| Message ID | 1460542029-10299-1-git-send-email-vigneshr@ti.com |
|---|---|
| State | Superseded |
| Delegated to: | Jagannadha Sutradharudu Teki |
| Headers | show |
On 04/13/2016 03:37 PM, Vignesh R wrote: > In case of DT boot, don't read default speed 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. > > Signed-off-by: Vignesh R <vigneshr@ti.com> > --- > Please ignore this patch. I have sent v3 with updated commit message. Sorry for the spam. > v2: Initialize speed, mode to 0 instead of -1 > > cmd/sf.c | 2 ++ > drivers/spi/spi-uclass.c | 8 ++++++-- > 2 files changed, 8 insertions(+), 2 deletions(-) > > diff --git a/cmd/sf.c b/cmd/sf.c > index 42862d9d921a..286906c3a151 100644 > --- a/cmd/sf.c > +++ b/cmd/sf.c > @@ -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/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c > index 5561f36762f9..5fb5630e2981 100644 > --- a/drivers/spi/spi-uclass.c > +++ b/drivers/spi/spi-uclass.c > @@ -264,6 +264,7 @@ 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; > > @@ -280,8 +281,6 @@ 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); > @@ -308,6 +307,11 @@ 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; >
diff --git a/cmd/sf.c b/cmd/sf.c index 42862d9d921a..286906c3a151 100644 --- a/cmd/sf.c +++ b/cmd/sf.c @@ -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/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c index 5561f36762f9..5fb5630e2981 100644 --- a/drivers/spi/spi-uclass.c +++ b/drivers/spi/spi-uclass.c @@ -264,6 +264,7 @@ 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; @@ -280,8 +281,6 @@ 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); @@ -308,6 +307,11 @@ 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;
In case of DT boot, don't read default speed 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. Signed-off-by: Vignesh R <vigneshr@ti.com> --- v2: Initialize speed, mode to 0 instead of -1 cmd/sf.c | 2 ++ drivers/spi/spi-uclass.c | 8 ++++++-- 2 files changed, 8 insertions(+), 2 deletions(-)