From: Arnd Bergmann <arnd@xxxxxxxx> The two regulator drivers in the drivers/soc/ directory fail to build when regulator support is disabled: aarch64-linux-ld: drivers/soc/tegra/regulators-tegra20.o: in function `tegra20_regulator_reboot': regulators-tegra20.c:(.text.tegra20_regulator_reboot+0x4c): undefined reference to `regulator_sync_voltage_rdev' aarch64-linux-ld: regulators-tegra20.c:(.text.tegra20_regulator_reboot+0x58): undefined reference to `regulator_sync_voltage_rdev' aarch64-linux-ld: drivers/soc/tegra/regulators-tegra30.o: in function `tegra30_regulator_reboot': regulators-tegra30.c:(.text.tegra30_regulator_reboot+0x44): undefined reference to `regulator_sync_voltage_rdev' aarch64-linux-ld: regulators-tegra30.c:(.text.tegra30_regulator_reboot+0x50): undefined reference to `regulator_sync_voltage_rdev' Add a Kconfig dependency to avoid this configuration. Fixes: 496747e7d907 ("soc/tegra: regulators: Add regulators coupler for Tegra20") Fixes: 783807436f36 ("soc/tegra: regulators: Add regulators coupler for Tegra30") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/soc/tegra/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/soc/tegra/Kconfig b/drivers/soc/tegra/Kconfig index db49075b1946..c56122be27a9 100644 --- a/drivers/soc/tegra/Kconfig +++ b/drivers/soc/tegra/Kconfig @@ -153,8 +153,10 @@ config SOC_TEGRA_POWERGATE_BPMP config SOC_TEGRA20_VOLTAGE_COUPLER bool "Voltage scaling support for Tegra20 SoCs" + depends on REGULATOR depends on ARCH_TEGRA_2x_SOC || COMPILE_TEST config SOC_TEGRA30_VOLTAGE_COUPLER bool "Voltage scaling support for Tegra30 SoCs" + depends on REGULATOR depends on ARCH_TEGRA_3x_SOC || COMPILE_TEST -- 2.29.2