6.16-stable review patch. If anyone has any objections, please let me know.
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From: Kathiravan Thirumoorthy kathiravan.thirumoorthy@oss.qualcomm.com
commit 85c34532849dae0fdcf880900ac9d7718a73fd1b upstream.
Update the I2C frequency table to match the recommended values specified in the I2C hardware programming guide. In the current IPQ5424 configuration where 32MHz is the source clock, the I2C bus frequencies do not meet expectations—for instance, 363KHz is achieved instead of the expected 400KHz.
Fixes: 506bb2ab0075 ("i2c: qcom-geni: Support systems with 32MHz serial engine clock") Signed-off-by: Kathiravan Thirumoorthy kathiravan.thirumoorthy@oss.qualcomm.com Cc: stable@vger.kernel.org # v6.13+ Reviewed-by: Mukesh Kumar Savaliya quic_msavaliy@quicinc.com Signed-off-by: Andi Shyti andi.shyti@kernel.org Link: https://lore.kernel.org/r/20250513-i2c-bus-freq-v1-1-9a333ad5757f@oss.qualco... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/i2c/busses/i2c-qcom-geni.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -155,9 +155,9 @@ static const struct geni_i2c_clk_fld gen
/* source_clock = 32 MHz */ static const struct geni_i2c_clk_fld geni_i2c_clk_map_32mhz[] = { - { I2C_MAX_STANDARD_MODE_FREQ, 8, 14, 18, 40 }, - { I2C_MAX_FAST_MODE_FREQ, 4, 3, 11, 20 }, - { I2C_MAX_FAST_MODE_PLUS_FREQ, 2, 3, 6, 15 }, + { I2C_MAX_STANDARD_MODE_FREQ, 8, 14, 18, 38 }, + { I2C_MAX_FAST_MODE_FREQ, 4, 3, 9, 19 }, + { I2C_MAX_FAST_MODE_PLUS_FREQ, 2, 3, 5, 15 }, {} };