linux-kernel - [PATCH v6 4/6] mfd: stm32: enable regmap fast

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Message-ID: <20200401083909.18886-5-benjamin.gaignard@st.com>
Date:   Wed, 1 Apr 2020 10:39:07 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...com>
To:     <fabrice.gasnier@...com>, <lee.jones@...aro.org>,
        <robh+dt@...nel.org>, <mark.rutland@....com>,
        <mcoquelin.stm32@...il.com>, <alexandre.torgue@...com>,
        <daniel.lezcano@...aro.org>, <tglx@...utronix.de>
CC:     <devicetree@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Benjamin Gaignard <benjamin.gaignard@...com>
Subject: [PATCH v6 4/6] mfd: stm32: enable regmap fast_io for stm32-lptimer

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@...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