linux.git/drivers/bus/ti-sysc.c, branch v5.5

bus: ti-sysc: Fix iterating over clocks

2019-12-16T22:55:22+00:00

Commit d878970f6ce1 ("bus: ti-sysc: Add separate functions for handling
clocks") separated handling of optional clocks from the main clocks, but
introduced an issue where we do not necessarily allocate a slot for both
fck and ick clocks, but still assume fixed slots for enumerating over the
clocks.

Let's fix the issue by ensuring we always have slots for both fck and ick
even if we don't use ick, and don't attempt to enumerate optional clocks
if not allocated.

In the long run we might want to simplify things a bit by only allocating
space only for the optional clocks as we have only few devices with
optional clocks.

Fixes: d878970f6ce1 ("bus: ti-sysc: Add separate functions for handling clocks")
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix missing reset delay handling

2019-12-12T16:20:10+00:00

We have dts property for "ti,sysc-delay-us", and we're using it, but the
wait after OCP softreset only happens if devices are probed in legacy mode.

Let's add a delay after writing the OCP softreset when specified.

Fixes: e0db94fe87da ("bus: ti-sysc: Make OCP reset work for sysstatus and sysconfig reset bits")
Cc: Keerthy 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix missing force mstandby quirk handling

2019-12-10T15:18:21+00:00

Commit 03856e928b0e ("bus: ti-sysc: Handle mstandby quirk and use it for
musb") added quirk handling for mstandby quirk but did not consider that
we also need a quirk variant for SYSC_QUIRK_FORCE_MSTANDBY.

We need to use forced idle mode for both SYSC_QUIRK_SWSUP_MSTANDBY and
SYSC_QUIRK_FORCE_MSTANDBY, but SYSC_QUIRK_SWSUP_MSTANDBY also need to
additionally also configure no-idle mode when enabled.

Fixes: 03856e928b0e ("bus: ti-sysc: Handle mstandby quirk and use it for musb")
Signed-off-by: Tony Lindgren

bus: ti-sysc: Adjust exception handling in sysc_child_add_named_clock()

2019-11-14T17:07:03+00:00

Add a jump target so that a call of the function “clk_put”
can be better reused at the end of this function.

Signed-off-by: Markus Elfring 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Add module enable quirk for audio AESS

2019-11-14T16:25:28+00:00

We must set the autogating bit on enable for AESS (Audio Engine SubSystem)
when probed with ti-sysc interconnect target module driver. Otherwise it
won't idle properly.

Cc: Peter Ujfalusi 
Tested-by: Peter Ujfalusi 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Use swsup quirks also for am335x musb

2019-10-21T21:15:55+00:00

Also on am335x we need the swsup quirks for musb.

Signed-off-by: Tony Lindgren

bus: ti-sysc: Handle mstandby quirk and use it for musb

2019-10-21T20:36:09+00:00

We need swsup quirks for sidle and mstandby for musb to work
properly.

Signed-off-by: Tony Lindgren

Merge branch 'watchdog-fix' into omap-for-v5.5/ti-sysc

2019-10-18T15:53:28+00:00

bus: ti-sysc: Fix watchdog quirk handling

2019-10-18T15:45:32+00:00

I noticed that when probed with ti-sysc, watchdog can trigger on am3, am4
and dra7 causing a device reset.

Turns out I made several mistakes implementing the watchdog quirk handling:

1. We must do both writes to spr register

2. We must also call the reset quirk on disable

3. On am3 and am4 we need to also set swsup quirk flag

I probably only tested this earlier with watchdog service running when the
watchdog never gets disabled.

Fixes: 4e23be473e30 ("bus: ti-sysc: Add support for module specific reset quirks")
Signed-off-by: Tony Lindgren

bus: ti-sysc: avoid toggling power state of module during probe

2019-10-08T14:08:59+00:00

Current implementation for ti-sysc powers down the module once module
init is complete. However, right after power is disabled, it is enabled
via runtime PM. This is unnecessary so avoid it by re-ordering the
events a bit; move powering down of the module post runtime PM enable
which makes sure the use counts are maintained properly and there is
no extra power down/up sequence for the module.

Signed-off-by: Tero Kristo 
Signed-off-by: Tony Lindgren