Received: by 2002:ac0:98c7:0:0:0:0:0 with SMTP id g7-v6csp395267imd; Sat, 3 Nov 2018 02:38:07 -0700 (PDT) X-Google-Smtp-Source: AJdET5c22iTrGrU+S0g1wuOrIbMdEnJcn+O7JpnBNHUiA3C2tbdx5ay1ly+8EBRjyTIQS77rq9Xb X-Received: by 2002:a62:1f13:: with SMTP id f19-v6mr14940368pff.168.1541237887608; Sat, 03 Nov 2018 02:38:07 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1541237887; cv=none; d=google.com; s=arc-20160816; b=uf4jtkwjxGhbBLqhtJSn9E5rt777oeOzhHbHlaPsyADptCM1J5HQbM/UI+yLs5fxxl H+O4URRe+y5PEMJXHpB05h/Ryz6AVRKjDrebaP66d8NZp+43wyYc7XTYVpSnl07O7nxW Jk8vTHdefZTdqqFnkZYmflJORzxHf9Bvxcgj4xriFqNaMFzqZ04SBjz66OJfuws0sd0L 3wO5EWmhi8htlGIPJQb2X3RzymNH5m6D/ugAQgV+UwJKNrks8Cl+rfA8eGHcLfyRUPpk VArdkO2kfJVckZt8u3ifRFi/YqtwlB6COR3G7nabNXwxjjv8zi9X405vqZ4JvZLYjVnv dsTw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:autocrypt:openpgp:from:references:cc:to:subject; bh=d3ATaiEuPQ0rUe5MRhw6fpeEqbsQDG9YeU8BzezsxaY=; b=xNrqyKm129+pvJXtIO3HRnJzZZcN+s2hleL8OUksjTpMYVlE7oxiIA4SqppyppcDF9 kT8UfOXZ4ZW8FpTvQP1Ubjr3/RLBZd7lgO8UwEHe3z/Q5yPv2awXXXsVmrNkaAfUmNkn Man3EFZYj9V0o6hhKfqOo87IgXyY1cB7E6XE5USlBIK8Rt03poYkUk95wWvYspFINtdE sJ5LltdsS2+rJdNKts+us6Vtrixz3X6YfZccNGd9cTQ9Xr8G+NJxmZi0oaTGvgMaGHlT GqCUyIC1hdvlZBf8NkPunitPX0MAfGaMiQ7M14IixFsfRx3mRdNcfbC0AYy46J3Gg5u0 hyWg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p3-v6si14320538pff.272.2018.11.03.02.37.53; Sat, 03 Nov 2018 02:38:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727750AbeKCSrV (ORCPT + 99 others); Sat, 3 Nov 2018 14:47:21 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:38031 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726539AbeKCSrV (ORCPT ); Sat, 3 Nov 2018 14:47:21 -0400 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=bjornoya.blackshift.org) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gIsM1-0008TO-Ee; Sat, 03 Nov 2018 10:36:29 +0100 Received: from [IPv6:2003:c7:743:e84c:c591:f55c:bb67:31f5] (unknown [IPv6:2003:c7:743:e84c:c591:f55c:bb67:31f5]) (using TLSv1.2 with cipher ECDHE-RSA-CHACHA20-POLY1305 (256/256 bits)) (Client CN "mkl@blackshift.org", Issuer "StartCom Class 1 Client CA" (not verified)) (Authenticated sender: mkl@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id D0124384401; Sat, 3 Nov 2018 09:36:26 +0000 (UTC) Subject: Re: [PATCH 1/6] phy: Add max_bitrate attribute & phy_get_max_bitrate() To: Faiz Abbas , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, netdev@vger.kernel.org, linux-can@vger.kernel.org Cc: wg@grandegger.com, robh+dt@kernel.org, mark.rutland@arm.com, kishon@ti.com References: <20181102192616.28291-1-faiz_abbas@ti.com> <20181102192616.28291-2-faiz_abbas@ti.com> From: Marc Kleine-Budde Openpgp: preference=signencrypt Autocrypt: