[PATCH v2 0/2] I2C SCL counter updates for Qualcomm IPQ5424 SoC
Kathiravan Thirumoorthy <[email protected]> Wed, 12 Aug 2026 14:00:54 +0530
| Newsgroups | org.kernel.vger.linux-i2c,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel,org.kernel.vger.stable |
|---|---|
| Message-ID | <20260812-ipq5424_i2c_scl_updates-v2-0-e09cd39d01d7@oss.qualcomm.com> |
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 <[email protected]> --- 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 <[email protected]> To: Viken Dadhaniya <[email protected]> To: Andi Shyti <[email protected]> To: Kathiravan Thirumoorthy <[email protected]> To: Manikanta Mylavarapu <[email protected]> To: Bjorn Andersson <[email protected]> To: Konrad Dybcio <[email protected]> Cc: Mukesh Kumar Savaliya <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] --- 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 <[email protected]>