In one of the iWave-G22D development board variants, called Generic SODIMM Development Platform, we have an LCD with touchscreen. The resistive touch controller, STMPE811 is on the development board and is connected through the i2c5 of the RZ-G1E. Additionally, this controller should generate an interrupt to the CPU and it is connected through GPIO4,4 to the GIC. Touch was tested with one of our iW-RainboW-G22D-SODIMM RZ/G1E development platforms. More details on the iWave website: https://www.iwavesystems.com/rz-g1e-sodimm-development-kit.html Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@xxxxxxxxxxxxxx> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> --- arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts | 46 +++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts index ce6603b..1051d82 100644 --- a/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts +++ b/arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts @@ -128,6 +128,47 @@ status = "okay"; clock-frequency = <400000>; + stmpe811@44 { + compatible = "st,stmpe811"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0x44>; + interrupt-parent = <&gpio4>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>; + irq-gpio = <&gpio4 4 IRQ_TYPE_LEVEL_LOW>; + pinctrl-0 = <&touch>; + pinctrl-names = "default"; + id = <0>; + blocks = <0x5>; + irq-trigger = <0x1>; + + stmpe_touchscreen { + compatible = "st,stmpe-ts"; + reg = <0>; + /* 3.25 MHz ADC clock speed */ + st,adc-freq = <3>; + /* 8 sample average control */ + st,ave-ctrl = <2>; + /* 7 length fractional part in z */ + st,fraction-z = <7>; + /* + * 50 mA typical 80 mA max touchscreen drivers + * current limit value + */ + st,i-drive = <0>; + /* 12-bit ADC */ + st,mod-12b = <1>; + /* internal ADC reference */ + st,ref-sel = <0>; + /* ADC converstion time: 80 clocks */ + st,sample-time = <4>; + /* 1 ms panel driver settling time */ + st,settling = <3>; + /* 5 ms touch detect interrupt delay */ + st,touch-det-delay = <4>; + }; + }; + sgtl5000: codec@a { compatible = "fsl,sgtl5000"; #sound-dai-cells = <0>; @@ -181,6 +222,11 @@ function = "ssi"; }; + touch: stmpe811 { + groups = "intc_irq0"; + function = "intc"; + }; + usb0_pins: usb0 { groups = "usb0"; function = "usb0"; -- 2.7.4
