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* clk: hisilicon: hi3660：Fix potential NULL dereference in ↵Wei Yongjun2018-03-121-0/+2
| | | | | | | | | | | | | | | | | | | | | | | hi3660_stub_clk_probe() platform_get_resource() may return NULL, add proper check to avoid potential NULL dereferencing. This is detected by Coccinelle semantic patch. @@ expression pdev, res, n, t, e, e1, e2; @@ res = platform_get_resource(pdev, t, n); + if (!res) + return -EINVAL; ... when != res == NULL e = devm_ioremap(e1, res->start, e2); Fixes: 4f16f7ff3bc0 ("clk: hisilicon: Add support for Hi3660 stub clocks") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* Merge branch 'clk-divider-container' into clk-nextStephen Boyd2018-01-271-1/+1
|\ | | | | | | | | | | | | * clk-divider-container: clk: divider: fix incorrect usage of container_of Plus fixup sprd/div.c to pass the width too.
| * clk: divider: fix incorrect usage of container_ofJerome Brunet2017-12-291-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | divider_recalc_rate() is an helper function used by clock divider of different types, so the structure containing the 'hw' pointer is not always a 'struct clk_divider' At the following line: > div = _get_div(table, val, flags, divider->width); in several cases, the value of 'divider->width' is garbage as the actual structure behind this memory is not a 'struct clk_divider' Fortunately, this width value is used by _get_val() only when CLK_DIVIDER_MAX_AT_ZERO flag is set. This has never been the case so far when the structure is not a 'struct clk_divider'. This is probably why we did not notice this bug before Fixes: afe76c8fd030 ("clk: allow a clk divider with max divisor when zero") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* | clk: hisilicon: Add support for Hi3660 stub clocksKaihua Zhong2017-12-073-0/+192
|/ | | | | | | | | | | | | | | | | | | | | | | | | Hi3660 has four stub clocks, which are big and LITTLE cluster clocks, GPU clock and DDR clock. These clocks ask MCU for frequency scaling by sending message through mailbox. This commit adds support for stub clocks, it requests the dedicated mailbox channel at initialization; then later uses this channel to send message to MCU to execute frequency scaling. The four stub clocks share the same mailbox channel, but every stub clock has its own command id so MCU can distinguish the requirement coming for which clock. A shared memory is used to present effective frequency value, so the clock driver uses I/O mapping for the memory and reads back rate value. Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Kai Zhao <zhaokai1@hisilicon.com> Signed-off-by: Tao Wang <kevin.wangtao@hisilicon.com> Signed-off-by: Ruyi Wang <wangruyi@huawei.com> Signed-off-by: Kaihua Zhong <zhongkaihua@huawei.com> [sboyd: Fix possible out of bounds access in hi3660_stub_clk_hw_get(), use devm_of_clk_add_hw_provider(), devm_ioremap() returns NULL not error pointers] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* Merge tag 'clk-for-linus' of ↵Linus Torvalds2017-11-186-10/+18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "We have two changes to the core framework this time around. The first being a large change that introduces runtime PM support to the clk framework. Now we properly call runtime PM operations on the device providing a clk when the clk is in use. This helps on SoCs where the clks provided by a device need something to be powered on before using the clks, like power domains or regulators. It also helps power those things down when clks aren't in use. The other core change is a devm API addition for clk providers so we can get rid of a bunch of clk driver remove functions that are just doing of_clk_del_provider(). Outside of the core, we have the usual addition of clk drivers and smattering of non-critical fixes to existing drivers. The biggest diff is support for Mediatek MT2712 and MT7622 SoCs, but those patches really just add a bunch of data. By the way, we're trying something new here where we build the tree up with topic branches. We plan to work this into our workflow so that we don't step on each other's toes, and so the fixes branch can be merged on an as-needed basis. Summary: Core: - runtime PM support for clk providers - devm API for of_clk_add_hw_provider() New Drivers: - Mediatek MT2712 and MT7622 - Renesas R-Car V3M SoC Updates: - runtime PM support for Samsung exynos5433/exynos4412 providers - removal of clkdev aliases on Samsung SoCs - convert clk-gpio to use gpio descriptors - various driver cleanups to match kernel coding style - Amlogic Video Processing Unit VPU and VAPB clks - sigma-delta modulation for Allwinner audio PLLs - Allwinner A83t Display clks - support for the second display unit clock on Renesas RZ/G1E - suspend/resume support for Renesas R-Car Gen3 CPG/MSSR - new clock ids for Rockchip rk3188 and rk3368 SoCs - various 'const' markings on clk_ops structures - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits) clk: stm32h7: fix test of clock config clk: pxa: fix building on older compilers clk: sunxi-ng: a83t: Fix i2c buses bits clk: ti: dra7-atl-clock: fix child-node lookups clk: qcom: common: fix legacy board-clock registration clk: uniphier: fix DAPLL2 clock rate of Pro5 clk: uniphier: fix parent of miodmac clock data clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu' clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep() clk: hi3660: fix incorrect uart3 clock freqency clk: kona-setup: Delete error messages for failed memory allocations ARC: clk: fix spelling mistake: "configurarion" -> "configuration" clk: cdce925: remove redundant check for non-null parent_name clk: versatile: Improve sizeof() usage clk: versatile: Delete error messages for failed memory allocations clk: ux500: Improve sizeof() usage clk: ux500: Delete error messages for failed memory allocations clk: spear: Delete error messages for failed memory allocations clk: ti: Delete error messages for failed memory allocations clk: mmp: Adjust checks for NULL pointers ...
| * Merge branch 'clk-const' into clk-nextStephen Boyd2017-11-143-4/+4
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * clk-const: clk: make clk_init_data const clk: imx: make clk_ops const clk: mmp: make clk_ops const clk: hisilicon: make clk_ops const clk: mxs: make clk_ops const clk: sirf: make clk_ops const clk: spear: make clk_ops const CLK: SPEAr: make aux_clk_masks structures const CLK: SPEAr: make structure field and function argument as const
| | * clk: hisilicon: make clk_ops constBhumika Goyal2017-11-023-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | Make these const as they are only stored in the const field of a clk_init_data structure. Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
| * | clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu'Shawn Guo2017-11-141-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | Other than 'mmc_mux', 'clk_sdio0_ciu' uses a different parent mux clock. Let's add this mux clock as 'sdio0_mux', and correct the parent of 'clk_sdio0_ciu' to be it. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
| * | clk: hisilicon: Delete an error message for a failed memory allocation in ↵Markus Elfring2017-11-141-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | hisi_register_clkgate_sep() Omit an extra message for a memory allocation failure in this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
| * | clk: hi3660: fix incorrect uart3 clock freqencyZhong Kaihua2017-11-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | UART3 clock rate is doubled in previous commit. This error is not detected until recently a mezzanine board which makes real use of uart3 port (through LS connector of 96boards) was setup and tested on hi3660-hikey960 board. This patch changes clock source rate of clk_factor_uart3 to 100000000. Signed-off-by: Zhong Kaihua <zhongkaihua@huawei.com> Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
| * | clk: hi6220: mark clock cs_atb_syspll as criticalLeo Yan2017-11-011-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | Clock cs_atb_syspll is pll used for coresight trace bus; when clock cs_atb_syspll is disabled and operates its child clock node cs_atb results in system hang. So mark clock cs_atb_syspll as critical to keep it enabled. Cc: Guodong Xu <guodong.xu@linaro.org> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1504226835-2115-2-git-send-email-leo.yan@linaro.org
* / License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* clk: hi6220: change watchdog clock sourceLeo Yan2017-09-011-3/+3
| | | | | | | | | | | | The old code uses tcxo (19.2MHz) as watchdog clock but actually the watchdog uses 32K clock, as result the watchdog timeout cannot be set correctly and delay long time to reset SoC. So this patch is to use 'ref32k' as clock source for watchdog. Fixes: 72ea48610d43 ("clk: hi6220: Clock driver support for Hisilicon hi6220 SoC") Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: add usb2 clocks for hi3798cv200 SoCJiancheng Xue2017-06-211-0/+21
| | | | | | | | Add usb2 clocks for hi3798cv200 SoC. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi6220: add acpu clockZhangfei Gao2017-06-201-0/+22
