[PATCH v3 5/5] arm64: dts: exynos7870-j6lte: set mode 0 as default for zinitix touchscreen

[Kaustabh Chakraborty]

The ZT7548 chip in the Galaxy J6 is actually able to support mode 2 (the
recommended mode) just fine.

However, the downstream kernel driver utilizes mode 0. This creates a
problem in the aftermarket world where fake touch digitizers only
implement the bare minimum functionality, as used by the downstream
driver, to compromise on cost, which leads to such chips implementing
mode 0 only. To ensure touch works on those devices, set the default
mode to 0.

Reviewed-by: Linus Walleij <linusw at kernel.org>
Signed-off-by: Kaustabh Chakraborty <kauschluss at disroot.org>
---
 arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
index de30d0970336..bd8f798c9810 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
@@ -424,6 +424,8 @@ touchscreen at 20 {
 		touchscreen-size-y = <1480>;
 
 		vdd-supply = <&vdd_ldo34>;
+
+		zinitix,mode = <0>;
 	};
 };
 

-- 
2.54.0