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path: root/drivers/clk/Kconfig
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9 daysclk: Add missing dependency for SANDBOX_CLK_CCFTom Rini
In order to build SANDBOX_CLK_CCF we need for CLK_CCF to be enabled, add that as a select similar to other drivers. Signed-off-by: Tom Rini <[email protected]>
2026-02-10drivers/clk/Kconfig: fix "related" typo in help textPeter Korsgaard
It looks like the original zynqmp typo was copied to versal as well. Fix both. Signed-off-by: Peter Korsgaard <[email protected]> Reviewed-by: Quentin Schulz <[email protected]> Signed-off-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2026-01-09dm: core: Default to using DEVRES outside of xPLTom Rini
The devm alloc functions that we have may follow the Linux kernel model where allocations are (almost always) automatically free()'d. However, quite often we don't enable, in full U-Boot, the tracking and free()'ing functionality. This in turn leads to memory leaks because the driver author expects that since the functions have the same name as in the Linux Kernel they have the same behavior. In turn we then get functionally correct commits such as commit 00e1fed93c8c ("firmware: ti_sci: Fix memory leaks in devm_ti_sci_get_of_resource") that manually add these calls. Rather than manually tracking allocations and implementing free()s, rework things so that we follow expectations by enabling the DEVRES functionality (outside of xPL phases). This turns DEVRES from a prompted symbol to a symbol that must be select'd, and we now remove our non-managed alloc/free functions from outside of xPL builds. Reviewed-by: Michael Trimarchi <[email protected]> Signed-off-by: Tom Rini <[email protected]>
2025-12-19clk: versal: Enable clock driver for Versal Gen 2Michal Simek
Versal Gen 2 is using enhancement SMC format but in near future SCMI client should be used. This patch is just bridging this gap till SCMI server is fully tested. Signed-off-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/e83c665408d1453a464dd02cd2a25bb0ed267131.1762788250.git.michal.simek@amd.com
2025-10-28clk: Tighten some clock driver dependenciesTom Rini
A few clock drivers cannot build without access to some platform specific header files. Express those requirements in Kconfig as well. Signed-off-by: Tom Rini <[email protected]>
2025-07-08clk: versal: Fix clock driver dependencyMichal Simek
Driver fully depends on firmware driver to be present that's why change imply to depends on to cover it. Signed-off-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/bd18a4ce3e65411bb956636d4a2ef4b5fbe8b9e1.1749104235.git.michal.simek@amd.com
2025-06-11clk: scmi: manage properly the clk identifier with CCFPatrick Delaunay
Each clock identifier needs to be unique when CCF is activated, and it is not respected today by SCMI clock driver. This patch supports a unique clk id by using the uclass API clk_get_id() / dev_clk_dm() and by activating by default CONFIG_CLK_AUTO_ID with CCF which adds an offset to the SCMI clock identifiers. After this patch, the SCMI clock driver can coexist with other clock provider without conflict, they can share internal identifier [0..N] defined in their binding and the clock ID = 0 (reserved for dummy clock) is no more used. Signed-off-by: Patrick Delaunay <[email protected]> Signed-off-by: Patrice Chotard <[email protected]> Cc: Lukasz Majewski <[email protected]> Cc: Sean Anderson <[email protected]> Reviewed-by: Patrick Delaunay <[email protected]> Reviewed-by: Patrice Chotard <[email protected]>
2025-06-11clk: add CONFIG_CLK_AUTO_IDPatrick Delaunay
