Add support for a live device tree to the core serial uclass.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v2: None
drivers/serial/serial-uclass.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c index ede5c2c0be..976b99ce7c 100644 --- a/drivers/serial/serial-uclass.c +++ b/drivers/serial/serial-uclass.c @@ -14,6 +14,7 @@ #include <watchdog.h> #include <dm/lists.h> #include <dm/device-internal.h> +#include <dm/of_access.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -81,9 +82,20 @@ static void serial_find_console_or_panic(void) return; } } else if (CONFIG_IS_ENABLED(OF_CONTROL) && blob) { - if (!serial_check_stdout(blob, &dev)) { - gd->cur_serial_dev = dev; - return; + /* Live tree has support for stdout */ + if (of_live_active()) { + struct device_node *np = of_get_stdout(); + + if (np && !uclass_get_device_by_ofnode(UCLASS_SERIAL, + np_to_ofnode(np), &dev)) { + gd->cur_serial_dev = dev; + return; + } + } else { + if (!serial_check_stdout(blob, &dev)) { + gd->cur_serial_dev = dev; + return; + } } } if (!SPL_BUILD || !CONFIG_IS_ENABLED(OF_CONTROL) || !blob) {