Tomi Valkeinen c079e2e113 drm/tidss: Fix sync-lost issue with two displays ... A sync lost issue can be observed with two displays, when moving a plane from one disabled display to an another disabled display, and then enabling the display to which the plane was moved to. The exact requirements for this to trigger are not clear. It looks like the issue is that the layers are left enabled in the first display's OVR registers. Even if the corresponding VP is disabled, it still causes an issue, as if the disabled VP and its OVR would still be in use, leading to the same VID being used by two OVRs. However, this is just speculation based on testing the DSS behavior. Experimentation shows that as a workaround, we can disable all the layers in the OVR when disabling a VP. There should be no downside to this, as the OVR is anyway effectively disabled if its VP is disabled, and it seems to solve the sync lost issue. However, there may be a bigger issue in play here, related to J721e erratum i2097 ("DSS: Disabling a Layer Connected to Overlay May Result in Synclost During the Next Frame"). Experimentation also shows that the OVR's CHANNELIN field has similar issue. So we may need to revisit this when we find out more about the core issue. Fixes: 32a1795f57 ("drm/tidss: New driver for TI Keystone platform Display SubSystem") Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240213-tidss-fixes-v1-2-d709e8dfa505@ideasonboard.com		2024-02-26 10:09:43 +02:00
..
accel	accel/qaic: Constify aic100_channels	2024-02-23 09:06:50 -07:00
accessibility
acpi	cxl for v6.8	2024-01-18 16:22:43 -08:00
amba
android	binder: signal epoll threads of self-work	2024-01-31 14:08:28 -08:00
ata	ahci: Extend ASM1061 43-bit DMA address quirk to other ASM106x parts	2024-01-31 12:09:34 +01:00
atm	net: fill in MODULE_DESCRIPTION()s for ATM	2024-01-05 08:04:23 -08:00
auxdisplay	drm-next for 6.8:	2024-01-12 11:32:19 -08:00
base	RTC for 6.8	2024-01-18 17:25:39 -08:00
bcma
block	block-6.8-2024-01-26	2024-01-26 15:19:43 -08:00
bluetooth	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
bus	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
cache
cdrom
cdx	cdx: Unlock on error path in rescan_store()	2024-01-04 17:01:14 +01:00
char	char/agp: remove agp_bridge_data::type	2024-02-16 18:07:13 +01:00
clk	clk: qcom: gcc-x1e80100: Replace of_device.h with explicit includes	2024-01-19 08:17:28 -06:00
clocksource	clocksource/drivers/ep93xx: Fix error handling during probe	2023-12-27 15:37:11 +01:00
comedi
connector	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2024-01-04 18:06:46 -08:00
counter
cpufreq	cpufreq/amd-pstate: Fix setting scaling max/min freq values	2024-01-22 20:35:58 +01:00
cpuidle	cpuidle: haltpoll: Do not enable interrupts when entering idle	2023-12-29 18:08:18 +01:00
crypto	crypto: caam - fix asynchronous hash	2024-01-26 16:35:55 +08:00
cxl	cxl/region：Fix overflow issue in alloc_hpa()	2024-01-24 21:03:03 -08:00
dax	New code for 6.8:	2024-01-10 08:45:22 -08:00
dca
devfreq
dio
dma	dmaengine: at_hdmac: add missing kernel-doc style description	2024-02-02 17:16:55 +01:00
dma-buf	Merge drm/drm-next into drm-misc-next	2024-02-07 13:02:20 +01:00
dpll	dpll: fix register pin with unregistered parent pin	2024-01-22 11:01:11 +00:00
edac	Driver core changes for 6.8-rc1	2024-01-18 09:48:40 -08:00
eisa
extcon
firewire	firewire: core: search descriptor leaf just after vendor directory entry in root directory	2024-02-01 20:53:18 +09:00
firmware	firmware/sysfb: Update screen_info for relocated EFI framebuffers	2024-02-14 10:09:21 +01:00
fpga	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
fsi
gnss	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
gpio	gpio: eic-sprd: Clear interrupt after set the interrupt type	2024-01-22 11:38:08 +01:00
gpu	drm/tidss: Fix sync-lost issue with two displays	2024-02-26 10:09:43 +02:00
greybus	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
hid	HID: bpf: use __bpf_kfunc instead of noinline	2024-01-31 10:27:08 +01:00
hsi
hte
hv
hwmon	hwmon: (pmbus/mp2975) Correct comment inside 'mp2975_read_byte_data'	2024-01-27 08:03:18 -08:00
hwspinlock
hwtracing
i2c	This cycle, I2C removes the currently unused CLASS_DDC support	2024-01-18 17:29:01 -08:00
i3c	i3c: master: cdns: Update maximum prescaler value for i2c clock	2024-01-08 00:51:36 +01:00
idle	Power management updates for 6.8-rc1	2024-01-09 16:32:11 -08:00
iio	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
infiniband	RDMA v6.8 merge window	2024-01-12 13:52:21 -08:00