Add a new config CONFIG_CLK_AUTO_ID to support a unique clk id for all the clock providers, managed by clk uclass, when the clock reference arg[0] is the same. When the CONFIG is activated, the clock id is limited to the lower CLK_ID_SZ = 24 bits in default clock xlate function and the sequence number + 1 of the clk provider device is added for the 8 higher bits. We use sequence number + 1 to avoid the "dummy" clock id = 0, used for invalid clock when CCF is activated. When this config is activated, the new function clk_get_id() should be used to get back the internal reference to clock for the each clock provider. Signed-off-by: Patrick Delaunay <[email protected]> Signed-off-by: Patrice Chotard <[email protected]> Cc: Lukasz Majewski <[email protected]> Cc: Sean Anderson <[email protected]> Reviewed-by: Patrick Delaunay <[email protected]> Reviewed-by: Patrice Chotard <[email protected]>
2025-05-21clk: thead: Port clock controller driver of TH1520 SoCYao Zi
The driver is adapted from Linux kernel's version of clk-th1520-ap.c, with only output clocks for external sensors, which are barely useful in bootloaders, removed. Same as the mainline driver, it currently lacks of ability to enable and reconfigure PLLs, which could be implemented later. Signed-off-by: Yao Zi <[email protected]> Reviewed-by: Leo Yu-Chi Liang <[email protected]>
2025-02-26clk: add stub clock driverCaleb Connolly
Add a stub clock driver which can be used to bind clock controllers which aren't required for the platform to boot, but which are needed for U-Boot drivers to work. In addition, add a NOP parent driver to allow for binding the parent nodes of the clock. Initially this driver supports a Qualcomm platform where the MMC driver tries to fetch the RPM clock controller, which is not actually required for the device to work. Reviewed-by: Neil Armstrong <[email protected]> Acked-by: Ilias Apalodimas <[email protected]> Signed-off-by: Caleb Connolly <[email protected]>
2024-09-11clk: sophgo: cv1800b: Add clock controller driver for cv1800b SoCKongyang Liu
Add clock controller driver for sophgo cv1800b SoC Signed-off-by: Kongyang Liu <[email protected]> Reviewed-by: Leo Yu-Chi Liang <[email protected]>
2024-05-20Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"Tom Rini
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <[email protected]> Signed-off-by: Tom Rini <[email protected]>
2024-05-19Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""Tom Rini
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <[email protected]> Signed-off-by: Tom Rini <[email protected]>
2024-05-07Merge patch series "arm: Add Analog Devices SC5xx Machine Type"Tom Rini
Greg Malysa <[email protected]> says: This series adds support for the ADI SC5xx machine type and includes two core drivers that are required for being able to boot any board--a UART driver, the gptimer driver which is used as a clock reference (CNTVCNT is not supported on the armv7 sc5xx SoCs) and the clock tree driver. Our corresponding Linux support relies on u-boot configuring the clocks correctly before booting, so it is not possible to boot any board without the CGU/CDU configuration happening here. There are also no board files, device trees, or defconfigs included here, but some common definitions that will be used to build board files currently are. The sc5xx SoCs themselves include many armv7 families (sc57x, sc58x, and sc594) all using an ARM Cortex-A5, and one armv8 family (sc598) indended to be a drop-in replacement for the SC594 in terms of peripherals, with a Cortex-A55 instead. Some of the configuration code in dmcinit and clkinit is quite scary and causes a lot of checkpatch violations. It is modified from code initially provided by ADI, but it has not been fully rewritten. There's a question of how important it is to clean up this code--it has some quality violations, but it has been in use (including in production) for over two years and is known to work for performing the low level SoC initialization, while a rewrite might introduce timing or sequence bugs that could take a significant amount of time to detect in the future.
