linux-stable.git/drivers/bus, branch v5.8.2

bus: ti-sysc: Add missing quirk flags for usb_host_hs

2020-08-19T06:26:16+00:00

[ Upstream commit 4254632dba27271f6de66efd87e444ee405dee29 ]

Similar to what we have for the legacy platform data, we need to
configure SWSUP_SIDLE and SWSUP_MSTANDBY quirks for usb_host_hs.

These are needed to drop the legacy platform data for usb_host_hs.

Signed-off-by: Tony Lindgren 
Signed-off-by: Sasha Levin

Merge tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into master

2020-07-25T20:27:12+00:00

Pull timer fix from Ingo Molnar:
 "Fix a suspend/resume regression (crash) on TI AM3/AM4 SoC's"

* tag 'timers-urgent-2020-07-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4

clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4

2020-07-21T13:48:33+00:00

Carlos Hernandez  reported that we now have a suspend and
resume regresssion on am3 and am4 compared to the earlier kernels. While
suspend and resume works with v5.8-rc3, we now get errors with rtcwake:

pm33xx pm33xx: PM: Could not transition all powerdomains to target state
...
rtcwake: write error

This is because we now fail to idle the system timer clocks that the
idle code checks and the error gets propagated to the rtcwake.

Turns out there are several issues that need to be fixed:

1. Ignore no-idle and no-reset configured timers for the ti-sysc
   interconnect target driver as otherwise it will keep the system timer
   clocks enabled

2. Toggle the system timer functional clock for suspend for am3 and am4
   (but not for clocksource on am3)

3. Only reconfigure type1 timers in dmtimer_systimer_disable()

4. Use of_machine_is_compatible() instead of of_device_is_compatible()
   for checking the SoC type

Fixes: 52762fbd1c47 ("clocksource/drivers/timer-ti-dm: Add clockevent and clocksource support")
Reported-by: Carlos Hernandez 
Signed-off-by: Tony Lindgren 
Tested-by: Carlos Hernandez 
Signed-off-by: Daniel Lezcano 
Link: https://lore.kernel.org/r/20200713162601.6829-1-tony@atomide.com

bus: ti-sysc: Do not disable on suspend for no-idle

2020-07-02T20:57:57+00:00

If we have "ti,no-idle" specified for a module we must not disable
the the module on suspend to keep things backwards compatible.

Fixes: 386cb76681ca ("bus: ti-sysc: Handle missed no-idle property in addition to no-idle-on-init")
Reported-by: Grygorii Strashko 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix sleeping function called from invalid context for RTC quirk

2020-07-02T17:47:43+00:00

With CONFIG_DEBUG_ATOMIC_SLEEP enabled we can see the following with RTC probe:

BUG: sleeping function called from invalid context at drivers/bus/ti-sysc.c:1736
...
(sysc_quirk_rtc) from [] (sysc_write_sysconfig+0x1c/0x60)
(sysc_write_sysconfig) from [] (sysc_enable_module+0x11c/0x274)
(sysc_enable_module) from [] (sysc_probe+0xe9c/0x1380)
(sysc_probe) from [] (platform_drv_probe+0x48/0x98)

Fixes: e8639e1c986a ("bus: ti-sysc: Handle module unlock quirk needed for some RTC")
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix wakeirq sleeping function called from invalid context

2020-07-02T17:22:41+00:00

With CONFIG_DEBUG_ATOMIC_SLEEP enabled we can see the following with
wakeirqs and serial console idled:

BUG: sleeping function called from invalid context at drivers/bus/ti-sysc.c:242
...
(sysc_wait_softreset) from [] (sysc_enable_module+0x48/0x274)
(sysc_enable_module) from [] (sysc_runtime_resume+0x19c/0x1d8)
(sysc_runtime_resume) from [] (sysc_child_runtime_resume+0x58/0x84)
(sysc_child_runtime_resume) from [] (__rpm_callback+0x30/0x12c)
(__rpm_callback) from [] (rpm_callback+0x20/0x80)
(rpm_callback) from [] (rpm_resume+0x638/0x7fc)
(rpm_resume) from [] (__pm_runtime_resume+0x60/0x9c)
(__pm_runtime_resume) from [] (handle_threaded_wake_irq+0x24/0x60)
(handle_threaded_wake_irq) from [] (irq_thread_fn+0x1c/0x78)
(irq_thread_fn) from [] (irq_thread+0x140/0x26c)

We have __pm_runtime_resume() call the sysc_runtime_resume() with spinlock
held and interrupts disabled.

