From: Mukesh Kumar Savaliya Date: Wed, 22 Jan 2025 06:46:34 +0000 (+0530) Subject: i2c: qcom-geni: Update i2c frequency table to match hardware guidance X-Git-Tag: v6.14.9~683 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0511976e3be6fd49faeee25998207616322f83a5;p=thirdparty%2Fkernel%2Fstable.git i2c: qcom-geni: Update i2c frequency table to match hardware guidance [ Upstream commit a815975cbaeb4ab29f45312ef23be2871b2e8b82 ] With the current settings, the I2C buses are achieving around 370KHz instead of the expected 400KHz. For 100KHz and 1MHz, the settings are now more compliant and adhere to the Qualcomm’s internal programming guide. Update the I2C frequency table to align with the recommended values outlined in the I2C hardware programming guide, ensuring proper communication and performance. Signed-off-by: Mukesh Kumar Savaliya Reviewed-by: Vladimir Zapolskiy Link: https://lore.kernel.org/r/20250122064634.2864432-1-quic_msavaliy@quicinc.com Signed-off-by: Andi Shyti Signed-off-by: Sasha Levin --- diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c index 7bbd478171e02..515a784c951ca 100644 --- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -148,9 +148,9 @@ struct geni_i2c_clk_fld { * source_clock = 19.2 MHz */ static const struct geni_i2c_clk_fld geni_i2c_clk_map_19p2mhz[] = { - {KHZ(100), 7, 10, 11, 26}, - {KHZ(400), 2, 5, 12, 24}, - {KHZ(1000), 1, 3, 9, 18}, + {KHZ(100), 7, 10, 12, 26}, + {KHZ(400), 2, 5, 11, 22}, + {KHZ(1000), 1, 2, 8, 18}, {}, };