dt-bindings: mfd: Convert STMPE to YAML schema

This converts the STMPE MFD device tree bindings to the YAML
schema.

Reference the existing schema for the ADC, just define the
other subnode schemas directly in the MFD schema.

Add two examples so we have examples covering both the simple
GPIO expander and the more complex with ADC and touchscreen.

Some in-tree users do not follow the naming conventions for nodes
so these DTS files need to be augmented to use proper node names
like "adc", "pwm", "gpio", "keyboard-controller" etc before the
bindings take effect on them.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230709-stmpe-dt-bindings-v5-1-34a3d6ee1e57@linaro.org
Signed-off-by: Lee Jones <lee@kernel.org>

1 files changed, 0 insertions, 108 deletions

diff --git a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt b/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt
deleted file mode 100644
index 238b51555c04..000000000000
--- a/Documentation/devicetree/bindings/input/touchscreen/stmpe.txt
+++ /dev/null
@@ -1,108 +0,0 @@
-STMPE Touchscreen
-----------------
-
-Required properties:
- - compatible: "st,stmpe-ts"
-
-Optional properties:
-- st,ave-ctrl		: Sample average control
-				0 -> 1 sample
-				1 -> 2 samples
-				2 -> 4 samples
-				3 -> 8 samples
-- st,touch-det-delay	: Touch detect interrupt delay (recommended is 3)
-				0 -> 10 us
-				1 -> 50 us
-				2 -> 100 us
-				3 -> 500 us
-				4 -> 1 ms
-				5 -> 5 ms
-				6 -> 10 ms
-				7 -> 50 ms
-- st,settling		: Panel driver settling time (recommended is 2)
-				0 -> 10 us
-				1 -> 100 us
-				2 -> 500 us
-				3 -> 1 ms
-				4 -> 5 ms
-				5 -> 10 ms
-				6 -> 50 ms
-				7 -> 100 ms
-- st,fraction-z		: Length of the fractional part in z (recommended is 7)
-			  (fraction-z ([0..7]) = Count of the fractional part)
-- st,i-drive		: current limit value of the touchscreen drivers
-				0 -> 20 mA (typical 35mA max)
-				1 -> 50 mA (typical 80 mA max)
-
-Optional properties common with MFD (deprecated):
- - st,sample-time	: ADC conversion time in number of clock.
-				0 -> 36 clocks
-				1 -> 44 clocks
-				2 -> 56 clocks
-				3 -> 64 clocks
-				4 -> 80 clocks (recommended)
-				5 -> 96 clocks
-				6 -> 124 clocks
- - st,mod-12b		: ADC Bit mode
-				0 -> 10bit ADC
-				1 -> 12bit ADC
- - st,ref-sel		: ADC reference source
-				0 -> internal
-				1 -> external
- - st,adc-freq		: ADC Clock speed
-				0 -> 1.625 MHz
-				1 -> 3.25 MHz
-				2 || 3 -> 6.5 MHz
-
-Node should be child node of stmpe node to which it belongs.
-
-Note that common ADC settings of stmpe_touchscreen (child) will take precedence
-over the settings done in MFD.
-
-Example:
-
-stmpe811@41 {
-	compatible = "st,stmpe811";
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_touch_int>;
-	#address-cells = <1>;
-	#size-cells = <0>;
-	reg = <0x41>;
-	interrupts = <10 IRQ_TYPE_LEVEL_LOW>;
-	interrupt-parent = <&gpio4>;
-	interrupt-controller;
-	id = <0>;
-	blocks = <0x5>;
-	irq-trigger = <0x1>;
-	/* Common ADC settings */
-	/* 3.25 MHz ADC clock speed */
-	st,adc-freq = <1>;
-	/* 12-bit ADC */
-	st,mod-12b = <1>;
-	/* internal ADC reference */
-	st,ref-sel = <0>;
-	/* ADC converstion time: 80 clocks */
-	st,sample-time = <4>;
-
-	stmpe_touchscreen {
-		compatible = "st,stmpe-ts";
-		reg = <0>;
-		/* 8 sample average control */
-		st,ave-ctrl = <3>;
-		/* 5 ms touch detect interrupt delay */
-		st,touch-det-delay = <5>;
-		/* 1 ms panel driver settling time */
-		st,settling = <3>;
-		/* 7 length fractional part in z */
-		st,fraction-z = <7>;
-		/*
-		 * 50 mA typical 80 mA max touchscreen drivers
-		 * current limit value
-		 */
-		st,i-drive = <1>;
-	};
-	stmpe_adc {
-		compatible = "st,stmpe-adc";
-		st,norequest-mask = <0x0F>;
-	};
-};