2024-05-07drivers: clk: adi: Add in SC5XX-family clock driverNathan Barrett-Morrison
This adds support for the SC5XX clock trees which are required for reading clock speeds on the SoCs. This is largely a port of the same support for Linux, which has not yet been submitted upstream. Co-developed-by: Greg Malysa <[email protected]> Signed-off-by: Greg Malysa <[email protected]> Co-developed-by: Ian Roberts <[email protected]> Signed-off-by: Ian Roberts <[email protected]> Signed-off-by: Vasileios Bimpikas <[email protected]> Signed-off-by: Utsav Agarwal <[email protected]> Signed-off-by: Arturs Artamonovs <[email protected]> Signed-off-by: Nathan Barrett-Morrison <[email protected]>
2024-04-22Kconfig: Remove trailing whitespace in its promptMichal Simek
All errors are generated by ./tools/qconfig.py -b -j8 -i whatever. Error look like this: warning: SPL_CLK_CCF (defined at drivers/clk/Kconfig:59) has leading or trailing whitespace in its prompt Signed-off-by: Michal Simek <[email protected]>
2024-01-16clk/qcom: move from mach-snapdragonCaleb Connolly
Clock drivers don't belong here, move them to the right place and declutter mach-snapdragon a bit. To de-couple these drivers from specific "target" platforms, add additional config options to enable each clock driver gated behind a common CLK_QCOM option and enable them by default for the respective targets. This will make future work easier as we move towards a generic Qualcomm target. Reviewed-by: Sumit Garg <[email protected]> Signed-off-by: Caleb Connolly <[email protected]>
2023-09-09clk: Add GPIO-controlled clock gate driverMarek Vasut
Add driver which implements GPIO-controlled clock. The GPIO is used as a gate to enable/disable the clock. This matches linux clk-gpio.c driver, however this does not implement the GPIO mux part, which in U-Boot DM would be better fit in separate driver. Signed-off-by: Marek Vasut <[email protected]> Reviewed-by: Sean Anderson <[email protected]>
2023-07-14clk: scmi: claim the dependency on CONFIG_CLKAKASHI Takahiro
Without CONFIG_CLK, the build fails with the following message: LD u-boot aarch64-none-linux-gnu-ld.bfd: drivers/firmware/scmi/scmi_agent-uclass.o: \ in function `scmi_bind_protocols': .../drivers/firmware/scmi/scmi_agent-uclass.c:79: undefined reference to \ `_u_boot_list_2_driver_2_scmi_clock' Signed-off-by: AKASHI Takahiro <[email protected]> Reviewed-by: Sean Anderson <[email protected]>
2023-04-23Merge tag 'u-boot-rockchip-20230421' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-rockchip - Add rk3588 evb support; - Update pinctrl for rk3568 and rk3588; - Update rk3288 dts; - Update mmc support for rk3568 and rk3588; - Add rng support for rk3588; - Add DSI support for rk3568; - Some other misc fixes in dts, config, driver;
2023-04-21clk: scmi: Add Kconfig option for SPLJonas Karlman
Building U-Boot SPL with CLK_SCMI and SCMI_FIRMWARE Kconfig options enabled and SPL_FIRMWARE disabled result in the following error. drivers/clk/clk_scmi.o: in function `scmi_clk_gate': drivers/clk/clk_scmi.c:84: undefined reference to `devm_scmi_process_msg' drivers/clk/clk_scmi.c:88: undefined reference to `scmi_to_linux_errno' drivers/clk/clk_scmi.o: in function `scmi_clk_get_rate': drivers/clk/clk_scmi.c:113: undefined reference to `devm_scmi_process_msg' drivers/clk/clk_scmi.c:117: undefined reference to `scmi_to_linux_errno' drivers/clk/clk_scmi.o: in function `scmi_clk_set_rate': drivers/clk/clk_scmi.c:139: undefined reference to `devm_scmi_process_msg' drivers/clk/clk_scmi.c:143: undefined reference to `scmi_to_linux_errno' drivers/clk/clk_scmi.o: in function `scmi_clk_probe': drivers/clk/clk_scmi.c:157: undefined reference to `devm_scmi_of_get_channel' make[1]: *** [scripts/Makefile.spl:527: spl/u-boot-spl] Error 1 make: *** [Makefile:2043: spl/u-boot-spl] Error 2 Add Kconfig option so that CLK_SCMI can be disabled in SPL to fix this. Signed-off-by: Jonas Karlman <[email protected]> Reviewed-by: Kever Yang <[email protected]>
2023-04-20clk: starfive: Add StarFive JH7110 clock driverYanhong Wang
Add a DM clock driver for StarFive JH7110 SoC. Signed-off-by: Yanhong Wang <[email protected]> Tested-by: Conor Dooley <[email protected]>
