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Tue, 18 Aug 2026 05:07:02 -0700 (PDT) X-Received: by 2002:a05:6102:5091:b0:72f:6669:286a with SMTP id ada2fe7eead31-76f2c540eb2mr2350089137.2.1787054822392; Tue, 18 Aug 2026 05:07:02 -0700 (PDT) Received: from [192.168.120.193] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c2185b74059sm144679166b.38.2026.08.18.05.07.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Aug 2026 05:07:01 -0700 (PDT) Message-ID: <18880390-0407-4efd-bd2e-1595193d78e0@oss.qualcomm.com> Date: Tue, 18 Aug 2026 14:06:59 +0200 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 v4 3/5] i2c: qcom-cci: Add 19.2 MHz timings for the v2 CCI To: Loic Poulain , Robert Foss , Andi Shyti , Wolfram Sang , Dmitry Baryshkov , Luca Weiss Cc: linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, vladimir.zapolskiy@linaro.org, konradybcio@kernel.org, stephan.gerhold@linaro.org References: <20260801-cci-clk-fix-v4-0-e1d80da54e01@oss.qualcomm.com> <20260801-cci-clk-fix-v4-3-e1d80da54e01@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260801-cci-clk-fix-v4-3-e1d80da54e01@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYwODE4MDA4OSBTYWx0ZWRfX1ihvQk/triHF ph8sN8QzUqmh2hd42O5hSkaHLyt+z+efGHEX9oZ3bJL/ZFZTFsi2mB16UnDb5Kzf5LGggmy8f7j BuC86n/V13Oe6CkgA4bCUlTBL7rTDjQ= X-Proofpoint-ORIG-GUID: _C76qbD7ouWTVuDBW7g9WnhPG74aeIiU X-Authority-Analysis: v=2.4 cv=UfFhjqSN c=1 sm=1 tr=0 ts=6a844ae7 cx=c_pps a=ULNsgckmlI/WJG3HAyAuOQ==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=IUKAjBX749pkMcdBEW8A:9 a=QEXdDO2ut3YA:10 a=1WsBpfsz9X-RYQiigVTh:22 X-Proofpoint-GUID: _C76qbD7ouWTVuDBW7g9WnhPG74aeIiU X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE4MDA4OSBTYWx0ZWRfX3gCNBYuTfs92 u9C3lWmJ3c0KjE/l1ZjDnPW/55jX2VR0pfSd0gLTWh1uMV6vmZDY0zGTb20x9AhuHyMbkGGdVYb 6kOfruHYR/qne9kL2K2VG4k0gNR2DU4zSlyF2OYKniCk2q5cXsU9BILJ7/2s51Z80GpcwnrQOVM JJmnbBcmAGmKsbgJTeabDFcPHDCJJDrCIXhVvU0NUgu1oDG/lQl3v58PeyLxcngq48IKN0MRp0f P4OEeBNUgIjoLenTuiy3olzodEwc17picn3dBhugLw5i46WugwlSCOWiHRtijhk9EN6sQCv/cnI 9ZCjMX20hrz4jKbZP2ix+kuoWTgahBhMdypnH+GPCxZPBtHnChvnZHlMbUaannJxwtdr9Noftl1 rFubZkOBLS1VMZG0vP3EC0KQbVUfgVKwbzCP1KB9V5SkK5Rv9dmzDr4TPlUsV01JAzQ38ekeMxi qLfSfcdFdhQnR3pDN3w== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-18_01,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 adultscore=0 spamscore=0 priorityscore=1501 clxscore=1015 phishscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608180089 On 8/1/26 10:10 PM, Loic Poulain wrote: > The v2 CCI (msm8996/sdm630/msm8953/...) is normally clocked at 37.5 MHz, > but its CCI clock can also be configured and run at 19.2 MHz. Add the > Standard and Fast timing sets calibrated for 19.2 MHz so that a v2 > controller left at that rate still has valid timings for those modes > (Fast+ requires 37.5 MHz). The v2 naming is misleading btw - we have e.g.: v1.0.7 on 8974 v1.1.0 on 8916 v1.4.0 on 8996 v1.6.0 on 8998 v1.6.3 on 630/660 v1.7.0 on 845-8550+hamoa otherwise Reviewed-by: Konrad Dybcio Konrad