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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b9832f8d3e6sm620451066b.20.2026.03.24.02.42.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Mar 2026 02:42:16 -0700 (PDT) Message-ID: <195b2ec2-d51a-42b2-8221-2a60823f8ea6@oss.qualcomm.com> Date: Tue, 24 Mar 2026 10:42:13 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/3] arm64: dts: qcom: sdm845-shift-axolotl: Set higher touchscreen i2c clock To: David Heidelberg , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dylan Van Assche Cc: linux-arm-msm@vger.kernel.org, Petr Hodina , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, Casey Connolly References: <20260320-axolotl-misc-p1-v1-0-89c9b5ecb26e@ixit.cz> <20260320-axolotl-misc-p1-v1-2-89c9b5ecb26e@ixit.cz> <182a6226-bb23-4ad6-b454-4913ab461264@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzI0MDA3NiBTYWx0ZWRfX1eIOQqNocorP VytiiMZsKsAEY5W8zKcNsHUgTVVHzJYLbV8fUhtha5mEZ6vA2nwfko8WHBrKn1PIw+yF42Kv60s 2atjQdyqUkel9yG+XhDgPEEV/tMfU/Rd6u3u6/dpSybmpw9XEFLsiVk/h910kZcy3kfSEtkpOHo eQtvODZIyoQncVEoK4W4LqLNyzv0vvgRxDjN3NOdUxRNeVOGTtv/SDITGgI3L4rIEVIuiHGkIQB xiCz0FPsnk/xNmv//bWUTw+S9KqIUGP6CFZXTKE3q7Hv12PX4QFtWVFIKqNtWf+Vp85QcnVcssq tZEa7vNfQaQyE6MHiN7LGXLYUqdZUtAix/ItQblc1BC0YXQrGUL2l6FRmm6HsaJJen5pX8Hg6zA U8cDjF1f/3r2N8RFAyGngg4CF4Z8kLWwxFma09C+u1wn4HyZEGrdlVCxI08v3LvwkgDwXrXqify RtjeriEBrYbUu4bkqxw== X-Proofpoint-ORIG-GUID: lcqRF86PM2VIDoSre8hvmL_1nw021-nZ X-Authority-Analysis: v=2.4 cv=F6hat6hN c=1 sm=1 tr=0 ts=69c25c7b cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=dZw9lnDFAAAA:20 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=oSXFT4061vmgito90VsA:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 a=cvBusfyB2V15izCimMoJ:22 a=bA3UWDv6hWIuX7UZL3qL:22 X-Proofpoint-GUID: lcqRF86PM2VIDoSre8hvmL_1nw021-nZ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-24_02,2026-03-23_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 spamscore=0 priorityscore=1501 malwarescore=0 adultscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603240076 On 3/24/26 12:15 AM, David Heidelberg wrote: > > > On 23/03/2026 10:56, Konrad Dybcio wrote: >> On 3/20/26 5:29 PM, David Heidelberg via B4 Relay wrote: >>> From: Casey Connolly >>> >>> Sets a higher rate than the default for good responsiveness of >>> touchscreen. >>> >>> Signed-off-by: Casey Connolly >>> Signed-off-by: David Heidelberg >>> --- >> >> I assume this is in line with downstream (i.e. you're not trying to make >> the panel IC work too hard?) > > When bus frequency is not specified in DTS (which isn't in this case), downstream set i2c bus to 400 kHz. > > See > https://github.com/SHIFTPHONES/android_kernel_shift_sdm845/blob/lineage/lineage-20/drivers/i2c/busses/i2c-qcom-geni.c#L894 OK Reviewed-by: Konrad Dybcio Konrad