dt-bindings: pinctrl: qcom,ipq8074: convert to dtschema

Convert Qualcomm IPQ8074 pin controller bindings to DT schema.  Keep the
parsing of pin configuration subnodes consistent with other Qualcomm
schemas (children named with '-state' suffix, their children with
'-pins').
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20221108142357.67202-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.txt

-Qualcomm Technologies, Inc. IPQ8074 TLMM block
-
-This binding describes the Top Level Mode Multiplexer block found in the
-IPQ8074 platform.
-
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be "qcom,ipq8074-pinctrl"
-
-- reg:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: the base address and size of the TLMM register space.
-
-- interrupts:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: should specify the TLMM summary IRQ.
-
-- interrupt-controller:
-	Usage: required
-	Value type: <none>
-	Definition: identifies this node as an interrupt controller
-
-- #interrupt-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: must be 2. Specifying the pin number and flags, as defined
-		    in <dt-bindings/interrupt-controller/irq.h>
-
-- gpio-controller:
-	Usage: required
-	Value type: <none>
-	Definition: identifies this node as a gpio controller
-
-- #gpio-cells:
-	Usage: required
-	Value type: <u32>
-	Definition: must be 2. Specifying the pin number and flags, as defined
-		    in <dt-bindings/gpio/gpio.h>
-
-- gpio-ranges:
-	Usage: required
-	Definition:  see ../gpio/gpio.txt
-
-- gpio-reserved-ranges:
-	Usage: optional
-	Definition: see ../gpio/gpio.txt
-
-Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
-a general description of GPIO and interrupt bindings.
-
-Please refer to pinctrl-bindings.txt in this directory for details of the
-common pinctrl bindings used by client devices, including the meaning of the
-phrase "pin configuration node".
-
-The pin configuration nodes act as a container for an arbitrary number of
-subnodes. Each of these subnodes represents some desired configuration for a
-pin, a group, or a list of pins or groups. This configuration can include the
-mux function to select on those pin(s)/group(s), and various pin configuration
-parameters, such as pull-up, drive strength, etc.
-
-
-PIN CONFIGURATION NODES:
-
-The name of each subnode is not important; all subnodes should be enumerated
-and processed purely based on their content.
-
-Each subnode only affects those parameters that are explicitly listed. In
-other words, a subnode that lists a mux function but no pin configuration
-parameters implies no information about any pin configuration parameters.
-Similarly, a pin subnode that describes a pullup parameter implies no
-information about e.g. the mux function.
-
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pin configuration subnode:
-
-- pins:
-	Usage: required
-	Value type: <string-array>
-	Definition: List of gpio pins affected by the properties specified in
-		    this subnode.  Valid pins are:
-		    gpio0-gpio69
-
-- function:
-	Usage: required
-	Value type: <string>
-	Definition: Specify the alternative function to be configured for the
-		    specified pins. Functions are only valid for gpio pins.
