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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes
Some fixes for rk3399 register errors that revealed themself
during actual use.
* tag 'v4.8-rockchip-clk-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: mark aclk_emmc_noc as a critical clock on rk3399
clk: rockchip: fix incorrect GATE bits for {c, g}pll_aclk_perihp_src on rk3399
clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399
clk: rockchip: fix rk3399 aclk_vio gate bit
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We don't have code to handle any of the noc clocks in rk3399 and they're
all just listed as critical clocks. Let's do the same for
aclk_emmc_noc.
Without this clock being marked as critical we have problems around
suspend/resume after commit 20c389e656a8 ("clk: rockchip: fix incorrect
aclk_emmc source gate bits on rk3399"). Before that change we were
presumably not actually gating any of these clocks because we were
setting the wrong gate.
Fixes: 20c389e656a8 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Tegra114 has a HW bug that the PLLD/PLLD2 lock bit cannot be asserted when
the DIS power domain is during up-powergating process but the clamp to this
domain is not removed yet. That causes a timeout and aborts the power
sequence, although the PLLD/PLLD2 has already locked. To remove the false
alarm, we don't use the lock for PLLD/PLLD2. Just wait 1ms and treat the
clocks as locked.
Signed-off-by: Vince Hsu <vinceh@nvidia.com>
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Sorry to refer incorrect clock diagram, we double check it that the bits
configuration of the Xpll_aclk_perihp_src need to be fixed:
bit 1 - shows aclk_perihp_cpll_src_en
bit 0 - shows aclk_perihp_gpll_src_en
Through the testing that plug/unplug the USB ethernet cable on the RK3399 kevin board.
1. the hclk_host0 and hclk_host1 are endpoint clocks:
cpll --> G5[1] --> aclk_perihp_cpll_src --\ |--> hclk_host0
| --> ... ---> |
gpll --> G5[0] --> aclk_perihp_gpll_src --/ |--> hclk_host1
2. there is no clock below the cpll_aclk_perihp_src,
and the hclk_hostX are below the gpll_aclk_perihp_src:
pll_cpll 1 1 800000000 0 0
cpll 7 19 800000000 0 0
cpll_aclk_perihp_src 0 0 800000000 0 0
...
pll_gpll 1 1 594000000 0 0
gpll 10 10 594000000 0 0
gpll_aclk_perihp_src 2 2 594000000 0 0
hclk_perihp 5 5 74250000 0 0
hclk_host1_arb 2 2 74250000 0 0
hclk_host1 2 2 74250000 0 0
hclk_host0_arb 2 2 74250000 0 0
hclk_host0 2 2 74250000 0 0
3. by default, G5[0] and G5[1] are enabled:
localhost ~ # mem r 0xff760314
0x000003e0
4. close the G5[1] (aclk_perihp_cpll_src), and plug/unplug USB ethernet cable,
the DUT still works well:
localhost ~ # mem w 0xff760314 0xffff03e2
localhost ~ # mem r 0xff760314
0x000003e2
plug/unplug, the work statue is ok
5. close the G5[0] (aclk_perihp_gpll_src), , and plug/unplug USB ethernet cable,
the DUT will be crashed:
localhost ~ # mem w 0xff760314 0xffff03e1
localhost ~ # mem r 0xff760314
0x000003e1
plug/unplug, the DUT is crashed
Summary:
bit 1 - shows aclk_perihp_cpll_src_en
bit 0 - shows aclk_perihp_gpll_src_en
Fixes: 3bd14ae9da91 ("clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
[here the clock-documentation in the manual was actually stating the wrong
bits and thus only Xing's testing above revealed the issue]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Dues to incorrect diagram, we need to fix incorrect bits for
(c/g)pll_aclk_emmc_src:
cpll_aclk_emmc_src --> G6[13]
gpll_aclk_emmc_src --> G6[12]
Fixes: 115510053e5e ("clk: rockchip: add clock controller for the RK3399")
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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According to the datasheet, SDn clocks are from the SDSRC clock. And
the SDSRC has a 1/2 divider. So, we should have ".sdsrc" as an internal
core clock. Otherwise, since the sdhi driver will calculate clock for
a sd card using the wrong parent clock rate, and then performance will
be not good.
Fixes: 90c073e53909da85 ("clk: shmobile: r8a7795: Add SD divider support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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Fix incorrect rk3399 aclk_vio gating bit, it should be 0, not 10.
