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d91612d7f0
The RTC power domain in sun6i and newer SoCs manages the 16 MHz RC oscillator (called "IOSC" or "osc16M") and the optional 32 kHz crystal oscillator (called "LOSC" or "osc32k"). Starting with the H6, this power domain also handles the 24 MHz DCXO (called variously "HOSC", "dcxo24M", or "osc24M") as well. The H6 also adds a calibration circuit for IOSC. Later SoCs introduce further variations on the design: - H616 adds an additional mux for the 32 kHz fanout source. - R329 adds an additional mux for the RTC timekeeping clock, a clock for the SPI bus between power domains inside the RTC, and removes the IOSC calibration functionality. Take advantage of the CCU framework to handle this increased complexity. This driver is intended to be a drop-in replacement for the existing RTC clock provider. So some runtime adjustment of the clock parents is needed, both to handle hardware differences, and to support the old binding which omitted some of the input clocks. Signed-off-by: Samuel Holland <samuel@sholland.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220203021736.13434-6-samuel@sholland.org
120 lines
3.2 KiB
Text
120 lines
3.2 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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config SUNXI_CCU
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tristate "Clock support for Allwinner SoCs"
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depends on ARCH_SUNXI || COMPILE_TEST
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select RESET_CONTROLLER
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default ARCH_SUNXI
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if SUNXI_CCU
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config SUNIV_F1C100S_CCU
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tristate "Support for the Allwinner newer F1C100s CCU"
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default MACH_SUNIV
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depends on MACH_SUNIV || COMPILE_TEST
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config SUN20I_D1_CCU
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tristate "Support for the Allwinner D1 CCU"
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default RISCV && ARCH_SUNXI
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depends on (RISCV && ARCH_SUNXI) || COMPILE_TEST
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config SUN20I_D1_R_CCU
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tristate "Support for the Allwinner D1 PRCM CCU"
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default RISCV && ARCH_SUNXI
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depends on (RISCV && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_A64_CCU
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tristate "Support for the Allwinner A64 CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_A100_CCU
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tristate "Support for the Allwinner A100 CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_A100_R_CCU
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tristate "Support for the Allwinner A100 PRCM CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_H6_CCU
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tristate "Support for the Allwinner H6 CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_H616_CCU
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tristate "Support for the Allwinner H616 CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN50I_H6_R_CCU
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tristate "Support for the Allwinner H6 and H616 PRCM CCU"
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default ARM64 && ARCH_SUNXI
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depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN4I_A10_CCU
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tristate "Support for the Allwinner A10/A20 CCU"
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default MACH_SUN4I
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default MACH_SUN7I
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depends on MACH_SUN4I || MACH_SUN7I || COMPILE_TEST
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config SUN5I_CCU
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bool "Support for the Allwinner sun5i family CCM"
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default MACH_SUN5I
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depends on MACH_SUN5I || COMPILE_TEST
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depends on SUNXI_CCU=y
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config SUN6I_A31_CCU
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tristate "Support for the Allwinner A31/A31s CCU"
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default MACH_SUN6I
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depends on MACH_SUN6I || COMPILE_TEST
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config SUN6I_RTC_CCU
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tristate "Support for the Allwinner H616/R329 RTC CCU"
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default ARCH_SUNXI
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depends on ARCH_SUNXI || COMPILE_TEST
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config SUN8I_A23_CCU
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tristate "Support for the Allwinner A23 CCU"
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default MACH_SUN8I
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depends on MACH_SUN8I || COMPILE_TEST
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config SUN8I_A33_CCU
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tristate "Support for the Allwinner A33 CCU"
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default MACH_SUN8I
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depends on MACH_SUN8I || COMPILE_TEST
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config SUN8I_A83T_CCU
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tristate "Support for the Allwinner A83T CCU"
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default MACH_SUN8I
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depends on MACH_SUN8I || COMPILE_TEST
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config SUN8I_H3_CCU
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tristate "Support for the Allwinner H3 CCU"
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default MACH_SUN8I || (ARM64 && ARCH_SUNXI)
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depends on MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
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config SUN8I_V3S_CCU
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tristate "Support for the Allwinner V3s CCU"
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default MACH_SUN8I
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depends on MACH_SUN8I || COMPILE_TEST
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config SUN8I_DE2_CCU
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tristate "Support for the Allwinner SoCs DE2 CCU"
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default MACH_SUN8I || (ARM64 && ARCH_SUNXI)
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config SUN8I_R40_CCU
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tristate "Support for the Allwinner R40 CCU"
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default MACH_SUN8I
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depends on MACH_SUN8I || COMPILE_TEST
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config SUN9I_A80_CCU
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tristate "Support for the Allwinner A80 CCU"
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default MACH_SUN9I
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depends on MACH_SUN9I || COMPILE_TEST
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config SUN8I_R_CCU
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tristate "Support for Allwinner SoCs' PRCM CCUs"
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default MACH_SUN8I || (ARCH_SUNXI && ARM64)
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endif
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