From: Benjamin Gaignard <benjamin.gaignard@st.com>
To: <fabrice.gasnier@st.com>, <lee.jones@linaro.org>,
<robh+dt@kernel.org>, <mark.rutland@arm.com>,
<mcoquelin.stm32@gmail.com>, <alexandre.torgue@st.com>,
<daniel.lezcano@linaro.org>, <tglx@linutronix.de>
Cc: <devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Benjamin Gaignard <benjamin.gaignard@st.com>
Subject: [PATCH v5 4/6] mfd: stm32: enable regmap fast_io for stm32-lptimer
Date: Tue, 31 Mar 2020 10:31:44 +0200 [thread overview]
Message-ID: <20200331083146.10462-5-benjamin.gaignard@st.com> (raw)
In-Reply-To: <20200331083146.10462-1-benjamin.gaignard@st.com>
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(+)
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)
--
2.15.0
next prev parent reply other threads:[~2020-03-31 8:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 8:31 [PATCH v5 0/6] clockevent: add low power STM32 timer Benjamin Gaignard
2020-03-31 8:31 ` [PATCH v5 1/6] dt-bindings: mfd: Document STM32 low power timer bindings Benjamin Gaignard
2020-03-31 16:49 ` Rob Herring
2020-03-31 8:31 ` [PATCH v5 2/6] ARM: dts: stm32: Add timer subnodes on stm32mp15 SoCs Benjamin Gaignard
2020-03-31 8:31 ` [PATCH v5 3/6] mfd: stm32: Add defines to be used for clkevent purpose Benjamin Gaignard
2020-03-31 8:31 ` Benjamin Gaignard [this message]
2020-03-31 8:31 ` [PATCH v5 5/6] clocksource: Add Low Power STM32 timers driver Benjamin Gaignard
2020-03-31 8:31 ` [PATCH v5 6/6] ARM: mach-stm32: select low power timer for STM32MP157 Benjamin Gaignard
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