[RESEND,v6,4/6] mfd: stm32: enable regmap fast_io for stm32-lptimer

Message ID 20200420085930.26989-5-benjamin.gaignard@st.com
State Superseded
Headers show
Series
  • [RESEND,v6,1/6] dt-bindings: mfd: Document STM32 low power timer bindings
Related show

Commit Message

Benjamin Gaignard April 20, 2020, 8:59 a.m.
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>
Acked-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/mfd/stm32-lptimer.c | 1 +
 1 file changed, 1 insertion(+)

Patch

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)