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| author | Simon Glass <sjg@chromium.org> | 2015-02-17 15:29:35 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-05-05 20:58:18 -0600 |
| commit | 60e2809a848bccd3a8090d3f2237964670f2780c (patch) | |
| tree | 0e48144601cecacb6f58b2e32cf516c7281204f5 /include/spi.h | |
| parent | 172a31bf87bf299130a68320f08aa492c34ea3e0 (diff) | |
| download | u-boot-imx-60e2809a848bccd3a8090d3f2237964670f2780c.zip u-boot-imx-60e2809a848bccd3a8090d3f2237964670f2780c.tar.gz u-boot-imx-60e2809a848bccd3a8090d3f2237964670f2780c.tar.bz2 | |
dm: spi: Avoid setting the speed with every transfer
Only set the speed if it has changed from last time. Since the speed will
be 0 when the device is probed it will always be changed on the first
transfer after the device is probed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/spi.h')
| -rw-r--r-- | include/spi.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/spi.h b/include/spi.h index 9495ca5..3f198f8 100644 --- a/include/spi.h +++ b/include/spi.h @@ -100,6 +100,8 @@ struct dm_spi_slave_platdata { * @dev: SPI slave device * @max_hz: Maximum speed for this slave * @mode: SPI mode to use for this slave (see SPI mode flags) + * @speed: Current bus speed. This is 0 until the bus is first + * claimed. * @bus: ID of the bus that the slave is attached to. For * driver model this is the sequence number of the SPI * bus (bus->seq) so does not need to be stored @@ -117,6 +119,7 @@ struct spi_slave { #ifdef CONFIG_DM_SPI struct udevice *dev; /* struct spi_slave is dev->parentdata */ uint max_hz; + uint speed; uint mode; #else unsigned int bus; |