| Synaptics DSXV26 touch controller |
| |
| Please add this description here: The Synaptics Touch controller is connected to the |
| host processor via I2C. The controller generates interrupts when the user touches |
| the panel. The host controller is expected to read the touch coordinates over I2C and |
| pass the coordinates to the rest of the system. |
| |
| Required properties: |
| |
| - compatible : should be "synaptics,dsx-i2c". |
| - reg : i2c slave address of the device. |
| - interrupt-parent : parent of interrupt. |
| - synaptics,irq-gpio : irq gpio. |
| - synaptics,reset-gpio : reset gpio. |
| - synaptics,power-gpio : power switch gpio. |
| - synaptics,irq-flags : irq flags. |
| |
| Optional property: |
| - vdd_ana-supply : digital voltage power supply needed to power device. |
| - vcc_i2c-supply : analog voltage power supply needed to power device. |
| - synaptics,pwr-reg-name : power reg name of digital voltage. |
| - synaptics,bus-reg-name : bus reg name of analog voltage. |
| - synaptics,irq-on-state : irq gpio active state. |
| - synaptics,reset-on-state : reset gpio active state. |
| - synaptics,power-on-state : power switch active state. |
| - synaptics,ub-i2c-addr : microbootloader mode I2C slave address. |
| - synaptics,cap-button-codes : virtual key code mappings to be used. |
| - synaptics,vir-button-codes : virtual key code and the response region on panel. |
| - synaptics,wakeup-gestures-en: enable wakeup gestures. |
| - synaptics,x-flip : modify orientation of the x axis. |
| - synaptics,y-flip : modify orientation of the y axis. |
| - synaptics,reset-delay-ms : reset delay for controller (ms), default 100. |
| - synaptics,reset-active-ms : reset active duration for controller (ms), default 100. |
| - synaptics,power-delay-ms : power delay for controller (ms), default 100. |
| - synaptics,max-y-for-2d : maximal y value of the panel. |
| - synaptics,swap-axes : specify whether to swap axes. |
| - synaptics,resume-in-workqueue : specify whether to defer the resume to workqueue. |
| - clock-names : Clock names used for secure touch. They are: "iface_clk", "core_clk" |
| - clocks : Defined if 'clock-names' DT property is defined. These clocks |
| are associated with the underlying I2C bus. |
| |
| Example: |
| i2c@78b7000 { |
| status = "ok"; |
| synaptics@4b { |
| compatible = "synaptics,dsx-i2c"; |
| reg = <0x4b>; |
| interrupt-parent = <&tlmm>; |
| interrupts = <65 0x2008>; |
| vdd_ana-supply = <&pm8953_l17>; |
| vcc_i2c-supply = <&pm8953_l6>; |
| synaptics,pwr-reg-name = "vdd_ana"; |
| synaptics,bus-reg-name = "vcc_i2c"; |
| synaptics,irq-gpio = <&tlmm 65 0x2008>; |
| synaptics,irq-on-state = <0>; |
| synaptics,irq-flags = <0x2008>; /* IRQF_ONESHOT | IRQF_TRIGGER_LOW */ |
| synaptics,power-delay-ms = <200>; |
| synaptics,reset-delay-ms = <200>; |
| synaptics,max-y-for-2d = <1919>; /* remove if no virtual buttons */ |
| synaptics,cap-button-codes = <139 172 158>; |
| synaptics,vir-button-codes = <139 180 2000 320 160 172 540 2000 320 160 158 900 2000 320 160>; |
| /* Underlying clocks used by secure touch */ |
| clock-names = "iface_clk", "core_clk"; |
| clocks = <&clock_gcc clk_gcc_blsp1_ahb_clk>, |
| <&clock_gcc clk_gcc_blsp1_qup3_i2c_apps_clk>; |
| }; |
| }; |