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spi.c: removed hard frequency cap in mraa_spi_init_raw()

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We rely on driver-supplied information in mraa_spi_frequency(),
so let's be consistent.

Closes #132.

Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
This commit is contained in:
Alex Tereschenko
2016-03-28 17:05:09 +02:00
committed by Brendan Le Foll
parent e1c500414b
commit ecf049eccd
1 changed files with 3 additions and 1 deletions
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4
src/spi/spi.c
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@@ -143,10 +143,12 @@ mraa_spi_init_raw(unsigned int bus, unsigned int cs)
}
int speed = 0;
if ((ioctl(dev->devfd, SPI_IOC_RD_MAX_SPEED_HZ, &speed) != -1) && (speed < 4000000)) {
if (ioctl(dev->devfd, SPI_IOC_RD_MAX_SPEED_HZ, &speed) != -1) {
dev->clock = speed;
} else {
// We had this on Galileo Gen1, so let it be a fallback value
dev->clock = 4000000;
syslog(LOG_WARNING, "spi: Max speed query failed, setting %d", dev->clock);
}
if (mraa_spi_mode(dev, MRAA_SPI_MODE0) != MRAA_SUCCESS) {