Fixes: 115510053e5e ("clk: rockchip: add clock controller for the RK3399")
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Xing Zheng <zhengxing@rock-chips.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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The condition passed to read*_poll_timeout() is the break condition,
i.e. wait for this condition to happen and return success.
The original code assumed the opposite, resulting in a warning when
the PLL clock rate was changed but never lost it's lock as far as
the readout indicated. This was verified by checking the read out
register value.
Fixes: 1d80c14248d6 ("clk: sunxi-ng: Add common infrastructure")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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There was only one use of __initdata_refok and __exit_refok
__init_refok was used 46 times against 82 for __ref.
Those definitions are obsolete since commit 312b1485fb50 ("Introduce new
section reference annotations tags: __ref, __refdata, __refconst")
This patch removes the following compatibility definitions and replaces
them treewide.
/* compatibility defines */
#define __init_refok __ref
#define __initdata_refok __refdata
#define __exit_refok __ref
I can also provide separate patches if necessary.
(One patch per tree and check in 1 month or 2 to remove old definitions)
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM DT updates from Olof Johansson:
"Device tree contents continue to be the largest branches we submit.
This time around, some of the contents worth pointing out is:
New SoC platforms:
- Freescale i.MX 7Solo
- Broadcom BCM23550
- Cirrus Logic EP7209 and EP7211 (clps711x platforms)_
- Hisilicon HI3519
- Renesas R8A7792
Some of the other delta that is sticking out, line-count wise:
- Exynos moves of IP blocks under an SoC bus, which causes a large
delta due to indentation changes
- a new Tegra K1 board: Apalis
- a bunch of small updates to many Allwinner platforms; new hardware
support, some cleanup, etc"
* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (426 commits)
ARM: dts: sun8i: Add dts file for inet86dz board
ARM: dts: sun8i: Add dts file for Polaroid MID2407PXE03 tablet
ARM: dts: sun8i: Use sun8i-reference-design-tablet for ga10h dts
ARM: dts: sun8i: Use sun8i-reference-design-tablet for polaroid mid2809pxe04
ARM: dts: sun8i: reference-design-tablet: Add drivevbus-supply
ARM: dts: Copy sun8i-q8-common.dtsi sun8i-reference-design-tablet.dtsi
ARM: dts: sun5i: Use sun5i-reference-design-tablet.dtsi for utoo p66 dts
ARM: dts: sun5i: Use sun5i-reference-design-tablet.dtsi for dit4350 dts
ARM: dts: sun5i: reference-design-tablet: Remove mention of q8
ARM: dts: sun5i: reference-design-tablet: Set lradc vref to avcc
ARM: dts: sun5i: Rename sun5i-q8-common.dtsi sun5i-reference-design-tablet.dtsi
ARM: dts: sun5i: Move q8 display bits to sun5i-a13-q8-tablet.dts
ARM: dts: sunxi: Rename sunxi-q8-common.dtsi sunxi-reference-design-tablet.dtsi
ARM: dts: at91: Don't build unnecessary dtbs
ARM: dts: at91: sama5d3x: separate motherboard gmac and emac definitions
ARM: dts: at91: at91sam9g25ek: fix isi endpoint node
ARM: dts: at91: move isi definition to at91sam9g25ek
ARM: dts: at91: fix i2c-gpio node name
ARM: dts: at91: vinco: fix regulator name
ARM: dts: at91: ariag25 : fix onewire node
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"Driver updates for ARM SoCs.
A slew of changes this release cycle. The reset driver tree, that we
merge through arm-soc for historical reasons, is also sizable this
time around.
Among the changes:
- clps711x: Treewide changes to compatible strings, merged here for simplicity.
- Qualcomm: SCM firmware driver cleanups, move to platform driver
- ux500: Major cleanups, removal of old mach-specific infrastructure.
