Hi, Am Dienstag, 21. Juni 2022, 09:28:43 CEST schrieb Tony Lindgren: > Hi, > > * Saravana Kannan <sarava...@google.com> [700101 02:00]: > > Now that fw_devlink=on by default and fw_devlink supports > > "power-domains" property, the execution will never get to the point > > where driver_deferred_probe_check_state() is called before the supplier > > has probed successfully or before deferred probe timeout has expired. > > > > So, delete the call and replace it with -ENODEV. > > Looks like this causes omaps to not boot in Linux next. With this > simple-pm-bus fails to probe initially as the power-domain is not > yet available. On platform_probe() genpd_get_from_provider() returns > -ENOENT. > > Seems like other stuff is potentially broken too, any ideas on > how to fix this?
I think I'm hit by this as well, although I do not get a lockup. In my case I'm using arch/arm64/boot/dts/freescale/imx8mq-tqma8mq-mba8mx.dts and probing of 38320000.blk-ctrl fails as the power-domain is not (yet) registed. See the (filtered) dmesg output: > [ 0.744245] PM: Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@0 [ 0.744756] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@2 [ 0.745012] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@3 [ 0.745268] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@4 [ 0.746121] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@7 [ 0.746400] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@8 [ 0.746665] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@9 [ 0.746927] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@a [ 0.748870] > imx8m-blk-ctrl 38320000.blk-ctrl: error -ENODEV: failed to attach bus power > domain [ 1.265279] PM: Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@5 [ 1.265861] PM: > Added domain provider from > /soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@6 blk-ctrl@38320000 requires the power-domain 'pgc_vpu', which is power-domain@6 in pgc. Best regards, Alexander > > Signed-off-by: Saravana Kannan <sarava...@google.com> > > --- > > > > drivers/base/power/domain.c | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c > > index 739e52cd4aba..3e86772d5fac 100644 > > --- a/drivers/base/power/domain.c > > +++ b/drivers/base/power/domain.c > > @@ -2730,7 +2730,7 @@ static int __genpd_dev_pm_attach(struct device *dev, > > struct device *base_dev,> > > mutex_unlock(&gpd_list_lock); > > dev_dbg(dev, "%s() failed to find PM domain: %ld\n", > > > > __func__, PTR_ERR(pd)); > > > > - return driver_deferred_probe_check_state(base_dev); > > + return -ENODEV; > > > > } > > > > dev_dbg(dev, "adding to PM domain %s\n", pd->name); _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
