linux/drivers/clk/meson/Kconfig

config COMMON_CLK_AMLOGIC
	bool
	depends on OF
	depends on ARCH_MESON || COMPILE_TEST

config COMMON_CLK_REGMAP_MESON
	bool
	select REGMAP

config COMMON_CLK_MESON8B
	bool
	depends on COMMON_CLK_AMLOGIC
	select RESET_CONTROLLER
	select COMMON_CLK_REGMAP_MESON
	help
	  Support for the clock controller on AmLogic S802 (Meson8),
	  S805 (Meson8b) and S812 (Meson8m2) devices. Say Y if you
	  want peripherals and CPU frequency scaling to work.

config COMMON_CLK_GXBB
	bool
	depends on COMMON_CLK_AMLOGIC
	select RESET_CONTROLLER
	select COMMON_CLK_REGMAP_MESON
	select MFD_SYSCON
	help
	  Support for the clock controller on AmLogic S905 devices, aka gxbb.
	  Say Y if you want peripherals and CPU frequency scaling to work.

config COMMON_CLK_AXG
	bool
	depends on COMMON_CLK_AMLOGIC
	select RESET_CONTROLLER
	select COMMON_CLK_REGMAP_MESON
	select MFD_SYSCON
	help
	  Support for the clock controller on AmLogic A113D devices, aka axg.
	  Say Y if you want peripherals and CPU frequency scaling to work.
clk: meson: only build selected platforms Break the AmLogic clock code up so that only the necessary parts are compiled and linked. The core code is selected by both arm and arm64 builds with COMMON_CLK_AMLOGIC. The individual drivers have their own config options as well. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> 2016-05-23 21:29:13 +00:00			`config COMMON_CLK_AMLOGIC`
			`bool`
			`depends on OF`
			`depends on ARCH_MESON \|\| COMPILE_TEST`

clk: meson: add regmap clocks Meson clock controllers need to move the classical iomem registers to regmap. This is triggered because the HHI controllers found on the GXBB and GXL host more than just clocks. To properly handle this, we would like to migrate HHI to syscon. Also GXBB AO clock controller already use regmap, AXG AO and Audio clock controllers will as well. The purpose of this change is to provide a common structure to these meson controllers (and possibly others) for regmap based clocks. This change provides the basic gate, mux and divider, based on the helpers provided by the related generic clocks Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:32 +00:00			`config COMMON_CLK_REGMAP_MESON`
			`bool`
			`select REGMAP`

