From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [PATCH v4 2/2] i2c: Add Qualcomm CCI I2C driver References: <20180820063953.6866-1-vkoul@kernel.org> <20180820063953.6866-3-vkoul@kernel.org> <153509585617.28926.14526626631390463379@swboyd.mtv.corp.google.com> <20180824101635.GO2388@vkoul-mobl> <153539758798.129321.2300393649173468216@swboyd.mtv.corp.google.com> <20180828033851.GA2388@vkoul-mobl> <20180921153601.GF2350@vkoul-mobl> From: Todor Tomov Message-ID: Date: Fri, 21 Sep 2018 08:43:09 -0700 MIME-Version: 1.0 In-Reply-To: <20180921153601.GF2350@vkoul-mobl> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit To: Vinod , Ricardo Ribalda Delgado Cc: swboyd@chromium.org, wsa+renesas@sang-engineering.com, linux-i2c@vger.kernel.org, bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, Rob Herring , devicetree@vger.kernel.org List-ID: Hi Vinod, On 21.09.2018 08:36, Vinod wrote: > Hi Ricardo, > > On 20-09-18, 21:39, Ricardo Ribalda Delgado wrote: >> Sorry to enter the discussion this late. >> >> I have been using this driver with release/qcomlt-4.14 on a db820c and >> if I try to use the i2c bus before camss is running I get a Timeout >> error and the bus is unusable after that. I have sent a patch that >> fixes this issue, in case you want to merge it/add it before this >> driver goes upstream. > > Thanks for this, I will test and port the fix to upstream and send it > along. > >> Is there a way to use the i2c bus without using the camera? > > This is Camera specific bus but it is an i2c bus, so theoretically it > should be possible to do so, Todor do you know if that is doable/done? I'm not aware of such experiments but yes, if you manage to connect another i2c hardware it should be possible to control it. -- Best regards, Todor Tomov