linux_dsm_epyc7002/arch/arm/boot/dts/ste-href-tvk1281618.dtsi
Linus Walleij 7ba5dd5300 ARM: dts: ux500: configure the accelerometers open drain
Configure the two accelerometers sharing GPIO line 82 as:

- Open drain so that they can share the same interrupt line.

Configure the corresponding interrupt pin:

- Trigger on the falling edge since open drain implies that we
  do not actively drive the line high, but we will actively drive
  it low to generate interrupts and then it moves from high to low
  i.e. a falling edge.

- Pulled up so the line will be biased to high unless an IRQ
  is active on any device on the line, and thus it goes high
  again after the interrupt is deasserted.

Cc: linux-iio@vger.kernel.org
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-05-04 09:33:25 +02:00

255 lines
5.9 KiB
Plaintext

/*
* Copyright 2012 ST-Ericsson AB
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*
* Device Tree for the TVK1281618 UIB
*/
#include <dt-bindings/interrupt-controller/irq.h>
/ {
gpio_keys {
compatible = "gpio-keys";
#address-cells = <1>;
#size-cells = <0>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
pinctrl-names = "default";
pinctrl-0 = <&prox_tvk_mode>, <&hall_tvk_mode>;
button@139 {
/* Proximity sensor */
gpios = <&gpio6 25 GPIO_ACTIVE_HIGH>;
linux,code = <11>; /* SW_FRONT_PROXIMITY */
label = "SFH7741 Proximity Sensor";
};
button@145 {
/* Hall sensor */
gpios = <&gpio4 17 GPIO_ACTIVE_HIGH>;
linux,code = <0>; /* SW_LID */
label = "HED54XXU11 Hall Effect Sensor";
};
};
soc {
i2c@80004000 {
tc35893@44 {
compatible = "toshiba,tc35893";
reg = <0x44>;
interrupt-parent = <&gpio6>;
interrupts = <26 IRQ_TYPE_EDGE_RISING>;
pinctrl-names = "default";
pinctrl-0 = <&tc35893_tvk_mode>;
interrupt-controller;
#interrupt-cells = <1>;
tc3589x_gpio {
compatible = "toshiba,tc3589x-gpio";
interrupts = <0>;
interrupt-controller;
#interrupt-cells = <2>;
gpio-controller;
#gpio-cells = <2>;
};
tc3589x_keypad {
compatible = "toshiba,tc3589x-keypad";
interrupts = <6>;
debounce-delay-ms = <4>;
keypad,num-columns = <8>;
keypad,num-rows = <8>;
linux,no-autorepeat;
wakeup-source;
linux,keymap = <0x0301006b
0x04010066
0x06040072
0x040200d7
0x0303006a
0x0205000e
0x0607008b
0x0500001c
0x0403000b
0x03040034
0x05020067
0x0305006c
0x040500e7
0x0005009e
0x06020073
0x01030039
0x07060069
0x050500d9>;
};
};
};
/* Sensors mounted on this board variant */
i2c@80128000 {
lsm303dlh@18 {
/* Accelerometer */
compatible = "st,lsm303dlh-accel";
st,drdy-int-pin = <1>;
drive-open-drain;
reg = <0x18>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
pinctrl-names = "default";
pinctrl-0 = <&accel_tvk_mode>;
interrupt-parent = <&gpio2>;
interrupts = <18 IRQ_TYPE_EDGE_FALLING>,
<19 IRQ_TYPE_EDGE_FALLING>;
};
lsm303dlh@1e {
/*
* This magnetometer is packaged with
* the accelerometer, and has a DRDY line,
* however it is not connected on this
* board so it can not generate interrupts.
*/
compatible = "st,lsm303dlh-magn";
reg = <0x1e>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
};
lis331dl@1c {
/* Accelerometer */
compatible = "st,lis331dl-accel";
st,drdy-int-pin = <1>;
drive-open-drain;
reg = <0x1c>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
pinctrl-names = "default";
pinctrl-0 = <&accel_tvk_mode>;
interrupt-parent = <&gpio2>;
interrupts = <18 IRQ_TYPE_EDGE_FALLING>,
<19 IRQ_TYPE_EDGE_FALLING>;
};
ak8974@0f {
/* Magnetometer */
compatible = "asahi-kasei,ak8974";
reg = <0x0f>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
pinctrl-names = "default";
pinctrl-0 = <&gyro_magn_tvk_mode>;
interrupt-parent = <&gpio1>;
interrupts = <0 IRQ_TYPE_EDGE_RISING>;
};
l3g4200d@68 {
/* Gyroscope */
compatible = "st,l3g4200d-gyro";
st,drdy-int-pin = <2>;
reg = <0x68>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
pinctrl-names = "default";
pinctrl-0 = <&gyro_magn_tvk_mode>;
interrupt-parent = <&gpio1>;
interrupts = <0 IRQ_TYPE_EDGE_RISING>;
};
lsp001wm@5c {
/* Barometer/pressure sensor */
compatible = "st,lps001wp-press";
reg = <0x5c>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
};
};
i2c@80110000 {
synaptics@4b {
/* Synaptics RMI4 TM1217 touchscreen */
compatible = "syna,rmi4-i2c";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x4b>;
vdd-supply = <&ab8500_ldo_aux1_reg>;
vddio-supply = <&db8500_vsmps2_reg>;
pinctrl-names = "default";
pinctrl-0 = <&synaptics_tvk_mode>;
interrupt-parent = <&gpio2>;
interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
rmi-f01@1 {
reg = <0x1>;
syna,nosleep = <1>;
};
rmi-f11@11 {
reg = <0x11>;
touchscreen-inverted-x;
syna,sensor-type = <1>;
};
};
};
pinctrl {
/* Pull up this GPIO pin */
tc35893 {
tc35893_tvk_mode: tc35893_tvk {
tvk_cfg {
pins = "GPIO218_AH11";
ste,config = <&gpio_in_pu>;
};
};
};
prox {
prox_tvk_mode: prox_tvk {
tvk_cfg {
pins = "GPIO217_AH12";
ste,config = <&gpio_in_pu>;
};
};
};
hall {
hall_tvk_mode: hall_tvk {
tvk_cfg {
pins = "GPIO145_C13";
ste,config = <&gpio_in_pu>;
};
};
};
accelerometer {
accel_tvk_mode: accel_tvk {
/* Accelerometer interrupt lines 1 & 2 */
tvk_cfg {
pins = "GPIO82_C1", "GPIO83_D3";
ste,config = <&gpio_in_pu>;
};
};
};
gyroscope {
/*
* These lines are shared between Gyroscope l3g400dh
* and AK8974 magnetometer.
*/
gyro_magn_tvk_mode: gyro_magn_tvk {
/* GPIO 31 used for INT pull down the line */
tvk_cfg1 {
pins = "GPIO31_V3";
ste,config = <&gpio_in_pd>;
};
/* GPIO 32 used for DRDY, pull this down */
tvk_cfg2 {
pins = "GPIO32_V2";
ste,config = <&gpio_in_pd>;
};
};
};
synaptics {
synaptics_tvk_mode: synaptics_tvk {
/* Touchscreen uses GPIO 84 */
tvk_cfg1 {
pins = "GPIO84_C2";
ste,config = <&gpio_in_pu>;
};
};
};
};
};
};