arm64: dts: qcom: sc7180: Link trogdor touchscreens to the panels

Let's provide the proper link from the touchscreen to the panel on
trogdor devices where the touchscreen support it. This allows the OS
to power sequence the touchscreen more properly.

For the most part, this is just expected to marginally improve power
consumption while the screen is off. However, in at least one trogdor
model (wormdingler) it's suspected that this will fix some behavorial
corner cases when the panel power cycles (like for a modeset) without
the touchscreen power cycling.

NOTE: some trogdor variants use touchscreens that don't (yet) support
linking the touchscreen and the panel. Those variants are left alone.

Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Benjamin Tissoires <bentiss@kernel.org>
Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Link: https://lore.kernel.org/r/20230727101636.v4.11.Ia06c340e3482563e6bfd3106ecd0d3139f173ca4@changeid
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
index a532cc4aac4740eaf810406a70045eea93e55776..722f246b8b77c37ca4d5b141aae60265570bc3c7 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi
@@ -104,6 +104,7 @@ ap_ts_pen_1v8: &i2c4 {
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+               panel = <&panel>;
                reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
 
                vdd-supply = <&pp3300_ts>;

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
index b27dcd2ec856f009b2078b3c372748fe6d0da8a5..062dbe7826674372d1cb8d8121c8f6588c5d2f2c 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-homestar.dtsi
@@ -116,6 +116,7 @@ ap_ts_pen_1v8: &i2c4 {
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+               panel = <&panel>;
                reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
 
                vdd-supply = <&pp3300_touch>;

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
index 13339b723a9371a2307dbdb5723543c52d606730..e9f213d2771184d04244837b007009eaaf62a861 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-lazor.dtsi
@@ -43,6 +43,7 @@ ap_ts_pen_1v8: &i2c4 {
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+               panel = <&panel>;
                post-power-on-delay-ms = <20>;
                hid-descr-addr = <0x0001>;
 

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
index fd944842dd6cdf53fe6d31350cdeeedbedcd7ba2..d325bb52ae5f75697c665a31a280db9c84be7dad 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi
@@ -102,6 +102,7 @@ ap_ts_pen_1v8: &i2c4 {
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+               panel = <&panel>;
                post-power-on-delay-ms = <20>;
                hid-descr-addr = <0x0001>;
 

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
index 62ab6427dd65d6523d2a33d34798f0e67da7cda7..e5d6a7898f8c93a472985c8e6942546cc171f6d1 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-quackingstick.dtsi
@@ -69,6 +69,7 @@
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
 
+               panel = <&panel>;
                post-power-on-delay-ms = <20>;
                hid-descr-addr = <0x0001>;
 

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
index 2f6a340ddd2ae34d26592c23e8a8610bec30fde4..305ad127246e6a58be81b4eb57cf6027708f7929 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi
@@ -123,6 +123,7 @@
                interrupt-parent = <&tlmm>;
                interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
 
+               panel = <&panel>;
                post-power-on-delay-ms = <70>;
                hid-descr-addr = <0x0001>;