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6fd63087d8
linux/drivers/spi
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Aaron Brice 6fd63087d8 spi: fsl-dspi: Fix clock rate scale values 
Previous algorithm had an outer loop with the values {2,3,5,7} and an
inner loop with {2,4,6,8,16,32,...,32768}, and would pick the first
value over the required scaling value (where the total scale was the two
numbers multiplied).

Since the inner loop went up to 32768 it would always pick a value of 2
for PBR and a much higher than necessary value for BR.  The desired
scale factor was being divided by two I believe to compensate for the
much higher scale factors (the divide by two not specified in the
reference manual).

Updated to check all values and find the smallest scale factor possible
without going over the desired clock rate.

Signed-off-by: Aaron Brice <aaron.brice@datasoft.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-31 12:13:03 +01:00
..
Kconfig Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2015-02-19 10:36:45 -08:00
Makefile Merge remote-tracking branches 'spi/topic/sirf', 'spi/topic/spidev', 'spi/topic/st-ssc' and 'spi/topic/ti-qspi' into spi-next 2015-02-08 11:16:58 +08:00
spi-adi-v3.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-altera.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-ath79.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-atmel.c spi: atmel: cleanup wait_for_completion return handling 2015-02-04 11:26:03 +00:00
spi-au1550.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-bcm53xx.c treewide: Remove unnecessary BCMA_CORETABLE_END macro 2015-02-11 14:38:28 -08:00
spi-bcm53xx.h spi: bcm53xx: driver for SPI controller on Broadcom bcma SoC 2014-08-19 11:30:55 -05:00
spi-bcm63xx-hsspi.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-bcm63xx.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-bcm2835.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-bfin5xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-bfin-sport.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-bitbang-txrx.h spi: bitbang: Grammar s/make to make/to make/ 2014-01-13 11:24:21 +00:00
spi-bitbang.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-butterfly.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-cadence.c Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/cadence', 'spi/topic/dw' and 'spi/topic/fsl-cpm' into spi-next 2014-12-08 12:17:12 +00:00
spi-clps711x.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-coldfire-qspi.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-davinci.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-dln2.c spi/dln2: simplify return flow for dln2_spi_transfer_setup and dln2_spi_enable 2015-01-06 17:02:50 +00:00
spi-dw-mid.c spi: dw-mid: get a proper clock frequency for SPI2 2015-01-27 12:04:29 +00:00
spi-dw-mmio.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-dw-pci.c spi: dw-mid: get a proper clock frequency for SPI2 2015-01-27 12:04:29 +00:00
spi-dw.c spi: dw: print debug message with FIFO size 2015-01-07 18:01:06 +00:00
spi-dw.h spi: dw-mid: split rx and tx callbacks when DMA 2014-10-28 22:40:38 +00:00
spi-efm32.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-ep93xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-falcon.c Merge remote-tracking branches 'spi/topic/falcon', 'spi/topic/fsf', 'spi/topic/fsl', 'spi/topic/fsl-dspi' and 'spi/topic/gpio' into spi-next 2015-02-08 11:16:46 +08:00
spi-fsl-cpm.c spi: fsl-(e)spi: Support compile as module 2015-01-06 17:03:34 +00:00
spi-fsl-cpm.h spi/spi-fsl-spi: Make driver usable in CPU mode outside of an FSL_SOC environment 2013-04-07 10:07:54 +01:00
spi-fsl-dspi.c spi: fsl-dspi: Fix clock rate scale values 2015-03-31 12:13:03 +01:00
spi-fsl-espi.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
spi-fsl-lib.c spi: fsl-(e)spi: Support compile as module 2015-01-06 17:03:34 +00:00
spi-fsl-lib.h spi: fsl-(e)spi: Support compile as module 2015-01-06 17:03:34 +00:00
spi-fsl-spi.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
spi-fsl-spi.h spi/spi-fsl-spi: Add support for Aeroflex Gaisler GRLIB cores normally running on SPARC 2013-04-07 10:07:56 +01:00
spi-gpio.c Merge remote-tracking branches 'spi/topic/falcon', 'spi/topic/fsf', 'spi/topic/fsl', 'spi/topic/fsl-dspi' and 'spi/topic/gpio' into spi-next 2015-02-08 11:16:46 +08:00
