diff options
| author | Yannick Fertre <yannick.fertre@foss.st.com> | 2024-05-06 16:49:45 +0200 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2024-06-05 10:35:00 +0200 |
| commit | 3d058df954ebdb592fd421e0005f6d0c25da21ed (patch) | |
| tree | b6c0b0823c41ba0166e982d5145247e8b908a624 /arch | |
| parent | 26c7b370eba6127431c82d1cbf5081f6b5674db6 (diff) | |
ARM: dts: stm32: add goodix touchscreen on stm32mp135f-dk
Touchscreen reset needs to be configured
via the pinctrl not the driver (a pull-down resistor
has been soldered onto the reset line which forces
the touchscreen to reset state).
Interrupt line must have a pull-down resistor
in order to freeze the i2c address at 0x5D.
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi | 22 | ||||
| -rw-r--r-- | arch/arm/boot/dts/st/stm32mp135f-dk.dts | 14 |
2 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi index b423d182aefd..66efef93251f 100644 --- a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi +++ b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi @@ -46,6 +46,28 @@ }; }; + goodix_pins_a: goodix-0 { + /* + * touchscreen reset needs to be configured + * via the pinctrl not the driver (a pull-down resistor + * has been soldered onto the reset line which forces + * the touchscreen to reset state). + */ + pins1 { + pinmux = <STM32_PINMUX('H', 2, GPIO)>; + output-high; + bias-pull-up; + }; + /* + * Interrupt line must have a pull-down resistor + * in order to freeze the i2c address at 0x5D + */ + pins2 { + pinmux = <STM32_PINMUX('F', 5, GPIO)>; + bias-pull-down; + }; + }; + i2c1_pins_a: i2c1-0 { pins { pinmux = <STM32_PINMUX('D', 12, AF5)>, /* I2C1_SCL */ diff --git a/arch/arm/boot/dts/st/stm32mp135f-dk.dts b/arch/arm/boot/dts/st/stm32mp135f-dk.dts index e43bb9b74b87..970de441fbaa 100644 --- a/arch/arm/boot/dts/st/stm32mp135f-dk.dts +++ b/arch/arm/boot/dts/st/stm32mp135f-dk.dts @@ -288,6 +288,20 @@ }; }; }; + + goodix: goodix-ts@5d { + compatible = "goodix,gt911"; + reg = <0x5d>; + pinctrl-names = "default"; + pinctrl-0 = <&goodix_pins_a>; + interrupt-parent = <&gpiof>; + interrupts = <5 IRQ_TYPE_EDGE_FALLING>; + AVDD28-supply = <&scmi_v3v3_sw>; + VDDIO-supply = <&scmi_v3v3_sw>; + touchscreen-size-x = <480>; + touchscreen-size-y = <272>; + status = "okay" ; + }; }; &iwdg2 { |