@@ -34,6 +34,19 @@ reg_brcm: regulator-brcm {
startup-delay-us = <150>;
};
+ reg_digitizer: regulator-digitizer {
+ compatible = "regulator-fixed";
+ regulator-name = "VDD_3V3_DIGITIZER";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&pinctrl_digitizer_reg>;
+ pinctrl-1 = <&pinctrl_digitizer_reg>;
+ gpio = <&gpio1 6 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ startup-delay-us = <100000>; /* 100 ms */
+ };
+
wifi_pwrseq: wifi_pwrseq {
compatible = "mmc-pwrseq-simple";
pinctrl-names = "default";
@@ -51,6 +64,28 @@ &clks {
assigned-clock-rates = <0>, <32768>;
};
+&i2c1 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+
+ wacom_digitizer: digitizer@9 {
+ compatible = "wacom,i2c-30";
+ reg = <0x09>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_wacom>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+ flip-tilt-x;
+ flip-tilt-y;
+ flip-pos-x;
+ flip-pos-y;
+ flip-distance;
+ vdd-supply = <®_digitizer>;
+ };
+};
+
&snvs_pwrkey {
status = "okay";
};
@@ -117,6 +152,25 @@ &wdog1 {
fsl,ext-reset-output;
};
+&iomuxc_lpsr {
+ pinctrl_digitizer_reg: digitizerreggrp {
+ fsl,pins = <
+ /* DIGITIZER_PWR_EN */
+ MX7D_PAD_LPSR_GPIO1_IO06__GPIO1_IO6 0x14
+ >;
+ };
+
+ pinctrl_wacom: wacomgrp {
+ fsl,pins = <
+ /*MX7D_PAD_LPSR_GPIO1_IO05__GPIO1_IO5 0x00000014 /* FWE */
+ MX7D_PAD_LPSR_GPIO1_IO04__GPIO1_IO4 0x00000074 /* PDCTB */
+ MX7D_PAD_LPSR_GPIO1_IO01__GPIO1_IO1 0x00000034 /* WACOM INT */
+ /*MX7D_PAD_LPSR_GPIO1_IO06__GPIO1_IO6 0x00000014 /* WACOM PWR ENABLE */
+ /*MX7D_PAD_LPSR_GPIO1_IO00__GPIO1_IO0 0x00000074 /* WACOM RESET */
+ >;
+ };
+};
+
&iomuxc {
pinctrl_brcm_reg: brcmreggrp {
fsl,pins = <
@@ -125,6 +179,13 @@ MX7D_PAD_SAI1_TX_BCLK__GPIO6_IO13 0x14
>;
};
+ pinctrl_i2c1: i2c1grp {
+ fsl,pins = <
+ MX7D_PAD_I2C1_SDA__I2C1_SDA 0x4000007f
+ MX7D_PAD_I2C1_SCL__I2C1_SCL 0x4000007f
+ >;
+ };
+
pinctrl_uart1: uart1grp {
fsl,pins = <
MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX 0x79
Enable the wacom_i2c touchscreen for the reMarkable2. Signed-off-by: Alistair Francis <alistair@alistair23.me> --- arch/arm/boot/dts/imx7d-remarkable2.dts | 61 +++++++++++++++++++++++++ 1 file changed, 61 insertions(+)