spi-img-spfi.c spi: img-spfi: Select FIFO based on transfer length 2014-12-24 12:20:22 +00:00
spi-imx.c Merge remote-tracking branches 'spi/topic/img-spfi', 'spi/topic/imx', 'spi/topic/inline', 'spi/topic/meson' and 'spi/topic/mxs' into spi-next 2015-02-08 11:16:52 +08:00
spi-lm70llp.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-meson-spifc.c spi: meson: Constify struct regmap_config 2015-01-05 20:11:32 +00:00
spi-mpc52xx-psc.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-mpc52xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-mpc512x-psc.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-mxs.c spi: mxs: cleanup wait_for_completion return handling 2015-02-05 18:04:57 +00:00
spi-nuc900.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-oc-tiny.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-octeon.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-omap2-mcspi.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-omap-100k.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-omap-uwire.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-orion.c spi: orion: Add multiple chip select support to spi-orion 2015-01-16 12:38:54 +00:00
spi-pl022.c PM: Merge the SET*_RUNTIME_PM_OPS() macros 2014-12-04 00:51:30 +01:00
spi-ppc4xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-pxa2xx-dma.c spi: pxa2xx: Cleanup register access macros 2014-12-22 20:17:23 +00:00
spi-pxa2xx-pci.c spi: spi-pxa2xx: SPI support for Intel Quark X1000 2014-11-26 18:07:45 +00:00
spi-pxa2xx-pxadma.c Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/qup', 'spi/topic/rockchip' and 'spi/topic/samsung' into spi-next 2015-02-08 11:16:55 +08:00
spi-pxa2xx.c Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/qup', 'spi/topic/rockchip' and 'spi/topic/samsung' into spi-next 2015-02-08 11:16:55 +08:00
spi-pxa2xx.h spi: pxa2xx: Cleanup register access macros 2014-12-22 20:17:23 +00:00
spi-qup.c spi: qup: Add SPI_CPOL configuration support 2014-12-29 17:14:21 +00:00
spi-rockchip.c spi/rockchip: avoid uninitialized-use warning 2015-01-28 17:36:37 +00:00
spi-rspi.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-s3c24xx-fiq.h
spi-s3c24xx-fiq.S
spi-s3c24xx.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-s3c64xx.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sc18is602.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sh-hspi.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sh-msiof.c spi: sh-msiof: cleanup wait_for_completion return handling 2015-02-04 20:52:53 +00:00
spi-sh-sci.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-sh.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-sirf.c spi: sirf: drop redundant sirf,marco-spi compatible string 2015-01-06 17:38:59 +00:00
spi-st-ssc4.c spi: st-ssc4: Remove duplicate code to test unsupported mode bits 2015-01-14 19:16:56 +00:00
spi-sun4i.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-sun6i.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-tegra20-sflash.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-tegra20-slink.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-tegra114.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi-ti-qspi.c spi: ti-qspi: cleanup wait_for_completion return handling 2015-02-05 18:04:03 +00:00
spi-tle62x0.c spi: tle62x0: remove unnecessary OOM messages 2014-04-29 12:01:42 -07:00
spi-topcliff-pch.c spi: Remove FSF mailing addresses 2014-12-22 15:32:42 +00:00
spi-txx9.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
spi-xcomm.c Merge remote-tracking branches 'spi/topic/sunxi', 'spi/topic/tegra114', 'spi/topic/ti-qspi', 'spi/topic/ti-ssp', 'spi/topic/topcliff-pch', 'spi/topic/txx9', 'spi/topic/xcomm' and 'spi/topic/xfer' into spi-next 2014-03-30 00:51:41 +00:00
spi-xilinx.c spi/xilinx: Fix access invalid memory on xilinx_spi_tx 2015-02-02 12:17:19 +00:00
spi-xtensa-xtfpga.c spi: drop owner assignment from platform_drivers 2014-10-20 16:21:36 +02:00
spi.c Merge remote-tracking branches 'spi/topic/img-spfi', 'spi/topic/imx', 'spi/topic/inline', 'spi/topic/meson' and 'spi/topic/mxs' into spi-next 2015-02-08 11:16:52 +08:00
spidev.c Merge remote-tracking branches 'spi/topic/sirf', 'spi/topic/spidev', 'spi/topic/st-ssc' and 'spi/topic/ti-qspi' into spi-next 2015-02-08 11:16:58 +08:00