- Atmel external bus memory driver
- Move of brcmstb platform to the rest of bcm
- PMC driver updates for tegra, various fixes and improvements
- Samsung platform driver updates to support 64-bit Exynos platforms
- Reset controller cleanups moving to devm_reset_controller_register() APIs
- Reset controller driver for Amlogic Meson
- Reset controller driver for Hisilicon hi6220
- ARM SCPI power domain support"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (100 commits)
ARM: ux500: consolidate base platform files
ARM: ux500: move soc_id driver to drivers/soc
ARM: ux500: call ux500_setup_id later
ARM: ux500: consolidate soc_device code in id.c
ARM: ux500: remove cpu_is_u* helpers
ARM: ux500: use CLK_OF_DECLARE()
ARM: ux500: move l2x0 init to .init_irq
mfd: db8500 stop passing around platform data
ASoC: ab8500-codec: remove platform data based probe
ARM: ux500: move ab8500_regulator_plat_data into driver
ARM: ux500: remove unused regulator data
soc: raspberrypi-power: add CONFIG_OF dependency
firmware: scpi: add CONFIG_OF dependency
video: clps711x-fb: Changing the compatibility string to match with the smallest supported chip
input: clps711x-keypad: Changing the compatibility string to match with the smallest supported chip
pwm: clps711x: Changing the compatibility string to match with the smallest supported chip
serial: clps711x: Changing the compatibility string to match with the smallest supported chip
irqchip: clps711x: Changing the compatibility string to match with the smallest supported chip
clocksource: clps711x: Changing the compatibility string to match with the smallest supported chip
clk: clps711x: Changing the compatibility string to match with the smallest supported chip
...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC platform updates from Olof Johansson:
"Improved and new platform support for various SoCs:
New SoC support:
- Broadcom BCM23550
- Freescale i.MX7Solo
- Qualcomm MDM9615
- Renesas r8a7792
Improvements:
- convert clps711x to multiplatform
- debug uart improvements for Atmel platforms
- Tango platform improvements: HOTPLUG_CPU, Suspend-to-ram
- OMAP tweaks and improvements to hwmod
- OMAP support for kexec on SMP"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (109 commits)
ARM: davinci: fix build break because of undeclared dm365_evm_snd_data
ARM: s3c64xx: smartq: Avoid sparse warnings
ARM: sti: Implement dummy L2 cache's write_sec
ARM: STi: Update machine _namestr to be more generic.
arm: meson: explicitly select clk drivers
ARM: tango: add Suspend-to-RAM support
ARM: hisi: consolidate the hisilicon machine entries
ARM: tango: fix CONFIG_HOTPLUG_CPU=n build
MAINTAINERS: Update BCM281XX/BCM11XXX/BCM216XX entry
MAINTAINERS: Update BCM63XX entry
MAINTAINERS: Add NS2 entry
MAINTAINERS: Fix nsp false-positives
MAINTAINERS: Change L to M for Broadcom ARM/ARM64 SoC entries
ARM: debug: Enable DEBUG_BCM_5301X for Northstar Plus SoCs
ARM: clps711x: Switch to MULTIPLATFORM
ARM: clps711x: Remove boards support
ARM: clps711x: Add basic DT support
ARM: clps711x: Reduce static map size
ARM: SAMSUNG: Constify iomem address passed to s5p_init_cpu
ARM: oxnas: Change OX810SE default driver config
...
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Sorting is hard.
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
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Since commit 1bdf02326b71e ("clk: at91: make use of syscon/regmap
internally"), clk_programmable_set_parent() is always selecting the
first parent (AKA slow_clk), no matter what's passed in the 'index'
parameter.
Fix that by initializing the pckr variable to the index value.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Hans Verkuil <hans.verkuil@cisco.com>
Fixes: 1bdf02326b71e ("clk: at91: make use of syscon/regmap internally")
Cc: <stable@vger.kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1468828152-18389-1-git-send-email-boris.brezillon@free-electrons.com
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This reverts commit e16fb2e6355c1c1b41623af9e01ada196e2af098.
Updated documentation from the chip vendor reveals that this clock is
not required for correct operation of the MMC controller. As such, do
not expose it to DT.
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into next/late
Merge "STi late updates for v4.8" from Patrice Chotard:
- Add STi DT critical clocks declaration
- Remove SPI hack wich has dependecy with critical clocks
These 2 STi DT patches and SPI hack MUST be applied after patches
contained into Stephen Boyd's branch clk-next/clk-st-critical.
This to ensure not to break SPI.
