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ARM: dts: imx50-kobo-aura: Add Netronix embedded controller

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Enable the Netronix EC on the Kobo Aura ebook reader.

Several features are still missing:
 - Frontlight/backlight. The vendor kernel drives the frontlight LED
   using the PWM output of the EC and an additional boost pin that
   increases the brightness.
 - Battery monitoring
 - Interrupts for RTC alarm and low-battery events

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Jonathan Neuschäfer 2021-01-24 22:41:27 +01:00 committed by Shawn Guo
parent a38fd87484
commit ad28c3bd7e
1 changed files with 15 additions and 1 deletions
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16
arch/arm/boot/dts/imx50-kobo-aura.dts
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@ -143,10 +143,24 @@
pinctrl-0 = <&pinctrl_i2c3>;
status = "okay";
/* TODO: embedded controller at 0x43 */
embedded-controller@43 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_ec>;
compatible = "netronix,ntxec";
reg = <0x43>;
system-power-controller;
interrupts-extended = <&gpio4 11 IRQ_TYPE_EDGE_FALLING>;
#pwm-cells = <2>;
};
};
&iomuxc {
pinctrl_ec: ecgrp {
fsl,pins = <
MX50_PAD_CSPI_SS0__GPIO4_11 0x0 /* INT */
>;
};
pinctrl_gpiokeys: gpiokeysgrp {
fsl,pins = <
MX50_PAD_CSPI_MISO__GPIO4_10 0x0