVW7v7AYC53V4Eaa7Giqyjg+JY6+zA/6X ae1i0V0aWjGLBf6bo0hPvjiAFVEw+x3XTs3VCD8PXidN9bityZlJLHPojdkWvSYwfW1nil jAHS1xzlhg0SXt7dGRnbvV2Qsa4Q1uRXGy564WEw0irLFiw0glEyZRzK5O1GQJ3au0virI 6//y6UwVKL0i+itAqUc3X0+fgIxkEkCePNW0m4OkaNXvPS+DkPuU9xPTWVApzw== Date: Wed, 13 Sep 2023 09:26:40 +0200 From: Herve Codina To: Conor Dooley Subject: Re: [PATCH v5 08/31] dt-bindings: soc: fsl: cpm_qe: cpm1-scc-qmc: Add support for QMC HDLC Message-ID: <20230913092640.76934b31@bootlin.com> In-Reply-To: <20230912-capable-stash-c7a3e33078ac@spud> References: <20230912081527.208499-1-herve.codina@bootlin.com> <20230912101018.225246-1-herve.codina@bootlin.com> <20230912-capable-stash-c7a3e33078ac@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: quoted-printable X-GND-Sasl: herve.codina@bootlin.com X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Lunn , alsa-devel@alsa-project.org, Thomas Petazzoni , Xiubo Li , Linus Walleij , Jaroslav Kysela , Eric Dumazet , Krzysztof Kozlowski , Fabio Estevam , Qiang Zhao , Shengjiu Wang , Lee Jones , Jakub Kicinski , Paolo Abeni , devicetree@vger.kernel.org, Conor Dooley , linux-kernel@vger.kernel.org, Nicolin Chen , linux-gpio@vger.kernel.org, Rob Herring , Christophe JAILLET , Takashi Iwai , linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, Randy Dunlap , Liam Girdwood , Li Yang , Mark Brown , Si mon Horman , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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. > >=20 > > 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. > >=20 > > Signed-off-by: Herve Codina > > --- > > .../bindings/soc/fsl/cpm_qe/fsl,cpm1-scc-qmc.yaml | 13 +++++++++++++ > > 1 file changed, 13 insertions(+) > >=20 > > 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-sc= c-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 rout= ed by the > > TSA to this cell. > > =20 > > + 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 th= e E1/T1 line > > + status such as link up/down. =20 >=20 > 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 t= his property. =46rom the hardware description point of view, this property means that the t= ime slots handled by this channel are connected to the framer. So I think it makes se= nse 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 pr= esence ? If so, is the following correct for this contraint ? --- 8< --- dependencies: - fsl,framer: [ compatible ]; --- 8< --- Regards, Herv=C3=A9 >=20 > Thanks, > Conor. >=20 > > + > > required: > > - reg > > - fsl,tx-ts-mask > > @@ -159,5 +169,8 @@ examples: > > fsl,operational-mode =3D "hdlc"; > > fsl,tx-ts-mask =3D <0x00000000 0x0000ff00>; > > fsl,rx-ts-mask =3D <0x00000000 0x0000ff00>; > > + > > + compatible =3D "fsl,qmc-hdlc"; > > + fsl,framer =3D <&framer>; > > }; > > }; > > --=20 > > 2.41.0 > > =20