-		    Valid values are:
-		    atest_char, atest_char0, atest_char1, atest_char2,
-		    atest_char3, audio_rxbclk, audio_rxd, audio_rxfsync,
-		    audio_rxmclk, audio_txbclk, audio_txd, audio_txfsync,
-		    audio_txmclk, blsp0_i2c, blsp0_spi, blsp0_uart, blsp1_i2c,
-		    blsp1_spi, blsp1_uart, blsp2_i2c, blsp2_spi, blsp2_uart,
-		    blsp3_i2c, blsp3_spi, blsp3_spi0, blsp3_spi1, blsp3_spi2,
-		    blsp3_spi3, blsp3_uart, blsp4_i2c0, blsp4_i2c1, blsp4_spi0,
-		    blsp4_spi1, blsp4_uart0, blsp4_uart1, blsp5_i2c, blsp5_spi,
-		    blsp5_uart, burn0, burn1, cri_trng, cri_trng0, cri_trng1,
-		    cxc0, cxc1, dbg_out, gcc_plltest, gcc_tlmm, gpio, ldo_en,
-		    ldo_update, led0, led1, led2, mac0_sa0, mac0_sa1, mac1_sa0,
-		    mac1_sa1, mac1_sa2, mac1_sa3, mac2_sa0, mac2_sa1, mdc,
-		    mdio, pcie0_clk, pcie0_rst, pcie0_wake, pcie1_clk,
-		    pcie1_rst, pcie1_wake, pcm_drx, pcm_dtx, pcm_fsync,
-		    pcm_pclk, pcm_zsi0, pcm_zsi1, prng_rosc, pta1_0, pta1_1,
-		    pta1_2, pta2_0, pta2_1, pta2_2, pwm0, pwm1, pwm2, pwm3,
-		    qdss_cti_trig_in_a0, qdss_cti_trig_in_a1,
-		    qdss_cti_trig_in_b0, qdss_cti_trig_in_b1,
-		    qdss_cti_trig_out_a0, qdss_cti_trig_out_a1,
-		    qdss_cti_trig_out_b0, qdss_cti_trig_out_b1,
-		    qdss_traceclk_a, qdss_traceclk_b, qdss_tracectl_a,
-		    qdss_tracectl_b, qdss_tracedata_a, qdss_tracedata_b,
-		    qpic, rx0, rx1, rx2, sd_card, sd_write, tsens_max, wci2a,
-		    wci2b, wci2c, wci2d
-
-- bias-disable:
-	Usage: optional
-	Value type: <none>
-	Definition: The specified pins should be configured as no pull.
-
-- bias-pull-down:
-	Usage: optional
-	Value type: <none>
-	Definition: The specified pins should be configured as pull down.
-
-- bias-pull-up:
-	Usage: optional
-	Value type: <none>
-	Definition: The specified pins should be configured as pull up.
-
-- output-high:
-	Usage: optional
-	Value type: <none>
-	Definition: The specified pins are configured in output mode, driven
-		    high.
-
-- output-low:
-	Usage: optional
-	Value type: <none>
-	Definition: The specified pins are configured in output mode, driven
-		    low.
-
-- drive-strength:
-	Usage: optional
-	Value type: <u32>
-	Definition: Selects the drive strength for the specified pins, in mA.
-		    Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
-
-Example:
-
-	tlmm: pinctrl@1000000 {
-		compatible = "qcom,ipq8074-pinctrl";
-		reg = <0x1000000 0x300000>;
-		interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
-		gpio-controller;
-		#gpio-cells = <2>;
-		gpio-ranges = <&tlmm 0 0 70>;
-		interrupt-controller;
-		#interrupt-cells = <2>;
-
-		uart2: uart2-default {
-			mux {
-				pins = "gpio23", "gpio24";
-				function = "blsp4_uart1";
-			};
-
-			rx {
-				pins = "gpio23";
-				drive-strength = <4>;
-				bias-disable;
-			};
-
-			tx {
-				pins = "gpio24";
-				drive-strength = <2>;
-				bias-pull-up;
-			};
-		};
-	};

Documentation/devicetree/bindings/pinctrl/qcom,ipq8074-pinctrl.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/qcom,ipq8074-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm IPQ8074 TLMM pin controller
+
+maintainers:
+  - Bjorn Andersson <andersson@kernel.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description:
+  Top Level Mode Multiplexer pin controller in Qualcomm IPQ8074 SoC.
+
+properties:
+  compatible:
+    const: qcom,ipq8074-pinctrl
+
+  reg:
+    maxItems: 1
+
+  interrupts: true
+  interrupt-controller: true
+  "#interrupt-cells": true
+  gpio-controller: true
+  "#gpio-cells": true
+  gpio-ranges: true
+  wakeup-parent: true
+
+  gpio-reserved-ranges:
+    minItems: 1
+    maxItems: 35
+
+  gpio-line-names:
+    maxItems: 70
+
+patternProperties:
+  "-state$":
+    oneOf:
+      - $ref: "#/$defs/qcom-ipq8074-tlmm-state"
+      - patternProperties:
+          "-pins$":
+            $ref: "#/$defs/qcom-ipq8074-tlmm-state"
+        additionalProperties: false
+
+$defs:
+  qcom-ipq8074-tlmm-state:
+    type: object
+    description:
+      Pinctrl node's client devices use subnodes for desired pin configuration.
