diff options
| author | Vignesh R | 2016-07-06 10:04:28 +0530 |
|---|---|---|
| committer | Jagan Teki | 2016-07-09 20:16:34 +0530 |
| commit | 96907c0fe50a856f66f60ade68864a2d7949bf15 (patch) | |
| tree | f1dd47ffe30d1fdf79c34e2685cfc81be4813a02 | |
| parent | e835a74159798723592e3c45d06793cd6acaf7ff (diff) | |
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>
| -rw-r--r-- | cmd/sf.c | 2 | ||||
| -rw-r--r-- | common/env_sf.c | 8 | ||||
| -rw-r--r-- | drivers/spi/spi-uclass.c | 8 |
3 files changed, 12 insertions, 6 deletions
@@ -88,6 +88,8 @@ static int do_spi_flash_probe(int argc, char * const argv[]) #ifdef CONFIG_DM_SPI_FLASH struct udevice *new, *bus_dev; int ret; + /* In DM mode defaults will be taken from DT */ + speed = 0, mode = 0; #else struct spi_flash *new; #endif diff --git a/common/env_sf.c b/common/env_sf.c index 273098ceb60..c53200f5c6f 100644 --- a/common/env_sf.c +++ b/common/env_sf.c @@ -55,9 +55,9 @@ int saveenv(void) #ifdef CONFIG_DM_SPI_FLASH struct udevice *new; + /* speed and mode will be read from DT */ ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, - CONFIG_ENV_SPI_MAX_HZ, - CONFIG_ENV_SPI_MODE, &new); + 0, 0, &new); if (ret) { set_default_env("!spi_flash_probe_bus_cs() failed"); return 1; @@ -245,9 +245,9 @@ int saveenv(void) #ifdef CONFIG_DM_SPI_FLASH struct udevice *new; + /* speed and mode will be read from DT */ ret = spi_flash_probe_bus_cs(CONFIG_ENV_SPI_BUS, CONFIG_ENV_SPI_CS, - CONFIG_ENV_SPI_MAX_HZ, - CONFIG_ENV_SPI_MODE, &new); + 0, 0, &new); if (ret) { set_default_env("!spi_flash_probe_bus_cs() failed"); return 1; diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 80aff7bc604..8003f9bfc86 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; |