00067ca533
Add a simple custom voltage regulator coupler for Exynos5800 SoCs, which require coupling between "vdd_arm" and "vdd_int" regulators. This coupler ensures that the voltage values don't go below the bootloader-selected operation point during the boot process until the clients set their constraints. It is achieved by assuming minimal voltage value equal to the current value if no constraints are set. This also ensures proper voltage balancing if any of the client driver is missing. The balancing code comes from the regulator/core.c with the additional logic for handling regulators without client constraints applied added. Link: https://lore.kernel.org/r/20200721180900.13844-5-krzk@kernel.org Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# Samsung SoC drivers
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#
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menuconfig SOC_SAMSUNG
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bool "Samsung SoC driver support" if COMPILE_TEST
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if SOC_SAMSUNG
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config EXYNOS_ASV
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bool "Exynos Adaptive Supply Voltage support" if COMPILE_TEST
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depends on (ARCH_EXYNOS && EXYNOS_CHIPID) || COMPILE_TEST
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select EXYNOS_ASV_ARM if ARM && ARCH_EXYNOS
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# There is no need to enable these drivers for ARMv8
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config EXYNOS_ASV_ARM
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bool "Exynos ASV ARMv7-specific driver extensions" if COMPILE_TEST
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depends on EXYNOS_ASV
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config EXYNOS_CHIPID
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bool "Exynos Chipid controller driver" if COMPILE_TEST
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depends on ARCH_EXYNOS || COMPILE_TEST
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select MFD_SYSCON
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select SOC_BUS
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config EXYNOS_PMU
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bool "Exynos PMU controller driver" if COMPILE_TEST
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depends on ARCH_EXYNOS || ((ARM || ARM64) && COMPILE_TEST)
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select EXYNOS_PMU_ARM_DRIVERS if ARM && ARCH_EXYNOS
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# There is no need to enable these drivers for ARMv8
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config EXYNOS_PMU_ARM_DRIVERS
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bool "Exynos PMU ARMv7-specific driver extensions" if COMPILE_TEST
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depends on EXYNOS_PMU
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config EXYNOS_PM_DOMAINS
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bool "Exynos PM domains" if COMPILE_TEST
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depends on PM_GENERIC_DOMAINS || COMPILE_TEST
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config EXYNOS_REGULATOR_COUPLER
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bool "Exynos SoC Regulator Coupler" if COMPILE_TEST
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depends on ARCH_EXYNOS || COMPILE_TEST
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endif
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