clk: meson: only build selected platforms Break the AmLogic clock code up so that only the necessary parts are compiled and linked. The core code is selected by both arm and arm64 builds with COMMON_CLK_AMLOGIC. The individual drivers have their own config options as well. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> 2016-05-23 21:29:13 +00:00			`config COMMON_CLK_MESON8B`
			`bool`
			`depends on COMMON_CLK_AMLOGIC`
clk: meson: meson8b: register the built-in reset controller The clock controller also includes some reset lines. This patch implements a reset controller to assert and de-assert these resets. The reset controller itself is registered early (through CLK_OF_DECLARE_DRIVER) because it is needed very early in the boot process (to start the secondary CPU cores). According to the public S805 datasheet there are two more reset bits in the HHI_SYS_CPU_CLK_CNTL0 register, which are not implemented by this patch (as these seem to be unused in Amlogic's vendor Linux kernel sources and their u-boot tree): - bit 15: GEN_DIV_SOFT_RESET - bit 14: SOFT_RESET All information was taken from the public S805 Datasheet and Amlogic's vendor GPL kernel sources. This patch is based on an earlier version submitted by Carlo Caione. Suggested-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2017-07-28 21:13:12 +00:00			`select RESET_CONTROLLER`
clk: meson: migrate gates to clk_regmap Move meson8b, gxbb and axg clocks using clk_gate to clk_regmap Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:36 +00:00			`select COMMON_CLK_REGMAP_MESON`
clk: meson: only build selected platforms Break the AmLogic clock code up so that only the necessary parts are compiled and linked. The core code is selected by both arm and arm64 builds with COMMON_CLK_AMLOGIC. The individual drivers have their own config options as well. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> 2016-05-23 21:29:13 +00:00			`help`
clk: meson: meson8b: add compatibles for Meson8 and Meson8m2 The clock controller on Meson8, Meson8b and Meson8m2 is very similar based on the code from the Amlogic GPL kernel sources. Add separate compatibles for each SoC to make sure that we can easily implement all the small differences for each SoC later on. In general the Meson8 and Meson8m2 seem to be almost identical as they even share the same mach-meson8 directory in Amlogic's GPL kernel sources. The main clocks on Meson8, Meson8b and Meson8m2 are very similar, because they are all using the same PLL values, 90% of the clock gates are the same (the actual diffstat of the mach-meson8/clock.c and mach-meson8b/clock.c files is around 30 to 40 lines, when excluding all commented out code). The difference between the Meson8 and Meson8b clock gates seem to be: - Meson8 has AIU_PCLK, HDMI_RX, VCLK2_ENCT, VCLK2_ENCL, UART3, CSI_DIG_CLKIN gates which don't seem to be available on Meson8b - the gate on Meson8 for bit 7 seems to be named "_1200XXX" instead of "PERIPHS_TOP" (on Meson8b) - Meson8b has a SANA gate which doesn't seem to exist on Meson8 (or on Meson8 the same bit is used by the UART3 gate in Amlogic's GPL kernel sources) None of these gates is added for now, since it's unclear whether these definitions are actually correct (the VCLK2_ENCT gate for example is defined, but only used in some commented block). The main difference between all three SoCs seem to be the video (VPU) clocks. Apart from different supported clock rates (according to vpu.c in mach-meson8 and mach-meson8b from Amlogic's GPL kernel sources) the most notable difference is that Meson8m2 has a GP_PLL clock and a mux (probably the same as on the Meson GX SoCs) to support glitch-free (clock rate) switching. None of these VPU clocks are not supported by our mainline meson8b clock driver yet though. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> 2017-06-04 18:33:39 +00:00			`Support for the clock controller on AmLogic S802 (Meson8),`
			`S805 (Meson8b) and S812 (Meson8m2) devices. Say Y if you`
			`want peripherals and CPU frequency scaling to work.`
clk: gxbb: add AmLogic GXBB clk controller driver The gxbb clock controller is the primary clock generation unit for the AmLogic GXBB SoC. It is clocked by a fixed 24MHz xtal, contains several PLLs and the usual post-dividers, muxes, dividers and leaf gates that are fed into various IP blocks in the SoC. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> 2016-05-23 22:44:26 +00:00
			`config COMMON_CLK_GXBB`
			`bool`
			`depends on COMMON_CLK_AMLOGIC`
clk: meson: gxbb: fix build error without RESET_CONTROLLER With CONFIG_RESET_CONTROLLER=n we see the following link error in the meson gxbb clk driver: drivers/built-in.o: In function 'gxbb_aoclkc_probe': drivers/clk/meson/gxbb-aoclk.c:161: undefined reference to 'devm_reset_controller_register' Fix this by selecting the reset controller subsystem. Fixes: f8c11f79912d ("clk: meson: Add GXBB AO Clock and Reset controller driver") Signed-off-by: Tobias Regnery <tobias.regnery@gmail.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> [narmstrong: Added fixes-by tag] Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2017-04-24 10:05:42 +00:00			`select RESET_CONTROLLER`
clk: meson: switch gxbb ao_clk to clk_regmap Drop the gxbb ao specific regmap based clock and use the meson clk_regmap based clock instead. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:33 +00:00			`select COMMON_CLK_REGMAP_MESON`
clk: meson: use hhi syscon if available On gxbb and axg, try to get the hhi regmap from the parent DT node, which should be the HHI system controller once the necessary changes have been made in amlogic's DTs Until then, if getting regmap through the system controller fails, the clock controller will fall back to the old way, requesting memory region directly and then registering the regmap itself. This should allow a smooth transition to syscon Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:46 +00:00			`select MFD_SYSCON`
clk: gxbb: add AmLogic GXBB clk controller driver The gxbb clock controller is the primary clock generation unit for the AmLogic GXBB SoC. It is clocked by a fixed 24MHz xtal, contains several PLLs and the usual post-dividers, muxes, dividers and leaf gates that are fed into various IP blocks in the SoC. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> 2016-05-23 22:44:26 +00:00			`help`
			`Support for the clock controller on AmLogic S905 devices, aka gxbb.`
			`Say Y if you want peripherals and CPU frequency scaling to work.`
clk: meson-axg: add clock controller drivers Add clock controller drivers for Amlogic Meson-AXG SoC. Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Qiufang Dai <qiufang.dai@amlogic.com> Signed-off-by: Yixun Lan <yixun.lan@amlogic.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> 2017-12-11 14:13:46 +00:00
			`config COMMON_CLK_AXG`
			`bool`
			`depends on COMMON_CLK_AMLOGIC`
			`select RESET_CONTROLLER`
clk: meson: migrate gates to clk_regmap Move meson8b, gxbb and axg clocks using clk_gate to clk_regmap Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:36 +00:00			`select COMMON_CLK_REGMAP_MESON`
clk: meson: use hhi syscon if available On gxbb and axg, try to get the hhi regmap from the parent DT node, which should be the HHI system controller once the necessary changes have been made in amlogic's DTs Until then, if getting regmap through the system controller fails, the clock controller will fall back to the old way, requesting memory region directly and then registering the regmap itself. This should allow a smooth transition to syscon Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 2018-02-12 14:58:46 +00:00			`select MFD_SYSCON`
clk: meson-axg: add clock controller drivers Add clock controller drivers for Amlogic Meson-AXG SoC. Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Qiufang Dai <qiufang.dai@amlogic.com> Signed-off-by: Yixun Lan <yixun.lan@amlogic.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> 2017-12-11 14:13:46 +00:00			`help`
			`Support for the clock controller on AmLogic A113D devices, aka axg.`
			`Say Y if you want peripherals and CPU frequency scaling to work.`