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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt
....@@ -5,39 +5,105 @@
55  - compatible: "st,stmpe-ts"
66 
77 Optional properties:
8
-- st,sample-time: ADC converstion time in number of clock.  (0 -> 36 clocks, 1 ->
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-  44 clocks, 2 -> 56 clocks, 3 -> 64 clocks, 4 -> 80 clocks, 5 -> 96 clocks, 6
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-  -> 144 clocks), recommended is 4.
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-- st,mod-12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC)
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-- st,ref-sel: ADC reference source (0 -> internal reference, 1 -> external
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-  reference)
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-- st,adc-freq: ADC Clock speed (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz)
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-- st,ave-ctrl: Sample average control (0 -> 1 sample, 1 -> 2 samples, 2 -> 4
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-  samples, 3 -> 8 samples)
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-- st,touch-det-delay: Touch detect interrupt delay (0 -> 10 us, 1 -> 50 us, 2 ->
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-  100 us, 3 -> 500 us, 4-> 1 ms, 5 -> 5 ms, 6 -> 10 ms, 7 -> 50 ms) recommended
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-  is 3
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-- st,settling: Panel driver settling time (0 -> 10 us, 1 -> 100 us, 2 -> 500 us, 3
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-  -> 1 ms, 4 -> 5 ms, 5 -> 10 ms, 6 for 50 ms, 7 -> 100 ms) recommended is 2
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-- st,fraction-z: Length of the fractional part in z (fraction-z ([0..7]) = Count of
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-  the fractional part) recommended is 7
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-- st,i-drive: current limit value of the touchscreen drivers (0 -> 20 mA typical 35
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-  mA max, 1 -> 50 mA typical 80 mA max)
8
+- st,ave-ctrl		: Sample average control
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+				0 -> 1 sample
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+				1 -> 2 samples
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+				2 -> 4 samples
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+				3 -> 8 samples
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+- st,touch-det-delay	: Touch detect interrupt delay (recommended is 3)
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+				0 -> 10 us
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+				1 -> 50 us
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+				2 -> 100 us
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+				3 -> 500 us
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+				4 -> 1 ms
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+				5 -> 5 ms
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+				6 -> 10 ms
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+				7 -> 50 ms
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+- st,settling		: Panel driver settling time (recommended is 2)
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+				0 -> 10 us
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+				1 -> 100 us
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+				2 -> 500 us
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+				3 -> 1 ms
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+				4 -> 5 ms
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+				5 -> 10 ms
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+				6 -> 50 ms
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+				7 -> 100 ms
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+- st,fraction-z		: Length of the fractional part in z (recommended is 7)
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+			  (fraction-z ([0..7]) = Count of the fractional part)
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+- st,i-drive		: current limit value of the touchscreen drivers
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+				0 -> 20 mA (typical 35mA max)
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+				1 -> 50 mA (typical 80 mA max)
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+
37
+Optional properties common with MFD (deprecated):
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+ - st,sample-time	: ADC conversion time in number of clock.
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+				0 -> 36 clocks
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+				1 -> 44 clocks
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+				2 -> 56 clocks
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+				3 -> 64 clocks
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+				4 -> 80 clocks (recommended)
44
+				5 -> 96 clocks
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+				6 -> 124 clocks
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+ - st,mod-12b		: ADC Bit mode
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+				0 -> 10bit ADC
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+				1 -> 12bit ADC
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+ - st,ref-sel		: ADC reference source
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+				0 -> internal
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+				1 -> external
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+ - st,adc-freq		: ADC Clock speed
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+				0 -> 1.625 MHz
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+				1 -> 3.25 MHz
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+				2 || 3 -> 6.5 MHz
2656 
2757 Node name must be stmpe_touchscreen and should be child node of stmpe node to
2858 which it belongs.
2959 
60
+Note that common ADC settings of stmpe_touchscreen (child) will take precedence
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+over the settings done in MFD.
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+
3063 Example:
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+
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+stmpe811@41 {
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+	compatible = "st,stmpe811";
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+	pinctrl-names = "default";
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+	pinctrl-0 = <&pinctrl_touch_int>;
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+	#address-cells = <1>;
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+	#size-cells = <0>;
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+	reg = <0x41>;
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+	interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
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+	interrupt-parent = <&gpio4>;
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+	interrupt-controller;
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+	id = <0>;
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+	blocks = <0x5>;
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+	irq-trigger = <0x1>;
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+	/* Common ADC settings */
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+	/* 3.25 MHz ADC clock speed */
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+	st,adc-freq = <1>;
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+	/* 12-bit ADC */
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+	st,mod-12b = <1>;
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+	/* internal ADC reference */
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+	st,ref-sel = <0>;
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+	/* ADC converstion time: 80 clocks */
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+	st,sample-time = <4>;
3187 
3288 	stmpe_touchscreen {
3389 		compatible = "st,stmpe-ts";
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-		st,sample-time = <4>;
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-		st,mod-12b = <1>;
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-		st,ref-sel = <0>;
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-		st,adc-freq = <1>;
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-		st,ave-ctrl = <1>;
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-		st,touch-det-delay = <2>;
40
-		st,settling = <2>;
90
+		reg = <0>;
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+		/* 8 sample average control */
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+		st,ave-ctrl = <3>;
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+		/* 5 ms touch detect interrupt delay */
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+		st,touch-det-delay = <5>;
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+		/* 1 ms panel driver settling time */
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+		st,settling = <3>;
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+		/* 7 length fractional part in z */
4198 		st,fraction-z = <7>;
99
+		/*
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+		 * 50 mA typical 80 mA max touchscreen drivers
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+		 * current limit value
102
+		 */
42103 		st,i-drive = <1>;
43104 	};
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+	stmpe_adc {
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+		compatible = "st,stmpe-adc";
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+		st,norequest-mask = <0x0F>;
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+	};
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+};