From: Alistair Francis <alistair@alistair23.me>
To: s.hauer@pengutronix.de, shawnguo@kernel.org,
dmitry.torokhov@gmail.com, benjamin.tissoires@redhat.com
Cc: jikos@kernel.org, linux-kernel@vger.kernel.org,
alistair23@gmail.com, linux-arm-kernel@lists.infradead.org,
linux-input@vger.kernel.org, Jason.Gerecke@wacom.com,
linux-imx@nxp.com, Ping.Cheng@wacom.com,
devicetree@vger.kernel.org, martin.chen@wacom.com,
tatsunosuke.tobita@wacom.com,
Alistair Francis <alistair@alistair23.me>
Subject: [PATCH v16 3/3] ARM: dts: imx7d: remarkable2: add wacom digitizer device
Date: Wed, 8 Dec 2021 22:40:45 +1000 [thread overview]
Message-ID: <20211208124045.61815-4-alistair@alistair23.me> (raw)
In-Reply-To: <20211208124045.61815-1-alistair@alistair23.me>
Add Wacom I2C support for the reMarkable 2 eInk tablet using the
generic I2C HID framework.
Signed-off-by: Alistair Francis <alistair@alistair23.me>
---
| 59 +++++++++++++++++++++++++
1 file changed, 59 insertions(+)
--git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts
index 89cbf13097a4..a2a91bfdd98e 100644
--- a/arch/arm/boot/dts/imx7d-remarkable2.dts
+++ b/arch/arm/boot/dts/imx7d-remarkable2.dts
@@ -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 +64,26 @@ &clks {
assigned-clock-rates = <0>, <32768>;
};
+&i2c1 {
+ clock-frequency = <400000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+
+ wacom_digitizer: digitizer@9 {
+ compatible = "hid-over-i2c";
+ reg = <0x09>;
+ hid-descr-addr = <0x01>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_wacom>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+ touchscreen-inverted-x;
+ touchscreen-inverted-y;
+ vdd-supply = <®_digitizer>;
+ };
+};
+
&snvs_pwrkey {
status = "okay";
};
@@ -117,6 +150,25 @@ &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 +177,13 @@ 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
--
2.31.1
next prev parent reply other threads:[~2021-12-08 12:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-08 12:40 [PATCH v16 0/3] Add Wacom I2C support to rM2 Alistair Francis
2021-12-08 12:40 ` [PATCH v16 1/3] HID: quirks: Allow inverting the absolute X/Y values Alistair Francis
2021-12-08 12:40 ` [PATCH v16 2/3] HID: i2c-hid-of: Expose the touchscreen-inverted properties Alistair Francis
2021-12-08 12:40 ` Alistair Francis [this message]
2021-12-16 3:08 ` [PATCH v16 3/3] ARM: dts: imx7d: remarkable2: add wacom digitizer device Shawn Guo
2021-12-14 12:33 ` [PATCH v16 0/3] Add Wacom I2C support to rM2 Benjamin Tissoires
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