addr=mkl@pengutronix.de; prefer-encrypt=mutual; keydata= mQINBFFVq30BEACtnSvtXHoeHJxG6nRULcvlkW6RuNwHKmrqoksispp43X8+nwqIFYgb8UaX zu8T6kZP2wEIpM9RjEL3jdBjZNCsjSS6x1qzpc2+2ivjdiJsqeaagIgvy2JWy7vUa4/PyGfx QyUeXOxdj59DvLwAx8I6hOgeHx2X/ntKAMUxwawYfPZpP3gwTNKc27dJWSomOLgp+gbmOmgc 6U5KwhAxPTEb3CsT5RicsC+uQQFumdl5I6XS+pbeXZndXwnj5t84M+HEj7RN6bUfV2WZO/AB Xt5+qFkC/AVUcj/dcHvZwQJlGeZxoi4veCoOT2MYqfR0ax1MmN+LVRvKm29oSyD4Ts/97cbs XsZDRxnEG3z/7Winiv0ZanclA7v7CQwrzsbpCv+oj+zokGuKasofzKdpywkjAfSE1zTyF+8K nxBAmzwEqeQ3iKqBc3AcCseqSPX53mPqmwvNVS2GqBpnOfY7Mxr1AEmxdEcRYbhG6Xdn+ACq Dq0Db3A++3PhMSaOu125uIAIwMXRJIzCXYSqXo8NIeo9tobk0C/9w3fUfMTrBDtSviLHqlp8 eQEP8+TDSmRP/CwmFHv36jd+XGmBHzW5I7qw0OORRwNFYBeEuiOIgxAfjjbLGHh9SRwEqXAL kw+WVTwh0MN1k7I9/CDVlGvc3yIKS0sA+wudYiselXzgLuP5cQARAQABtCZNYXJjIEtsZWlu ZS1CdWRkZSA8bWtsQHBlbmd1dHJvbml4LmRlPokCVAQTAQoAPgIbAwIeAQIXgAULCQgHAwUV CgkICwUWAgMBABYhBMFAC6CzmJ5vvH1bXCte4hHFiupUBQJabjnbBQkK/nszAAoJECte4hHF iupU7UUQAIMmYURs8mpBKFKOFhWZczuCRt7vueMkyj9voaipD/vrbeYBVFr4dvFeoodQCKSi 4/cHN3LIC8j1n0JGyQ8LsV2cHbZUd3Wcdw4KMsDMSVk9unAjahfX1MyB7qPgUDlW1jYrapFm eTNE1hp1+TAKL8W/E4rahhf3fdJxlS3h1CSnbfEavBQXBUi8jKX3G6mub2BSJUe3smAEb8JC 3Td3+jzgCDK+dPwMeusxjU/JT5j/gCUbmGAGojex/P1dSfrMjLX2MhQpd6b/K28mymb1Zr34 TGetLHn6eE5yvW5XXYX9p1zpwhdhQ+bsnOo6HhlPzWsEkd/fK9InyfBN+yflJBnROv6Uk34O nsh3TaX5hdIcCfOqpvSETY23quJKsL9Sng0xJ6jdCW6diIr6Kl154ijdOkPtYNKYTdDX3CYy Jc0WjG0lh6q5zOUGdm0SuRLi9fGTyhUUmR862XVX0XqZjxllWwk+UI5I6bge2AUpKP+7zxr5 0OLBHHGkCq/NYJS/6lt34qrbHcoRgUDOk/ZSIRNQQdsHEsuKTyrJxmpXFJMxx3LKdZ1z4xqP 9Gm9Ifrbdx8bD8KhwN6CFnUBylI9BawAH3egnD5HpOU3dLcFT2mPY/E15WSA/8Pn0QllCZ0/ CYTcepOVHv1SWTSemA4I5sFMMhkmAFWdIdSRX1oZXJKcuQENBFpuQT4BCAC1d43/wNxcuZEr FCxRQCTxyFHkAdOETPThyBuGIbTCOk94R6whDwEPUnpKqdaTuNChTbFxZEthXBJiAhD9nDoU o5gBxZJWoqnLyzfQANIfjYFEw+j/T9Sx3Z96p3/KDaDDAXryt97taTX8czWBqYdQfG6UwjTK cMw5yQ2WzgO0hKkFDLyRXZAoP7jIiVm8JVNNdnQXH0MzQIRAcAS0JNYSC/Vppx3w84GvxAD6 cx95aByHNnR5gbyciq4pHuUsqw1YC0Wakd2f2L6HnaYYvtFypHLNO8a1YVfsY+1h6D2ul7P6 AGUbUQghaf5khgYpBfTi4YbQgKyxOZoYYfh8ssPVABEBAAGJAjwEGAEKACYWIQTBQAugs5ie b7x9W1wrXuIRxYrqVAUCWm5BPgIbDAUJAeXlcgAKCRArXuIRxYrqVL9ZD/oD+32+N0ijZQ8p /RaRjPtSnAs6irNRGE1ZKcKpiM76eRFJrN7HvfFiDFmUpSh+8bDyM5kc/Z1AXhXlf0VBT24N ZLBXXaFl/M4HKkJTc+PA3yYgb06ChfMWst5h8rfa7htqAhLUby2MTyfJ0xcAptCWTnW0OCGj EL4ZKr8Ml/fjKYP7hp37iBXwwQF3lSSdjMsEjMT/9/9Ip2+uJ559F8pCmFV5wNgHRH+jnxII iUILoQMDn42cygozxfh14GwCqUSPW+EqBb7YOWreWA3D3kbXtIwV7/ZXT7L0n/0OTx9pK9K/ C2jleQxaep8bHmHqTEEqkrC0rNhocTcrnOYviEO0TkHvSqtNMaM3KnOL3Nsb6rgqDpj2BVWk rIqMPi0aXfBu/ArZsAios/0QHB56Id3BshIbs1A2VNmFgrxkhKjwJ8A7geD5PXn0cur08byy 64Kk7ii0iwbJZasPfVLPLmMEVjiSOgZv4hbKyecWVwtlMh3k4rkMuSVDDr+2E9KQXS2REfe7 jTF9WUzFhm0HYiYSiiQyHuZPLc6t/L9OqvrNVTdYaEkBsm/LVv6h6rqpklJLQhU/2KtLbImH 8IQK6+7up2rtwyqeehbNdsiqyDA6Sso5eKCoxKKbAFM7PtEYMC2Kv6wAca5SqEOUtRHU/6jK eO1yNpD5UgI9bzazBn1mwrkBDQRabkElAQgA2DC6TvbKcisVld/bvetQmVseRAjC38ccfMim