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Florian Fainelli 4823a031f0 This pull request brings in a build fix for arm64 with bcm2835
enabled, and fixes the driver in the presence of -EPROBE_DEFER.
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Merge tag 'tags/bcm2835-drivers-next-2019-03-12' into soc/fixes

This pull request brings in a build fix for arm64 with bcm2835
enabled, and fixes the driver in the presence of -EPROBE_DEFER.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2019-03-18 10:31:24 -07:00
Eric Anholt 4deabfae64 soc: bcm: bcm2835-pm: Fix error paths of initialization.
The clock driver may probe after ours and so we need to pass the
-EPROBE_DEFER out.  Fix the other error path while we're here.

v2: Use dom->name instead of dom->gov as the flag for initialized
    domains, since we aren't setting up a governor.  Make sure to
    clear ->clk when no clk is present in the DT.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 670c672608 ("soc: bcm: bcm2835-pm: Add support for power domains under a new binding.")
2019-03-04 15:33:14 -08:00
Eric Anholt 7f3d6c8e8f soc: bcm: bcm2835-pm: Fix PM_IMAGE_PERI power domain support.
We don't have ASB master/slave regs for this domain, so just skip that
step.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 670c672608 ("soc: bcm: bcm2835-pm: Add support for power domains under a new binding.")
2019-03-04 15:32:34 -08:00
Wei Yongjun 722f761084 soc: bcm: bcm2835-pm: Make local symbol static
Fixes the following sparse warning:

drivers/soc/bcm/bcm2835-power.c:556:32: warning:
 symbol 'bcm2835_reset_ops' was not declared. Should it be static?

Fixes: 670c672608 ("soc: bcm: bcm2835-pm: Add support for power domains under a new binding.")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2019-01-31 21:05:58 -08:00
Eric Anholt 670c672608 soc: bcm: bcm2835-pm: Add support for power domains under a new binding.
This provides a free software alternative to raspberrypi-power.c's
firmware calls to manage power domains.  It also exposes a reset line,
where previously the vc4 driver had to try to force power off the
domain in order to trigger a reset.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
2019-01-09 16:55:09 +01:00