| | | | | | | | | Add acpu clock, including sft clock controlling hi6220 coresight module Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Li Pengcheng <lipengcheng8@huawei.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3660: Set PPLL2 to 2880MZhong Kaihua2017-06-201-2/+2
| | | | | | | | | | | | Set PPLL2 to 2880M. With this patch, we saw better compatibility on various 1080p HDMI monitors. Signed-off-by: Zhong Kaihua <zhongkaihua@huawei.com> Signed-off-by: Zheng Shaobo <zhengshaobo1@huawei.com> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> [sboyd@codeaurora.org: Add UL to long number to silence C90 warning] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3660: add clocks for video encoder, decoder and ISPChen Jun2017-06-201-0/+40
| | | | | | | | | | | | | This patch adds more clocks for hi3660, including: - video encoder and decoder - ISP (Image Signal Processing) Signed-off-by: Chen Jun <chenjun14@huawei.com> Signed-off-by: Zhong Kaihua <zhongkaihua@huawei.com> Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3660: fix wrong parent name of clk_mux_sysbusChen Jun2017-06-201-2/+4
| | | | | | | | | | Parent name of clk_mux_sysbus is not correct. This patch fixes it. Signed-off-by: Chen Jun <chenjun14@huawei.com> Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Hi3660: register fixed_rate_clks with CLK_OF_DECLARE_DRIVERLeo Yan2017-06-201-10/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The timer will register into system at very early phase at kernel boot; if timer needs to use clock, the clock should be get ready in function of_clk_init() so later the timer driver probe can retrieve clock successfully. This is finished in below flow on arm64: start_kernel() `-> time_init() `-> of_clk_init(NULL) => register timer's clock `-> clocksource_probe() => register timer On Hi3660 the sp804 timer uses clock "osc32k", this clock is registered as platform driver rather than CLK_OF_DECLARE_DRIVER method. As result, sp804 timer probe returns failure due if cannot bind clock properly. To fix the failure, this patch is to split crgctrl clocks into two subsets. One part is for fixed_rate_clks which includes pre-defined fixed rate clocks, and "osc32k" clock is in this category; So we change their registration to CLK_OF_DECLARE_DRIVER method, as result the clocks can be registered ahead with function of_clk_init() and timer driver can bind timer clock successfully; the rest of the crgctrl clocks are still registered by the probe of the platform driver. This patch also adds checking for all crgctrl clocks registration and print out log if any clock has failure. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3620: Fix a typo in one variable nameMarkus Elfring2017-04-191-3/+3
| | | | | | | | | | | The script "checkpatch.pl" pointed information out like the following. CHECK: 'seperated' may be misspelled - perhaps 'separated'? Thus rename the affected variable. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3620: Delete error messages for a failed memory allocation in two ↵Markus Elfring2017-04-191-6/+2
| | | | | | | | | | | | | functions The script "checkpatch.pl" pointed information out like the following. WARNING: Possible unnecessary 'out of memory' message Thus remove such statements here. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi3620: Use kcalloc() in hi3620_mmc_clk_init()Markus Elfring2017-04-191-1/+1
| | | | | | | | | | | | | | | * A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: Delete error messages for failed memory allocations in ↵Markus Elfring2017-04-191-6/+4
| | | | | | | | | | | | | hisi_clk_init() The script "checkpatch.pl" pointed information out like the following. WARNING: Possible unnecessary 'out of memory' message Thus remove such statements here. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: Use devm_kmalloc_array() in hisi_clk_alloc()Markus Elfring2017-04-191-2/+3
| | | | | | | | | | | | | | | * A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "devm_kmalloc_array". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: Use kcalloc() in hisi_clk_init()Markus Elfring2017-04-191-2/+1
| | | | | | | | | | | | | | | * A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kcalloc". This issue was detected by using the Coccinelle software. * Replace the specification of a data type by a pointer dereference to make the corresponding size determination a bit safer according to the Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi6220: add debug APB clockLeo Yan2017-04-121-0/+1
| | | | | | | | | The debug APB clock is absent in hi6220 driver, so this patch is to add support for it. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
