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 X-Spam-Level: X-Spam-Status: No, score=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 210B9C4743D for ; Tue, 8 Jun 2021 10:33:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 076846124C for ; Tue, 8 Jun 2021 10:33:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231277AbhFHKfk (ORCPT ); Tue, 8 Jun 2021 06:35:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:55598 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229626AbhFHKfj (ORCPT ); Tue, 8 Jun 2021 06:35:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9421560FF1; Tue, 8 Jun 2021 10:33:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623148426; bh=XOwTUXNHiXyuQDOHS+WywOHtraHWTtRBTKQNiPv3kfY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZAzz1VdVhfK67TC0BjwLvjZUVKedewmKi997aGklRltFYJHKS9pIIqS+llx5WDEEs l23yJbkC86T+nqm2RBo67oQuzHwJodozPuGaAjb2fTihQh62MRLHhqDWFepZYTcWuS dCcCI3hYZzn+hUPqzW0hHHBHg7rETOGMRg4KnXKgdihezehA0fbUMKjvQGEJJiREo+ cBltxY2i8mVnjAvNXGdng6jjLJcFRw0cEe1bWX8wq7/eVw4OLXKIVxHtJjNpcR09zY RtFIGDklKuo8ASKUxQOZ7SKfft8Nl6Nsq6OQeL1viRgRPMNBXBb7D5bmHZAAS2Zz4q sSdqwJT0pC2/w== Received: by pali.im (Postfix) id CB3577CC; Tue, 8 Jun 2021 12:33:43 +0200 (CEST) Date: Tue, 8 Jun 2021 12:33:43 +0200 From: Pali =?utf-8?B?Um9ow6Fy?= To: "Russell King (Oracle)" Cc: Hauke Mehrtens , Vladimir Oltean , Madalin Bucur , Andrew Lunn , Igal Liberman , Shruti Kanetkar , Emil Medve , Scott Wood , Rob Herring , Michael Ellerman , Benjamin Herrenschmidt , "netdev@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "Camelia Alexandra Groza (OSS)" Subject: Re: What is inside GPON SFP module? Message-ID: <20210608103343.dyogfexuase5kddo@pali> References: <20210604192732.GW30436@shell.armlinux.org.uk> <20210604233455.fwcu2chlsed2gwmu@pali> <20210605003306.GY30436@shell.armlinux.org.uk> <20210605122639.4lpox5bfppoyynl3@skbuf> <20210605125004.v6njqob6prb7k75k@pali> <80966478-8a7c-b66f-50b7-e50fc00b1784@hauke-m.de> <20210605144105.GZ30436@shell.armlinux.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210605144105.GZ30436@shell.armlinux.org.uk> User-Agent: NeoMutt/20180716 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 05 June 2021 15:41:05 Russell King (Oracle) wrote: > On Sat, Jun 05, 2021 at 03:04:55PM +0200, Hauke Mehrtens wrote: > > Is there a list of things these GPON sticks running Linux should do better > > in the future? For example what to avoid in the EEPROM emulation handling? > > That is just not worth persuing. Large ISP-companies who have plenty of > buying power have tried to get issues with GPON sticks resolved, and the > response from the GPON stick manufacturers has not been helpful. I had > contracted with a national telco over this problem in recent years, and > I know they tried their best. > > If large ISP companies who are significant customers can't effect any > fixes, you can be absolutely sure that the voluntary effort around the > Linux kernel will have no effect. I see :-( So it does not make sense to try to do anything... > Yes, we list the modules that don't work well in the kernel source, and > sometimes we name and shame them, but they don't care. > > For example, there is are a few modules that take up to 60 seconds > before they respond to any I2C requests, because the I2C is entirely > emulated by the Linux kernel running on the stick, and it takes that > long for the stick to boot. Will that ever get fixed? Probably not > without a hardware redesign. Will that happen? I really doubt it, and > eevn if it did it doesn't affect the millions of sticks already out > there. > > IMHO trying to get these issues fixed is pie in the sky. > > > -- > RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ > FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!