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Subject[PATCH v3 3/3] of: support passing console options with stdout-path
Date
Support specifying console options (like with console=ttyXN,<options>)
by appending them to the stdout-path property after a separating ':'.

Example:
stdout-path = "uart0:115200";

Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
---
drivers/of/base.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 7f0e5f7..6d2d45e 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -37,6 +37,7 @@ EXPORT_SYMBOL(of_allnodes);
struct device_node *of_chosen;
struct device_node *of_aliases;
struct device_node *of_stdout;
+static const char *of_stdout_options;

struct kset *of_kset;

@@ -1844,7 +1845,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
if (IS_ENABLED(CONFIG_PPC) && !name)
name = of_get_property(of_aliases, "stdout", NULL);
if (name)
- of_stdout = of_find_node_by_path(name);
+ of_stdout = of_find_node_opts_by_path(name, &of_stdout_options);
}

if (!of_aliases)
@@ -1968,9 +1969,13 @@ EXPORT_SYMBOL_GPL(of_prop_next_string);
*/
bool of_console_check(struct device_node *dn, char *name, int index)
{
+ char *console_options;
+
if (!dn || dn != of_stdout || console_set_on_cmdline)
return false;
- return !add_preferred_console(name, index, NULL);
+
+ console_options = kstrdup(of_stdout_options, GFP_KERNEL);
+ return !add_preferred_console(name, index, console_options);
}
EXPORT_SYMBOL_GPL(of_console_check);

--
1.7.10.4


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