* clk: hisilicon: fix lock assignmentLeo Yan2017-01-271-0/+1
| | | | | | | | | | | | | | | | In clock driver initialize phase the spinlock is missed to assignment to struct clkgate_separated, finally there have no locking to protect exclusive accessing for clock registers. This bug introduces the console has no output after enable coresight driver on 96boards Hikey; this is because console using UART3, which has shared the same register with coresight clock enabling bit. After applied this patch it can assign lock properly to protect exclusive accessing, and console can work well after enabled coresight modules. Fixes: 0aa0c95f743a ("clk: hisilicon: add common clock support") Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: Add clock driver for hi3660 SoCZhangfei Gao2017-01-103-0/+575
| | | | | | | | | Add clock drivers for hi3660 SoC, this driver controls the SoC registers to supply different clocks to different IPs in the SoC. Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> [sboyd@codeaurora.org: Simplify probe with function pointer] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Hi6220: enable stub clock driver for ARCH_HISILeo Yan2016-11-151-0/+1
| | | | | | | | | | | | In current kernel config 'CONFIG_STUB_CLK_HI6220' is disabled by default, as result stub clock driver has not been registered and CPUFreq driver cannot work. This patch is to enable stub clock driver in config for ARCH_HISI. Reported-by: Dietmar Eggemann <dietmar.eggemann@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* Merge branch 'clk-hisi' into clk-nextStephen Boyd2016-11-145-0/+719
|\ | | | | | | | | | | * clk-hisi: clk: hisilicon: add CRG driver for Hi3516CV300 SoC clk: hisilicon: add CRG driver for Hi3798CV200 SoC
| * clk: hisilicon: add CRG driver for Hi3516CV300 SoCPan Wen2016-11-143-0/+339
| | | | | | | | | | | | | | | | | | | | Add CRG driver for Hi3516CV300 SoC. CRG(Clock and Reset Generator) module generates clock and reset signals used by other module blocks on SoC. Signed-off-by: Pan Wen <wenpan@hisilicon.com> Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
| * clk: hisilicon: add CRG driver for Hi3798CV200 SoCJiancheng Xue2016-11-124-0/+380
| | | | | | | | | | | | | | | | | | | | Add CRG driver for Hi3798CV200 SoC. CRG(Clock and Reset Generator) module generates clock and reset signals used by other module blocks on SoC. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* | clk: hi6220: use CLK_OF_DECLARE_DRIVER for sysctrl and mediactrl clock initShawn Guo2016-10-181-2/+2
|/ | | | | | | | | | | | | | | | | | | | The hi6220-sysctrl and hi6220-mediactrl are not only clock provider but also reset controller. It worked fine that single sysctrl/mediactrl device node in DT can be used to initialize clock driver and populate platform device for reset controller. But it stops working after commit 989eafd0b609 ("clk: core: Avoid double initialization of clocks") gets merged. The commit sets flag OF_POPULATED during clock initialization to skip the platform device populating for the same device node. On hi6220, it effectively makes hi6220-sysctrl reset driver not probe any more. The patch changes hi6220 sysctrl and mediactrl clock init macro from CLK_OF_DECLARE to CLK_OF_DECLARE_DRIVER, so that the reset driver using the same hardware block can continue working. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hi6220: Change syspll and media_syspll clk to 1.19GHzXinliang Liu2016-07-071-2/+2
| | | | | | | | | | | | | | | In the bootloader of HiKey/96boards, syspll and media_syspll clk was initialized to 1.19GHz. So, here changes it in kernel accordingly. 1.19GHz was chosen over 1.2GHz because at 1.19GHz we get more precise HDMI pixel clock (1.19G/16 = 74.4MHz) for 1280x720p@60Hz HDMI (74.25MHz required by standards). Closer pixel clock means better compatibility to HDMI monitors. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1467189955-21694-1-git-send-email-guodong.xu@linaro.org
* clk: hisilicon: hi3519: add driver remove path and fix some issuesJiancheng Xue2016-06-301-16/+100
| | | | | | | | | | 1. Add driver remove path. 2. Fix some issues. -Fix the ordering issue about clock provider being published. -Add error checking upon registering clocks. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: add hisi_clk_unregister_* functionsJiancheng Xue2016-06-301-0/+21
| | | | | | | Add hisi_clk_unregister_* functions. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: add error processing for hisi_clk_register_* functionsJiancheng Xue2016-06-302-15/+55
| | | | | | | Add error processing for hisi_clk_register_* functions. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: add hisi_clk_alloc function.Jiancheng Xue2016-06-302-0/+32
