diff options
| author | Max Krummenacher <max.krummenacher@toradex.com> | 2018-07-24 14:29:32 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-12-24 01:27:33 +0100 |
| commit | ffccd571b7e0ac5e62d9866c5788533940b33068 (patch) | |
| tree | 911530e1b6dc5d239ac0796e35014366b803cee8 /arch | |
| parent | 689b98bd704bea0076b88eacfcf54b445cf9ef4c (diff) | |
imx6ull-colibri.dtsi: change touch i2c parameters
Switch on 22 kOhm pull ups and lower the I2C frequency to around 40kHz
to get a more reliable communication.
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/imx6ull-colibri.dtsi | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi index 75d959c64284..da1e67274309 100644 --- a/arch/arm/boot/dts/imx6ull-colibri.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi @@ -151,6 +151,8 @@ }; &i2c2 { + /* use low frequency to compensate for the high pull up values */ + clock-frequency = <40000>; pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c2>; pinctrl-1 = <&pinctrl_i2c2_gpio>; @@ -361,15 +363,15 @@ pinctrl_i2c2: i2c2grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001f8b0 >; }; pinctrl_i2c2_gpio: i2c2-gpio-grp { fsl,pins = < - MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001b8b0 - MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001b8b0 + MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x4001f8b0 + MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x4001f8b0 >; }; |