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2017-12-20clk: tegra: Fix cclk_lp divisor registerMichał Mirosław1-1/+1
[ Upstream commit 54eff2264d3e9fd7e3987de1d7eba1d3581c631e ] According to comments in code and common sense, cclk_lp uses its own divisor, not cclk_g's. Fixes: b08e8c0ecc42 ("clk: tegra: add clock support for Tegra30") Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-30clk: tegra: Initialize UTMI PLL when enabling PLLUAndrew Bresticker1-111/+2
Move the UTMI PLL initialization code form clk-tegra<chip>.c files into clk-pll.c. UTMI PLL was being configured and set in HW control right after registration. However, when the clock init_table is processed and child clks of PLLU are enabled, it will call in and enable PLLU as well, and initiate SW enabling sequence even though PLLU is already in HW control. This leads to getting UTMIPLL stuck with a SEQ_BUSY status. Doing the initialization once during pllu_enable means we configure it properly into HW control. A side effect of the commonization/localization of the UTMI PLL init code, is that it corrects some errors that were present for earlier generations. For instance, in clk-tegra124.c, it used to have: #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 6) when the correct shift to use is present in the new version: #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 27) which matches the Tegra124 TRM register definition. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> [rklein: Merged in some later fixes for potential deadlocks] Signed-off-by: Rhyland Klein <rklein@nvidia.com> [treding: coding style bike-shedding, remove unused variable] Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-04-28clk: tegra: Fix PLL_U post divider and initial rate on Tegra30Lucas Stach1-5/+6
The post divider value in the frequency table is wrong as it would lead to the PLL producing an output rate of 960 MHz instead of the desired 480 MHz. This wasn't a problem as nothing used the table to actually initialize the PLL rate, but the bootloader configuration was used unaltered. If the bootloader does not set up the PLL it will fail to come when used under Linux. To fix this don't rely on the bootloader, but set the correct rate in the clock driver. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-04-28clk: tegra: Initialize PLL_C to sane rate on Tegra30Lucas Stach1-0/+1
If the bootloader does not touch PLL_C it will stay in its reset state, failing to lock when enabled. This leads to consumers of this clock to fail probing. Fix this by always programming the PLL with a sane rate, which allows it to lock, at startup. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-20clk: tegra: pll: Update PLLM handlingDanny Huang1-1/+1
PLLM is fixed for Tegra30 up through Tegra114. Starting with Tegra124 PLLM can change rate. Mark PLLM as TEGRA_PLL_FIXED for the generations where it should be. Modify the check in clk_pll_round_rate() and clk_pll_recalc_rate() to allow for the non-fixed version to return the correct rate. Note that there is no change for Tegra20. This is because PLLM is not distinguished in that driver, and adding either the PLLM or FIXED_RATE flags will cause potential problems. PLLM never supported dynamic ramping. On Tegra20 and Tegra30, there is no dynamic ramping at all, and on Tegra114, Tegra124 and Tegra132, only PLLX and PLLC support dynamic ramping, so we can go ahead and remove the specialized pllm_ops. Signed-off-by: Danny Huang <dahuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-20clk: tegra: pll: Fix _pll_ramp_calc_pll logic and _calc_dynamic_ramp_rateRhyland Klein1-110/+117
This removes the conversion from pdiv to hw, which is already taken care of by _get_table_rate before this code is run. This avoids incorrectly converting pdiv to hw twice and getting the wrong hw value. Also set the input_rate in the freq cfg in _calc_dynamic_ramp_rate while setting all the other fields. In order to prevent regressions on earlier SoC generations, all of the frequency tables need to be updated so that they contain the actual divider values. If they contain hardware values these would be converted to hardware values again, yielding the wrong value. Signed-off-by: Rhyland Klein <rklein@nvidia.com> [treding@nvidia.com: fix regressions on earlier SoC generations] Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-20clk: tegra: pll: Don't unconditionally set LOCK flagsRhyland Klein1-9/+15
SoC specific drivers should define the appropriate flags for each PLL rather than relying on the registration functions to automatically set flags on their behalf. This will properly allow for changes between SoC generations where flags might be different and allow sharing the same logic functions. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-20clk: tegra: Constify pdiv-to-hw mappingsThierry Reding1-1/+1
This is static data that is never modified, so make it const. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-18clk: tegra: Format tables consistentlyThierry Reding1-189/+189
Use spaces around { and } and pad values so that the cells are properly aligned. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-18clk: tegra: Miscellaneous coding style cleanupsThierry Reding1-10/+5