Fixes: d46f9fbec719 ("bus: ti-sysc: Use optional clocks on for enable and wait for softreset bit")
Signed-off-by: Tony Lindgren

Merge tag 'omap-for-v5.8/fixes-merge-window-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes

2020-06-28T12:41:55+00:00

Fixes for omaps for v5.8

The recent display subsystem (DSS) related platform data changes caused
display related regressions for suspend and resume. Looks like I only
tested suspend and resume before dropping the legacy platform data, and
forgot to test it after dropping it. Turns out the main issue was that
we no longer have platform code calling pm_runtime_suspend for DSS like
we did for the legacy platform data case, and that fix is still being
discussed on the dri-devel list and will get merged separately. The DSS
related testing exposed a pile other other display related issues that
also need fixing though:

- Fix ti-sysc optional clock handling and reset status checks
  for devices that reset automatically in idle like DSS

- Ignore ti-sysc clockactivity bit unless separately requested
  to avoid unexpected performance issues

- Init ti-sysc framedonetv_irq to true and disable for am4

- Avoid duplicate DSS reset for legacy mode with dts data

- Remove LCD timings for am4 as they cause warnings now that we're
  using generic panels

Then there is a pile of other fixes not related to the DSS:

- Fix omap_prm reset deassert as we still have drivers setting the
  pm_runtime_irq_safe() flag

- Flush posted write for ti-sysc enable and disable

- Fix droid4 spi related errors with spi flags

- Fix am335x USB range and a typo for softreset

- Fix dra7 timer nodes for clocks for IPU and DSP

- Drop duplicate mailboxes after mismerge for dra7

* tag 'omap-for-v5.8/fixes-merge-window-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  Revert "bus: ti-sysc: Increase max softreset wait"
  ARM: dts: am437x-epos-evm: remove lcd timings
  ARM: dts: am437x-gp-evm: remove lcd timings
  ARM: dts: am437x-sk-evm: remove lcd timings
  ARM: dts: dra7-evm-common: Fix duplicate mailbox nodes
  ARM: dts: dra7: Fix timer nodes properly for timer_sys_ck clocks
  ARM: dts: Fix am33xx.dtsi ti,sysc-mask wrong softreset flag
  ARM: dts: Fix am33xx.dtsi USB ranges length
  bus: ti-sysc: Increase max softreset wait
  ARM: OMAP2+: Fix legacy mode dss_reset
  bus: ti-sysc: Fix uninitialized framedonetv_irq
  bus: ti-sysc: Ignore clockactivity unless specified as a quirk
  bus: ti-sysc: Use optional clocks on for enable and wait for softreset bit
  ARM: dts: omap4-droid4: Fix spi configuration and increase rate
  bus: ti-sysc: Flush posted write on enable and disable
  soc: ti: omap-prm: use atomic iopoll instead of sleeping one

Link: https://lore.kernel.org/r/pull-1591889257-410830@atomide.com
Signed-off-by: Arnd Bergmann

Merge tag 'v5.8-rc1' into fixes

2020-06-16T16:25:03+00:00

Linux 5.8-rc1

Revert "bus: ti-sysc: Increase max softreset wait"

2020-06-10T22:31:54+00:00

This reverts commit 636338d7968e47c7f2e0b772a2a825ad932883fb.

This patch is not a proper fixes the i2c2 timeouts are still
happening in some cases.

Signed-off-by: Tony Lindgren

Merge branch 'fixes-v5.7' into fixes

2020-06-08T17:14:49+00:00