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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-141245a9f70sm9942865c88.15.2026.08.12.01.31.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2026 01:31:03 -0700 (PDT) From: Kathiravan Thirumoorthy Subject: [PATCH v2 0/2] I2C SCL counter updates for Qualcomm IPQ5424 SoC Date: Wed, 12 Aug 2026 14:00:54 +0530 Message-Id: <20260812-ipq5424_i2c_scl_updates-v2-0-e09cd39d01d7@oss.qualcomm.com> 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: 7bit X-B4-Tracking: v=1; b=H4sIAD8vfGoC/3WNQQqDMBREryJZN5IEFe2q9ygiyc+3pqjRfJUW8 e5V2203Aw9m5q2MMDgkdo1WFnBx5Hy/g7pEDBrdP5A7uzNTQmUiFzl3w5gmKqmcgoqgrebB6gm J1zIrMi3SQtTA9vUQsHav8/lefplm80SYjruj0TiafHif6kUevZ9Fyr+WRXLBjbVgFCAaq2+eK B5n3YLvungPVm7b9gH8J6U/1wAAAA== X-Change-ID: 20260808-ipq5424_i2c_scl_updates-f1696a0590fc To: Mukesh Kumar Savaliya , Viken Dadhaniya , Andi Shyti , Manikanta Mylavarapu , Bjorn Andersson , Konrad Dybcio Cc: Mukesh Kumar Savaliya , linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Kathiravan Thirumoorthy , stable@vger.kernel.org X-Mailer: b4 0.15.2 X-Proofpoint-Spam-Info: AW1haW4tMjYwODEyMDA2NyBTYWx0ZWRfX56/+FpLYRGHp 1ZIiHGw+tLJJSj/v0aE0vsND/Jeu8D+A5OMjQu5r1PnR046BLCYprO+DWya2ddAzqn5SATK8BnY +hiyI3RAwHj++Pn2I6CvWXhqUJGAyu8= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEyMDA2NyBTYWx0ZWRfX/w6CPRRUsPiu 5NT4nZxhfb2hujGYkx/2/gFACTgJZDjy+LJRGGhx5E3TuBiVLoe9mP4mYT5FCJUTRrXII2XTTCh VpaLi4rveg20OQMC9TxsBYmon3eC0HqW+xKHomAV6OsO8Z72b5D0lsp8L3MaC8vvxnZ/Lnntf7C foYnE4pMcrsmAJcaWbHnGaFyo5JPAHkW9AnZlbYs6PIfbYov9qeCfWqjSb6FVSJcKnrb0a9Aeab CFv8iBZ/jLztYeYmtJepmWsuvrUNXqXSx2CP4a2+AIlK8XdlU5PhJ597fCYCE6z0ZK9PEX2FgjG T8p5LS0hFv00R5qDGilg1FXLVPLPm4G3LnCYMTEUDScXYK/oiKi/tXJNyTGKMhFivNBpFEeAZci fDHEAoEkOEUcKjQIioKxnDjgcSCcWo3jgvac9iaRvH7k3TKP+2UwRcmPVJf7+Ila5RbTr01YCT/ tPezJ2M8wac7mfUk0oA== X-Proofpoint-GUID: aa8YFl5_DFntwJrF2xgO217ha7GbaENF X-Authority-Analysis: v=2.4 cv=C87ZDwP+ c=1 sm=1 tr=0 ts=6a7c2f4a cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=bC-a23v3AAAA:8 a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=COk6AnOGAAAA:8 a=cGTXhytWI82EO-564y4A:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 a=FO4_E8m0qiDe52t0p3_H:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: aa8YFl5_DFntwJrF2xgO217ha7GbaENF 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=2026-08-12_02,2026-08-10_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 spamscore=0 clxscore=1015 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608120067 To meet the specification requirement in the standard-mode bus frequency, update the SCL counters as recommended by the design team. IPQ5424 uses 32MHz source clock for the I2C and I2C is supported on both RTL-hardened and firmware based SEs. The driver already provides SCL timing parameters for a 32 MHz source clock, but the resulting I2C bus frequencies do not meet the required specification on firmware-based SEs. As recommended by the hardware design team, use a separate set of SCL timing parameters for firmware-based SEs. Introduce a dedicated frequency table and select the appropriate table based on the SE type. Signed-off-by: Kathiravan Thirumoorthy --- Changes in v2: - Reworded the commit message to provide more background - s/geni_i2c_clk_map_32mhz/geni_i2c_clk_map_32mhz_minicore/ - Link to v1: https://patch.msgid.link/20260811-ipq5424_i2c_scl_updates-v1-0-bddcb2ceebda@oss.qualcomm.com To: Mukesh Kumar Savaliya To: Viken Dadhaniya To: Andi Shyti To: Kathiravan Thirumoorthy To: Manikanta Mylavarapu To: Bjorn Andersson To: Konrad Dybcio Cc: Mukesh Kumar Savaliya Cc: linux-i2c@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- Kathiravan Thirumoorthy (2): i2c: qcom-geni: update frequency table to fix timing parameters i2c: qcom-geni: add I2C frequency table for 32 MHz firmware-based SEs drivers/i2c/busses/i2c-qcom-geni.c | 29 ++++++++++++++++++++--------- include/linux/soc/qcom/geni-se.h | 1 + 2 files changed, 21 insertions(+), 9 deletions(-) --- base-commit: 3d08ff75a47a3e7e2ab45a3bcab6723b4d906422 change-id: 20260808-ipq5424_i2c_scl_updates-f1696a0590fc Best regards, -- Kathiravan Thirumoorthy