Use unsigned int for loop variables that can never become negative and remove a couple of gratuitous blank lines. Also use single spaces around operators and use a single space instead of a tab to separate comments from code. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-11-18clk: tegra: Fix 26 MHz oscillator frequencyThierry Reding1-1/+1
The OSC_FREQ field of the OSC_CTRL register uses the value 12 for an oscillator frequency of 26 MHz, not 260 MHz. This isn't really critical because I don't think boards with such an oscillator have ever existed, much less been supported upstream. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-10-20clk: tegra: Modify tegra_audio_clk_init to accept more pllsRhyland Klein1-1/+7
tegra_audio_clk_init was written expecting a single PLL to be passed in directly. Change this to accept an array which will allow for supporting multiple plls and specifying specific data about them, like their parent, which may change over time. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-07-20clk: tegra: Properly include clk.hStephen Boyd1-1/+0
Clock provider drivers generally shouldn't include clk.h because it's the consumer API. Only include clk.h in files that are using it. Also add in a clkdev.h include that was missing in a file using clkdev APIs. Cc: Peter De Schrijver <pdeschrijver@nvidia.com> Cc: Thierry Reding <treding@nvidia.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-05-13clk: tegra: Fix hda2codec_2x clock name for Tegra30Marcel Ziswiler1-1/+1
The HDA to codec clock is named hda2codec_2x, so use the proper name in the clock table. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-04-10clk: tegra: Model oscillator as clockThierry Reding1-1/+2
Currently the Tegra clock driver simplifies the clock tree somewhat by taking advantage of the fact that clk_m runs at the same frequency as the oscillator. While that's true on all currently supported SoCs, it does not apply to Tegra210 anymore. On Tegra210 clk_m is typically divided down from the oscillator frequency. To support that setup, add a separate clock for the oscillator that both clk_m and pll_ref derive from. Modify the tegra_osc_clk_init() function to take an additional divider parameter for clk_m. Existing SoCs always pass in 1, whereas Tegra210 will read the divider from a register in the clock & reset controller. Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-04-10clk: tegra: Use consistent indentationThierry Reding1-10/+10
Some of the .dev_id entries in the devclks table were oddly indented. Make them consistent with the rest of the table. Reviewed-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-11-26clk: tegra: Implement memory-controller clockThierry Reding1-1/+6
The memory controller clock runs either at half or the same frequency as the EMC clock. Reviewed-By: Tomeu Vizoso <tomeu.vizoso@collabora.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: Convert PMC to a driverThierry Reding1-1/+1
This commit converts the PMC support code to a platform driver. Because the boot process needs to call into this driver very early, also set up a minimal environment via an early initcall. Signed-off-by: Thierry Reding <treding@nvidia.com>
2014-07-17ARM: tegra: Move includes to include/soc/tegraThierry Reding1-1/+4
In order to not clutter the include/linux directory with SoC specific headers, move the Tegra-specific headers out into a separate directory. Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-12-12clk: tegra: remove bogus PCIE_XCLKStephen Warren1-7/+0
The "pcie_xclk" clock is not actually a clock at all, but rather a reset domain. Now that the custom Tegra module reset API has been removed, we can remove the definition of any "clocks" that existed solely to support it. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-12-12clk: tegra: implement a reset driverStephen Warren1-1/+2
The Tegra CAR module implements both a clock and reset controller. So far, the driver exposes the clock feature via the common clock API and the reset feature using a custom API. This patch adds an implementation of the common reset framework API (include/linux/reset*.h). The legacy reset implementation will be removed once all drivers have been converted. Signed-off-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Thierry Reding <treding@nvidia.com> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: add FUSE clock deviceAlexandre Courbot1-1/+1
This clock is needed to ensure the FUSE registers can be accessed without freezing the system. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2013-11-26clk: tegra: Properly setup PWM clock on Tegra30Thierry Reding1-1/+3
The clock for the PWM controller is slightly different from other peripheral clocks on Tegra30. The clock source mux field start at bit position 28 rather than 30. Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-11-26clk: tegra: Initialize secondary gr3d clock on Tegra30Thierry Reding1-0/+1
There are two GPUs on Tegra30 and each of them uses a separate clock, so the secondary clock needs to be initialized in order for the gr3d module to work properly. Signed-off-by: Thierry Reding <treding@nvidia.com>
2013-11-26clk: tegra: move tegra30 to common infraPeter De Schrijver1-895/+403
Move tegra30 to common tegra clock infrastructure. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: move periph clocks to common filePeter De Schrijver1-2/+2
