| Message ID | 20200401083909.18886-5-benjamin.gaignard@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | clockevent: add low power STM32 timer | expand |
On 4/1/20 10:39 AM, Benjamin Gaignard wrote: > Because stm32-lptimer need to write in registers in interrupt context > enable regmap fast_io to use a spin_lock to protect registers access > rather than a mutex. > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> > --- > drivers/mfd/stm32-lptimer.c | 1 + > 1 file changed, 1 insertion(+) Hi Benjamin, Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Thanks, Fabrice > > diff --git a/drivers/mfd/stm32-lptimer.c b/drivers/mfd/stm32-lptimer.c > index a00f99f36559..746e51a17cc8 100644 > --- a/drivers/mfd/stm32-lptimer.c > +++ b/drivers/mfd/stm32-lptimer.c > @@ -17,6 +17,7 @@ static const struct regmap_config stm32_lptimer_regmap_cfg = { > .val_bits = 32, > .reg_stride = sizeof(u32), > .max_register = STM32_LPTIM_MAX_REGISTER, > + .fast_io = true, > }; > > static int stm32_lptimer_detect_encoder(struct stm32_lptimer *ddata) >
On Wed, 01 Apr 2020, Benjamin Gaignard wrote: > Because stm32-lptimer need to write in registers in interrupt context > enable regmap fast_io to use a spin_lock to protect registers access > rather than a mutex. > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> > --- > drivers/mfd/stm32-lptimer.c | 1 + > 1 file changed, 1 insertion(+) For my own reference: Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/stm32-lptimer.c b/drivers/mfd/stm32-lptimer.c index a00f99f36559..746e51a17cc8 100644 --- a/drivers/mfd/stm32-lptimer.c +++ b/drivers/mfd/stm32-lptimer.c @@ -17,6 +17,7 @@ static const struct regmap_config stm32_lptimer_regmap_cfg = { .val_bits = 32, .reg_stride = sizeof(u32), .max_register = STM32_LPTIM_MAX_REGISTER, + .fast_io = true, }; static int stm32_lptimer_detect_encoder(struct stm32_lptimer *ddata)
Because stm32-lptimer need to write in registers in interrupt context enable regmap fast_io to use a spin_lock to protect registers access rather than a mutex. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> --- drivers/mfd/stm32-lptimer.c | 1 + 1 file changed, 1 insertion(+)