2023-03-09arm64: zynqmp: Add missing ZYNQMP_FIRMWARE dependenciesAlgapally Santosh Sagar
There are missing Kconfig dependencies in the code which is using firmware interface. The commit 71efd45a5fc7 ("arm64: zynqmp: Change firmware dependency") add option to also disable ZYNQMP_FIRMWARE. But not all Kconfig dependencies were properly described and also sdhci and gem drivers didn't protect the code properly. So, add the missing ZYNQMP_FIRMWARE dependencies. Signed-off-by: Algapally Santosh Sagar <[email protected]> Signed-off-by: Ashok Reddy Soma <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Michal Simek <[email protected]>
2022-09-26clk: versal: Enable clock driver for Versal NETJay Buddhabhatti
Add support for Versal NET compatible string in clock driver. Signed-off-by: Jay Buddhabhatti <[email protected]> Signed-off-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/20a35d0c1ffcc222fbe93dd406cdd0aff92f5223.1663589964.git.michal.simek@amd.com
2022-06-17clk: Add directory for STM32 clock driversPatrick Delaunay
Add a directory in drivers/clk to regroup the clock drivers for all STM32 Soc with CONFIG_ARCH_STM32 (MCUs with cortex M) or CONFIG_ARCH_STM32MP (MPUs with cortex A). Signed-off-by: Patrick Delaunay <[email protected]> Reviewed-by: Patrice Chotard <[email protected]> Reviewed-by: Grzegorz Szymaszek <[email protected]> Acked-by: Sean Anderson <[email protected]> Change-Id: I955af307963f732167396f0157a30cf2fc91f150
2022-05-02vpl: Add Kconfig options for VPLSimon Glass
Add VPL versions of commonly used Kconfig options. Signed-off-by: Simon Glass <[email protected]>
2022-02-24clk: Rename ICS8N3QV01 to CLK_ICS8N3QV01Sean Anderson
This driver was missing a clock prefix. Add one. Signed-off-by: Sean Anderson <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2022-02-24clk: Alphabetize KconfigSean Anderson
This alphabetizes the Kconfig for the clock subsystem. This will help people find their clocks, and help prevent merge conflicts. Signed-off-by: Sean Anderson <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2021-08-21clk: clk_versaclock: Add support for versaclock driverAdam Ford
The driver is based on the Versaclock driver from the Linux code, but due differences in the clock API between them, some pieces had to be changed. This driver creates a mux, pfd, pll, and a series of fod ouputs. Rate Usecnt Name ------------------------------------------ 25000000 0 `-- x304-clock 25000000 0 `-- [email protected] 25000000 0 |-- [email protected] 2800000000 0 | `-- [email protected] 33333333 0 | |-- [email protected] 33333333 0 | | `-- [email protected] 33333333 0 | |-- [email protected] 33333333 0 | | `-- [email protected] 50000000 0 | |-- [email protected] 50000000 0 | | `-- [email protected] 125000000 0 | `-- [email protected] 125000000 0 | `-- [email protected] 25000000 0 `-- [email protected]_sel_i2cb A translation function is added so the references to <&versaclock X> get routed to the corresponding [email protected]. Signed-off-by: Adam Ford <[email protected]> Reviewed-by: Sean Anderson <[email protected]>
2021-07-01Merge tag 'xilinx-for-v2021.10' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-microblaze into next Xilinx changes for v2021.10 clk: - Add driver for Xilinx Clocking Wizard IP fdt: - Also record architecture in /fit-images net: - Fix plat/priv data handling in axi emac - Add support for 10G/25G speeds pca953x: - Add missing dependency on i2c serial: - Fix dependencies for DEBUG uart for pl010/pl011 - Add setconfig option for cadence serial driver watchdog: - Add cadence wdt expire now function zynq: - Update DT bindings to reflect the latest state and descriptions zynqmp: - Update DT bindings to reflect the latest state and descriptions - SPL: Add support for ECC DRAM initialization - Fix R5 core 1 handling logic - Enable firmware driver for mini configurations - Enable secure boot, regulators, wdt - Add support xck devices and 67dr - Add psu init for sm/smk-k26 SOMs - Add handling for MMC seq number via mmc_get_env_dev() - Handle reserved memory locations - Add support for u-boot.itb generation for secure OS - Handle BL32 handoffs for secure OS - Add support for 64bit addresses for u-boot.its generation - Change eeprom handling via nvmem aliases