* tag 'sti-late-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
spi: st-ssc4: Remove 'no clocking' hack
ARM: sti: stih410-clocks: Identify critical clocks
ARM: sti: stih407-family: Supply defines for CLOCKGEN A0
clk: st: clkgen-pll: Detect critical clocks
clk: st: clkgen-fsyn: Detect critical clocks
clk: st: clk-flexgen: Detect critical clocks
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/drivers
Merge "Ux500 cleanups from Arnd" from Linus Walleij:
This is a set of cleanups for the Ux500 that reduce the number
of machine-local files and boardfile-type data for regulators
and ASoC.
* tag 'ux500-cleanup-bundle' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
ARM: ux500: consolidate base platform files
ARM: ux500: move soc_id driver to drivers/soc
ARM: ux500: call ux500_setup_id later
ARM: ux500: consolidate soc_device code in id.c
ARM: ux500: remove cpu_is_u* helpers
ARM: ux500: use CLK_OF_DECLARE()
ARM: ux500: move l2x0 init to .init_irq
mfd: db8500 stop passing around platform data
ASoC: ab8500-codec: remove platform data based probe
ARM: ux500: move ab8500_regulator_plat_data into driver
ARM: ux500: remove unused regulator data
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Any clock dependencies can be properly handled with deferred probing
so we can remove core_initcall and switch to a proper loadable platform
driver module.
This change has been tested on Exynos4412 Odroid U3 based board.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1467987300-31450-1-git-send-email-s.nawrocki@samsung.com
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The Kconfig currently controlling compilation of this code is:
arch/arm/mach-s5pv210/Kconfig:config ARCH_S5PV210
arch/arm/mach-s5pv210/Kconfig: bool "Samsung S5PV210/S5PC110" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since this code is already not using module_init, case, the init
ordering remains unchanged with this commit.
We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-8-paul.gortmaker@windriver.com
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Because the Exynos5433 SPI driver supports the ioclk handling and
the following patch:
http://marc.info/?l=linux-kernel&m=146787645626318&w=2
fixes a synchronus abort issue, none of the SPI clocks require
any critical handling: remove, then, the CLK_IGNORE_UNUSED flag
for the SPI related clocks.
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1468317736-18841-8-git-send-email-andi.shyti@samsung.com
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The clk-oxnas driver is specific to its architecture, so do not
propose it on other architectures, unless build-testing.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160707091844.196a7930@endymion
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All device trees currently in mainline specify the time clock parent
using the assigned-clocks/assigned-clock-parents method, there is no
need to statically assign the parent in the core clock driver.
Also all current boards provide an Ethernet reference clock for the
PHY externally, hence configuring the internal PHY reference clock.
Furthermore, and the actual driver of this patch, specify ethernet
related parents at that early point in boot leads to a warning:
bad: scheduling from the idle thread!
The reason for the warning is that setting the parent enables the ENET
PLL since we are using CLK_OPS_PARENT_ENABLE. Enabling the ENET PLL can
cause clk_pllv3_wait_lock to sleep. See also:
commit fc8726a2c021 ("clk: core: support clocks which requires parents
enable (part 2)").
Note that setting the ENET AXI root clock parent also requires ENET
PLL to be enabled. However, U-Boot typically leaves the ENET PLL on,
hence when the framework sets the parent of the first clock, it does
not need to wait for the PLL to come up. But because there is currently
no user of that clock, the PLL gets disabled after setting the parent.
Therefore, subsequent reparenting calls of any clock which somehow rely
on the ENET PLL, need to reenable the ENET PLL which leads to a sleep.
Removing those subsequent reparenting calls works around this issue.
Also remove comments. The code is really verbose enough.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Tested-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160703174813.13970-1-stefan@agner.ch
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The ux500 DT support predates the CLK_OF_DECLARE macro and calls
directly into the clk driver from platform code.
Converting this to CLK_OF_DECLARE makes the code much nicer and
similar to how modern platforms do it today. It also removes the
last user of cpu_is_u8500_family() etc.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The Kconfig symbol for the sun8i SoC family was mistyped. Fix that.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160711203448.18062-2-maxime.ripard@free-electrons.com
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The code had a typo and got the wrong offset for the hardcoded divider, fix
that.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reported-by: Jean-Francois Moine <moinejf@free.fr>
Reported-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160711203448.18062-1-maxime.ripard@free-electrons.com
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Add the list of clocks and resets found in the H3 CCU.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-14-maxime.ripard@free-electrons.com
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Introduce support for clocks that use a combination of two linear
multipliers (N and K factors), one linear divider (M) and one power of two
divider (P).
