Commit 23c8ebc9 authored by Anirudh Srinivasan's avatar Anirudh Srinivasan Committed by Drew Fustini
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clk: tenstorrent: Add Atlantis clock controller driver 



Add driver for clock controller in Tenstorrent Atlantis SoC. This version
of the driver covers clocks from RCPU subsystem.

5 types of clocks generated by this controller: PLLs (PLLs
with bypass functionality and an additional Gate clk at output), Shared
Gates (Multiple Gate clks that share an enable bit), standard Muxes,
Dividers and Gates. All clocks are implemented using custom clk ops and
use the regmap interface associated with the syscon. All clocks are derived
from a 24 Mhz oscillator.

The reset controller is also setup as an auxiliary device of the clock
controller.

Signed-off-by: default avatarAnirudh Srinivasan <asrinivasan@oss.tenstorrent.com>
Reviewed-by: default avatarBrian Masney <bmasney@redhat.com>
Reviewed-by: default avatarDrew Fustini <fustini@kernel.org>
Signed-off-by: default avatarDrew Fustini <fustini@kernel.org>
parent 89b23af1

MAINTAINERS

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@@ -22812,6 +22812,7 @@ T: git https://github.com/tenstorrent/linux.git 
F:	Documentation/devicetree/bindings/clock/tenstorrent,atlantis-prcm-rcpu.yaml

F:	Documentation/devicetree/bindings/riscv/tenstorrent.yaml

F:	arch/riscv/boot/dts/tenstorrent/

F:	drivers/clk/tenstorrent/

F:	drivers/reset/reset-tenstorrent-atlantis.c

F:	include/dt-bindings/clock/tenstorrent,atlantis-prcm-rcpu.h

























drivers/clk/Kconfig



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@@ -531,6 +531,7 @@ source "drivers/clk/starfive/Kconfig"







source "drivers/clk/sunxi/Kconfig"









source "drivers/clk/sunxi-ng/Kconfig"









source "drivers/clk/tegra/Kconfig"









source "drivers/clk/tenstorrent/Kconfig"









source "drivers/clk/thead/Kconfig"









source "drivers/clk/stm32/Kconfig"









source "drivers/clk/ti/Kconfig"
































drivers/clk/Makefile



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@@ -155,6 +155,7 @@ obj-y					+= starfive/







obj-$(CONFIG_ARCH_SUNXI)		+= sunxi/









obj-y					+= sunxi-ng/









obj-$(CONFIG_ARCH_TEGRA)		+= tegra/









obj-y					+= tenstorrent/









obj-$(CONFIG_ARCH_THEAD)		+= thead/









obj-y					+= ti/









obj-$(CONFIG_CLK_UNIPHIER)		+= uniphier/
































drivers/clk/tenstorrent/Kconfig
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# SPDX-License-Identifier: GPL-2.0-only



















config TENSTORRENT_ATLANTIS_PRCM









	tristate "Support for Tenstorrent Atlantis PRCM Clock Controller"









	depends on ARCH_TENSTORRENT || COMPILE_TEST









	default ARCH_TENSTORRENT









	select REGMAP_MMIO









	select AUXILIARY_BUS









	select MFD_SYSCON









	help









	  Say yes here to support the different clock









	  controllers found in the Tenstorrent Atlantis SoC.









	  This includes the clocks from the RCPU, HSIO, MMIO









	  and PCIE domain.
























drivers/clk/tenstorrent/Makefile
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# SPDX-License-Identifier: GPL-2.0



















obj-$(CONFIG_TENSTORRENT_ATLANTIS_PRCM)	+= atlantis-prcm.o