[RFC,v2,2/6] arm64: dts: qcom: sdm845-tama: Add Synaptics Touchscreen
Commit Message
From: Konrad Dybcio <konrad.dybcio@somainline.org>
Add required pins and RMI4 node to the common DT and remove it
from Akatsuki, as it uses a different touch.
Since the panels are super high tech proprietary incell, they
need to be handled with very precise timings. As such the panel
driver sets up the power rails and GPIOs and the touchscreen
driver *has to* probe afterwards.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
.../dts/qcom/sdm845-sony-xperia-tama-akatsuki.dts | 3 +
.../boot/dts/qcom/sdm845-sony-xperia-tama.dtsi | 69 +++++++++++++++++++++-
2 files changed, 70 insertions(+), 2 deletions(-)
Comments
On 13.03.2023 17:32, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@somainline.org>
>
> Add required pins and RMI4 node to the common DT and remove it
> from Akatsuki, as it uses a different touch.
>
> Since the panels are super high tech proprietary incell, they
> need to be handled with very precise timings. As such the panel
> driver sets up the power rails and GPIOs and the touchscreen
> driver *has to* probe afterwards.
>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
> ---
[...]
> &i2c5 {
> - status = "okay";
> clock-frequency = <400000>;
> + status = "okay";
> +
> + touchscreen: touchscreen@2c {
> + compatible = "syna,rmi4-i2c";
> + reg = <0x2c>;
> +
> + interrupt-parent = <&tlmm>;
> + interrupts = <125 IRQ_TYPE_EDGE_FALLING>;
interrupts-extended
> + vdd-supply = <&vreg_l14a_1p8>;
> + /*
> + * This is a blatant abuse of OF, but the panel driver *needs*
> + * to probe first, as the power/gpio switching needs to be precisely
> + * timed in order for both the display and touch panel to function properly.
> + */
> + incell-supply = <&panel>;
> +
> + syna,reset-delay-ms = <220>;
> + syna,startup-delay-ms = <1000>;
> +
> + pinctrl-names = "default", "sleep";
> + pinctrl-0 = <&ts_default>;
> + pinctrl-1 = <&ts_sleep>;
swapped
>
> - /* Synaptics touchscreen @ 2c, 3c */
> + #address-cells = <1>;
> + #size-cells = <0>;
Konrad
@@ -7,6 +7,9 @@
#include "sdm845-sony-xperia-tama.dtsi"
+/* XZ3 uses an Atmel touchscreen instead. */
+/delete-node/ &touchscreen;
+
/ {
model = "Sony Xperia XZ3";
compatible = "sony,akatsuki-row", "qcom,sdm845";
@@ -405,10 +405,43 @@ &gcc {
};
&i2c5 {
- status = "okay";
clock-frequency = <400000>;
+ status = "okay";
+
+ touchscreen: touchscreen@2c {
+ compatible = "syna,rmi4-i2c";
+ reg = <0x2c>;
+
+ interrupt-parent = <&tlmm>;
+ interrupts = <125 IRQ_TYPE_EDGE_FALLING>;
+ vdd-supply = <&vreg_l14a_1p8>;
+ /*
+ * This is a blatant abuse of OF, but the panel driver *needs*
+ * to probe first, as the power/gpio switching needs to be precisely
+ * timed in order for both the display and touch panel to function properly.
+ */
+ incell-supply = <&panel>;
+
+ syna,reset-delay-ms = <220>;
+ syna,startup-delay-ms = <1000>;
+
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&ts_default>;
+ pinctrl-1 = <&ts_sleep>;
- /* Synaptics touchscreen @ 2c, 3c */
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rmi4-f01@1 {
+ reg = <0x01>;
+ syna,nosleep-mode = <1>;
+ };
+
+ rmi4-f12@12 {
+ reg = <0x12>;
+ syna,sensor-type = <1>;
+ };
+ };
};
&i2c10 {
@@ -561,6 +594,38 @@ sde_te_active_sleep: sde-te-active-sleep-state {
drive-strength = <2>;
bias-pull-down;
};
+
+ ts_default: ts-default-state {
+ reset-pins {
+ pins = "gpio99";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+
+ int-pins {
+ pins = "gpio125";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-up;
+ };
+ };
+
+ ts_sleep: ts-sleep-state {
+ reset-pins {
+ pins = "gpio99";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-down;
+ };
+
+ int-pins {
+ pins = "gpio125";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-down;
+ };
+ };
};
&uart6 {