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-13-maxime.ripard@free-electrons.com
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Introduce support for clocks that multiply and divide using two linear
multipliers and one linear divider.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-12-maxime.ripard@free-electrons.com
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Introduce support for clocks that multiply and divide using linear factors.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-11-maxime.ripard@free-electrons.com
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Introduce support for clocks that use a combination of two linear
multipliers.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-10-maxime.ripard@free-electrons.com
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Introduce support for the clocks that combine a linear divider and a
power-of-two based one.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-9-maxime.ripard@free-electrons.com
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Add support for the various dividers (linear, table or pow-of-two based)
found in the CCU.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-8-maxime.ripard@free-electrons.com
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Add support for the clocks in the CCU that introduce a phase shift from
their parent clock.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-7-maxime.ripard@free-electrons.com
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Some clocks in the Allwinner SoCs clocks unit are just muxes.
However, those muxes might also be found in some other complicated clocks
that would benefit from the code in there to deal with "advanced" features,
like pre-dividers.
Introduce a set of helpers to reduce the code duplication in such cases.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-6-maxime.ripard@free-electrons.com
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Some clocks in the Allwinner SoCs clocks unit are just simple gates. Add
support for those clocks.
Since it's a feature that can also be found in more complex clocks, provide
a bunch of helpers that can be reused later on.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-5-maxime.ripard@free-electrons.com
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Some clocks can be switched to a mode called fractional that have two fixed
output rate you can choose from.
Add a small library to deal with those clocks.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-4-maxime.ripard@free-electrons.com
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Start our new clock infrastructure by adding the registration code, common
structure and common code.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160629190535.11855-3-maxime.ripard@free-electrons.com
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In order to allow wake support in STOP sleep mode, clocks are needed. Use
imx_clk_gate2_cgr to disable automatic clock gating in low power mode STOP.
This allows to enable wake by UART using:
echo enabled > /sys/class/tty/ttyLP0/power/wakeup
However, if wake is not enabled, the driver should disable the clocks explicitly
to save power.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160628053235.5114-3-bhuvanchandra.dv@toradex.com
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When failing to lookup the assigned clock for setting its parents, we
were previously printing a misleading error message that lead to think
that it was the parent clock what couldn't be found.
Change error message to make clear that it's the assigned clock what
couldn't be found in this case.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1467962078-30405-1-git-send-email-tomeu.vizoso@collabora.com
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The MMC_PCLK is needed for the SD/eMMC driver, expose to DT (and comment
out in clk driver)
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160707033837.20029-1-khilman@baylibre.com
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This is likely that checking 'clks[idx]' instead of 'clks[n]' is
expected here.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1467526003-13318-1-git-send-email-christophe.jaillet@wanadoo.fr
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This patch add the support to select the peripheral clock (PERIPH)
as a parent clock source using the "assigned-clock-parents"
parameter in the device tree.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1464982475-24738-1-git-send-email-slemieux.tyco@gmail.com
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We have the following file --> Kconfig mapping:
sunxi/clk-factors.c obj-y
sunxi/clk-sun6i-apb0-gates.c CONFIG_MFD_SUN6I_PRCM (bool)
sunxi/clk-sun6i-apb0.c CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun6i-ar100.c CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun8i-apb0.c CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun9i-mmc.c obj-y
Hence none of these are being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only. All
drivers get mostly the same changes, so they are handled in batch.
Changes are (1) convert to builtin_platform_register, (2) use the
init.h header, (3) delete the MODULE_LICENCE/MODULE_AUTHOR and
associated tags, and (4) delete any ".remove" functions.
There was a stray module.h in a file not using any init.h or
module.h stuff, so we simply removed that one.
In two cases, we explicitly disallow a driver unbind, since that
doesn't have a sensible use case anyway, and it allows us to drop
the ".remove" code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
We delete the MODULE_LICENSE etc. tags since all that information
is already contained at the top of each file in the comments.
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: "Emilio López" <emilio@elopez.com.ar>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-9-paul.gortmaker@windriver.com
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The Kconfig currently controlling compilation of this code is:
drivers/clk/Kconfig:config COMMON_CLK_OXNAS
drivers/clk/Kconfig: bool "Clock driver for the OXNAS SoC Family"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-6-paul.gortmaker@windriver.com
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