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linux_old1/drivers/clk
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A.s. Dong 4046807942 clk: imx: add gatable clock divider support 
For dividers with zero indicating clock is disabled, instead of giving a
warning each time like "clkx: Zero divisor and CLK_DIVIDER_ALLOW_ZERO not
set" in exist code, we'd like to introduce enable/disable function for it.
e.g.
000b - Clock disabled
001b - Divide by 1
010b - Divide by 2
...

Set rate when the clk is disabled will cache the rate request and only
when the clk is enabled will the driver actually program the hardware to
have the requested divider value. Similarly, when the clk is disabled we'll
write a 0 there, but when the clk is enabled we'll restore whatever rate
(divider) was chosen last.

It does mean that recalc rate will be sort of odd, because when the clk is
off it will return 0, and when the clk is on it will return the right rate.
So to make things work, we'll need to return the cached rate in recalc rate
when the clk is off and read the hardware when the clk is on.

NOTE for the default off divider, the recalc rate will still return 0 as
there's still no proper preset rate. Enable such divider will give user
a reminder error message.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@kernel.org: Include clk.h for sparse warnings]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
 		2018-12-03 11:31:23 -08:00
..
actions clk: actions: Add Actions Semi S900 SoC Reset Management Unit support 2018-10-16 14:41:53 -07:00
at91 Merge branches 'clk-actions-reset', 'clk-imx7-init-critical', 'clk-mmp2-ids' and 'clk-at91-pmc-rework' into clk-next 2018-10-18 15:43:48 -07:00
axis
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axs10x clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
bcm clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
berlin This time we have a good set of changes to the core framework that do some 2018-06-09 12:06:24 -07:00
davinci clk: davinci: kill davinci_clk_reset_assert/deassert() 2018-10-02 08:54:14 -07:00
h8300 clk: h8300: pr_err() strings should end with newlines 2017-12-06 22:40:02 -08:00
hisilicon Merge branches 'clk-samsung', 'clk-hisi3670' and 'clk-at91-div-0' into clk-next 2018-10-18 15:41:36 -07:00
imgtec Update MIPS email addresses 2017-11-03 09:02:30 -07:00
imx clk: imx: add gatable clock divider support 2018-12-03 11:31:23 -08:00
ingenic clk: Add Ingenic jz4725b CGU driver 2018-10-16 15:19:48 -07:00
keystone Merge branch 'clk-k3-tisci' into clk-next 2018-10-18 15:40:10 -07:00
loongson1
…
mediatek clk: mediatek: remove unused array audio_parents 2018-08-30 18:29:36 -07:00
meson clk: meson: meson8b: use the regmap in the internal reset controller 2018-09-26 12:02:00 +02:00
microchip
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mmp clk: mmp2: fix the clock id for sdh2_clk and sdh3_clk 2018-10-17 09:02:31 -07:00
mvebu This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
mxs clk: mxs: make clk_ops const 2017-11-01 23:25:43 -07:00
nxp clk: lpc32xx: Set name of regmap_config 2018-03-19 14:35:16 -07:00
pistachio
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pxa clk: pxa: export 32kHz PLL 2018-07-06 13:52:57 -07:00
qcom Merge branches 'clk-fixed-rate-remove' and 'clk-qcom-cleanup' into clk-next 2018-10-18 15:44:13 -07:00
renesas Merge branch 'clk-renesas' into clk-next 2018-10-18 15:38:51 -07:00
rockchip clk: rockchip: Fix static checker warning in rockchip_ddrclk_get_parent call 2018-10-17 15:12:51 +02:00
samsung clk: samsung: Use clk_hw API for calling clk framework from clk notifiers 2018-10-05 13:36:39 +02:00
sirf We have two changes to the core framework this time around. The first being a 2017-11-17 20:04:24 -08:00
socfpga clk: socfpga: stratix10: fix the sdmmc_free_clk mux 2018-07-06 11:08:02 -07:00
spear clk: spear: fix WDT clock definition on SPEAr600 2018-04-06 13:45:34 -07:00
sprd clk: sprd: add RTC gate for SC9860 2018-03-16 15:53:30 -07:00
st clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
sunxi clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
sunxi-ng This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
tegra clk: tegra210: Include size.h for compilation ease 2018-10-16 15:33:01 -07:00
ti This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
uniphier clk: uniphier: add clock frequency support for SPI 2018-07-25 16:26:18 -07:00
ux500 clk: ux500: Drop AB8540/9540 support 2018-03-23 09:36:11 -07:00
versatile clk: versatile: Remove WARNs in ->round_rate() 2018-03-16 15:31:16 -07:00
x86 clk: x86: Stop marking clocks as CLK_IS_CRITICAL 2018-09-17 18:47:58 -07:00