input	Input updates for v6.8-rc2	2024-02-02 12:52:44 -08:00
interconnect	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
iommu	iommu: Allow ops->default_domain to work when !CONFIG_IOMMU_DMA	2024-02-01 13:16:17 +01:00
ipack	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
irqchip	header cleanups for 6.8	2024-01-10 16:43:55 -08:00
isdn
leds	- New Drivers	2024-01-17 15:25:27 -08:00
macintosh
mailbox	mediatek: add CMDQ support for mt8188	2024-01-17 15:39:32 -08:00
mcb
md	dm-crypt, dm-verity: disable tasklets	2024-02-02 12:33:50 -05:00
media	Merge drm/drm-next into drm-misc-next	2024-02-07 13:02:20 +01:00
memory	IOMMU Updates for Linux v6.8	2024-01-18 15:16:57 -08:00
memstick
message
mfd	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
misc	misc: open-dice: Fix spurious lockdep warning	2024-01-30 16:20:54 -08:00
mmc	TTY/Serial changes for 6.8-rc1	2024-01-18 11:37:24 -08:00
most
mtd	This pull request contains updates for UBI and UBIFS:	2024-01-17 10:27:13 -08:00
mux	mux: mmio: use reg property when parent device is not a syscon	2024-01-04 17:01:14 +01:00
net	idpf: avoid compiler padding in virtchnl2_ptype struct	2024-02-01 09:10:41 -08:00
nfc
ntb
nubus	nubus: Make nubus_bus_type static and constant	2024-01-03 13:33:59 +01:00
nvdimm	virtio: features, fixes	2024-01-18 16:44:03 -08:00
nvme	nvme: allow passthru cmd error logging	2024-02-01 07:44:53 -08:00
nvmem	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
of	IOMMU Updates for Linux v6.8	2024-01-18 15:16:57 -08:00
opp	OPP: Rename 'rate_clk_single'	2024-01-05 15:55:41 +05:30
parisc	parisc/power: Fix power soft-off button emulation on qemu	2024-01-07 22:59:16 +01:00
parport
pci	PCI/ASPM: Fix deadlock when enabling ASPM	2024-01-31 09:03:51 -06:00
pcmcia
peci
perf	ACPI updates for 6.8-rc1	2024-01-09 16:12:44 -08:00
phy	phy: ti: phy-omap-usb2: Fix NULL pointer dereference for SRP	2024-01-30 22:41:11 +05:30
pinctrl	This is the main pin control pull request for the v6.8 kernel series.	2024-01-17 15:55:33 -08:00
platform	platform/x86: touchscreen_dmi: Add info for the TECLAST X16 Plus tablet	2024-01-26 20:21:47 +01:00
pmdomain	Driver core changes for 6.8-rc1	2024-01-18 09:48:40 -08:00
pnp	More ACPI updates for 6.8-rc1	2024-01-17 14:37:40 -08:00
power	Revert "power: supply: qcom_battmgr: Register the power supplies after PDR is up"	2024-01-26 22:45:58 +01:00
powercap
pps
ps3
ptp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2024-01-04 18:06:46 -08:00
pwm	pwm: jz4740: Don't use dev_err_probe() in .request()	2024-01-12 18:25:05 +01:00
rapidio
ras
regulator	regulator (max5970): Fix IRQ handler	2024-01-30 15:27:16 +00:00
remoteproc
reset	SoC: driver updates for 6.8	2024-01-11 11:31:46 -08:00
rpmsg
rtc	rtc: nuvoton: Compatible with NCT3015Y-R and NCT3018Y-R	2024-01-18 01:05:33 +01:00
s390	s390 updates for 6.8 merge window part 2	2024-01-18 14:11:25 -08:00
sbus
scsi	scsi: storvsc: Fix ring buffer size calculation	2024-01-23 21:27:28 -05:00
sh	maple: make maple_bus_type static and const	2024-01-04 14:37:17 +01:00
siox
slimbus
soc	soc: apple: mailbox: error pointers are negative integers	2024-01-30 11:34:49 -08:00
soundwire	soundwire updates for 6.7	2024-01-18 17:08:31 -08:00
spi	spi: sh-msiof: avoid integer overflow in constants	2024-01-30 15:27:21 +00:00
spmi
ssb
staging	Merge drm/drm-next into drm-misc-next	2024-01-29 14:20:23 +01:00
target	SCSI misc on 20240120	2024-01-20 09:42:32 -08:00
tc
tee	Another moderately busy cycle for documentation, including:	2024-01-11 19:46:52 -08:00
thermal	thermal: intel: powerclamp: Remove dead code for target mwait value	2024-01-22 11:59:22 +01:00
thunderbolt	USB / Thunderbolt changes for 6.8-rc1	2024-01-18 11:43:55 -08:00
tty	serial: max310x: prevent infinite while() loop in port startup	2024-01-27 19:09:10 -08:00
ufs	SCSI misc on 20240120	2024-01-20 09:42:32 -08:00
uio	uio: Fix use-after-free in uio_open	2024-01-04 17:03:47 +01:00
usb	USB-serial device ids for 6.8-rc3	2024-02-02 08:36:38 -08:00
vdpa	virtio: features, fixes	2024-01-18 16:44:03 -08:00
vfio	VFIO updates for v6.8-rc1	2024-01-18 15:57:25 -08:00
vhost	virtio: features, fixes	2024-01-18 16:44:03 -08:00
video	fbdev/efifb: Remove framebuffer relocation tracking	2024-02-14 10:09:21 +01:00
virt	Char/Misc and other Driver changes for 6.8-rc1	2024-01-17 16:47:17 -08:00
virtio	virtio: features, fixes	2024-01-18 16:44:03 -08:00
w1
watchdog	linux-watchdog 6.8-rc1 tag	2024-01-12 13:32:30 -08:00
xen	xen: branch for v6.8-rc1	2024-01-17 13:41:38 -08:00
zorro
Kconfig
Makefile	fbdev/intelfb: Remove driver	2024-01-12 12:38:37 +01:00