| | | | | | | | | | | Before, there was an ordering issue that the clock provider had been published in hisi_clk_init before it could provide valid clocks to consumers. hisi_clk_alloc is just used to allocate memory space for struct hisi_clock_data. It makes it possible to publish the provider after the clocks are ready. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* reset: hisilicon: change the definition of hisi_reset_initJiancheng Xue2016-06-303-13/+13
| | | | | | | Change the input arguments type to struct platform_device pointer. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* Merge branch 'clk-hi6220-rtc' into clk-nextStephen Boyd2016-06-301-0/+2
|\ | | | | | | | | * clk-hi6220-rtc: clk: hi6220: Add RTC clock for pl031
| * clk: hi6220: Add RTC clock for pl031Zhangfei Gao2016-06-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds clk support for the pl031 RTC on hi6220 Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Wei Xu <xuwei5@hisilicon.com> Cc: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> [jstultz: Forward ported, tweaked commit description] Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* | clk: hi6220: fix missing clk.h includeBen Dooks2016-06-211-0/+2
|/ | | | | | | | | | Fix the warning from missing "clk.h" include which defines hi6220_register_clkdiv() function. drivers/clk/hisilicon/clkdivider-hi6220.c:102:12: warning: symbol 'hi6220_register_clkdiv' was not declared. Should it be static? Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: add CRG driver for hi3519 socJiancheng Xue2016-05-063-0/+140
| | | | | | | | | The CRG(Clock and Reset Generator) block provides clock and reset signals for other modules in hi3519 soc. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: export some hisilicon APIs to modulesJiancheng Xue2016-05-062-15/+22
| | | | | | | | Change some arguments to constant type. Export some hisilicon APIs to modules. Signed-off-by: Jiancheng Xue <xuejiancheng@huawei.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* reset: hisilicon: add reset controller driver for hisilicon SOCsJiancheng Xue2016-05-064-0/+178
| | | | | | | | | | In most of hisilicon SOCs, reset controller and clock provider are combined together as a block named CRG (Clock and Reset Generator). This patch mainly implements the reset function. Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisilicon: Remove CLK_IS_ROOTStephen Boyd2016-03-035-56/+56
| | | | | | | | | | This flag is a no-op now. Remove usage of the flag. Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Bintian Wang <bintian.wang@huawei.com> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Remove unneeded semicolonsJavier Martinez Canillas2015-09-171-1/+1
| | | | | | | | There are cleary typo errors so can be removed. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Acked-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Hi6220: separately build stub clock driverLeo Yan2015-09-032-2/+9
| | | | | | | | | | | | | | | The previous code, kernel builds Hi6220's common clock driver and stub clock driver together. Stub clock driver has introduced the dependency with CONFIG_MAILBOX, so kernel will not build Hi6220's common clock driver due ARM64's defconfig have not enabled CONFIG_MAILBOX by default. So separately build stub clock driver and common clock driver for Hi6220; and only let stub clock driver has the dependency with CONFIG_MAILBOX. Signed-off-by: Leo Yan <leo.yan@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Hi6220: add stub clock driverLeo Yan2015-08-253-2/+278
| | | | | | | | | | | | | | | | On Hi6220, there have some clocks which can use mailbox channel to send messages to power controller to change frequency; this includes CPU, GPU and DDR clocks. For dynamic frequency scaling, firstly need write the frequency value to SRAM region, and then send message to mailbox to trigger power controller to handle this requirement. This driver will use syscon APIs to pass SRAM memory region and use common mailbox APIs for channels accessing. This init driver will support cpu frequency change firstly. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisi: refine parameter checking for initLeo Yan2015-08-031-8/+3
| | | | | | | | | | *of_iomap()* will check the device node pointer, and if the pointer is NULL it will return error code. So refine clock's init flow by checking the device node with this simple way; and polish a little for the print out message. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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