ARM: dts: overlays: waveshare-panel-v2: Add 6.25-DSI-TOUCH-A overlay

Add device tree overlay entries for the Waveshare 6.25-DSI-TOUCH-A
display in both 2-lane and 4-lane configurations.

The 6.25-DSI-TOUCH-A uses the Sitronix ST7123 touchscreen
controller at I2C address 0x55, replacing the default Goodix
touch configuration.

Rename the touch node from "goodix@5d" to "touch@5d" to reflect
that different panels may use different touch controllers.

Enable CONFIG_TOUCHSCREEN_ST7123=m in bcm2712_defconfig.

Signed-off-by: Waveshare_Team <support@waveshare.com>

Author: Waveshare_Team

arch/arm/boot/dts/overlays/README

@@ -5964,6 +5964,8 @@ Params: 3_4_inch_c              3.4" 800x800 2lane
         4_0_inch_c              4.0" 720x720 2lane
         5_0_inch_a              5.0" 720x1280 2lane
         5_5_inch_a              5.5" 720x1280 2lane
+        6_25_inch_a             6.25" 720x1560 2lane
+        6_25_inch_a_4lane       6.25" 720x1560 4lane
         7_0_inch_a              7.0" A 720x1280 2lane
         7_0_inch_b              7.0" B 720x1280 2lane
         7_0_inch_c              7.0" C 1024x600 2lane

arch/arm/boot/dts/overlays/vc4-kms-dsi-waveshare-panel-v2-overlay.dts

@@ -82,6 +82,12 @@
 		4_0_inch_c = <&dsi_panel>, "compatible=waveshare,4.0-dsi-touch-c";
 		5_0_inch_a = <&dsi_panel>, "compatible=waveshare,5.0-dsi-touch-a";
 		5_5_inch_a = <&dsi_panel>, "compatible=waveshare,5.5-dsi-touch-a";
+		6_25_inch_a = <&dsi_panel>, "compatible=waveshare,6.25-dsi-touch-a",
+			      <&touch>, "compatible=sitronix_ts,st7123",
+			      <&touch>, "reg:0=0x55";
+		6_25_inch_a_4lane = <&dsi_panel>, "compatible=waveshare,6.25-dsi-touch-a,4lane",
+				    <&touch>, "compatible=sitronix_ts,st7123",
+				    <&touch>, "reg:0=0x55";
 		7_0_inch_a = <&dsi_panel>, "compatible=waveshare,7.0-dsi-touch-a";
 		7_0_inch_b = <&dsi_panel>, "compatible=waveshare,7.0-dsi-touch-b";
 		7_0_inch_c = <&dsi_panel>, "compatible=waveshare,7.0-dsi-touch-c";

arch/arm64/configs/bcm2711_defconfig

@@ -707,6 +707,7 @@ CONFIG_TOUCHSCREEN_RASPBERRYPI_FW=m
 CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
 CONFIG_TOUCHSCREEN_TSC2007=m
 CONFIG_TOUCHSCREEN_TSC2007_IIO=y
+CONFIG_TOUCHSCREEN_ST7123=m
 CONFIG_TOUCHSCREEN_STMPE=m
 CONFIG_TOUCHSCREEN_IQS5XX=m
 CONFIG_INPUT_MISC=y

arch/arm64/configs/bcm2711_rt_defconfig

@@ -706,6 +706,7 @@ CONFIG_TOUCHSCREEN_RASPBERRYPI_FW=m
 CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
 CONFIG_TOUCHSCREEN_TSC2007=m
 CONFIG_TOUCHSCREEN_TSC2007_IIO=y
+CONFIG_TOUCHSCREEN_ST7123=m
 CONFIG_TOUCHSCREEN_STMPE=m
 CONFIG_TOUCHSCREEN_IQS5XX=m
 CONFIG_INPUT_MISC=y

arch/arm64/configs/bcm2712_defconfig

@@ -710,6 +710,7 @@ CONFIG_TOUCHSCREEN_RASPBERRYPI_FW=m
 CONFIG_TOUCHSCREEN_USB_COMPOSITE=m
 CONFIG_TOUCHSCREEN_TSC2007=m
 CONFIG_TOUCHSCREEN_TSC2007_IIO=y
+CONFIG_TOUCHSCREEN_ST7123=m
 CONFIG_TOUCHSCREEN_STMPE=m
 CONFIG_TOUCHSCREEN_IQS5XX=m
 CONFIG_INPUT_MISC=y