2021-06-23clk: zynq: Add clock wizard driverZhengxun
The Clocking Wizard IP supports clock circuits customized to your clocking requirements. The wizard support for dynamically reconfiguring the clocking primitives for Multiply, Divide, Phase Shift/Offset, or Duty Cycle. Limited by U-Boot clk uclass without set_phase API, this patch only provides set_rate to modify the frequency. Signed-off-by: Zhengxun <[email protected]> Reviewed-by: Sean Anderson <[email protected]> Signed-off-by: Michal Simek <[email protected]>
2021-06-17clk: k210: Move k210 clock out of its own subdirectorySean Anderson
Now that we have only one clock driver, we don't need to have our own subdirectory. Move the driver back with the rest of the clock drivers. The MAINTAINERS for kendryte pinctrl is also fixed since it has always been wrong. Signed-off-by: Sean Anderson <[email protected]> Reviewed-by: Leo Yu-Chi Liang <[email protected]>
2021-04-23clk: Fix typo in Zynq Kconfig symbol descriptionMichal Simek
Trivial typo fix. Signed-off-by: Michal Simek <[email protected]>
2021-01-18clk: Add Microchip PolarFire SoC clock driverPadmarao Begari
Add clock driver code for the Microchip PolarFire SoC. This driver handles reset and clock control of the Microchip PolarFire SoC device. Signed-off-by: Padmarao Begari <[email protected]> Reviewed-by: Anup Patel <[email protected]> Tested-by: Bin Meng <[email protected]>
2021-01-12clk: move clk-ti-sci driver to 'ti' directoryDario Binacchi
The patch moves the clk-ti-sci.c file to the 'ti' directory along with all the other TI's drivers, and renames it clk-sci.c. Signed-off-by: Dario Binacchi <[email protected]>
2021-01-12clk: ti: add mux clock driverDario Binacchi
The driver manages a register-mapped multiplexer with multiple input clock signals or parents, one of which can be selected as output. It uses routines provided by the common clock framework (ccf). The code is based on the drivers/clk/ti/mux.c driver of the Linux kernel version 5.9-rc7. For DT binding details see: - Documentation/devicetree/bindings/clock/ti/mux.txt Signed-off-by: Dario Binacchi <[email protected]>
2020-09-30clk: add clock driver for SCMI agentsEtienne Carriere
This change introduces a clock driver for SCMI agent devices. When SCMI agent and SCMI clock drivers are enabled, SCMI agent binds a clock device for each SCMI clock protocol devices enabled in the FDT. SCMI clock driver is embedded upon CONFIG_CLK_SCMI=y. If enabled, CONFIG_SCMI_AGENT is also enabled. SCMI Clock protocol is defined in the SCMI specification [1]. Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi Signed-off-by: Etienne Carriere <[email protected]> Cc: Lukasz Majewski <[email protected]> Cc: Simon Glass <[email protected]> Cc: Peng Fan <[email protected]> Cc: Sudeep Holla <[email protected]> Reviewed-by: Simon Glass <[email protected]>
2020-08-03clk: clk_octeon: Add simple MIPS Octeon clock driverStefan Roese
This patch adds a simple clock driver for the Marvell Octeon MIPS SoC family. Its for IO clock rate passing via DT in some of the Octeon driver, like I2C. So that we don't need to use the non-mainline API octeon_get_io_clock(). Signed-off-by: Stefan Roese <[email protected]> Cc: Lukasz Majewski <[email protected]>
2020-07-01clk: Add K210 pll supportSean Anderson
This pll code is primarily based on the code from the kendryte standalone sdk in lib/drivers/sysctl.c. k210_pll_calc_config is roughly analogous to the algorithm used to set the pll frequency, but it has been completely rewritten to be fixed-point based. Signed-off-by: Sean Anderson <[email protected]> CC: Lukasz Majewski <[email protected]>
2020-05-13CLK: ARC: HSDK: add separate clock map for HSDK-4xDEugeniy Paltsev
HSDK and HSDK-4xD clock trees are slightly different. commit 1dfb2ec0d7fb ("ARC: HSDK: CGU: add support for timer clock") introduce regression for HSDK board cause crash when setting tunnel clock. Fix that. Fixes: 1dfb2ec0d7fb ("ARC: HSDK: CGU: add support for timer clock") Signed-off-by: Eugeniy Paltsev <[email protected]> Signed-off-by: Alexey Brodkin <[email protected]>
2020-02-07x86: Add a clock driver for Intel devicesSimon Glass