+      Client device subnodes use below standard properties.
+    $ref: qcom,tlmm-common.yaml#/$defs/qcom-tlmm-state
+
+    properties:
+      pins:
+        description:
+          List of gpio pins affected by the properties specified in this
+          subnode.
+        items:
+          pattern: "^gpio([0-9]|[1-6][0-9]|70)$"
+        minItems: 1
+        maxItems: 36
+
+      function:
+        description:
+          Specify the alternative function to be configured for the specified
+          pins.
+
+        enum: [ gpio, atest_char, atest_char0, atest_char1, atest_char2,
+                atest_char3, audio_rxbclk, audio_rxd, audio_rxfsync,
+                audio_rxmclk, audio_txbclk, audio_txd, audio_txfsync,
+                audio_txmclk, blsp0_i2c, blsp0_spi, blsp0_uart, blsp1_i2c,
+                blsp1_spi, blsp1_uart, blsp2_i2c, blsp2_spi, blsp2_uart,
+                blsp3_i2c, blsp3_spi, blsp3_spi0, blsp3_spi1, blsp3_spi2,
+                blsp3_spi3, blsp3_uart, blsp4_i2c0, blsp4_i2c1, blsp4_spi0,
+                blsp4_spi1, blsp4_uart0, blsp4_uart1, blsp5_i2c, blsp5_spi,
+                blsp5_uart, burn0, burn1, cri_trng, cri_trng0, cri_trng1, cxc0,
+                cxc1, dbg_out, gcc_plltest, gcc_tlmm, ldo_en, ldo_update, led0,
+                led1, led2, mac0_sa0, mac0_sa1, mac1_sa0, mac1_sa1, mac1_sa2,
+                mac1_sa3, mac2_sa0, mac2_sa1, mdc, mdio, pcie0_clk, pcie0_rst,
+                pcie0_wake, pcie1_clk, pcie1_rst, pcie1_wake, pcm_drx, pcm_dtx,
+                pcm_fsync, pcm_pclk, pcm_zsi0, pcm_zsi1, prng_rosc, pta1_0,
+                pta1_1, pta1_2, pta2_0, pta2_1, pta2_2, pwm0, pwm1, pwm2, pwm3,
+                qdss_cti_trig_in_a0, qdss_cti_trig_in_a1, qdss_cti_trig_in_b0,
+                qdss_cti_trig_in_b1, qdss_cti_trig_out_a0,
+                qdss_cti_trig_out_a1, qdss_cti_trig_out_b0,
+                qdss_cti_trig_out_b1, qdss_traceclk_a, qdss_traceclk_b,
+                qdss_tracectl_a, qdss_tracectl_b, qdss_tracedata_a,
+                qdss_tracedata_b, qpic, rx0, rx1, rx2, sd_card, sd_write,
+                tsens_max, wci2a, wci2b, wci2c, wci2d ]
+
+      bias-pull-down: true
+      bias-pull-up: true
+      bias-disable: true
+      drive-strength: true
+      input-enable: true
+      output-high: true
+      output-low: true
+
+    required:
+      - pins
+
+    additionalProperties: false
+
+allOf:
+  - $ref: /schemas/pinctrl/qcom,tlmm-common.yaml#
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    tlmm: pinctrl@1000000 {
+        compatible = "qcom,ipq8074-pinctrl";
+        reg = <0x01000000 0x300000>;
+        gpio-controller;
+        #gpio-cells = <0x2>;
+        gpio-ranges = <&tlmm 0 0 70>;
+        interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-controller;
+        #interrupt-cells = <0x2>;
+
+        serial4-state {
+            pins = "gpio23", "gpio24";
+            function = "blsp4_uart1";
+            drive-strength = <8>;
+            bias-disable;
+        };
+    };