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authorTyler Baker <tyler.baker@linaro.org>2014-11-18 11:10:53 -0800
committerKevin Hilman <khilman@linaro.org>2014-11-19 09:35:17 -0800
commit49e41938f8a53d01d1c5d133a038acb9650008f9 (patch)
treee674598dec5201481255322593c4b062a3ca933f /arch
parent4a8ab7713bcc8504228784b7796ae6d5089acd66 (diff)
downloadlinux-49e41938f8a53d01d1c5d133a038acb9650008f9.tar.bz2
ARM: multi_v7_defconfig: fix failure setting CPU voltage by enabling dependent I2C controller
This patch fixes a long standing issue introduced during the 3.16 merge window. Shortly after the merge, exynos5250-based arndale boards began to produce the following errors: kern.err kernel: exynos-cpufreq exynos-cpufreq: failed to set cpu voltage kern.err kernel: cpufreq: __target_index: Failed to change cpu frequency: -22 Further analysis revealed that the S5M8767 voltage regulator used on the exynos5250-based arndale board utilizes the S3C2410 I2C controller. If the S3C2410 I2C controller driver is not enabled, the S5M8767 voltage regulator fails to probe. Therefore a dependency exists between these two drivers. In the exynos_defconfig both CONFIG_REGULATOR_S5M8767 and CONFIG_I2C_S3C2410 options are enabled, and no errors are produced. However, in the multi_v7_defconfig only the CONFIG_REGULATOR_S5M8767 option is enabled and the errors are present. So let's enable the CONFIG_I2C_S3C2410 option in the multi_v7_defconfig to allow the S5M8767 voltage regulator to probe. Signed-off-by: Tyler Baker <tyler.baker@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/configs/multi_v7_defconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig
index 3487046d8a78..9d7a32f93fcf 100644
--- a/arch/arm/configs/multi_v7_defconfig
+++ b/arch/arm/configs/multi_v7_defconfig
@@ -217,6 +217,7 @@ CONFIG_I2C_CADENCE=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
CONFIG_I2C_EXYNOS5=y
CONFIG_I2C_MV64XXX=y
+CONFIG_I2C_S3C2410=y
CONFIG_I2C_SIRF=y
CONFIG_I2C_TEGRA=y
CONFIG_I2C_ST=y