dt-bindings: pinctrl: qcom: Add support for ipq5018

Add device tree binding Documentation details for ipq5018
pinctrl driver.
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Co-developed-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
Signed-off-by: Nitheesh Sekar <quic_nsekar@quicinc.com>
Co-developed-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Signed-off-by: Sricharan Ramabadhran <quic_srichara@quicinc.com>
Link: https://lore.kernel.org/r/20230608122152.3930377-4-quic_srichara@quicinc.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,ipq5018-tlmm.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/qcom,ipq5018-tlmm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm IPQ5018 TLMM pin controller
+
+maintainers:
+  - Bjorn Andersson <andersson@kernel.org>
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+description:
+  Top Level Mode Multiplexer pin controller in Qualcomm IPQ5018 SoC.
+
+properties:
+  compatible:
+    const: qcom,ipq5018-tlmm
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+  "#interrupt-cells": true
+  gpio-controller: true
+  "#gpio-cells": true
+  gpio-ranges: true
+  wakeup-parent: true
+
+  gpio-reserved-ranges:
+    minItems: 1
+    maxItems: 24
+
+  gpio-line-names:
+    maxItems: 47
+
+patternProperties:
+  "-state$":
+    oneOf:
+      - $ref: "#/$defs/qcom-ipq5018-tlmm-state"
+      - patternProperties:
+          "-pins$":
+            $ref: "#/$defs/qcom-ipq5018-tlmm-state"
+        additionalProperties: false
+
+$defs:
+  qcom-ipq5018-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
+    unevaluatedProperties: false
+
+    properties:
+      pins:
+        description:
+          List of gpio pins affected by the properties specified in this
+          subnode.
+        items:
+          pattern: "^gpio([0-9]|[1-3][0-9]|4[0-6])$"
+        minItems: 1
+        maxItems: 8
+
+      function:
+        description:
+          Specify the alternative function to be configured for the specified
+          pins.
+
+        enum: [ atest_char, audio_pdm0, audio_pdm1, audio_rxbclk, audio_rxd,
+                audio_rxfsync, audio_rxmclk, audio_txbclk, audio_txd,
+                audio_txfsync, audio_txmclk, blsp0_i2c, blsp0_spi, blsp0_uart0,
+                blsp0_uart1, blsp1_i2c0, blsp1_i2c1, blsp1_spi0, blsp1_spi1,
+                blsp1_uart0, blsp1_uart1, blsp1_uart2, blsp2_i2c0, blsp2_i2c1,
+                blsp2_spi, blsp2_spi0, blsp2_spi1, btss, burn0, burn1, cri_trng,
+                cri_trng0, cri_trng1, cxc_clk, cxc_data, dbg_out, eud_gpio,
+                gcc_plltest, gcc_tlmm, gpio, led0, led2, mac0, mac1, mdc, mdio,
+                pcie0_clk, pcie0_wake, pcie1_clk, pcie1_wake, pll_test,
+                prng_rosc, 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, qspi_clk, qspi_cs,
+                qspi_data, reset_out, sdc1_clk, sdc1_cmd, sdc1_data, wci_txd,
+                wci_rxd, wsa_swrm, wsi_clk3, wsi_data3, wsis_reset, xfem ]
+
+    required:
+      - pins
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    tlmm: pinctrl@1000000 {
+        compatible = "qcom,ipq5018-tlmm";
+        reg = <0x01000000 0x300000>;
+        gpio-controller;
+        #gpio-cells = <2>;
+        gpio-ranges = <&tlmm 0 0 47>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+        interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+
+        uart-w-state {
+            rx-pins {
+                pins = "gpio33";
+                function = "blsp1_uart1";
+                bias-pull-down;
+            };
+
+            tx-pins {
+                pins = "gpio34";
+                function = "blsp1_uart1";
+                bias-pull-down;
+            };
+        };
+    };
+...