openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/drivers/clk/bcm/Kconfig

102 lines
2.9 KiB
Plaintext
Raw Normal View History

treewide: Add SPDX license identifier - Makefile/Kconfig Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-19 20:07:45 +08:00
# SPDX-License-Identifier: GPL-2.0-only
clk: bcm: Add BCM2711 DVP driver The HDMI block has a block that controls clocks and reset signals to the HDMI0 and HDMI1 controllers. Let's expose that through a clock driver implementing a clock and reset provider. Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-clk@vger.kernel.org Cc: devicetree@vger.kernel.org Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/bb60d97fc76b61c2eabef5a02ebd664c0f57ede0.1591867332.git-series.maxime@cerno.tech Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-06-11 17:23:16 +08:00
config CLK_BCM2711_DVP
tristate "Broadcom BCM2711 DVP support"
depends on ARCH_BCM2835 ||COMPILE_TEST
depends on COMMON_CLK
default ARCH_BCM2835
select RESET_SIMPLE
help
Enable common clock framework support for the Broadcom BCM2711
DVP Controller.
clk: bcm: Make BCM2835 clock drivers selectable Make the BCM2835 clock driver selectable by other architectures/platforms. ARCH_BRCMSTB will be selecting that driver in the next commit since new chips like 7211 use the same CPRMAN clock controller that this driver supports. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-10 04:29:55 +08:00
config CLK_BCM2835
bool "Broadcom BCM2835 clock support"
clk: bcm: Allow CLK_BCM2835 for ARCH_BRCMSTB ARCH_BRCMSTB needs to use the BCM2835 clock driver for chips like BCM7211 which adopted that clock controller, make that possible and the driver default to be enabled for ARCH_BRCMSTB. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-10 04:29:56 +08:00
depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
clk: bcm: Make BCM2835 clock drivers selectable Make the BCM2835 clock driver selectable by other architectures/platforms. ARCH_BRCMSTB will be selecting that driver in the next commit since new chips like 7211 use the same CPRMAN clock controller that this driver supports. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-10 04:29:55 +08:00
depends on COMMON_CLK
clk: bcm: Allow CLK_BCM2835 for ARCH_BRCMSTB ARCH_BRCMSTB needs to use the BCM2835 clock driver for chips like BCM7211 which adopted that clock controller, make that possible and the driver default to be enabled for ARCH_BRCMSTB. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-10 04:29:56 +08:00
default ARCH_BCM2835 || ARCH_BRCMSTB
clk: bcm: Make BCM2835 clock drivers selectable Make the BCM2835 clock driver selectable by other architectures/platforms. ARCH_BRCMSTB will be selecting that driver in the next commit since new chips like 7211 use the same CPRMAN clock controller that this driver supports. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-10 04:29:55 +08:00
help
Enable common clock framework support for Broadcom BCM2835
SoCs.
clk: bcm: Add BCM63138 clock support BCM63138 has a simple clocking domain which is primarily the ARMPLL clocking complex, from which the ARM (CPU), APB and AXI clocks would be derived from. Since the ARMPLL controller is entirely compatible with the iProc ARM PLL, we just initialize it without additional parameters. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 09:23:18 +08:00
config CLK_BCM_63XX
bool "Broadcom BCM63xx clock support"
depends on ARCH_BCM_63XX || COMPILE_TEST
select COMMON_CLK_IPROC
default ARCH_BCM_63XX
help
Enable common clock framework support for Broadcom BCM63xx DSL SoCs
based on the ARM architecture
clk: add BCM63XX gated clock controller driver Add a driver for the gated clock controller found on MIPS based BCM63XX SoCs. Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> [sboyd@kernel.org: Remove module.h include and associated things for a non-modular driver, add static on data tables, drop of_match_ptr() usage, fix spdx tag to be a C++ style comment] Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-05-02 20:26:56 +08:00
config CLK_BCM_63XX_GATE
bool "Broadcom BCM63xx gated clock support"
depends on BMIPS_GENERIC || COMPILE_TEST
default BMIPS_GENERIC
help
Enable common clock framework support for Broadcom BCM63xx DSL SoCs
based on the MIPS architecture
clk: bcm281xx: add initial clock framework support Add code for device tree support of clocks in the BCM281xx family of SoCs. Machines in this family use peripheral clocks implemented by "Kona" clock control units (CCUs). (Other Broadcom SoC families use Kona style CCUs as well, but support for them is not yet upstream.) A BCM281xx SoC has multiple CCUs, each of which manages a set of clocks on the SoC. A Kona peripheral clock is composite clock that may include a gate, a parent clock multiplexor, and zero, one or two dividers. There is a variety of gate types, and many gates implement hardware-managed gating (often called "auto-gating"). Most dividers divide their input clock signal by an integer value (one or more). There are also "fractional" dividers which allow division by non-integer values. To accomodate such dividers, clock rates and dividers are generally maintained by the code in "scaled" form, which allows integer and fractional dividers to be handled in a uniform way. If present, the gate for a Kona peripheral clock must be enabled when a change is made to its multiplexor or one of its dividers. Additionally, dividers and multiplexors have trigger registers which must be used whenever the divider value or selected parent clock is changed. The same trigger is often used for a divider and multiplexor, and a BCM281xx peripheral clock occasionally has two triggers. The gate, dividers, and parent clock selector are treated in this code as "components" of a peripheral clock. Their functionality is implemented directly--e.g. the common clock framework gate implementation is not used for a Kona peripheral clock gate. (This has being considered though, and the intention is to evolve this code to leverage common code as much as possible.) The source code is divided into three general portions: drivers/clk/bcm/clk-kona.h drivers/clk/bcm/clk-kona.c These implement the basic Kona clock functionality, including the clk_ops methods and various routines to manipulate registers and interpret their values. This includes some functions used to set clocks to a desired initial state (though this feature is only partially implemented here). drivers/clk/bcm/clk-kona-setup.c This contains generic run-time initialization code for data structures representing Kona CCUs and clocks. This encapsulates the clock structure initialization that can't be done statically. Note that there is a great deal of validity-checking code here, making explicit certain assumptions in the code. This is mostly useful for adding new clock definitions and could possibly be disabled for production use. drivers/clk/bcm/clk-bcm281xx.c This file defines the specific CCUs used by BCM281XX family SoCs, as well as the specific clocks implemented by each. It declares a device tree clock match entry for each CCU defined. include/dt-bindings/clock/bcm281xx.h This file defines the selector (index) values used to identify a particular clock provided by a CCU. It consists entirely of C preprocessor constants, to be used by both the C source and device tree source files. Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Matt Porter <mporter@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Matt Porter <mporter@linaro.org>
2014-02-15 02:29:18 +08:00
config CLK_BCM_KONA
bool "Broadcom Kona CCU clock support"
clk: Allow drivers to build if COMPILE_TEST is enabled These drivers only have runtime but no build time dependencies so can be built for testing purposes if the Kconfig COMPILE_TEST option is enabled. This is useful to have more build coverage and make sure that drivers are not affected by changes that could cause build regressions. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Acked-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-13 22:18:18 +08:00
depends on ARCH_BCM_MOBILE || COMPILE_TEST
clk: bcm: Make COMMON_CLK_IPROC into a library The broadcom clk driver Kconfig file selects and depends on the COMMON_CLK_IPROC config for different SoC specific drivers. Let's simplify this by always selecting the COMMON_CLK_IPROC config, turning it into a set of library code. We still want to retain the SoC specific options, so we leave those in place. Since we're here we also drop COMMON_CLK dependency because that's implicitly handled by including this file in drivers/clk/Kconfig in the right place and also make CLK_BCM_KONA default to y on the architecture it exists for instead of plain default y. Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <ray.jui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-24 06:41:59 +08:00
default ARCH_BCM_MOBILE
clk: bcm281xx: add initial clock framework support Add code for device tree support of clocks in the BCM281xx family of SoCs. Machines in this family use peripheral clocks implemented by "Kona" clock control units (CCUs). (Other Broadcom SoC families use Kona style CCUs as well, but support for them is not yet upstream.) A BCM281xx SoC has multiple CCUs, each of which manages a set of clocks on the SoC. A Kona peripheral clock is composite clock that may include a gate, a parent clock multiplexor, and zero, one or two dividers. There is a variety of gate types, and many gates implement hardware-managed gating (often called "auto-gating"). Most dividers divide their input clock signal by an integer value (one or more). There are also "fractional" dividers which allow division by non-integer values. To accomodate such dividers, clock rates and dividers are generally maintained by the code in "scaled" form, which allows integer and fractional dividers to be handled in a uniform way. If present, the gate for a Kona peripheral clock must be enabled when a change is made to its multiplexor or one of its dividers. Additionally, dividers and multiplexors have trigger registers which must be used whenever the divider value or selected parent clock is changed. The same trigger is often used for a divider and multiplexor, and a BCM281xx peripheral clock occasionally has two triggers. The gate, dividers, and parent clock selector are treated in this code as "components" of a peripheral clock. Their functionality is implemented directly--e.g. the common clock framework gate implementation is not used for a Kona peripheral clock gate. (This has being considered though, and the intention is to evolve this code to leverage common code as much as possible.) The source code is divided into three general portions: drivers/clk/bcm/clk-kona.h drivers/clk/bcm/clk-kona.c These implement the basic Kona clock functionality, including the clk_ops methods and various routines to manipulate registers and interpret their values. This includes some functions used to set clocks to a desired initial state (though this feature is only partially implemented here). drivers/clk/bcm/clk-kona-setup.c This contains generic run-time initialization code for data structures representing Kona CCUs and clocks. This encapsulates the clock structure initialization that can't be done statically. Note that there is a great deal of validity-checking code here, making explicit certain assumptions in the code. This is mostly useful for adding new clock definitions and could possibly be disabled for production use. drivers/clk/bcm/clk-bcm281xx.c This file defines the specific CCUs used by BCM281XX family SoCs, as well as the specific clocks implemented by each. It declares a device tree clock match entry for each CCU defined. include/dt-bindings/clock/bcm281xx.h This file defines the selector (index) values used to identify a particular clock provided by a CCU. It consists entirely of C preprocessor constants, to be used by both the C source and device tree source files. Signed-off-by: Alex Elder <elder@linaro.org> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Matt Porter <mporter@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Matt Porter <mporter@linaro.org>
2014-02-15 02:29:18 +08:00
help
Enable common clock framework support for Broadcom SoCs
using "Kona" style clock control units, including those
clk: bcm21664: use common clock framework Define the set of CCUs and provided clocks sufficient to satisfy the needs of all the existing clock references for BCM21664. Replace the "fake" fixed-rate clocks used previously with "real" ones. Note that only the minimal set of these clocks and CCUs is defined here. More clock definitions will need to be added as required by the addition of additional drivers. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-04-22 05:26:26 +08:00
in the BCM281xx and BCM21664 families.