zte clk: move clock common macros out from vendor directories 2017-12-21 15:00:38 -08:00
zynq clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
zynqmp drivers: clk: Add ZynqMP clock driver 2018-10-09 13:29:19 +02:00
Kconfig This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
Makefile This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
clk-asm9260.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-aspeed.c The new and exciting feature this time around is in the clk core. 2018-08-15 21:41:21 -07:00
clk-axi-clkgen.c clk: axi-clkgen: Round closest in round_rate() and recalc_rate() 2017-12-21 18:07:53 -08:00
clk-axm5516.c
…
clk-bulk.c clk: add new APIs to operate on all available clocks 2018-10-16 15:42:48 -07:00
clk-cdce706.c
…
clk-cdce925.c Merge branches 'clk-dt-name', 'clk-ti-of-node' and 'clk-sa' into clk-next 2018-10-18 15:33:52 -07:00
clk-clps711x.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-composite.c
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clk-conf.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-cs2000-cp.c clk: cs2000-cp: convert to SPDX identifiers 2018-08-02 13:55:00 -07:00
clk-devres.c clk: add managed version of clk_bulk_get_all 2018-10-16 15:42:49 -07:00
clk-divider.c clk: divider: read-only divider can propagate rate change 2018-03-12 15:10:26 -07:00
clk-efm32gg.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-fixed-factor.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-fixed-rate.c clk: fixed-rate: fix of_node_get-put imbalance 2018-10-18 13:40:15 -07:00
clk-fractional-divider.c clk: fractional-divider: allow overriding of approximation 2017-08-08 17:39:48 +02:00
clk-gate.c clk: gate: expose clk_gate_ops::is_enabled 2017-08-31 18:35:45 -07:00
clk-gemini.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
clk-gpio.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-hi655x.c clk: hi6220: Add the hi655x's pmic clock 2017-04-21 19:18:53 -07:00
clk-highbank.c
…
clk-hsdk-pll.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-max9485.c clk: Add driver for MAX9485 2018-07-06 13:44:06 -07:00
clk-max77686.c clk: max77686: Add SPDX license identifiers 2018-08-27 14:16:51 -07:00
clk-moxart.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
clk-multiplier.c
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clk-mux.c clk: honor CLK_MUX_ROUND_CLOSEST in generic clk mux 2018-04-16 09:25:07 -07:00
clk-nomadik.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-npcm7xx.c This time it looks like a quieter release cycle in the clk tree. I guess that's 2018-10-31 11:08:30 -07:00
clk-nspire.c
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clk-oxnas.c
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clk-palmas.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-pwm.c
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clk-qoriq.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-rk808.c
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clk-s2mps11.c Merge branches 'clk-imx6-mmdc', 'clk-qcom-krait', 'clk-rockchip' and 'clk-smp2s11-match' into clk-next 2018-10-18 15:44:01 -07:00
clk-scmi.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-scpi.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-si514.c clk-si514, clk-si544: Implement prepare/unprepare/is_prepared operations 2018-06-29 10:59:40 -07:00
clk-si544.c clk-si514, clk-si544: Implement prepare/unprepare/is_prepared operations 2018-06-29 10:59:40 -07:00
clk-si570.c
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clk-si5351.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-si5351.h
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clk-stm32f4.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-stm32h7.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-stm32mp1.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-tango4.c clk: Convert to using %pOFn instead of device_node.name 2018-08-30 09:50:20 -07:00
clk-twl6040.c clk: make clk_init_data const 2017-11-01 23:25:51 -07:00
clk-u300.c clk: clk-u300: Fix a typo in two comment lines 2017-11-13 17:39:43 -08:00
clk-versaclock5.c clk: vc5: Add support for IDT VersaClock 5P49V5925 2017-07-17 11:51:00 -07:00
clk-vt8500.c
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clk-wm831x.c clk: make clk_init_data const 2017-11-01 23:25:51 -07:00
clk-xgene.c clk: clk-xgene: Adjust six checks for null pointers 2017-11-13 17:40:03 -08:00
clk.c clk: Clean up suspend/resume coding style 2018-10-11 09:28:13 -07:00
clk.h clk: Move __clk_{get,put}() into private clk.h API 2018-01-04 15:13:29 -08:00
clkdev.c ARM: 8778/1: clkdev: don't call __of_clk_get_by_name() unnecessarily from clk_get() 2018-08-13 16:27:52 +01:00