On Wed, 3 Jun 2026 at 03:55, Richard Genoud (TI) <[email protected]> wrote: > > For J7200, J784s4, J721e, j722s, j721s2 SoCs, the everything is shutdown > at suspend but the PMIC and the DDR. > In order for U-Boot SPL to know that it is resuming from suspend and not > booting, a flag is set in a PMIC register. > So, at startup, U-Boot will read the PMIC register and deduce if the > board is resuming from suspend or not. > > This state (resuming or not) is consulted at several places (in > board_init_f() and in k3_ddrss_probe(). > As it takes some time to read a i2c register, it's best to cache the > information. > But, as stated by the README, in board_init_f(), the BSS is not > available, so we cannot use global/static variables, only stack > variables and global_data. > > Thus, we use gd to store the resume state of the board. > > Signed-off-by: Richard Genoud (TI) <[email protected]> > --- > arch/arm/include/asm/global_data.h | 19 +++++++++++++++++++ > 1 file changed, 19 insertions(+)
Reviewed-by: Simon Glass <[email protected]>
