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| author | Tyler Baker <[email protected]> | 2014-11-18 19:10:53 +0000 |
|---|---|---|
| committer | Kevin Hilman <[email protected]> | 2014-11-19 17:35:17 +0000 |
| commit | 49e41938f8a53d01d1c5d133a038acb9650008f9 (patch) | |
| tree | e674598dec5201481255322593c4b062a3ca933f /drivers/tty/serial/sccnxp.c | |
| parent | Merge tag 'tegra-for-3.18-fixes-for-rc5' of git://git.kernel.org/pub/scm/linu... (diff) | |
| download | kernel-49e41938f8a53d01d1c5d133a038acb9650008f9.tar.gz kernel-49e41938f8a53d01d1c5d133a038acb9650008f9.zip | |
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 <[email protected]>
Acked-by: Kukjin Kim <[email protected]>
Signed-off-by: Kevin Hilman <[email protected]>
Diffstat (limited to 'drivers/tty/serial/sccnxp.c')
0 files changed, 0 insertions, 0 deletions