| From c86da50cfd840edf223a242580913692acddbcf6 Mon Sep 17 00:00:00 2001 |
| From: Nicolas Le Bayon <nicolas.le.bayon@st.com> |
| Date: Wed, 6 Mar 2019 15:12:16 +0000 |
| Subject: i2c: i2c-stm32f7: Fix SDADEL minimum formula |
| |
| From: Nicolas Le Bayon <nicolas.le.bayon@st.com> |
| |
| commit c86da50cfd840edf223a242580913692acddbcf6 upstream. |
| |
| It conforms with Reference Manual I2C timing section. |
| |
| Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver") |
| Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com> |
| Signed-off-by: Bich Hemon <bich.hemon@st.com> |
| Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> |
| Signed-off-by: Wolfram Sang <wsa@the-dreams.de> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/i2c/busses/i2c-stm32f7.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/i2c/busses/i2c-stm32f7.c |
| +++ b/drivers/i2c/busses/i2c-stm32f7.c |
| @@ -432,7 +432,7 @@ static int stm32f7_i2c_compute_timing(st |
| STM32F7_I2C_ANALOG_FILTER_DELAY_MAX : 0); |
| dnf_delay = setup->dnf * i2cclk; |
| |
| - sdadel_min = setup->fall_time - i2c_specs[setup->speed].hddat_min - |
| + sdadel_min = i2c_specs[setup->speed].hddat_min + setup->fall_time - |
| af_delay_min - (setup->dnf + 3) * i2cclk; |
| |
| sdadel_max = i2c_specs[setup->speed].vddat_max - setup->rise_time - |
