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Stefan Wahren 730bbfaf7d spi: spi-fsl-lpspi: Fix scldiv calculation 
The effective SPI clock frequency should never exceed speed_hz
otherwise this might result in undefined behavior of the SPI device.

Currently the scldiv calculation could violate this constraint.
For the example parameters perclk_rate = 24 MHz and speed_hz = 7 MHz,
the function fsl_lpspi_set_bitrate will determine perscale = 0 and
scldiv = 1, which is a effective SPI clock of 8 MHz.

So fix this by rounding up the quotient of perclk_rate and speed_hz.
While this never change within the loop, we can pull this out.

Fixes: 5314987de5 ("spi: imx: add lpspi bus driver")
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://patch.msgid.link/20240804113611.83613-1-wahrenst@gmx.net
Signed-off-by: Mark Brown <broonie@kernel.org>
2024-08-07 23:45:12 +01:00
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accel
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accessibility
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acpi
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amba
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android
binder: fix hang of unregistered readers
2024-07-12 11:31:37 +02:00
ata
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atm
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auxdisplay
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2024-07-26 11:04:28 -07:00
base
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bcma
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block
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cache
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cdrom
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
cdx
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char
sysctl: treewide: constify the ctl_table argument of proc_handlers
2024-07-24 20:59:29 +02:00
clk
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clocksource
of: remove internal arguments from of_property_for_each_u32()
2024-07-25 06:53:47 -05:00
comedi
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connector
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counter
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cpuidle
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crypto
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devfreq
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dio
dio: Have dio_bus_match() callback take a const *
2024-07-10 15:38:14 +02:00
dma
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dma-buf
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dpll
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edac
minmax: add a few more MIN_T/MAX_T users
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eisa
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extcon
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firewire
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fpga
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fsi
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gnss
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gpio
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minmax: add a few more MIN_T/MAX_T users
2024-07-28 13:41:14 -07:00
greybus
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idle
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iio
of: remove internal arguments from of_property_for_each_u32()
2024-07-25 06:53:47 -05:00
infiniband
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input
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interconnect
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iommu
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2024-07-27 12:39:55 -07:00
ipack
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irqchip
of: remove internal arguments from of_property_for_each_u32()
2024-07-25 06:53:47 -05:00
isdn
mISDN: Fix a use after free in hfcmulti_tx()
2024-07-25 08:05:05 -07:00
leds
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2024-07-17 17:51:30 -07:00
macintosh
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mailbox
mailbox: mtk-cmdq: Move devm_mbox_controller_register() after devm_pm_runtime_enable()
2024-07-19 21:25:23 -05:00
mcb
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2024-07-25 10:42:22 -07:00
md
minmax: add a few more MIN_T/MAX_T users
2024-07-28 13:41:14 -07:00
media
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memstick
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message
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mfd
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mux
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net
minmax: add a few more MIN_T/MAX_T users
2024-07-28 13:41:14 -07:00
nfc
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ntb
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nvdimm
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parisc
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parport
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pinctrl
of: remove internal arguments from of_property_for_each_u32()
2024-07-25 06:53:47 -05:00
platform
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power
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ps3
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rapidio
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ras
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rtc: stm32: add new st,stm32mp25-rtc compatible and check RIF configuration
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sbus: add missing MODULE_DESCRIPTION() macros
2024-07-11 15:42:03 +02:00
scsi
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sh
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siox
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soundwire
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spi
spi: spi-fsl-lpspi: Fix scldiv calculation
2024-08-07 23:45:12 +01:00
spmi
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ssb
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tee
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thermal
thermal: core: Back off when polling thermal zones on errors
2024-07-24 12:40:23 +02:00
thunderbolt
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usb
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w1
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watchdog
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Kconfig
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Makefile
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