Uwe Kleine-König 26bac95aa8 clk: divider: fix selection of divider when rounding to closest ...

It's an invalid approach to assume that among two divider values
the one nearer the exact divider is the better one.

Assume a parent rate of 1000 Hz, a divider with CLK_DIVIDER_POWER_OF_TWO
and a target rate of 89 Hz. The exact divider is ~ 11.236 so 8 and 16
are the candidates to choose from yielding rates 125 Hz and 62.5 Hz
respectivly. While 8 is nearer to 11.236 than 16 is, the latter is still
the better divider as 62.5 is nearer to 89 than 125 is.

Fixes: 774b514390 (clk: divider: Add round to closest divider)
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>

2015-03-09 14:19:54 -07:00

..

at91

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

bcm

clk: Add rate constraints to clocks

2015-02-02 14:23:42 -08:00

berlin

clk: berlin: bg2q: remove non-exist "smemc" gate clock

2015-01-13 10:58:43 -08:00

hisilicon

clk: Add rate constraints to clocks

2015-02-02 14:23:42 -08:00

keystone

…

mmp

clk: Add rate constraints to clocks

2015-02-02 14:23:42 -08:00

mvebu

clk: mvebu: add suspend/resume for gatable clocks

2014-11-30 16:40:12 +00:00

mxs

Revert "clk: mxs: Fix invalid 32-bit access to frac registers"

2015-02-18 10:13:26 -08:00

pxa

clk: Replace explicit clk assignment with __clk_hw_set_clk

2015-02-18 09:40:11 -08:00

qcom

clk: qcom: fix platform_no_drv_owner.cocci warnings

2015-02-25 12:14:35 -08:00

rockchip

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

samsung

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

shmobile

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

sirf

…

socfpga

…

spear

Merge branch 'clk-fixes' into clk-next

2014-07-13 07:56:45 -07:00

st

clk: Replace explicit clk assignment with __clk_hw_set_clk

2015-02-18 09:40:11 -08:00

sunxi

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

tegra

clk: Replace explicit clk assignment with __clk_hw_set_clk

2015-02-18 09:40:11 -08:00

ti

clk: ti: Fix FAPLL parent enable bit handling

2015-02-25 12:06:29 -08:00

ux500

clk: ux500: Drop use of clk-private.h

2015-01-27 11:56:33 -08:00

versatile

ARM: vexpress: Remove non-DT code

2014-11-28 16:08:16 +01:00

x86

clk: x86: drop owner assignment from platform_drivers

2014-10-20 16:20:23 +02:00

zynq

clk: zynq: Force CPU_2X clock to be ungated

2015-01-27 17:00:24 -08:00

clk-asm9260.c

ARM: clk: add clk-asm9260 driver

2015-01-20 10:10:51 -08:00

clk-axi-clkgen.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-axm5516.c

clk: drop owner assignment from platform_drivers

2014-10-20 16:20:22 +02:00

clk-bcm2835.c

…

clk-cdce706.c

clk: TI CDCE706 clock synthesizer driver

2015-01-17 13:52:40 -08:00

clk-clps711x.c

clk: Add CLPS711X clk driver

2014-07-28 23:30:46 -07:00

clk-composite.c

clk: Replace explicit clk assignment with __clk_hw_set_clk

2015-02-18 09:40:11 -08:00

clk-conf.c

clk: Add missing of_clk_set_defaults export

2014-08-04 09:48:39 -07:00

clk-devres.c

…

clk-divider.c

clk: divider: fix selection of divider when rounding to closest

2015-03-09 14:19:54 -07:00

clk-efm32gg.c

clk/efm32gg: fix dt init prototype

2014-09-09 13:52:18 -07:00

clk-fixed-factor.c

…

clk-fixed-rate.c

…

clk-fractional-divider.c

clk: fractional-divider: cast parent_rate to u64 before multiplying

2014-09-10 09:42:37 -07:00

clk-gate.c

clk-gate: fix bit # check in clk_register_gate()

2015-01-20 10:09:05 -08:00

clk-gpio-gate.c

clk: gpio-gate: Ensure gpiod_ APIs are prototyped

2014-09-30 11:57:54 -07:00

clk-highbank.c

…

clk-ls1x.c

clk: ls1x: Update relationship among all clocks

2014-11-24 07:45:09 +01:00

clk-max77686.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-max77802.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-max-gen.c

clk: Add generic driver for Maxim PMIC clocks

2014-09-09 13:55:44 -07:00

clk-max-gen.h

clk: Add generic driver for Maxim PMIC clocks

2014-09-09 13:55:44 -07:00

clk-moxart.c

…

clk-mux.c

clk: Add clk_unregister_{divider, gate, mux} to close memory leak

2015-01-17 13:52:41 -08:00

clk-nomadik.c

…

clk-nspire.c

…

clk-palmas.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-qoriq.c

clk: qoriq: Add support for the platform PLL

2015-02-18 09:56:43 -08:00

clk-rk808.c

clk: RK808: add clkout driver for RK808

2014-10-14 02:18:18 +02:00

clk-s2mps11.c

Merge tag 'clk-for-linus-3.19' of git://git.linaro.org/people/mike.turquette/linux

2014-12-20 16:42:36 -08:00

clk-si570.c

clk: si570: Fix email address specifiction

2014-05-20 16:18:18 +02:00

clk-si5351.c

…

clk-si5351.h

…

clk-twl6040.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-u300.c

clk: u300: Terminate of match table

2014-05-27 18:29:04 -07:00

clk-vt8500.c

…

clk-wm831x.c

clk: Remove .owner field for driver

2014-09-25 17:43:31 -07:00

clk-xgene.c

…

clk.c

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

clk.h

clkdev: Always allocate a struct clk and call __clk_get() w/ CCF

2015-02-06 17:53:20 -08:00

clkdev.c

clkdev: Always allocate a struct clk and call __clk_get() w/ CCF

2015-02-06 17:53:20 -08:00

Kconfig

Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

2015-02-21 12:30:30 -08:00

Makefile

ARM: clk: add clk-asm9260 driver

2015-01-20 10:10:51 -08:00