Introduce a new file for peripheral clocks common between several Tegra SoCs and move Tegra114 to this new infrastructure. Also PLLP and the PLLP_OUT clocks will be initialized here. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: move fields to tegra_clk_pll_paramsPeter De Schrijver1-27/+35
Move some fields related to the PLL HW description to the tegra_clk_pll_params. This allows some PLL code to be moved to common files later. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: common periph_clk_enb_refcnt and clksPeter De Schrijver1-28/+11
This patch makes periph_clk_enb_refcnt a global array, dynamically allocated at boottime. It simplifies the macros somewhat and allows clocks common to several Tegra SoCs to be defined in a separate files. Also the clks array becomes global and dynamically allocated which allows the DT registration to be moved to a generic funcion. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: simplify periph clock dataPeter De Schrijver1-201/+116
This patch determines the register bank for clock enable/disable and reset based on the clock ID instead of hardcoding it in the tables describing the clocks. This results in less data to be maintained in the tables, making the code easier to understand. The full benefit of the change will be realized once also other clocktypes will be table based. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-11-26clk: tegra: add TEGRA_DIVIDER_ROUND_UP for periph clksPeter De Schrijver1-9/+10
Perform upwards rounding when calculating dividers for periph clks on Tegra30 and Tegra114. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
2013-08-29clk: tegra30: Don't wait for PLL_U lock bitTuomas Tynkkynen1-1/+1
The lock bit on PLL_U does not seem to be working correctly and sometimes never gets set when waiting for the PLL to come up. Remove the TEGRA_PLL_USE_LOCK flag to use a constant delay. Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-19clk: add CLK_SET_RATE_NO_REPARENT flagJames Hogan1-11/+22
Add a CLK_SET_RATE_NO_REPARENT clock flag, which will prevent muxes being reparented during clk_set_rate. To avoid breaking existing platforms, all callers of clk_register_mux() are adjusted to pass the new flag. Platform maintainers are encouraged to remove the flag if they wish to allow mux reparenting on set_rate. Signed-off-by: James Hogan <james.hogan@imgtec.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Cc: Mike Turquette <mturquette@linaro.org> Cc: Russell King <linux@arm.linux.org.uk> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Cc: Chao Xie <xiechao.mail@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Emilio López" <emilio@elopez.com.ar> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Prashant Gaikwad <pgaikwad@nvidia.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Peter De Schrijver <pdeschrijver@nvidia.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Andrew Chew <achew@nvidia.com> Cc: Doug Anderson <dianders@chromium.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Paul Walmsley <pwalmsley@nvidia.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Cc: Thomas Abraham <thomas.abraham@linaro.org> Cc: Tomasz Figa <t.figa@samsung.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-samsung-soc@vger.kernel.org Cc: spear-devel@list.st.com Cc: linux-tegra@vger.kernel.org Tested-by: Haojian Zhuang <haojian.zhuang@gmail.com> Acked-by: Stephen Warren <swarren@nvidia.com> [tegra] Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> [sunxi] Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com> [Zynq] Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-09clk: tegra30: Fix incorrect placement of __initdataSachin Kamat1-1/+1
__initdata should be placed between the variable name and equal sign for the variable to be placed in the intended section. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-07-03Merge tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linuxLinus Torvalds1-3/+22
Pull clock framework updates from Mike Turquette: "The common clock framework changes for 3.11 include new clock drivers across several different platforms and architectures, fixes to existing drivers, a MAINTAINERS file fix and improvements to the basic clock types that allow them to be of use to more platforms than before. Only a few fixes to the core framework are included with most all of the changes landing in the various clock drivers themselves." * tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux: (55 commits) clk: tegra: fix ifdef for tegra_periph_reset_assert inline clk: tegra: provide tegra_periph_reset_assert alternative clk: exynos4: Fix clock aliases for cpufreq related clocks clk: samsung: Add MUX_FA macro to pass flag and alias clk: add support for Rockchip gate clocks clk: vexpress: Make the clock drivers directly available for arm64 clk: vexpress: Use full node name to identify individual clocks clk: tegra: T114: add DFLL DVCO reset control clk: tegra: T114: add DFLL source clocks clk: tegra: T114: add FCPU clock shaper programming, needed by the DFLL clk: gate: add CLK_GATE_HIWORD_MASK clk: divider: add CLK_DIVIDER_HIWORD_MASK flag clk: mux: add CLK_MUX_HIWORD_MASK clk: Always notify whole subtree when reparenting MAINTAINERS: make drivers/clk entry match subdirs clk: honor CLK_GET_RATE_NOCACHE in clk_set_rate clk: use clk_get_rate() for debugfs clk: tegra: Use override bits when needed clk: tegra: override bits for Tegra30 PLLM clk: tegra: override bits for Tegra114 PLLM ...
