On Mon, Jan 17, 2022 at 04:38:38PM +0100, Pali Rohár wrote:
'pci regions' currently prints only region information from bus 0 which belongs to controller 0. Parser for 'pci regions' cmdline currently ignores any additional arguments and so U-Boot always uses bus 0.
Regions are stored in controller (not on the bus) and therefore to retrieve controller from the bus, it is needed to call pci_get_controller() which returns root bus. Because bus 0 is root bus, current code worked fine for controller 0.
Extend cmdline parser for 'pci regions' to allows specifying bus number, extend pci_show_regions() code to accept also non-zero bus number and print bus ranges for which is regions configuration assigned.
Signed-off-by: Pali Rohár pali@kernel.org Reviewed-by: Stefan Roese sr@denx.de
Applied to u-boot/master, thanks!