clk: iproc: add initial common clock support This adds basic and generic support for various iProc PLLs and clocks including the ARMPLL, GENPLL, LCPLL, MIPIPLL, and ASIU clocks. SoCs under the iProc architecture can define their specific register offsets and clock parameters for their PLL and clock controllers. These parameters can be passed as arugments into the generic iProc PLL and clock setup functions Derived from code originally provided by Jonathan Richardson <jonathar@broadcom.com> Signed-off-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-05-06 02:13:19 +08:00
config COMMON_CLK_IPROC
clk: bcm: Make COMMON_CLK_IPROC into a library The broadcom clk driver Kconfig file selects and depends on the COMMON_CLK_IPROC config for different SoC specific drivers. Let's simplify this by always selecting the COMMON_CLK_IPROC config, turning it into a set of library code. We still want to retain the SoC specific options, so we leave those in place. Since we're here we also drop COMMON_CLK dependency because that's implicitly handled by including this file in drivers/clk/Kconfig in the right place and also make CLK_BCM_KONA default to y on the architecture it exists for instead of plain default y. Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <ray.jui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-24 06:41:59 +08:00
bool
clk: iproc: add initial common clock support This adds basic and generic support for various iProc PLLs and clocks including the ARMPLL, GENPLL, LCPLL, MIPIPLL, and ASIU clocks. SoCs under the iProc architecture can define their specific register offsets and clock parameters for their PLL and clock controllers. These parameters can be passed as arugments into the generic iProc PLL and clock setup functions Derived from code originally provided by Jonathan Richardson <jonathar@broadcom.com> Signed-off-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2015-05-06 02:13:19 +08:00
help
Enable common clock framework support for Broadcom SoCs
based on the iProc architecture
clk: iproc: Make clocks visible options Make the clocks visible options that can be selected by anyone. This avoids the problems of: 1) Select is a reverse dependency and is hard for people to understand and can sometimes be a pain to track down 2) Build coverage goes down because configs are hidden 3) Code bloat Patch suggested by Stephen Boyd Signed-off-by: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 04:44:10 +08:00
config CLK_BCM_CYGNUS
bool "Broadcom Cygnus clock support"
depends on ARCH_BCM_CYGNUS || COMPILE_TEST
clk: bcm: Make COMMON_CLK_IPROC into a library The broadcom clk driver Kconfig file selects and depends on the COMMON_CLK_IPROC config for different SoC specific drivers. Let's simplify this by always selecting the COMMON_CLK_IPROC config, turning it into a set of library code. We still want to retain the SoC specific options, so we leave those in place. Since we're here we also drop COMMON_CLK dependency because that's implicitly handled by including this file in drivers/clk/Kconfig in the right place and also make CLK_BCM_KONA default to y on the architecture it exists for instead of plain default y. Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <ray.jui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-24 06:41:59 +08:00
select COMMON_CLK_IPROC
clk: iproc: Make clocks visible options Make the clocks visible options that can be selected by anyone. This avoids the problems of: 1) Select is a reverse dependency and is hard for people to understand and can sometimes be a pain to track down 2) Build coverage goes down because configs are hidden 3) Code bloat Patch suggested by Stephen Boyd Signed-off-by: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 04:44:10 +08:00
default ARCH_BCM_CYGNUS
help
Enable common clock framework support for the Broadcom Cygnus SoC
clk: bcm: Add Broadcom Hurricane 2 clock support Add support for the Broadcom Hurricane 2 SoC clock controller. We can re-use the existing iProc clock library since the SoC's architecture is largely the same as its predecessors. For now, we just initialize the iProc ARM PLL. Acked-by: Jon Mason <jon.mason@broadcom.com> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
2017-09-29 07:14:57 +08:00
config CLK_BCM_HR2
bool "Broadcom Hurricane 2 clock support"
depends on ARCH_BCM_HR2 || COMPILE_TEST
select COMMON_CLK_IPROC
default ARCH_BCM_HR2
help
Enable common clock framework support for the Broadcom Hurricane 2
SoC