2013-06-16ARM: tegra30: clocks: Fix pciex clock registrationJay Agarwal1-5/+6
Registering pciex as peripheral clock instead of fixed clock as tegra_perih_reset_assert(deassert) api of this clock api gives warning and ultimately does not succeed to assert(deassert) Signed-off-by: Jay Agarwal <jagarwal@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-06-12clk: tegra: override bits for Tegra30 PLLMPeter De Schrijver1-0/+18
Define override bits for Tegra30 PLLM. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Tested-by: Stephen Warren <swarren@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-05-31clk: tegra: Use common of_clk_init functionPrashant Gaikwad1-1/+2
Use common of_clk_init() function for clocks initialization. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-05-31clk: tegra: fix clk_out parents listPrashant Gaikwad1-2/+2
Number of parents for clk_out_2 and clk_out_3 was incorrectly set to clk_out1_parents. Even though it did not break anything since the size was same better to fix. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Reviewed-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-05-04Merge tag 'drivers-for-linus' of ↵Linus Torvalds1-131/+145
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver changes from Olof Johansson: "This is a rather large set of patches for device drivers that for one reason or another the subsystem maintainer preferred to get merged through the arm-soc tree. There are both new drivers as well as existing drivers that are getting converted from platform-specific code into standalone drivers using the appropriate subsystem specific interfaces. In particular, we can now have pinctrl, clk, clksource and irqchip drivers in one file per driver, without the need to call into platform specific interface, or to get called from platform specific code, as long as all information about the hardware is provided through a device tree. Most of the drivers we touch this time are for clocksource. Since now most of them are part of drivers/clocksource, I expect that we won't have to touch these again from arm-soc and can let the clocksource maintainers take care of these in the future. Another larger part of this series is specific to the exynos platform, which is seeing some significant effort in upstreaming and modernization of its device drivers this time around, which unfortunately is also the cause for the churn and a lot of the merge conflicts. There is one new subsystem that gets merged as part of this series: the reset controller interface, which is a very simple interface for taking devices on the SoC out of reset or back into reset. Patches to use this interface on i.MX follow later in this merge window, and we are going to have other platforms (at least tegra and sirf) get converted in 3.11. This will let us get rid of platform specific callbacks in a number of platform independent device drivers." * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (256 commits) irqchip: s3c24xx: add missing __init annotations ARM: dts: Disable the RTC by default on exynos5 clk: exynos5250: Fix parent clock for sclk_mmc{0,1,2,3} ARM: exynos: restore mach/regs-clock.h for exynos5 clocksource: exynos_mct: fix build error on non-DT pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register() irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure reset: NULL deref on allocation failure reset: Add reset controller API dt: describe base reset signal binding ARM: EXYNOS: Add arm-pmu DT binding for exynos421x ARM: EXYNOS: Add arm-pmu DT binding for exynos5250 ARM: EXYNOS: Enable PMUs for exynos4 irqchip: exynos-combiner: Correct combined IRQs for exynos4 irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq ARM: EXYNOS: fix compilation error introduced due to common clock migration clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3} clk: exynos4: export clocks required for fimc-is clk: samsung: Fix compilation error clk: tegra: fix enum tegra114_clk to match binding ...