N4Be5XG18y6STUlbpCVAjKx8944bJiEQb0AId1drMfsD/yGtIB3gxuGnzgm/bAaMd8U/XP/l j7AwbgdcZYt1o/BYb9RUd1nj8nFhpn2HjxGz8NgK92OQvlKQYCZF4x0fCPYfs6N8qpR9rISj 9sfJa/HnpOu6WCke0xW99+j3GmNPizKMELbsRJweg61emL8GnU4l5lq3nKEYgcjHiWiVeu0/ 7LmK2g13ih7f7htRNLbXVz4FNKQ5Tqd/DjHhYMFZTRArRQn/wvEYzAWadULy6paxqoLk4nHO MNixgVGAfM/c3q4t4wARAQABiQNyBBgBCgAmFiEEwUALoLOYnm+8fVtcK17iEcWK6lQFAlpu QSUCGwIFCQHl5YsBQAkQK17iEcWK6lTAdCAEGQEKAB0WIQQ2sKd2UH9WcARa4fmT0hTXNChl 8QUCWm5BJQAKCRCT0hTXNChl8V6ECADMpDZNCd1ssogUiPdOlOxOOysj/9vclhsoId8Xtb7T PmMFjEFdnqJuAHdZ6WkXc/aot5xhhEwJCOQrfsgNAji2KCVOg1pxAeOoIsoAx145xuPsz7Fc 7wTYNSlkFeaJ8F0eKpCJH6BEQebo5C9oLq5JvAg/4oKJ9AxZgh7Dup6BAiP2sKRclTfm046A eDjEYli+M5FRXZ7PVzil4x9VYkk9KII1xBdHSt178HvRHEUB91CDXSvOgWI9+OTmsmAYls8M IY2Xia6fLwBUspdg6m5BF7OTOTj5mSSWo5EsGsecQkkhGwiP0r1Gr5qbKmXlXPbIkjlxsvAu ohKIpEWK2M5OaRkP/iDSpREo5/StBenBUv+2QrhLP+uZJKiz5xbQ9Meo1l9z+bK1/5AGKca5 5M1APub2n0awP3MMDGMETTYK2RANsuuLxpD7uohzZf7m4iGz9V9EIBqkunuCpHHNhiZDK04R Oc5TMmKWFUvlXdFGwUOAydu8j/JcT+09GGU3vku2uHXHddI5vqe9Z/8JofC/XYviHIquo7P1 THmpjsGLIbBUq+mJ6xJgNLJcwNP9JbFZMXunFLlp7ZTVTiuTYhC/dBIfTJGIMjNClpWqHHn9 bGYsrNPtOmvNjwodRTQx2kengSL7ANk9BbA6DReFpWmPKLR/QJ8ucSJ9/np4Yn074rpxkWQD LTTOv87eT2ypBZaEDCGt3K7OBuknECovWTvkOTnMrb78QS8QqXvbVuiR+iITkIrMLG2FdGzy 6mXwwCEJxn5s9Y5Y31hPGlQnYDPAuYMrDVBRsIQVwAsWpV83vKjp4WFP4wC1LEYj+j/Oorqv ALsMRq49WSclOMvqDdh//wmfSAbkyn3EA6EMv9mxJHJvKW7PMXvO0Mk1uP/+VR3FudMXhZzz MUYlqpO3B/RmA7lPoMY5+Km8c4/6L9Bn0vcbGMH4piH0IuEK0px64oXtKfti47XrCX+EDpSn ZwhEnNjCKyAJTaangebRpvOwJUZUWVh+hpM5FMcwJGKvVXNmrmSj Message-ID: <5e1a0b67-510a-5512-d477-0b363e4733fe@pengutronix.de> Date: Sat, 3 Nov 2018 10:36:25 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20181102192616.28291-2-faiz_abbas@ti.com> Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/02/2018 08:26 PM, Faiz Abbas wrote: > In some subsystems (eg. CAN) the physical layer capabilities are > the limiting factor in the datarate of the device. Typically, the > physical layer transceiver does not provide a way to discover this > limitation at runtime. Thus this information needs to be represented as > a phy attribute which is read from the device tree. > > Therefore, add an optional max_bitrate attribute to the generic phy > sybsystem. Also add the complementary API which enables the consumer > to get max_bitrate. > > Signed-off-by: Faiz Abbas NACK - We already have such a functionality in the CAN subsystem. Please have a look at the patches: e759c626d826 can: m_can: Support higher speed CAN-FD bitrates b54f9eea7667 dt-bindings: can: m_can: Document new can transceiver binding 2290aefa2e90 can: dev: Add support for limiting configured bitrate 54a7fbcc17bc dt-bindings: can: can-transceiver: Document new binding regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |