diff options
| author | Fabrice Gasnier <fabrice.gasnier@st.com> | 2018-05-16 10:36:00 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2018-05-16 11:11:19 +0300 |
| commit | ab3a897847834bf3e864fb07b733c444895a24ba (patch) | |
| tree | b451c46ce5f7250e455fd71a3598267b8a7f5514 /include | |
| parent | d66ffb91c374fc500fe666645184e278774bad38 (diff) | |
| download | linux-ab3a897847834bf3e864fb07b733c444895a24ba.tar.xz | |
pwm: stm32: Use input prescaler to improve period capture
Using input prescaler, capture unit will trigger DMA once every
configurable /2, /4 or /8 events (rising edge). This helps improve
period (only) capture accuracy at high rates.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/mfd/stm32-timers.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mfd/stm32-timers.h b/include/linux/mfd/stm32-timers.h index d46f5500928e..9da1d7ece079 100644 --- a/include/linux/mfd/stm32-timers.h +++ b/include/linux/mfd/stm32-timers.h @@ -82,6 +82,7 @@ #define TIM_DCR_DBL GENMASK(12, 8) /* DMA burst len */ #define MAX_TIM_PSC 0xFFFF +#define MAX_TIM_ICPSC 0x3 #define TIM_CR2_MMS_SHIFT 4 #define TIM_CR2_MMS2_SHIFT 20 #define TIM_SMCR_TS_SHIFT 4 |