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Mon, 27 Oct 2025 11:33:03 -0700 (PDT) Date: Mon, 27 Oct 2025 15:32:58 -0300 From: =?ISO-8859-1?Q?Eric_Gon=E7alves?= To: Konrad Dybcio CC: Krzysztof Kozlowski , Bjorn Andersson , Konrad Dybcio , Rob Herring , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 3/6] arm64: dts: qcom: r0q: add touchscreen support User-Agent: Thunderbird for Android In-Reply-To: <7e5f753d-a26d-40fb-9cde-ec17eff85c27@oss.qualcomm.com> References: <20251014044135.177210-1-ghatto404@gmail.com> <20251014044135.177210-4-ghatto404@gmail.com> <8bd5486f-38a9-4104-8d09-234f642b45fe@oss.qualcomm.com> <73d30994-3ec3-41bc-9b07-638d4173dfe6@oss.qualcomm.com> <7C2DF8E1-D84C-428C-B064-3D8CA16FEA29@gmail.com> <7e5f753d-a26d-40fb-9cde-ec17eff85c27@oss.qualcomm.com> Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On October 20, 2025 9:18:18 AM GMT-03:00, Konrad Dybcio wrote: >On 10/17/25 8:22 PM, Eric Gon=C3=A7alves wrote: >>=20 >>=20 >> On October 17, 2025 5:20:43 AM GMT-03:00, Konrad Dybcio wrote: >>> On 10/16/25 10:08 PM, Ghatto wrote: >>>> On Thu, Oct 16, 2025 at 6:06=E2=80=AFAM Konrad Dybcio >>>> wrote: >>>>> >>>>> >>>>> >>>>> On 10/14/25 9:04 PM, Ghatto wrote: >>>>>> On Tue, Oct 14, 2025 at 11:18=E2=80=AFAM Konrad Dybcio >>>>>> wrote: >>>>>>> >>>>>>> On 10/14/25 5:10 PM, Ghatto wrote: >>>>>>>> On Tue, Oct 14, 2025 at 7:01=E2=80=AFAM Konrad Dybcio >>>>>>>> wrote: >>>>>>>>> >>>>>>>>> On 10/14/25 6:41 AM, Eric Gon=C3=A7alves wrote: >>>>>>>>>> Enable the ST-Microelectronics FTS2BA61Y touchscreen=2E This pa= tch >>>>>>>>>> depends on "Input: add support for the STM FTS2BA61Y touchscree= n"=2E >>>>>>>>> >>>>>>>>> The second sentence doesn't really make sense to be included in >>>>>>>>> the git log >>>>>>>> I'll keep it to the cover letter then >>>>>>>>> >>>>>>>>>> The device has an issue where SPI 8 (the bus which the touchscr= een is >>>>>>>>>> connected to) is not working properly right now, so >>>>>>>>>> spi-gpio is used instead=2E >>>>>>>>> >>>>>>>>> Some Samsung devices used to use spi/i2c-gpio intentionally, als= o >>>>>>>>> on downstream=2E I'm assuming this isn't the case for r0q=2E >>>>>>>> It isn't, the device uses fts2ba61y on the spi8 bus - I hosted th= e >>>>>>>> DT at https://github=2Ecom/ghatt-o/ss_experiments/blob/main/r0q= =2Edts if you >>>>>>>> want to take a look=2E >>>>>>>>> >>>>>>>>> Did you enable gpi_dma1, qupv3_id_1 before spi8, when testing >>>>>>>> The driver probes, but it fails to recognize the touchscreen devi= ce >>>>>>> >>>>>>> Could you post a complete dmesg and the precise DT diff you used? >>>>>> https://pastebin=2Ecom/QkYa8nMp (android dmesg) mainline dmesg does= n't have >>>>> >>>>> The link has expired =F0=9F=99=81 >>>> https://pastebin=2Ecom/s4abJS9M shouldn't expire now! >>> >>> And yet it did! >>> >>> Feel free to just attach it to your message=2E=2E the list may bounce >>> it, but it will still reach the To/Cc recipients >> Attached the dmesg=2Etxt file=2E > >I'm interested in what happens early when the SPI hosts are programmed, >whether there's any additional debug messages=2E > >If your log buffer is overrunning, you can add log_buf_len=3D8M to your >cmdline (which will make the buffer 8MiB long) Is it that big of a deal though? spi-gpio works just fine for touchscreen=2E > >Konrad