So far we have avoided adding a clock driver for Intel devices. But the Designware I2C driver needs a different clock (133MHz) on Intel devices than on others (166MHz). Add a simple driver that provides this information. This driver can be expanded later as needed. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]>
2019-10-11clk: cdce9xx: add support for cdce9xx clock synthesizerTero Kristo
Add support for CDCE913/925/937/949 family of devices. These are modular PLL-based low cost, high performance, programmable clock synthesizers, multipliers and dividers. They generate up to 9 output clocks from a single input frequency. The initial version of the driver does not support programming of the PLLs, and thus they run in the bypass mode only. The code is loosely based on the linux kernel cdce9xx driver. Signed-off-by: Tero Kristo <[email protected]>
2019-10-08clk: versal: Add clock driver supportSiva Durga Prasad Paladugu
This patch adds clock driver support for Versal platform. The clock driver queries and performs clock operations using PLM firmware by communicating with it using SMC calls. Signed-off-by: Siva Durga Prasad Paladugu <[email protected]> Signed-off-by: Michal Simek <[email protected]>
2019-10-08zynqmp: firmware: Add Xilinx ZynqMP firmware driverRajan Vaja
Add simple ZynqMP firmware drive to populate child nodes under zynqmp_firmware DT node. Signed-off-by: Rajan Vaja <[email protected]> Signed-off-by: Michal Simek <[email protected]>
2019-08-26Kconfig: Varios: Fix more SPL, TPL dependenciesAdam Ford
Several options are presenting themselves on a various boards where the options are clearly not used. (ie, SPL/TPL options when SPL or TPL are not defined) This patch is not attempting to be a complete list of items, but more like low hanging fruit. In some instances, I wasn't sure of DM was required, so I simply made them SPL or TPL. This patch attempts to reduce some of the menuconfig noise by defining dependencies so they don't appear when not used. Signed-off-by: Adam Ford <[email protected]>
2019-08-22clk: imx: expose CCF entry for allPeng Fan
Expose CCF entry, then we could avoid expand the SoC support list Signed-off-by: Peng Fan <[email protected]>
2019-07-31clk: add composite clk supportPeng Fan
Import clk composite clk support from Linux Kernel 5.1-rc5 Signed-off-by: Peng Fan <[email protected]>
2019-07-27Merge tag 'u-boot-imx-20190719' of ↵Tom Rini
https://gitlab.denx.de/u-boot/custodians/u-boot-imx u-boot-imx-20190719 - CCF for i.MX6 - nandbcb command to write SPL into NAND - Switch to DM (i.MX28) - Boards: Toradex, engicam, DH - Fixes for i.MX8 - Fixes for i.MX7ULP Travis: https://travis-ci.org/sbabic/u-boot-imx/builds/561147504
2019-07-19clk: sandbox: Add sandbox test code for Common Clock Framework [CCF]Lukasz Majewski
This patch provides code to implement the CCF clock tree in sandbox. It uses all the introduced primitives; some generic ones are reused, some sandbox specific were developed. In that way (after introducing the real CCF tree in sandbox) the recently added to clk-uclass.c: clk_get_by_id() and clk_get_parent_rate() are tested in their natural work environment. Usage (sandbox_defconfig and sandbox_flattree_defconfig): ./u-boot --fdt arch/sandbox/dts/test.dtb --command "ut dm clk_ccf" Signed-off-by: Lukasz Majewski <[email protected]>
2019-07-19clk: Port Linux common clock framework [CCF] for imx6q to U-boot (tag: v5.1.12)Lukasz Majewski
This patch brings the files from Linux kernel (linux-stable/linux-5.1.y SHA1: 5752b50477da)to provide clocks support as it is used on the Linux kernel with Common Clock Framework [CCF] setup. The directory structure has been preserved. The ported code only supports reading information from PLL, MUX, Divider, etc and enabling/disabling the clocks USDHCx/ECSPIx depending on used bus. Moreover, it is agnostic to the alias numbering as the information about the clock is read from the device tree. One needs to pay attention to the comments indicating necessary for U-Boot's driver model changes. If needed, the code can be extended to support the "set" part of the clock management. Signed-off-by: Lukasz Majewski <[email protected]>