Enable the ST-Microelectronics FTS2BA61Y touchscreen. This patch
depends on "Input: add support for the STM FTS2BA61Y touchscreen".
The device has an issue where SPI 8 (the bus which the touchscreen is
connected to) is not working properly right now, so
spi-gpio is used instead.
Signed-off-by: Eric Gonçalves <ghatto404@gmail.com>
---
.../boot/dts/qcom/sm8450-samsung-r0q.dts | 167 ++++++++++++++++++
1 file changed, 167 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
index 70e953824996..7bf56564dfc6 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-samsung-r0q.dts
@@ -55,6 +55,45 @@ splash-region@b8000000 {
};
};
+ spi_gpio: spi-gpio@0 {
+ compatible = "spi-gpio";
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&spi_clk_tsp_active &spi_mosi_tsp_active &spi_miso_tsp_active>;
+ pinctrl-1 = <&spi_clk_tsp_sleep &spi_mosi_tsp_sleep &spi_miso_tsp_sleep>;
+
+ status = "okay";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sck-gpios = <&tlmm 30 GPIO_ACTIVE_HIGH>;
+ mosi-gpios = <&tlmm 29 GPIO_ACTIVE_HIGH>;
+ miso-gpios = <&tlmm 28 GPIO_ACTIVE_HIGH>;
+ cs-gpios = <&tlmm 31 GPIO_ACTIVE_LOW>;
+
+ num-chipselects = <1>;
+
+ spi-max-frequency = <5000000>;
+
+ touchscreen@0 {
+ compatible = "st,fts2ba61y";
+ reg = <0>;
+ spi-max-frequency = <5000000>;
+
+ vdd-supply = <&vreg_l8c_1p8>;
+ avdd-supply = <&vreg_l11c_3p0>;
+
+ interrupt-parent = <&tlmm>;
+ interrupts = <46 IRQ_TYPE_LEVEL_LOW>;
+
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&tsp_int_active>;
+ pinctrl-1 = <&tsp_int_sleep>;
+
+ status = "okay";
+ };
+ };
+
vph_pwr: regulator-vph-pwr {
compatible = "regulator-fixed";
regulator-name = "vph_pwr";
@@ -132,6 +171,18 @@ vreg_l1c_1p8: ldo1 {
regulator-max-microvolt = <1800000>;
regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
};
+
+ vreg_l8c_1p8: ldo8 {
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
+
+ vreg_l11c_3p0: ldo11 {
+ regulator-min-microvolt = <3000000>;
+ regulator-max-microvolt = <3000000>;
+ regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
+ };
};
};
@@ -156,6 +207,122 @@ &pon_resin {
&tlmm {
gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
+
+ spi_clk_tsp_active: spi_clk_tsp_active {
+ mux {
+ pins = "gpio30";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio30";
+ drive-strength = <6>;
+ bias-disable;
+ };
+ };
+
+ spi_clk_tsp_sleep: spi_clk_tsp_sleep {
+ mux {
+ pins = "gpio30";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio30";
+ drive-strength = <6>;
+ input-enable;
+ bias-pull-down;
+ };
+ };
+
+ spi_cs_tsp_active: spi_cs_tsp_active {
+ mux {
+ pins = "gpio31";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio31";
+ drive-strength = <6>;
+ bias-disable;
+ };
+ };
+
+ spi_cs_tsp_sleep: spi_cs_tsp_sleep {
+ mux {
+ pins = "gpio31";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio31";
+ drive-strength = <6>;
+ input-enable;
+ bias-pull-down;
+ };
+ };
+
+ spi_miso_tsp_active: spi_miso_tsp_active {
+ mux {
+ pins = "gpio28";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio28";
+ drive-strength = <6>;
+ bias-disable;
+ };
+ };
+
+ spi_miso_tsp_sleep: spi_miso_tsp_sleep {
+ mux {
+ pins = "gpio28";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio28";
+ drive-strength = <6>;
+ input-enable;
+ bias-pull-down;
+ };
+ };
+
+ spi_mosi_tsp_active: spi_mosi_tsp_active {
+ mux {
+ pins = "gpio29";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio29";
+ drive-strength = <6>;
+ bias-disable;
+ };
+ };
+
+ spi_mosi_tsp_sleep: spi_mosi_tsp_sleep {
+ mux {
+ pins = "gpio29";
+ function = "gpio";
+ };
+ config {
+ pins = "gpio29";
+ drive-strength = <6>;
+ input-enable;
+ bias-pull-down;
+ };
+ };
+
+ tsp_int_active: tsp_int_active {
+ pins = "gpio46";
+ function = "gpio";
+ drive-strength = <2>;
+ input-enable;
+ bias-disable;
+ };
+
+ tsp_int_sleep: tsp_int_sleep_state {
+ pins = "gpio46";
+ function = "gpio";
+ drive-strength = <2>;
+ input-enable;
+ bias-disable;
+ };
};
&usb_1 {
--
2.51.0
On 9/20/25 3:46 AM, Eric Gonçalves wrote:
> Enable the ST-Microelectronics FTS2BA61Y touchscreen. This patch
> depends on "Input: add support for the STM FTS2BA61Y touchscreen".
>
> The device has an issue where SPI 8 (the bus which the touchscreen is
> connected to) is not working properly right now, so
> spi-gpio is used instead.
>
> Signed-off-by: Eric Gonçalves <ghatto404@gmail.com>
> ---
[...]
> &tlmm {
> gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
> +
> + spi_clk_tsp_active: spi_clk_tsp_active {
> + mux {
> + pins = "gpio30";
> + function = "gpio";
> + };
> + config {
> + pins = "gpio30";
> + drive-strength = <6>;
> + bias-disable;
> + };
> + };
Drop mux/config, put all the properties right under the pin definition
> +
> + spi_clk_tsp_sleep: spi_clk_tsp_sleep {
Underscores are forbidden in node names, use dashes instead
Konrad
On September 25, 2025 10:08:37 AM GMT-03:00, Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> wrote:
>On 9/20/25 3:46 AM, Eric Gonçalves wrote:
>> Enable the ST-Microelectronics FTS2BA61Y touchscreen. This patch
>> depends on "Input: add support for the STM FTS2BA61Y touchscreen".
>>
>> The device has an issue where SPI 8 (the bus which the touchscreen is
>> connected to) is not working properly right now, so
>> spi-gpio is used instead.
>>
>> Signed-off-by: Eric Gonçalves <ghatto404@gmail.com>
>> ---
>
>[...]
>
>> &tlmm {
>> gpio-reserved-ranges = <36 4>; /* SPI (Unused) */
>> +
>> + spi_clk_tsp_active: spi_clk_tsp_active {
>> + mux {
>> + pins = "gpio30";
>> + function = "gpio";
>> + };
>> + config {
>> + pins = "gpio30";
>> + drive-strength = <6>;
>> + bias-disable;
>> + };
>> + };
>
>Drop mux/config, put all the properties right under the pin definition
>
>> +
>> + spi_clk_tsp_sleep: spi_clk_tsp_sleep {
>
>Underscores are forbidden in node names, use dashes instead
>
>Konrad
Will do, thanks
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