dtsi: add pinctrl

Fixes msm8916-mainline#29

dtsi.py

@@ -35,6 +35,10 @@ def generate_panel_dtsi(p: Panel, options: Options) -> None:
 ''')
  f.write(f'''\
 &mdss_dsi0 {{
+ pinctrl-0 = <&mdss_default>;
+ pinctrl-1 = <&mdss_sleep>;
+ pinctrl-names = "default", "sleep";
+
  panel@0 {{
  compatible = "{options.compatible}";
  reg = <0>;
@@ -68,4 +72,22 @@ def generate_panel_dtsi(p: Panel, options: Options) -> None:
 &mdss_dsi0_phy {
  phy-type = <PHY_TYPE_CPHY>;
 };
+''')
+
+ f.write('''
+&tlmm {
+ mdss_default: mdss-default-state {
+ pins = "gpioXY";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ };
+
+ mdss_sleep: mdss-sleep-state {
+ pins = "gpioXY";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-down;
+ };
+};
 ''')