[PATCH 1/2] dm: core: Add late driver remove option
Simon Glass
sjg at chromium.org
Mon Oct 12 05:35:32 CEST 2020
Hi Marek,
On Sun, 11 Oct 2020 at 10:03, Marek Vasut <marek.vasut at gmail.com> wrote:
>
> 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 at gmail.com>
> Cc: Simon Glass <sjg at chromium.org>
> Cc: Tom Rini <trini at konsulko.com>
> ---
> arch/arm/lib/bootm.c | 1 +
> board/Marvell/octeontx2/board.c | 4 ++--
> drivers/core/device-remove.c | 11 ++++++++---
> drivers/core/root.c | 2 ++
> drivers/core/uclass.c | 32 +++++++++++++++++++++++++-------
> include/dm/device.h | 4 ++++
> include/dm/uclass-internal.h | 3 ++-
> test/dm/core.c | 21 ++++++++++++---------
> test/dm/test-main.c | 30 +++++++++++++++++-------------
> 9 files changed, 73 insertions(+), 35 deletions(-)
I remember seeing a similar patch before. Do you have a change log?
Regards,
Simon
More information about the U-Boot
mailing list