Specify the dimensions of the touchscreen propertly so that
no userspace configuration is needed for it.
Tested with x11 and weston on Debian bookworm.

What is in now is some debris from earlier tries to handle
scaling in kernel:

https://lore.kernel.org/linux-input/cover.1482936802.git.hns@goldelico.com/

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
---
 arch/arm/boot/dts/ti/omap/omap3-gta04.dtsi | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/ti/omap/omap3-gta04.dtsi b/arch/arm/boot/dts/ti/omap/omap3-gta04.dtsi
index 3661340009e7a..6e25db29a4bb9 100644
--- a/arch/arm/boot/dts/ti/omap/omap3-gta04.dtsi
+++ b/arch/arm/boot/dts/ti/omap/omap3-gta04.dtsi
@@ -591,8 +591,10 @@ tsc2007@48 {
 		interrupts = <0 IRQ_TYPE_EDGE_FALLING>; /* GPIO_160 */
 		gpios = <&gpio6 0 GPIO_ACTIVE_LOW>;	/* GPIO_160 */
 		ti,x-plate-ohms = <600>;
-		touchscreen-size-x = <480>;
-		touchscreen-size-y = <640>;
+		touchscreen-size-x = <0xf00>;
+		touchscreen-size-y = <0xf00>;
+		touchscreen-min-x = <0x100>;
+		touchscreen-min-y = <0x100>;
 		touchscreen-max-pressure = <1000>;
 		touchscreen-fuzz-x = <3>;
 		touchscreen-fuzz-y = <8>;
-- 
2.39.2