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| author | Marek Vasut <marek.vasut@gmail.com> | 2021-01-25 00:32:46 +0300 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2021-02-03 13:38:41 +0300 |
| commit | cc6f4c8f2574472e359cb915811f6f93efdfcad4 (patch) | |
| tree | 67b550a1af9bd00eb5fed3bc5d257eda641abcae /drivers/core/root.c | |
| parent | c51d2e704a1c89d504b379b133bd552c3387fa6c (diff) | |
| download | u-boot-cc6f4c8f2574472e359cb915811f6f93efdfcad4.tar.xz | |
dm: core: Add late driver remove option
Add another flag to the DM core which could be assigned to drivers and
which makes those drivers call their remove callbacks last, just before
booting OS and after all the other drivers finished with their remove
callbacks. This is necessary for things like clock drivers, where the
other drivers might depend on the clock driver in their remove callbacks.
Prime example is the mmc subsystem, which can reconfigure a card from HS
mode to slower modes in the remove callback and for that it needs to
reconfigure the controller clock.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/core/root.c')
| -rw-r--r-- | drivers/core/root.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/core/root.c b/drivers/core/root.c index 2bfa75b472..7ef2ec2da2 100644 --- a/drivers/core/root.c +++ b/drivers/core/root.c @@ -162,6 +162,8 @@ int dm_init(bool of_live) int dm_uninit(void) { + /* Remove non-vital devices first */ + device_remove(dm_root(), DM_REMOVE_NON_VITAL); device_remove(dm_root(), DM_REMOVE_NORMAL); device_unbind(dm_root()); gd->dm_root = NULL; |