Thank you very much for your response Mr. Nelson.
I tried with your solution but it did not work for me.
Situation was the same.
But, more importantly, you made me thinking and finally I have a working
dts:
fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {
bb_i2c1_pins: pinmux_bb_i2c1_pins {
pinctrl-single,pins = <
BONE_P9_18 0x72 // spi0_d1.i2c1_sda, SLEWCTRL_SLOW |
INPUT_PULLUP | MODE2
BONE_P9_17 0x72 // spi0_cs0.i2c1_scl, SLEWCTRL_SLOW
| INPUT_PULLUP | MODE2
>;
};
};
};
fragment@1 {
target = <&am33xx_pinmux>;
__overlay__ {
gt911_ts: pinmux_gt911_ts {
pinctrl-single,pins = <
BONE_P8_13 (PIN_INPUT_PULLUP | MUX_MODE7)
BONE_P8_14 (PIN_OUTPUT_PULLUP | MUX_MODE7)
>;
};
};
};
fragment@2 {
target = <&i2c1>; // i2c1 is numbered correctly
__overlay__ {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&bb_i2c1_pins>;
// configuration start
clock-frequency = <100000>;
#address-cells = <1>;
#size-cells = <0>;
ctp@5d {
status = "okay";
pinctrl-names = "default";
compatible = "goodix,gt911";
reg = <0x5d>;
interrupt-parent = <>911_ts>;
interrupts = <1 0>;
irq-gpios = <>911_ts 0 GPIO_ACTIVE_LOW>;
reset-gpios = <>911_ts 1 GPIO_ACTIVE_LOW>;
touchscreen-swapped-x-y;
};
};
};
Once again, thank you for your help.
Regards,
--
Libor Orgovan.
уторак, 04. октобар 2016. 17.29.53 UTC+2, RobertCNelson је написао/ла:
>
> On Tue, Oct 4, 2016 at 7:01 AM, <[email protected] <javascript:>>
> wrote:
> > I am pretty sure that the problem is in the following block of code:
> > interrupts = <8 13 2>;
> > irq-gpios = <8 13>;
> > reset-gpios = <8 14>;
> >
> > I do not know how to define these gpios in that block of code, how to
> assign
> > them to interrupts, irg-gpios and reset-gpios.
> >
> > Gpio which is connected to GT911 controller's interrupt is P8_13 and
> gpio
> > for reset of the GT911 controller is P8_14.
>
> Well,
>
>
> https://github.com/derekmolloy/boneDeviceTree/blob/master/docs/BeagleboneBlackP8HeaderTable.pdf
>
>
> P8_13 = gpio0_23
> P8_24 = gpio0_26
>
>
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/input/touchscreen/goodix.txt
>
>
> interrupt-parent = <&gpio0>;
> interrupts = <0 0>; //interrupts : Interrupt to which the chip is
> connected
>
> irq-gpios = <&gpio0 23 GPIO_ACTIVE_LOW>;
> reset-gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
--
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