diff options
| author | Vignesh R <vigneshr@ti.com> | 2016-07-06 10:04:28 +0530 |
|---|---|---|
| committer | Jagan Teki <jteki@openedev.com> | 2016-07-09 20:16:34 +0530 |
| commit | 96907c0fe50a856f66f60ade68864a2d7949bf15 (patch) | |
| tree | f1dd47ffe30d1fdf79c34e2685cfc81be4813a02 /drivers/spi | |
| parent | e835a74159798723592e3c45d06793cd6acaf7ff (diff) | |
| download | u-boot-96907c0fe50a856f66f60ade68864a2d7949bf15.tar.gz | |
dm: spi: Read default speed and mode values from DT
In case of DT boot, don't read default speed and mode for SPI from
CONFIG_*, instead read from DT node. This will make sure that boards
with multiple SPI/QSPI controllers can be probed at different
bus frequencies and SPI modes.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-uclass.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 80aff7bc60..8003f9bfc8 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -278,6 +278,7 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, struct udevice **busp, struct spi_slave **devp) { struct udevice *bus, *dev; + struct dm_spi_slave_platdata *plat; bool created = false; int ret; @@ -294,8 +295,6 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, * SPI flash chip - we will bind to the correct driver. */ if (ret == -ENODEV && drv_name) { - struct dm_spi_slave_platdata *plat; - debug("%s: Binding new device '%s', busnum=%d, cs=%d, driver=%s\n", __func__, dev_name, busnum, cs, drv_name); ret = device_bind_driver(bus, drv_name, dev_name, &dev); @@ -322,6 +321,11 @@ int spi_get_bus_and_cs(int busnum, int cs, int speed, int mode, slave->dev = dev; } + plat = dev_get_parent_platdata(dev); + if (!speed) { + speed = plat->max_hz; + mode = plat->mode; + } ret = spi_set_speed_mode(bus, speed, mode); if (ret) goto err; |