Hi Alistair,
thanks for your patch, please see below.
On 22-12-20, Alistair Francis wrote:
> Add support for the cyttsp5 touchscreen controller for the reMarkable 2.
>
> Signed-off-by: Alistair Francis <alistair@xxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/imx7d-remarkable2.dts | 98 +++++++++++++++++++++++++
> 1 file changed, 98 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx7d-remarkable2.dts b/arch/arm/boot/dts/imx7d-remarkable2.dts
> index 8b2f11e85e05..a138b292ec6a 100644
> --- a/arch/arm/boot/dts/imx7d-remarkable2.dts
> +++ b/arch/arm/boot/dts/imx7d-remarkable2.dts
> @@ -8,6 +8,7 @@
> /dts-v1/;
>
> #include "imx7d.dtsi"
> +#include <dt-bindings/input/linux-event-codes.h>
>
> / {
> model = "reMarkable 2.0";
> @@ -69,6 +70,18 @@ reg_digitizer: regulator-digitizer {
> startup-delay-us = <100000>; /* 100 ms */
> };
>
> + reg_touch: regulator-touch {
> + compatible = "regulator-fixed";
> + regulator-name = "VDD_3V3_TOUCH";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + pinctrl-names = "default", "sleep";
> + pinctrl-0 = <&pinctrl_touch_reg>;
> + pinctrl-1 = <&pinctrl_touch_reg>;
Why do we need a "sleep" state here?
> + gpio = <&gpio1 11 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> + };
> +
> wifi_pwrseq: wifi_pwrseq {
> compatible = "mmc-pwrseq-simple";
> pinctrl-names = "default";
> @@ -106,6 +119,68 @@ wacom_digitizer: digitizer@9 {
> };
> };
>
> +&i2c3 {
> + clock-frequency = <100000>;
This can be set to 400kHz, the driver handle the quirks internal.
Regards,
Marco
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2c3>;
> + status = "okay";
> +
> + touchscreen@24 {
> + compatible = "cypress,tt21000";
> + reg = <0x24>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_touch>;
> + interrupt-parent = <&gpio1>;
> + interrupts = <14 IRQ_TYPE_EDGE_FALLING>;
> + reset-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
> + vdd-supply = <®_touch>;
> + touchscreen-size-x = <880>;
> + touchscreen-size-y = <1280>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + button@0 {
> + reg = <0>;
> + linux,keycodes = <KEY_HOMEPAGE>;
> + };
> +
> + button@1 {
> + reg = <1>;
> + linux,keycodes = <KEY_MENU>;
> + };
> +
> + button@2 {
> + reg = <2>;
> + linux,keycodes = <KEY_BACK>;
> + };
> +
> + button@3 {
> + reg = <3>;
> + linux,keycodes = <KEY_SEARCH>;
> + };
> +
> + button@4 {
> + reg = <4>;
> + linux,keycodes = <KEY_VOLUMEDOWN>;
> + };
> +
> + button@5 {
> + reg = <5>;
> + linux,keycodes = <KEY_VOLUMEUP>;
> + };
> +
> + button@6 {
> + reg = <6>;
> + linux,keycodes = <KEY_CAMERA>;
> + };
> +
> + button@7 {
> + reg = <7>;
> + linux,keycodes = <KEY_POWER>;
> + };
> + };
> +};
> +
> &i2c4 {
> clock-frequency = <100000>;
> pinctrl-names = "default", "sleep";
> @@ -232,6 +307,15 @@ MX7D_PAD_ENET1_RGMII_TXC__GPIO7_IO11 0x00000014
> >;
> };
>
> + pinctrl_touch: touchgrp {
> + fsl,pins = <
> + /* CYTTSP interrupt */
> + MX7D_PAD_GPIO1_IO14__GPIO1_IO14 0x54
> + /* CYTTSP reset */
> + MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x04
> + >;
> + };
> +
> pinctrl_i2c1: i2c1grp {
> fsl,pins = <
> MX7D_PAD_I2C1_SDA__I2C1_SDA 0x4000007f
> @@ -239,6 +323,13 @@ MX7D_PAD_I2C1_SCL__I2C1_SCL 0x4000007f
> >;
> };
>
> + pinctrl_i2c3: i2c3grp {
> + fsl,pins = <
> + MX7D_PAD_I2C3_SDA__I2C3_SDA 0x4000007f
> + MX7D_PAD_I2C3_SCL__I2C3_SCL 0x4000007f
> + >;
> + };
> +
> pinctrl_i2c4: i2c4grp {
> fsl,pins = <
> MX7D_PAD_I2C4_SDA__I2C4_SDA 0x4000007f
> @@ -246,6 +337,13 @@ MX7D_PAD_I2C4_SCL__I2C4_SCL 0x4000007f
> >;
> };
>
> + pinctrl_touch_reg: touchreggrp {
> + fsl,pins = <
> + /* TOUCH_PWR_EN */
> + MX7D_PAD_GPIO1_IO11__GPIO1_IO11 0x14
> + >;
> + };
> +
> pinctrl_uart1: uart1grp {
> fsl,pins = <
> MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX 0x79
> --
> 2.38.1
>
>
>
