Input: ti_am335x_tsc - fix spelling mistake in TSC/ADC DT binding

There was a spelling mistake on TSC/ADC binding where "coordinate" was
spelled as "coordiante".

We can't simply fix the error due to DT being an ABI, the approach taken
was to first use correct spelling and if that fails, fall back to
miss-spelled version.

It's unfortunate that has creeped into the tree.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

3 files changed, 10 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
index 491c97b78384..878549ba814d 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
@@ -6,7 +6,7 @@ Required properties:
         ti,wires: Wires refer to application modes i.e. 4/5/8 wire touchscreen
                   support on the platform.
         ti,x-plate-resistance: X plate resistance
-        ti,coordiante-readouts: The sequencer supports a total of 16
+        ti,coordinate-readouts: The sequencer supports a total of 16
                                 programmable steps each step is used to
                                 read a single coordinate. A single
                                 readout is enough but multiple reads can
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index e8ec8756e498..c5b73bcd3686 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -509,7 +509,7 @@
         tsc {
                 ti,wires = <4>;
                 ti,x-plate-resistance = <200>;
-                ti,coordiante-readouts = <5>;
+                ti,coordinate-readouts = <5>;
                 ti,wire-config = <0x00 0x11 0x22 0x33>;
         };
 
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index df9b24f7e2cb..ad7564296ddf 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
         if (err < 0)
                 return err;
 
-        err = of_property_read_u32(node, "ti,coordiante-readouts",
+        /*
+         * Try with the new binding first. If it fails, try again with
+         * bogus, miss-spelled version.
+         */
+        err = of_property_read_u32(node, "ti,coordinate-readouts",
                         &ts_dev->coordinate_readouts);
         if (err < 0)
+                err = of_property_read_u32(node, "ti,coordiante-readouts",
+                                &ts_dev->coordinate_readouts);
+        if (err < 0)
                 return err;
 
         return of_property_read_u32_array(node, "ti,wire-config",