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* Merge tag 'docs-4.5' of git://git.lwn.net/linuxLinus Torvalds2016-01-1725-73/+85
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation updates from Jon Corbet: "A relatively boring cycle in the docs tree. There's a few kernel-doc fixes and various document tweaks. One patch reaches out of the documentation subtree to fix a comment in init/do_mounts_rd.c. There didn't seem to be anybody more appropriate to take that one, so I accepted it" * tag 'docs-4.5' of git://git.lwn.net/linux: (29 commits) thermal: add description for integral_cutoff unit Documentation: update libhugetlbfs site url Documentation: Explain pci=conf1,conf2 more verbosely DMA-API: fix confusing sentence in Documentation/DMA-API.txt Documentation: translations: update linux cross reference link Documentation: fix typo in CodingStyle init, Documentation: Remove ramdisk_blocksize mentions Documentation-getdelays: Apply a recommendation from "checkpatch.pl" in main() Documentation: HOWTO: update versions from 3.x to 4.x Documentation: remove outdated references from translations Doc: treewide: Fix grammar "a" to "an" Documentation: cpu-hotplug: Fix sysfs mount instructions can-doc: Add hint about getting timestamps Fix CFQ I/O scheduler parameter name in documentation Documentation: arm: remove dead links from Marvell Berlin docs Documentation: HOWTO: update code cross reference link Doc: Docbook/iio: Fix typo in iio.tmpl DocBook: make index.html generation less verbose by default DocBook: Cleanup: remove an unused $(call) line DocBook: Add a help message for DOCBOOKS env var ...
| * thermal: add description for integral_cutoff unitLeo Yan2016-01-141-0/+1
| | | | | | | | | | | | | | | | | | Add more explicitly description for unit of integral_cutoff which used by power allocator governor. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: update libhugetlbfs site urlSeongJae Park2016-01-141-1/+1
| | | | | | | | | | | | | | | | | | The site for libhugetlbfs has moved from sourceforge to github. This commit updates the old url. Signed-off-by: SeongJae Park <sj38.park@gmail.com> Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: Explain pci=conf1,conf2 more verboselyBorislav Petkov2016-01-141-4/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | People complained that setting the PCI config space access mechanism through "pci=conf1" or "pci=conf2" on the command line is not really documented. Yeah, can you blame them? Look at what we have now. So try to improve the situation a bit by explaining what those "conf1" and "conf2" things actually mean. See http://wiki.osdev.org/PCI for more info. Suggested-by: Eric Morton <Eric.Morton@amd.com> Signed-off-by: Borislav Petkov <bp@suse.de> [jc: Added the above URL to the document too] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * DMA-API: fix confusing sentence in Documentation/DMA-API.txtMasahiro Yamada2016-01-121-1/+1
| | | | | | | | | | | | | | | | Change the phrase "handed off to the driver" to "handed off to the device" as in the paragraph below. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: translations: update linux cross reference linkSeongJae Park2016-01-123-3/+3
| | | | | | | | | | | | | | | | | | | | The old link to source code cross reference does not work now. Though the link has updated by commit 1d12554f0abbc7d17dce8d1b7b25f4e27555e6d7 ("Documentation: HOWTO: update code cross reference link"), there are few obsolete links yet. This commit update them. Signed-off-by: SeongJae Park <sj38.park@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: fix typo in CodingStyleManuel Pégourié-Gonnard2016-01-121-1/+1
| | | | | | | | | | | | | | | | Simple typo: "it" for "is". Signed-off-by: Manuel Pégourié-Gonnard <mpg@elzevir.fr> Cc: Trivial Patch Monkey <trivial@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * init, Documentation: Remove ramdisk_blocksize mentionsRobert Elliott2015-12-262-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The brd driver has never supported the ramdisk_blocksize kernel parameter that was in the rd driver it replaced, so remove mention of this parameter from comments and Documentation. Commit 9db5579be4bb ("rewrite rd") replaced rd with brd, keeping a brd_blocksize variable in struct brd_device but never using it. Commit a2cba2913c76 ("brd: get rid of unused members from struct brd_device") removed the unused variable. Commit f5abc8e75815 ("Documentation/blockdev/ramdisk.txt: updates") removed mentions of ramdisk_blocksize from that file. Signed-off-by: Robert Elliott <elliott@hpe.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation-getdelays: Apply a recommendation from "checkpatch.pl" in main()Markus Elfring2015-12-241-1/+2
| | | | | | | | | | | | | | | | | | The script "checkpatch.pl" pointed out that assignments should usually not be performed within condition checks. Thus move the assignment for the variable "nl_sd" to a separate statement. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: HOWTO: update versions from 3.x to 4.xSeongJae Park2015-12-241-13/+13
| | | | | | | | | | | | | | | | | | | | | | Versions in HOWTO was updated to 4.x by commit e4144fe5d47c91c92d36cdbd5f31ed8d6e3a57ab ("docs: update HOWTO for 3.x -> 4.x versioning") but not applied to Korean translation. This commit apply the change. Signed-off-by: SeongJae Park <sj38.park@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: remove outdated references from translationsSeongJae Park2015-12-242-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | Outdated link to linux-next wiki was removed by commit ace80793d16fb076381ba0e232d42295d98dae99 ("Documentation: remove outdated references to the linux-next wiki"). However, the change was not applied to translations. This commit apply the change to translations. Signed-off-by: SeongJae Park <sj38.park@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Doc: treewide: Fix grammar "a" to "an"Masanari Iida2015-12-102-2/+2
| | | | | | | | | | | | | | This patch fix some grammar mistake. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: cpu-hotplug: Fix sysfs mount instructionsSoren Brinkmann2015-12-101-1/+1
| | | | | | | | | | | | | | | | | | The instructions for mounting sysfs are inconsistent in instructing to create the directory '/sysfs' but then mounting sysfs to /sys. Also, indentation is slightly off. Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * can-doc: Add hint about getting timestampsStefan Tatschner2015-12-101-0/+9
| | | | | | | | | | | | | | | | | | | | This patch adds a hint about how to get timestamps of received CAN frames with ioctl(2). This hint has been applied to the former SocketCAN Documentation, but it got lost during mainlining the first bits and pieces to linux kernel. Signed-off-by: Stefan Tatschner <rumpelsepp@sevenbyte.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Fix CFQ I/O scheduler parameter name in documentationLibor Pechacek2015-12-101-8/+7
| | | | | | | | | | | | | | As seen in block/cfq-iosched.c, the parameter name is low_latency. Signed-off-by: Libor Pechacek <lpechacek@suse.cz> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: arm: remove dead links from Marvell Berlin docsTom Hebb2015-12-101-3/+0
| | | | | | | | | | | | | | | | The BG2 and BG2Q are no longer listed on Marvell's site, so the links in the README go nowhere. The BG2Q's product brief has also been removed. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: HOWTO: update code cross reference linkDoug Smythies2015-12-101-1/+1
| | | | | | | | | | | | | | | | The source code cross reference link does not work. Update the link to a site that works. Signed-off-by: Doug Smythies <dsmythies@telus.net> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Doc: Docbook/iio: Fix typo in iio.tmplMasanari Iida2015-11-211-1/+1
| | | | | | | | | | | | | | | | This patch fix a spelling typo in iio.tmpl. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * DocBook: make index.html generation less verbose by defaultMauro Carvalho Chehab2015-11-211-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When make htmldocs is called on non-verbose mode, it will still be verbose with index.html generation for no good reason, printing: rm -rf Documentation/DocBook/index.html; echo '<h1>Linux Kernel HTML Documentation</h1>' >> Documentation/DocBook/index.html && echo '<h2>Kernel Version: 4.4.0-rc1</h2>' >> Documentation/DocBook/index.html && cat Documentation/DocBook/iio.html >> Documentation/DocBook/index.html Instead, use the standard non-verbose mode, using: HTML Documentation/DocBook/index.html if not called with V=1. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * DocBook: Cleanup: remove an unused $(call) lineMauro Carvalho Chehab2015-11-211-1/+0
| | | | | | | | | | | | | | | | | | There's no build_images function to call. So remove it. This is just a cleanup patch, with doesn't affect the build. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * DocBook: Add a help message for DOCBOOKS env varMauro Carvalho Chehab2015-11-211-0/+4
| | | | | | | | | | | | | | | | | | Sometimes, it is needed to compile only a subset of the possible DocBooks. This is supported by the building system, but it is not docummented. Add a documentation for it. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * stable_kernel_rules.txt: Remove extra space after Cc:Richard Weinberger2015-11-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Fixes the checkpatch.pl warning: "WARNING: Use a single space after Cc:" Very lazy hackers just copy&paste the stable tag from this document. As it contains an extra space, checkpatch.pl will not like the resulting patch... Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Doc: ioctl: Fix typos in Documentation/ioctlMasanari Iida2015-11-211-3/+3
| | | | | | | | | | | | | | | | This patch fix some spelling typos in Documentation/ioctl. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Doc: gpio: Fix typos in Documentation/gpioMasanari Iida2015-11-213-7/+7
| | | | | | | | | | | | | | | | This patch fix some spelling typos found in Documentation/gpio. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: arm: remove hyphen from BG2Q in Marvell Berlin docsTom Hebb2015-11-211-1/+1
| | | | | | | | | | | | | | | | | | The chip's design name isn't hyphenated anywhere else, and none of the other names in the same document are hyphenated. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: arm: add Marvell Armada 1500 Mini Plus to SoC listTom Hebb2015-11-211-1/+5
| | | | | | | | | | | | | | | | | | Add known information about the Marvell BG2CDP SoC that's used in the Google Chromecast 2015 and Kinoma HD devices. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * Documentation: arm: update homepage URLs for Marvell Berlin SoCsTom Hebb2015-11-211-7/+7
| | | | | | | | | | | | | | | | | | | | Marvell has renamed their Berlin family from "Digital Entertainment" to "Multimedia Solutions." There aren't proper redirects set up for device-specific pages, so update the URLs accordingly. Signed-off-by: Thomas Hebb <tommyhebb@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * kernel-doc: Fix parsing of DECLARE_BITMAP in structConchúr Navid2015-11-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some documented structures in the kernel use DECLARE_BITMAP to create arrays of unsigned longs to store information using the bitmap functions. These have to be replaced with a parsable version for kernel-doc. For example a simple input like /** * struct something - some test * @members: active members */ struct something { DECLARE_BITMAP(members, MAX_MEMBERS); }; resulted in parsing warnings like warning: No description found for parameter 'MAX_MEMBERS)' warning: Excess struct/union/enum/typedef member 'members' description in 'something' Signed-off-by: Conchúr Navid <conchur@web.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * kernel-doc: Strip #ifdef/#endif in enumsConchúr Navid2015-11-211-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some enumerations in the kernel headers use #ifdef to reduce their size based on the the configuration. These lines have to be stripped to avoid parsing problems. For example a simple input like /** * enum flags - test flags * @flag1: first flag * @flag2: second flag */ enum flags { flag1 = BIT(0), #ifdef SECOND_FLAG flag2 = BIT(1), #endif }; resulted in parsing warnings like warning: Enum value '#ifdef SECOND_FLAG;flag2 = BIT(1)' not described in enum 'flags' warning: Enum value '#endif;' not described in enum 'flags' Signed-off-by: Conchúr Navid <conchur@web.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
| * kernel-doc: Fix stripping of #define in enumsConchúr Navid2015-11-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The regex to strip single line #define's in enumerations depends on the fact that the defines are still stored on separate lines. But the surrounding code already removed newlines and replaced them with semicolons. For example a simple input like /** * enum flags - test flags * @flag1: first flag * @flag2: second flag * @flag3: third flag * @flag4: fourth flag */ enum flags { flag1 = BIT(0), flag2 = BIT(1), #define flags_small (flag1 | flag2) flag3 = BIT(2), flag4 = BIT(3), #define flags_big (flag2 | flag3) }; resulted in parsing warnings like warning: Enum value '#define flags_small (flag1 | flag2);flag3 = BIT(2)' not described in enum 'flags' warning: Enum value '#define flags_big (flag2 | flag3);' not described in enum 'flags' Signed-off-by: Conchúr Navid <conchur@web.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | Merge tag 'clk-for-linus-4.5' of ↵Linus Torvalds2016-01-16119-1351/+20637
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk framework updates from Michael Turquette: "The clk framework and driver changes for 4.5 look pretty typical. The bulk of the changes are to clk controller drivers, though some improvements to the core and some re-usable blocks/templates also received some love. In this past cycle the clk maintainers developed a good workflow for handling the common case of patch submissions containing a new drivers, new shared Device Tree header and a new Device Tree binding description. This requires coordination with the Device Tree maintainers and with the architecture maintainers (typically the arm-soc tree in our case). This explains the increase in changes to include/dt-bindings/... and to Documentation/devicetree/bindings/clock/... coming from the clk tree. The same commits can be expected to come through those trees on occasion, through the use of shared, immutable branches" * tag 'clk-for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (125 commits) clk: remove duplicated COMMON_CLK_NXP record from clk/Kconfig clk: fix clk-gpio.c with optional clock= DT property clk: rockchip: fix section mismatches with new child-clocks clk: gpio: handle error codes for of_clk_get_parent_count() clk: gpio: fix memory leak clk: shmobile: r8a7795: Add SATA0 clock clk: bcm2835: Add PWM clock support clk: bcm2835: Support for clock parent selection clk: bcm2835: add a round up ability to the clock divisor clk: lpc32xx: add common clock framework driver clk: lpc18xx: add NXP specific COMMON_CLK_NXP configuration symbol dt-bindings: clock: add NXP LPC32xx clock list for consumers dt-bindings: clock: add description of LPC32xx USB clock controller dt-bindings: clock: add description of LPC32xx clock controller clk: rockchip: rk3036: include downstream muxes into fractional dividers clk: add flag for clocks that need to be enabled on rate changes clk: rockchip: Allow the RK3288 SPDIF clocks to change their parent clk: rockchip: include downstream muxes into fractional dividers clk: rockchip: handle mux dependency of fractional dividers clk: bcm2835: Add a driver for the auxiliary peripheral clock gates. ...
| * | clk: remove duplicated COMMON_CLK_NXP record from clk/KconfigVladimir Zapolskiy2016-01-141-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | Presumably the second COMMON_CLK_NXP config option in drivers/clk/Kconfig appeared after a merge conflict resolution, remove the wrong record of two. Signed-off-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
| * | Merge tag 'tegra-for-4.5-clk' of ↵Michael Turquette2016-01-0513-928/+5437
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into clk-next clk: tegra: Changes for v4.5-rc1 This set of changes adds support for the Tegra210 SoC and contains a couple fixes and cleanups.
| | * | clk: tegra: Read correct IDDQ register in PLL_SS registrationBill Huang2015-12-171-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes a bug in tegra_clk_register_pllss() which mistakenly assume the IDDQ register is the PLL base address. Signed-off-by: Bill Huang <bilhuang@nvidia.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: Fix WARN_ON in PLL_RE registrationBill Huang2015-12-171-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes two things. - Read the correct IDDQ register - Check the correct IDDQ bit position Signed-off-by: Bill Huang <bilhuang@nvidia.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Fix issues with rates for VCO PLLsAndrew Bresticker2015-12-171-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Without this change clk_get_rate would return the final output rather than the VCO output as it would factor in the pdiv when it shouldn't. This will cause problems for all dividers in the subtree of the VCO PLL. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: Add support for Tegra210 clocksRhyland Klein2015-12-175-0/+2868
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement clock support for Tegra210. Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: Add Super Gen5 LogicBill Huang2015-12-172-13/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Super clock divider control and clock source mux of Tegra210 has changed a little against prior SoCs, this patch adds Gen5 logic to address those differences. Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add logic for SSBill Huang2015-12-172-1/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add some logic for Spread Spectrum control. It is used in conjuncture with SDM fractional dividers. SSC has to be disabled when we configure the divider settings. Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add dyn_ramp callbackRhyland Klein2015-12-172-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a callback to the pll_params for custom dynamic ramping functions which can be specified per PLL. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add Set_default logicBill Huang2015-12-172-11/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add logic which (if specified for a pll) can verify that a PLL is set to the proper default value and if not can set it. This can be specified per PLL as each will have different default values. Based on original work by Aleksandr Frid <afrid@nvidia.com> Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Adjust vco_min if SDM presentBill Huang2015-12-172-0/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code makes use of the SDM fractional divider if present to constrain the allowable programming range of the PLL divider register bitfields to take advantage of higher frequency granularity that can be induced by the SDM divider. Based on original work by Aleksandr Frid <afrid@nvidia.com> Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add support for PLLMB for Tegra210Rhyland Klein2015-12-172-5/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tegra210 SoC's have 2 PLLs for memory usage. Add plumbing to register and handle PLLMB. PLLMB is used to allow switching between 2 PLLM's without having to use and intermediate backup PLL, as we need to lock the PLL before we can switch to it. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add specialized logic for Tegra210Rhyland Klein2015-12-172-2/+346
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Tegra210 SoC's, the logic to enable several of the plls is different from previous generations. Therefore, add registration functions specific to Tegra210 which will handle them appropriately. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Update PLLM handlingDanny Huang2015-11-203-51/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | clk: tegra: pll: Fix _pll_ramp_calc_pll logic and _calc_dynamic_ramp_rateRhyland Klein2015-11-205-304/+379
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
| | * | clk: tegra: pll: Add code to handle if resets are supported by PLLBill Huang2015-11-202-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If a PLL has a reset_reg specified, properly handle that in the enable/disable logic paths. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Bill Huang <bilhuang@nvidia.com> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add logic for out-of-table rates for T210Rhyland Klein2015-11-202-2/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For Tegra210, the logic to calculate out-of-table rates is different from previous generations. Add callbacks that can be overridden to allow for different ways of calculating rates. Default to _cal_rate when not specified. This patch also includes a new flag which is used to set which method of fixed_mdiv calculation is used. The new method for calculating the fixed divider value for M can be more accurate especially when fractional dividers are in play. This allows for older chipsets to use the existing logic and new generations to use a newer version which may work better for them. Based on original work by Aleksandr Frid <afrid@nvidia.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Add logic for handling SDM dataRhyland Klein2015-11-202-2/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds logic for taking SDM_DIN (Sigma Delta Modulator) setting into the equation to calculate the effective N value for PLL which supports fractional divider. The effective N = NDIV + 1/2 + SDM_DIN/2^13, where NDIV is the integer feedback divider. Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Rhyland Klein <rklein@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
| | * | clk: tegra: pll: Don't unconditionally set LOCK flagsRhyland Klein2015-11-205-45/+55
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-24 23:45:28 +0100