diff options
| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-02-10 02:36:36 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2018-03-08 16:08:20 +0100 |
| commit | 1c3389e6cb99d36196df322dd40aa73cd06f983b (patch) | |
| tree | 1574348875f3e21899baa011efeb17fce79c423e /arch/arm/boot/dts/tegra124-apalis-eval.dts | |
| parent | 1014e895f808f144d91e06815175648b4ae14c0a (diff) | |
| download | lwn-1c3389e6cb99d36196df322dd40aa73cd06f983b.tar.gz lwn-1c3389e6cb99d36196df322dd40aa73cd06f983b.zip | |
ARM: tegra: Fix I2C bus frequencies on Apalis/Colibri
Use a faster speed of 400 kbit/s for regular I2C busses.
Use a slower speed of 10 kbit/s for DDC/EDID to improve reliability.
Use a slower speed of 100 kbit/s for power I2C to be within specs of
the LM95245 temperature sensor.
While at it further annotate I2C pin usage.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm/boot/dts/tegra124-apalis-eval.dts')
| -rw-r--r-- | arch/arm/boot/dts/tegra124-apalis-eval.dts | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arm/boot/dts/tegra124-apalis-eval.dts b/arch/arm/boot/dts/tegra124-apalis-eval.dts index ecffcd115fa7..66b6c45ee865 100644 --- a/arch/arm/boot/dts/tegra124-apalis-eval.dts +++ b/arch/arm/boot/dts/tegra124-apalis-eval.dts @@ -105,7 +105,7 @@ */ i2c@7000c000 { status = "okay"; - clock-frequency = <100000>; + clock-frequency = <400000>; pcie-switch@58 { compatible = "plx,pex8605"; @@ -124,7 +124,6 @@ */ hdmi_ddc: i2c@7000c400 { status = "okay"; - clock-frequency = <100000>; }; /* @@ -133,7 +132,7 @@ */ i2c@7000c500 { status = "okay"; - clock-frequency = <100000>; + clock-frequency = <400000>; }; /* I2C4 (DDC): unused */ |