Based on kernel version 6.8
. Page generated on 2024-03-11 21:26 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | * Rohm BU21029 Touch Screen Controller Required properties: - compatible : must be "rohm,bu21029" - reg : i2c device address of the chip (0x40 or 0x41) - interrupt-parent : the phandle for the gpio controller - interrupts : (gpio) interrupt to which the chip is connected - rohm,x-plate-ohms : x-plate resistance in Ohm Optional properties: - reset-gpios : gpio pin to reset the chip (active low) - touchscreen-size-x : horizontal resolution of touchscreen (in pixels) - touchscreen-size-y : vertical resolution of touchscreen (in pixels) - touchscreen-max-pressure: maximum pressure value - vdd-supply : power supply for the controller Example: &i2c1 { /* ... */ bu21029: bu21029@40 { compatible = "rohm,bu21029"; reg = <0x40>; interrupt-parent = <&gpio1>; interrupts = <4 IRQ_TYPE_EDGE_FALLING>; reset-gpios = <&gpio6 16 GPIO_ACTIVE_LOW>; rohm,x-plate-ohms = <600>; touchscreen-size-x = <800>; touchscreen-size-y = <480>; touchscreen-max-pressure = <4095>; }; /* ... */ }; |