Re: [PATCH 2/2] console: respect baudrate specified in device-tree stdout-path
From: Sascha Hauer <hidden>
Date: 2021-06-21 05:01:18
Hi Ahmad, On Sat, Jun 19, 2021 at 05:26:54AM +0200, Ahmad Fatoum wrote:
quoted hunk ↗ jump to hunk
-static void console_set_stdoutpath(struct console_device *cdev) +static void console_set_stdoutpath(struct console_device *cdev, unsigned baudrate) { int id; char *str;@@ -232,8 +232,7 @@ static void console_set_stdoutpath(struct console_device *cdev) if (id < 0) return; - str = basprintf("console=%s%d,%dn8", cdev->linux_console_name, id, - cdev->baudrate); + str = basprintf("console=%s%d,%dn8", cdev->linux_console_name, id, baudrate); globalvar_add_simple("linux.bootargs.console", str);@@ -297,6 +296,7 @@ int console_register(struct console_device *newcdev) struct device_node *serdev_node = console_is_serdev_node(newcdev); struct device_d *dev = &newcdev->class_dev; int activate = 0, ret; + unsigned baudrate = CONFIG_BAUDRATE;
You initialize baudrate to CONFIG_BAUDRATE here in order to use that as a default, ...
quoted hunk ↗ jump to hunk
if (!serdev_node && initialized == CONSOLE_UNINITIALIZED) console_init_early();@@ -327,11 +327,16 @@ int console_register(struct console_device *newcdev) if (serdev_node) return of_platform_populate(serdev_node, NULL, dev); + if (newcdev->dev && of_device_is_stdout_path(newcdev->dev, &baudrate)) {
...but of_device_is_stdout_path() unconditionally overwrites &baudrate...
-int of_device_is_stdout_path(struct device_d *dev)
+int of_device_is_stdout_path(struct device_d *dev, unsigned int *baudrate)
{
- if (!dev->device_node)
- return 0;
+ unsigned int tmp;
+
+ if (!dev || !dev->device_node || dev->device_node != of_get_stdoutpath(&tmp))
+ return false;
- return dev->device_node == of_get_stdoutpath();
+ *baudrate = tmp;...here. This would break boards which don't have the baudrate given in the devicetree. Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox