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path: root/drivers/clk/mvebu
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2014-03-18Merge tag 'clk-mvebu-3xx-3.15-2' of git://git.infradead.org/linux-mvebu into ↵Mike Turquette
clk-next-mvebu clock: mvebu new SoC changes for v3.15 (incremental pull #2) - mvebu (Armada 375) - fix ratio register offest - mvebu (Armada 380) - expand core divider clock driver to support 380 SoC (enables nand support)
2014-03-13clk: mvebu: Support Armada 380 SoC on the core divider clockEzequiel Garcia
This commit adds support for the Core Divider clocks of the Armada 380 SoCs. Similarly to Armada 370 and XP, the Core Divider clocks of the 380 have gate capabilities. The only difference is the register layout. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Link: https://lkml.kernel.org/r/1394742273-5113-2-git-send-email-ezequiel.garcia@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-03-13clk: mvebu: Fix ratio register offset on A375 SoCEzequiel Garcia
This commit fixes the ratio register offset which is 0x4, as per the Armada 375 SoC specification. Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Link: https://lkml.kernel.org/r/1394638901-13368-2-git-send-email-ezequiel.garcia@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-24Merge branch 'clk-fixes' into clk-nextMike Turquette
2014-02-17clk: mvebu: add clock support for Armada 380/385Gregory CLEMENT
Add the clock support for the new SoCs Armada 380 and Armada 385: core clocks and gating clocks. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-17clk: mvebu: add clock support for Armada 375Gregory CLEMENT
Add the clock support for the new SoC Armada 375: core clocks and gating clocks. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-17clk: mvebu: add Armada 375 support to the corediv clock driverThomas Petazzoni
This commit adds support for the Core Divider clocks of the Armada 375. Compared to Armada 370 and XP the Core Divider clocks of the 375 cannot be gated: only their ratio can be changed. This is reflected by the fact that the enable, disable and is_enabled clock operations are not defined, and that the enable_bit_offset field is also undefined. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-17clk: mvebu: refactor corediv driver to support more SoCThomas Petazzoni
This commit refactors the corediv clock driver so that it is capable of handling various SOCs that have slightly different corediv clock registers and capabilities. It introduces a clk_corediv_soc_desc structure that encapsulates all the SoC specific details. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-17clk: mvebu: add a little bit of documentation about data structuresThomas Petazzoni
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-17clk: mvebu: do not copy the contents of clk_corediv_descThomas Petazzoni
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-06clk: mvebu: kirkwood: maintain clock init orderSebastian Hesselbarth
Init order of CLK_OF_DECLARE'd drivers depends on compile order. Unfortunately, clk_of_init does not allow drivers to return errors, e.g. -EPROBE_DEFER if parent clocks have not been registered, yet. To avoid init order woes for MVEBU clock drivers, we take care of proper init order ourselves. This patch joins core-clk and gating-clk init to maintain proper init order. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-06clk: mvebu: dove: maintain clock init orderSebastian Hesselbarth
Init order of CLK_OF_DECLARE'd drivers depends on compile order. Unfortunately, clk_of_init does not allow drivers to return errors, e.g. -EPROBE_DEFER if parent clocks have not been registered, yet. To avoid init order woes for MVEBU clock drivers, we take care of proper init order ourselves. This patch joins core-clk and gating-clk init to maintain proper init order. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-06clk: mvebu: armada-xp: maintain clock init orderSebastian Hesselbarth
Init order of CLK_OF_DECLARE'd drivers depends on compile order. Unfortunately, clk_of_init does not allow drivers to return errors, e.g. -EPROBE_DEFER if parent clocks have not been registered, yet. To avoid init order woes for MVEBU clock drivers, we take care of proper init order ourselves. This patch joins core-clk and gating-clk init to maintain proper init order. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-06clk: mvebu: armada-370: maintain clock init orderSebastian Hesselbarth
Init order of CLK_OF_DECLARE'd drivers depends on compile order. Unfortunately, clk_of_init does not allow drivers to return errors, e.g. -EPROBE_DEFER if parent clocks have not been registered, yet. To avoid init order woes for MVEBU clock drivers, we take care of proper init order ourselves. This patch joins core-clk and gating-clk init to maintain proper init order. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-11-24clk: mvebu: Add Core Divider clockEzequiel Garcia
This commit introduces a new group of clocks present in Armada 370/XP SoCs (called "Core Divider" clocks) and add a provider for them. The only clock supported for now is the NAND clock (ndclk), but the infrastructure to add the rest is already set. Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-11-24clk: mvebu: staticize of_cpu_clk_setupJisheng Zhang
This symbol is used only in this file. The patch fix the following sparse warning: warning: symbol 'of_cpu_clk_setup' was not declared. Should it be static? Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-10-06clk: armada-370: fix tclk frequenciesSimon Guinot
This patch fixes the tclk frequency array for the Armada-370 SoC. This bug has been introduced by commit 6b72333d ("clk: mvebu: add Armada 370 SoC-centric clock init"). A wrong tclk frequency affects the following drivers: mvsdio, mvneta, i2c-mv64xxx and mvebu-devbus. This list may be incomplete. About the mvneta Ethernet driver, note that the tclk frequency is used to compute the Rx time coalescence. Then, this bug harms the coalescence configuration and also degrades the networking performances with the default values. Signed-off-by: Simon Guinot <simon.guinot@sequanux.org> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Gregory CLEMENT <gregory.clement@free-electrons.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Cc: stable@vger.kernel.org Signed-off-by: Michael Turquette <mturquette@deferred.io>
2013-08-27clk: kirkwood: Fix incorrect placement of __initconstSachin Kamat
__initconst 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: Gregory Clement <gregory.clement@free-electrons.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-27clk: dove: Fix incorrect placement of __initconstSachin Kamat
__initconst 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: Gregory Clement <gregory.clement@free-electrons.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-27clk: armada-xp: Fix incorrect placement of __initconstSachin Kamat
__initconst 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: Gregory Clement <gregory.clement@free-electrons.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-27clk: armada-370: Fix incorrect placement of __initconstSachin Kamat
__initconst 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: Gregory Clement <gregory.clement@free-electrons.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-08-23clk: mvebu: add missing iounmapJisheng Zhang
Add missing iounmap to setup error path. Signed-off-by: Jisheng Zhang <jszhang@marvell.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2013-05-29clk: mvebu: disintegrate obsolete fileSebastian Hesselbarth
Switch from function-centric to soc-centric clock drivers now makes a bunch of files obsolete. This deletes all files and Kconfig options that are not required anymore. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: add Armada XP SoC-centric clock initSebastian Hesselbarth
This is moving core clock and clock gating init for Armada XP to its own file and adds a Kconfig option. Also init functions are added and declared so they get called on of_clk_init. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: add Armada 370 SoC-centric clock initSebastian Hesselbarth
This is moving core clock and clock gating init for Armada 370 to its own file and adds a Kconfig option. Also init functions are added and declared so they get called on of_clk_init. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: add Kirkwood SoC-centric clock initSebastian Hesselbarth
This is moving core clock and clock gating init for Kirkwood to its own file and adds a Kconfig option. Also init functions are added and declared so they get called on of_clk_init. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: add Dove SoC-centric clock initSebastian Hesselbarth
This is moving core clock and clock gating init for Dove to its own file and adds a Kconfig option. Also init functions are added and declared so they get called on of_clk_init. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: add common clock functions for core clk and clk gatingSebastian Hesselbarth
Based on the current common functions for core clocks and clock gating control, new common functions are joined in a single file. Given the opportunity, names of functions and structs are unified, and also a Kconfig entry is added. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-29clk: mvebu: introduce per-clock-gate flagsSebastian Hesselbarth
Clock gates found on MVEBU SoCs get registered by a common function. To allow specific SoCs to provide tweaks introduce flags to the clock gate descriptor instead of filling up the common function SoC specific tweaks. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-20clk: mvebu: add more PCIe clocks for Armada XPThomas Petazzoni
The current revision of the datasheet only mentions the gatable clocks for the PCIe 0.0, 0.1, 0.2 and 0.3 interfaces, and forgot to mention the ones for the PCIe 1.0, 1.1, 1.2, 1.3, 2.0 and 3.0 interfaces. After confirmation with Marvell engineers, this patch adds the missing gatable clocks for those PCIe interfaces. It also changes the name of the previously existing PCIe gatable clocks, in order to match the naming using the datasheets. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-05-20clk: mvebu: create parent-child relation for PCIe clocks on Armada 370Thomas Petazzoni
The Armada 370 has two gatable clocks for each PCIe interface, and we want both of them to be enabled. We therefore make one of the two clocks a child of the other, as we did for the sataX and sataXlnk clocks on Armada XP. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-04-30Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina: "Usual stuff, mostly comment fixes, typo fixes, printk fixes and small code cleanups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (45 commits) mm: Convert print_symbol to %pSR gfs2: Convert print_symbol to %pSR m32r: Convert print_symbol to %pSR iostats.txt: add easy-to-find description for field 6 x86 cmpxchg.h: fix wrong comment treewide: Fix typo in printk and comments doc: devicetree: Fix various typos docbook: fix 8250 naming in device-drivers pata_pdc2027x: Fix compiler warning treewide: Fix typo in printks mei: Fix comments in drivers/misc/mei treewide: Fix typos in kernel messages pm44xx: Fix comment for "CONFIG_CPU_IDLE" doc: Fix typo "CONFIG_CGROUP_CGROUP_MEMCG_SWAP" mmzone: correct "pags" to "pages" in comment. kernel-parameters: remove outdated 'noresidual' parameter Remove spurious _H suffixes from ifdef comments sound: Remove stray pluses from Kconfig file radio-shark: Fix printk "CONFIG_LED_CLASS" doc: put proper reference to CONFIG_MODULE_SIG_ENFORCE ...
2013-04-08clk: mvebu: Fix valid value range checking for cpu_freq_selectAxel Lin
cpu_freq_select is used as array subscript, thus the valid value range is 0 ... ARRAY_SIZE() - 1. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mike Turquette <mturquette@linaro.org> [mturquette@linaro.org: fixed up trivial merge issues]
2013-04-03clk: mvebu: Use common of_clk_init() functionJean-Francois Moine
The use common of_clk_init() function simplifies the clock initialization and adds handling of the DT "fixed-clock". Signed-off-by: Jean-Francois Moine <moinejf@free.fr> Signed-off-by: Mike Turquette <mturquette@linaro.org> [mturquette@linaro.org: fixed $SUBJECT to reflect correct file path]
2013-03-20treewide: Fix typos in printkMasanari Iida
Correct spelling typo in various drivers. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2013-02-09cpufreq: kirkwood: Add a cpufreq driver for Marvell Kirkwood SoCsAndrew Lunn
The Marvell Kirkwood SoCs have simple cpufreq support in hardware. The CPU can either use the a high speed cpu clock, or the slower DDR clock. Add a driver to swap between these two clock sources. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-23clk: mvebu/clk-cpu.c: fix memory leakageCong Ding
the variable cpuclk and clk_name should be properly freed when error happens. Signed-off-by: Cong Ding <dinggnu@gmail.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-01-06clk: mvebu: Remove inappropriate __init taggingJoshua Coombs
If the Orion WDT driver is built as a module, an opps occurs during clk lookup when calling mvebu_clk_gating_get_src(). Remove the inappropriate __init tag so the function is available for modules after kernel init. Signed-off-by: Joshua Coombs <josh.coombs@gmail.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-11-20clk: mvebu: armada 370/XP add clock gating control provider for DTGregory CLEMENT
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2012-11-20clk: mvebu: add clock gating control provider for DTSebastian Hesselbarth
This driver allows to provide DT clocks for clock gates found on Marvell Dove and Kirkwood SoCs. The clock gates are referenced by the phandle index of the corresponding bit in the clock gating control register to ease lookup in the datasheet. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
2012-11-20clk: mvebu: add armada-370-xp CPU specific clocksGregory CLEMENT
Add Armada 370/XP specific CPU clocks Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
2012-11-20clk: mvebu: add mvebu core clocks.Sebastian Hesselbarth
This driver allows to provide DT clocks for core clocks found on Marvell Kirkwood, Dove & 370/XP SoCs. The core clock frequencies and ratios are determined by decoding the Sample-At-Reset registers. Although technically correct, using a divider of 0 will lead to div_by_zero panic. Let's use a ratio of 0/1 instead to fail later with a zero clock. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by Gregory CLEMENT <gregory.clement@free-electrons.com>
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