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| author | Tyler Baker <tyler.baker@linaro.org> | 2014-11-18 11:10:53 -0800 |
|---|---|---|
| committer | Kevin Hilman <khilman@linaro.org> | 2014-11-19 09:35:17 -0800 |
| commit | 49e41938f8a53d01d1c5d133a038acb9650008f9 (patch) | |
| tree | e674598dec5201481255322593c4b062a3ca933f | |
| parent | 4a8ab7713bcc8504228784b7796ae6d5089acd66 (diff) | |
| download | squashfs-lz4-49e41938f8a53d01d1c5d133a038acb9650008f9.tar.gz | |
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>
| -rw-r--r-- | arch/arm/configs/multi_v7_defconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 3487046d8a784..9d7a32f93fcf2 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 |