mfd: mc13xxx: Limit maximum SPI speed

The patch adds the maximum speed limit in accordance with the
PMIC datasheet if other value is not given in the devicetree
description or board data.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c
index 38ab67829791b1b8d7b5c2d33d24ac66999f2a3f..ee81a67207dea56e77a43a373c3068261b8fed73 100644 (file)
--- a/drivers/mfd/mc13xxx-spi.c
+++ b/drivers/mfd/mc13xxx-spi.c
@@ -140,6 +140,8 @@ static int mc13xxx_spi_probe(struct spi_device *spi)
 
        mc13xxx->irq = spi->irq;
 
+       spi->max_speed_hz = spi->max_speed_hz ? : 26000000;
+
        mc13xxx->regmap = devm_regmap_init(&spi->dev, &regmap_mc13xxx_bus,
                                           &spi->dev,
                                           &mc13xxx_regmap_spi_config);