The R-Car System Controller (SYSC) driver registers PM domains from an
early_initcall(). It does not use a platform driver, as secondary CPU
startup on R-Car H1 needs to control the CPU power domains, before
initialization of the driver framework.
As fw_devlink only considers devices, it does not know that the System
Controller is ready. Hence probing of on-chip devices that are part of
the SYSC PM domain fails if fw_devlink is enabled:
probe deferral - supplier e6180000.system-controller not ready
Fix this by setting the OF_POPULATED flag for the SYSC device node after
successful initialization. This will make of_link_to_phandle() ignore
the SYSC device node as a dependency, and consumer devices will be
probed again.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Saravana Kannan <saravanak@xxxxxxxxxx>
---
As this seems to be harmless if commit e590474768f1cc04 ("driver core:
Set fw_devlink=on by default") won't make v5.12, I plan to queue this in
renesas-devel for v5.12.
v2:
- Add Reviewed-by,
- s/platform devices/devices/,
- Drop Fixes tag,
- Drop RFC.
---
drivers/soc/renesas/rcar-sysc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index d51ddc7d5232b9db..53387a72ca00ce79 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -434,6 +434,8 @@ static int __init rcar_sysc_pd_init(void)
}
error = of_genpd_add_provider_onecell(np, &domains->onecell_data);
+ if (!error)
+ of_node_set_flag(np, OF_POPULATED);
out_put:
of_node_put(np);
--
2.25.1
