ARM: dts: imx51-zii-rdu1: fix touchscreen pinctrl

The pinctrl settings were incorrect for the touchscreen interrupt line, causing
an interrupt storm. This change has been tested with both the atmel_mxt_ts and
RMI4 drivers on the RDU1 units.

The value 0x4 comes from the value of register IOMUXC_SW_PAD_CTL_PAD_CSI1_D8
from the old vendor kernel.

Signed-off-by: Nick Dyer <nick@shmanahar.org>
Fixes: ceef0396f367 ("ARM: dts: imx: add ZII RDU1 board")
Cc: <stable@vger.kernel.org> # 4.15+
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx51-zii-rdu1.dts b/arch/arm/boot/dts/imx51-zii-rdu1.dts
index df9eca9..8a87868 100644 (file)
--- a/arch/arm/boot/dts/imx51-zii-rdu1.dts
+++ b/arch/arm/boot/dts/imx51-zii-rdu1.dts
@@ -770,7 +770,7 @@
 
        pinctrl_ts: tsgrp {
                fsl,pins = <
-                       MX51_PAD_CSI1_D8__GPIO3_12              0x85
+                       MX51_PAD_CSI1_D8__GPIO3_12              0x04
                        MX51_PAD_CSI1_D9__GPIO3_13              0x85
                >;
        };