clk: iproc: Make clocks visible options Make the clocks visible options that can be selected by anyone. This avoids the problems of: 1) Select is a reverse dependency and is hard for people to understand and can sometimes be a pain to track down 2) Build coverage goes down because configs are hidden 3) Code bloat Patch suggested by Stephen Boyd Signed-off-by: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 04:44:10 +08:00
config CLK_BCM_NSP
bool "Broadcom Northstar/Northstar Plus clock support"
depends on ARCH_BCM_5301X || ARCH_BCM_NSP || COMPILE_TEST
clk: bcm: Make COMMON_CLK_IPROC into a library The broadcom clk driver Kconfig file selects and depends on the COMMON_CLK_IPROC config for different SoC specific drivers. Let's simplify this by always selecting the COMMON_CLK_IPROC config, turning it into a set of library code. We still want to retain the SoC specific options, so we leave those in place. Since we're here we also drop COMMON_CLK dependency because that's implicitly handled by including this file in drivers/clk/Kconfig in the right place and also make CLK_BCM_KONA default to y on the architecture it exists for instead of plain default y. Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <ray.jui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-24 06:41:59 +08:00
select COMMON_CLK_IPROC
clk: iproc: Make clocks visible options Make the clocks visible options that can be selected by anyone. This avoids the problems of: 1) Select is a reverse dependency and is hard for people to understand and can sometimes be a pain to track down 2) Build coverage goes down because configs are hidden 3) Code bloat Patch suggested by Stephen Boyd Signed-off-by: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 04:44:10 +08:00
default ARCH_BCM_5301X || ARCH_BCM_NSP
help
Enable common clock framework support for the Broadcom Northstar and
Northstar Plus SoCs
config CLK_BCM_NS2
bool "Broadcom Northstar 2 clock support"
depends on ARCH_BCM_IPROC || COMPILE_TEST
clk: bcm: Make COMMON_CLK_IPROC into a library The broadcom clk driver Kconfig file selects and depends on the COMMON_CLK_IPROC config for different SoC specific drivers. Let's simplify this by always selecting the COMMON_CLK_IPROC config, turning it into a set of library code. We still want to retain the SoC specific options, so we leave those in place. Since we're here we also drop COMMON_CLK dependency because that's implicitly handled by including this file in drivers/clk/Kconfig in the right place and also make CLK_BCM_KONA default to y on the architecture it exists for instead of plain default y. Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Ray Jui <ray.jui@broadcom.com> Cc: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-24 06:41:59 +08:00
select COMMON_CLK_IPROC
clk: iproc: Make clocks visible options Make the clocks visible options that can be selected by anyone. This avoids the problems of: 1) Select is a reverse dependency and is hard for people to understand and can sometimes be a pain to track down 2) Build coverage goes down because configs are hidden 3) Code bloat Patch suggested by Stephen Boyd Signed-off-by: Jon Mason <jonmason@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-10-30 04:44:10 +08:00
default ARCH_BCM_IPROC
help
Enable common clock framework support for the Broadcom Northstar 2 SoC
clk: bcm: Add clocks for Stingray SOC This patch adds support for Stingray clocks in iproc ccf. The Stingray SOC has various plls based on iproc pll architecture. Signed-off-by: Sandeep Tripathy <sandeep.tripathy@broadcom.com> Signed-off-by: Anup Patel <anup.patel@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-06-06 12:23:58 +08:00
config CLK_BCM_SR
bool "Broadcom Stingray clock support"
depends on ARCH_BCM_IPROC || COMPILE_TEST
select COMMON_CLK_IPROC
default ARCH_BCM_IPROC
help
Enable common clock framework support for the Broadcom Stingray SoC
clk: bcm283x: add driver interfacing with Raspberry Pi's firmware Raspberry Pi's firmware offers an interface though which update it's clock's frequencies. This is specially useful in order to change the CPU clock (pllb_arm) which is 'owned' by the firmware and we're unable to scale using the register interface provided by clk-bcm2835. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Acked-by: Eric Anholt <eric@anholt.net> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-06-13 02:24:54 +08:00
config CLK_RASPBERRYPI
tristate "Raspberry Pi firmware based clock support"
depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
help
Enable common clock framework support for Raspberry Pi's firmware
dependent clocks