diff options
| author |   Philippe Schenker <philippe.schenker@toradex.com> | 2022-05-06 15:24:04 +0200 |
|---|---|---|
| committer |   Shawn Guo <shawnguo@kernel.org> | 2022-05-07 09:52:53 +0800 |
| commit | 3f781d5c67f7f5763913cccb972598df19f80c06 (patch) | |
| tree | 4094fa5cbb16d511b122f4ba4f0e8a9cea68f119 /arch/arm/boot/dts/imx6ull-colibri.dtsi | |
| parent | ARM: dts: Add bosch acc board (diff) | |
| download | wireguard-linux-3f781d5c67f7f5763913cccb972598df19f80c06.tar.xz wireguard-linux-3f781d5c67f7f5763913cccb972598df19f80c06.zip | |
ARM: dts: imx6ull-colibri: use pull-down for adc pins
Disable the keeper and enable a 100k pull-down on the ADC pins as per
the following note in section 13.2 of the i.MX 6ULL Application
Processor Reference Manual, Rev. 1, 11/2017 [1]:
The keeper causes an undesired jump behavior in ADC. To avoid the
problem, disable keeper before starting ADC.
[1] https://www.nxp.com/webapp/Download?colCode=IMX6ULLRM
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/imx6ull-colibri.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx6ull-colibri.dtsi | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6ull-colibri.dtsi b/arch/arm/boot/dts/imx6ull-colibri.dtsi index 7f35a06dff95..84bb7574d211 100644 --- a/arch/arm/boot/dts/imx6ull-colibri.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri.dtsi @@ -52,6 +52,8 @@ &adc1 { num-channels = <10>; vref-supply = <®_module_3v3_avdd>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_adc1>; }; &can1 { @@ -214,6 +216,16 @@ }; &iomuxc { + + pinctrl_adc1: adc1grp { + fsl,pins = < + MX6UL_PAD_GPIO1_IO00__GPIO1_IO00 0x3000 /* SODIMM 8 */ + MX6UL_PAD_GPIO1_IO01__GPIO1_IO01 0x3000 /* SODIMM 6 */ + MX6UL_PAD_GPIO1_IO08__GPIO1_IO08 0x3000 /* SODIMM 4 */ + MX6UL_PAD_GPIO1_IO09__GPIO1_IO09 0x3000 /* SODIMM 2 */ + >; + }; + pinctrl_can_int: canint-grp { fsl,pins = < MX6UL_PAD_ENET1_TX_DATA1__GPIO2_IO04 0x13010 /* SODIMM 73 */ |