2013-04-09Merge tag 'tegra-for-3.10-multiplatform' of ↵Arnd Bergmann1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/multiplatform From Stephen Warren <swarren@wwwdotorg.org>: ARM: tegra: multi-platform conversion This branch converts Tegra to support multi-platform/single-zImage. One header is made accessible to drivers. The earlyprintk implementation is moved to the multi-platform location. Some Kconfig changes are made to enable multi-platform. Some dead files are deleted. The APIs exposed in the now-global tegra-powergate.h should be replaced with standard reset and power domain APIs in the future. This branch is based on (part of) the previous soc pull request. * tag 'tegra-for-3.10-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra: ARM: tegra: convert to multi-platform ARM: tegra: move <mach/powergate.h> to <linux/tegra-powergate.h> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2013-04-05clk: tegra: Add flags to tegra_clk_periph()Peter De Schrijver1-1/+1
We will need some tegra peripheral clocks with the CLK_IGNORE_UNUSED flag, most notably mselect, which is a bridge between AXI and most peripherals. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: move from a lock bit idx to a lock maskPeter De Schrijver1-11/+11
PLLC2 and PLLC3 on Tegra114 have separate phaselock and frequencylock bits. So switch to a lock mask to be able to test both at the same time. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: Add PLL post divider tablePeter De Schrijver1-0/+7
Some PLLs in Tegra114 don't use a power of 2 mapping for the post divider. Introduce a table based approach and switch PLLU to it. Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: Refactor PLL programming codePeter De Schrijver1-117/+117
Refactor the PLL programming code to make it useable by the new PLL types introduced by Tegra114. The following changes were done: * Split programming the PLL into updating m,n,p and updating cpcon * Move locking from _update_pll_cpcon() to clk_pll_set_rate() * Introduce _get_pll_mnp() helper * Move check for identical m,n,p values to clk_pll_set_rate() * struct tegra_clk_pll_freq_table will always contain the values as defined by the hardware. * Simplify the arguments to clk_pll_wait_for_lock() * Split _tegra_clk_register_pll() Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: defer application of init tableStephen Warren1-1/+6
The Tegra clock driver is initialized during the ARM machine descriptor's .init_irq() hook. It can't be initialized earlier, since dynamic memory usage is required. It can't be initialized later, since the .init_timer() hook needs the clocks initialized. However, at this time, udelay() doesn't work. The Tegra clock initialization table may enable some PLLs. Enabling a PLL may require usage of udelay(). Hence, this can't happen right when the clock driver is initialized. To solve this, separate the clock driver initialization from the clock table processing, so they can execute at separate times. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: Fix cdev1 and cdev2 IDsPrashant Gaikwad1-1/+1
Correct IDs for cdev1 and cdev2 are 94 and 93 respectively. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> [swarren: split into separate driver and device-tree patches] Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-04-05clk: tegra: Make gr2d and gr3d clocks children of pll_cThierry Reding1-0/+2
By default these clocks are children of pll_m, but in downstream kernels they are reparented to pll_c. While at it, decrease their frequencies to 300 MHz because the defaults aren't in the specified range. gr2d can reportedly run at much higher frequencies, but 300 MHz works and is a more conservative default. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-03-30ARM: tegra: move <mach/powergate.h> to <linux/tegra-powergate.h>Stephen Warren1-2/+1
This is required so that code such as Tegra's PCIe and clock drivers can still access this header file once Tegra is converted to multiplatform, and <mach/> no longer exists. Signed-off-by: Stephen Warren <swarren@nvidia.com>
2013-03-05clk: Tegra: Remove duplicate smp_twd clockPrashant Gaikwad1-1/+0
Remove duplicate smp_twd clocks as these clocks are accessed using DT now. Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2013-02-13clk: tegra: initialise parent of uart clocksLaxman Dewangan1-1/+5
Initialise the parent of UARTs to PLLP and disabling clock by default. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Stephen Warren <swarren@nvidia.com>