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2f22702dc0fee06a240404e0f7ead5b789b253d8
linux/drivers
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Luca Ceresoli 2f22702dc0 drm/bridge: ti-sn65dsi83: fix CHA_DSI_CLK_RANGE rounding 
The DSI frequency must be in the range:

  (CHA_DSI_CLK_RANGE * 5 MHz) <= DSI freq < ((CHA_DSI_CLK_RANGE + 1) * 5 MHz)

So the register value should point to the lower range value, but
DIV_ROUND_UP() rounds the division to the higher range value, resulting in
an excess of 1 (unless the frequency is an exact multiple of 5 MHz).

For example for a 437100000 MHz clock CHA_DSI_CLK_RANGE should be 87 (0x57):

  (87 * 5 = 435) <= 437.1 < (88 * 5 = 440)

but current code returns 88 (0x58).

Fix the computation by removing the DIV_ROUND_UP().

Fixes: ceb515ba29 ("drm/bridge: ti-sn65dsi83: Add TI SN65DSI83 and SN65DSI84 driver")
Cc: stable@vger.kernel.org
Reviewed-by: Marek Vasut <marek.vasut@mailbox.org>
Link: https://patch.msgid.link/20260226-ti-sn65dsi83-dual-lvds-fixes-and-test-pattern-v1-1-2e15f5a9a6a0@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-03-09 22:32:05 +01:00
..
accel
accel: ethosu: Handle possible underflow in IFM size calculations
2026-03-05 15:21:17 -06:00
accessibility
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
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acpi
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amba
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android
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ata
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2026-02-21 20:03:00 -08:00
atm
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2026-02-22 08:26:33 -08:00
auxdisplay
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base
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bcma
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block
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bluetooth
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bus
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cache
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cdrom
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cdx
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char
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clk
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clocksource
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comedi
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connector
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counter
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cpufreq
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cpuidle
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crypto
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cxl
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2026-02-21 17:09:51 -08:00
dax
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2026-02-21 17:09:51 -08:00
dca
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
devfreq
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2026-02-21 20:03:00 -08:00
dibs
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dio
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dma
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2026-02-21 20:03:00 -08:00
dma-buf
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2026-02-21 20:03:00 -08:00
dpll
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edac
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eisa
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2026-02-21 17:09:51 -08:00
extcon
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firewire
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firmware
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fpga
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fsi
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2026-02-21 17:09:51 -08:00
fwctl
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2026-02-21 17:09:51 -08:00
gnss
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gpib
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2026-02-21 20:03:00 -08:00
gpio
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2026-02-21 20:03:00 -08:00
gpu
drm/bridge: ti-sn65dsi83: fix CHA_DSI_CLK_RANGE rounding
2026-03-09 22:32:05 +01:00
greybus
Convert more 'alloc_obj' cases to default GFP_KERNEL arguments
2026-02-21 20:03:00 -08:00
hid
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2026-02-22 08:26:33 -08:00
hsi
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hte
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hv
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2026-02-22 08:26:33 -08:00
hwmon
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2026-02-22 08:26:33 -08:00
hwspinlock
Merge tag 'soc-drivers-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
2026-02-10 20:45:30 -08:00
hwtracing
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i2c
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i3c
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idle
…
iio
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infiniband
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input
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interconnect
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iommu
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ipack
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irqchip
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isdn
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leds
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macintosh
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2026-02-21 20:03:00 -08:00
mailbox
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
2026-02-21 01:02:28 -08:00
mcb
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2026-02-21 17:09:51 -08:00
md
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media
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memory
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memstick
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message
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mfd
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misc
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mmc
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most
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mtd
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mux
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net
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nfc
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ntb
Merge tag 'kmalloc_obj-treewide-v7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2026-02-21 11:02:58 -08:00
nubus
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nvdimm
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nvme
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nvmem
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of
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opp
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parisc
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parport
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pci
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pcmcia
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peci
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perf
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2026-02-21 20:03:00 -08:00
phy
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pinctrl
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platform
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pmdomain
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pnp
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power
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powercap
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pps
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ps3
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ptp
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pwm
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rapidio
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ras
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regulator
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remoteproc
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resctrl
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reset
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rpmsg
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rtc
Merge tag 'rtc-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
2026-02-22 09:43:11 -08:00
s390
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sbus
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scsi
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sh
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siox
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slimbus
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soc
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soundwire
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spi
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spmi
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ssb
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staging
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target
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tc
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tee
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thermal
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thunderbolt
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tty
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ufs
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uio
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usb
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vdpa
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vfio
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vhost
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video
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virt
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virtio
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w1
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watchdog
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xen
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zorro
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Kconfig
…
Makefile
phy: enter drivers/phy/Makefile even without CONFIG_GENERIC_PHY
2026-02-04 20:45:26 +05:30