diff options
Diffstat (limited to 'configs/platform-v7a/patches/barebox-2021.02.0/of-base-probe-simple-pm-bus-children-as-well.patch')
-rw-r--r-- | configs/platform-v7a/patches/barebox-2021.02.0/of-base-probe-simple-pm-bus-children-as-well.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/configs/platform-v7a/patches/barebox-2021.02.0/of-base-probe-simple-pm-bus-children-as-well.patch b/configs/platform-v7a/patches/barebox-2021.02.0/of-base-probe-simple-pm-bus-children-as-well.patch new file mode 100644 index 0000000..7873666 --- /dev/null +++ b/configs/platform-v7a/patches/barebox-2021.02.0/of-base-probe-simple-pm-bus-children-as-well.patch @@ -0,0 +1,40 @@ +From: Ahmad Fatoum <a.fatoum@pengutronix.de> +Date: Fri, 12 Mar 2021 08:27:46 +0100 +Subject: [PATCH] of: base: probe simple-pm-bus children as well + +Upstream is migrating device trees like those of the am33xx to use +simple-pm-bus, where applicable. These are buses that reference a clock +or a power domain that needs to be enabled in order to use devices on it. + +As we didn't yet support this binding, this broke the Beaglebone +and all other am33xx board since v2021.02.0. + +Fix this by adding simple-pm-bus to the of_default_bus_match_table. +Note that this is only an adequate solution for when the power domain +and clocks referenced are already enabled prior to barebox startup. + +For all other cases, driver support must be available for the clock +and power domains in questions and this driver must be extended to +make use of them. For the am33xx, the relevant buses are powered +and clocked on boot up, so we leave general support to another day.. + +Fixes: 6ea3de1b8ce7 ("dts: update to v5.11-rc1") +Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> +Link: https://lore.pengutronix.de/20210312082218.17058-1-a.fatoum@pengutronix.de +--- + drivers/of/base.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/of/base.c b/drivers/of/base.c +index 8759099d7480..6fe02649ee53 100644 +--- a/drivers/of/base.c ++++ b/drivers/of/base.c +@@ -2272,6 +2272,8 @@ const char *of_get_model(void) + const struct of_device_id of_default_bus_match_table[] = { + { + .compatible = "simple-bus", ++ }, { ++ .compatible = "simple-pm-bus", + }, { + .compatible = "simple-mfd", + }, { |