[PATCH v5 4/4] ARM: tegra: acer-a500: Add Embedded Controller

Dmitry Osipenko
2020-11-04T20:34:31Z

This patch adds device-tree node for the Embedded Controller which is
found on the Picasso board. The Embedded Controller itself is ENE KB930,
it provides functions like battery-gauge/LED/GPIO/etc and it uses firmware
that is specifically customized for the Acer A500 device.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra20-acer-a500-picasso.dts | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
index 5ab6872cd84c..3b9ac3324fd5 100644
--- a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
+++ b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
@@ -533,6 +533,16 @@ panel_ddc: i2c@1 {
reg = <1>;
#address-cells = <1>;
#size-cells = <0>;
+
+ embedded-controller@58 {
+ compatible = "acer,a500-iconia-ec", "ene,kb930";
+ reg = <0x58>;
+
+ system-power-controller;
+
+ monitored-battery = <&bat1010>;
+ power-supplies = <&mains>;
+ };
};
};

@@ -820,6 +830,13 @@ backlight: backlight {
default-brightness-level = <20>;
};

+ bat1010: battery-2s1p {
+ compatible = "simple-battery";
+ charge-full-design-microamp-hours = <3260000>;
+ energy-full-design-microwatt-hours = <24000000>;
+ operating-range-celsius = <0 40>;
+ };
+
/* PMIC has a built-in 32KHz oscillator which is used by PMC */
clk32k_in: clock@0 {
compatible = "fixed-clock";
--
2.27.0