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ARM: dts: imx7d-sdb: config the max pressure for tsc2046

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[ Upstream commit e7c4ebe2f9cd68588eb24ba4ed122e696e2d5272 ]

Use the general touchscreen method to config the max pressure for
touch tsc2046(data sheet suggest 8 bit pressure), otherwise, for
ABS_PRESSURE, when config the same max and min value, weston will
meet the following issue,

[17:19:39.183] event1  - ADS7846 Touchscreen: is tagged by udev as: Touchscreen
[17:19:39.183] event1  - ADS7846 Touchscreen: kernel bug: device has min == max on ABS_PRESSURE
[17:19:39.183] event1  - ADS7846 Touchscreen: was rejected
[17:19:39.183] event1  - not using input device '/dev/input/event1'

This will then cause the APP weston-touch-calibrator can't list touch devices.

root@imx6ul7d:~# weston-touch-calibrator
could not load cursor 'dnd-move'
could not load cursor 'dnd-copy'
could not load cursor 'dnd-none'
No devices listed.

And accroding to binding Doc, "ti,x-max", "ti,y-max", "ti,pressure-max"
belong to the deprecated properties, so remove them. Also for "ti,x-min",
"ti,y-min", "ti,x-plate-ohms", the value set in dts equal to the default
value in driver, so are redundant, also remove here.

Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Haibo Chen 2022-07-25 18:16:22 +08:00 committed by Greg Kroah-Hartman
parent aec01503ba
commit 0b2013ace8
1 changed files with 1 additions and 6 deletions
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7
arch/arm/boot/dts/imx7d-sdb.dts
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@ -177,12 +177,7 @@
interrupt-parent = <&gpio2>;
interrupts = <29 0>;
pendown-gpio = <&gpio2 29 GPIO_ACTIVE_HIGH>;
ti,x-min = /bits/ 16 <0>;
ti,x-max = /bits/ 16 <0>;
ti,y-min = /bits/ 16 <0>;
ti,y-max = /bits/ 16 <0>;
ti,pressure-max = /bits/ 16 <0>;
ti,x-plate-ohms = /bits/ 16 <400>;
touchscreen-max-pressure = <255>;
wakeup-source;
};
};