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linux-stable/drivers/bus
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Tony Lindgren c8692ad416 bus: ti-sysc: Fix flakey idling of uarts and stop using swsup_sidle_act 
Looks like the swsup_sidle_act quirk handling is unreliable for serial
ports. The serial ports just eventually stop idling until woken up and
re-idled again. As the serial port not idling blocks any deeper SoC idle
states, it's adds an annoying random flakeyness for power management.

Let's just switch to swsup_sidle quirk instead like we already do for
omap3 uarts. This means we manually idle the port instead of trying to
use the hardware autoidle features when not in use.

For more details on why the serial ports have been using swsup_idle_act,
see commit 66dde54e97 ("ARM: OMAP2+: hwmod-data: UART IP needs software
control to manage sidle modes"). It seems that the swsup_idle_act quirk
handling is not enough though, and for example the TI Android kernel
changed to using swsup_sidle with commit 77c34c84e1e0 ("OMAP4: HWMOD:
UART1: disable smart-idle.").

Fixes: b4a9a7a389 ("bus: ti-sysc: Handle swsup idle mode quirks")
Cc: Carl Philipp Klemm <philipp@uvos.xyz>
Cc: Ivan Jelincic <parazyd@dyne.org>
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Sicelo A. Mhlongo <absicsz@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2021-05-25 09:08:23 +03:00
..
fsl-mc Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
mhi bus: mhi: core: Fix shadow declarations 2021-04-09 10:11:05 +05:30
arm-cci.c
arm-integrator-lm.c bus: arm-integrator-lm: Add of_node_put() before return statement 2021-01-15 17:53:05 +01:00
brcmstb_gisb.c bus: brcmstb_gisb: Add support for breakpoint interrupts 2020-09-06 20:10:44 -07:00
bt1-apb.c bus: bt1-apb: Use sysfs_streq instead of strncmp 2020-05-28 16:56:56 +02:00
bt1-axi.c bus: bt1-axi: Use sysfs_streq instead of strncmp 2020-05-28 16:57:12 +02:00
da8xx-mstpri.c
hisi_lpc.c bus: hisi_lpc: Fixup IO ports addresses to avoid use-after-free in host removal 2020-02-28 17:30:49 +08:00
imx-weim.c
Kconfig c6x: remove architecture 2021-01-20 09:30:45 +01:00
Makefile ARM/SoC: drivers for v5.7 2020-06-04 19:56:20 -07:00
mips_cdmm.c mips: cdmm: fix use-after-free in mips_cdmm_bus_discover 2020-11-27 10:38:02 +01:00
moxtet.c treewide: change my e-mail address, fix my name 2021-04-09 14:54:23 -07:00
mvebu-mbus.c ARM: mvebu: avoid clang -Wtautological-constant warning 2021-04-01 16:32:38 +02:00
omap-ocp2scp.c
omap_l3_noc.c bus: omap_l3_noc: mark l3 irqs as IRQF_NO_THREAD 2021-02-04 09:08:57 +02:00
omap_l3_noc.h
omap_l3_smx.c
omap_l3_smx.h
qcom-ebi2.c bus: qcom: Put child node before return 2021-03-29 22:01:27 -05:00
simple-pm-bus.c drivers: bus: simple-pm-bus: Fix compatibility with simple-bus for auxdata 2021-01-15 12:50:49 +02:00
sun50i-de2.c
sunxi-rsb.c Merge remote-tracking branch 'mfd/ib-mfd-bus-5.12' into sunxi/drivers-for-5.12 2021-01-18 11:01:07 +08:00
tegra-aconnect.c
tegra-gmi.c
ti-pwmss.c bus/ti-pwmss: move TI PWMSS driver from PWM to bus subsystem 2019-10-17 21:17:42 +01:00
ti-sysc.c bus: ti-sysc: Fix flakey idling of uarts and stop using swsup_sidle_act 2021-05-25 09:08:23 +03:00
ts-nbus.c
uniphier-system-bus.c
vexpress-config.c bus: vexpress-config: Support building as module 2020-05-13 12:42:46 -05:00