dt-bindings: pinctrl: Add DT schema for qcom,msm8909-tlmm

Document the "qcom,msm8909-tlmm" compatible for the TLMM/pin control
block in the MSM8909 SoC, together with the allowed GPIOs and functions.
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220628145502.4158234-2-stephan.gerhold@kernkonzept.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/qcom,msm8909-tlmm.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/qcom,msm8909-tlmm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. MSM8909 TLMM block
+
+maintainers:
+  - Stephan Gerhold <stephan@gerhold.net>
+
+description: |
+  This binding describes the Top Level Mode Multiplexer (TLMM) block found
+  in the MSM8909 platform.
+
+allOf:
+  - $ref: /schemas/pinctrl/qcom,tlmm-common.yaml#
+
+properties:
+  compatible:
+    const: qcom,msm8909-tlmm
+
+  reg:
+    maxItems: 1
+
+  interrupts: true
+  interrupt-controller: true
+  '#interrupt-cells': true
+  gpio-controller: true
+  gpio-reserved-ranges: true
+  '#gpio-cells': true
+  gpio-ranges: true
+  wakeup-parent: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+patternProperties:
+  '-state$':
+    oneOf:
+      - $ref: "#/$defs/qcom-msm8909-tlmm-state"
+      - patternProperties:
+          ".*":
+            $ref: "#/$defs/qcom-msm8909-tlmm-state"
+
+$defs:
+  qcom-msm8909-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:
+          oneOf:
+            - pattern: "^gpio([0-9]|[1-9][0-9]|10[0-9]|11[0-7])$"
+            - enum: [ sdc1_clk, sdc1_cmd, sdc1_data, sdc2_clk, sdc2_cmd,
+                      sdc2_data, qdsd_clk, qdsd_cmd, qdsd_data0, qdsd_data1,
+                      qdsd_data2, qdsd_data3 ]
+        minItems: 1
+        maxItems: 16
+
+      function:
+        description:
+          Specify the alternative function to be configured for the specified
+          pins.
+        enum: [ adsp_ext, atest_bbrx0, atest_bbrx1, atest_char, atest_char0,
+                atest_char1, atest_char2, atest_char3, atest_combodac,
+                atest_gpsadc0, atest_gpsadc1, atest_wlan0, atest_wlan1,
+                bimc_dte0, bimc_dte1, blsp_i2c1, blsp_i2c2, blsp_i2c3,
+                blsp_i2c4, blsp_i2c5, blsp_i2c6, blsp_spi1, blsp_spi1_cs1,
+                blsp_spi1_cs2, blsp_spi1_cs3, blsp_spi2, blsp_spi2_cs1,
+                blsp_spi2_cs2, blsp_spi2_cs3, blsp_spi3, blsp_spi3_cs1,
+                blsp_spi3_cs2, blsp_spi3_cs3, blsp_spi4, blsp_spi5, blsp_spi6,
+                blsp_uart1, blsp_uart2, blsp_uim1, blsp_uim2, cam_mclk,
+                cci_async, cci_timer0, cci_timer1, cci_timer2, cdc_pdm0,
+                dbg_out, dmic0_clk, dmic0_data, ebi0_wrcdc, ebi2_a, ebi2_lcd,
+                ext_lpass, gcc_gp1_clk_a, gcc_gp1_clk_b, gcc_gp2_clk_a,
+                gcc_gp2_clk_b, gcc_gp3_clk_a, gcc_gp3_clk_b, gcc_plltest, gpio,
+                gsm0_tx, ldo_en, ldo_update, m_voc, mdp_vsync, modem_tsync,
+                nav_pps, nav_tsync, pa_indicator, pbs0, pbs1, pbs2,
+                pri_mi2s_data0_a, pri_mi2s_data0_b, pri_mi2s_data1_a,
+                pri_mi2s_data1_b, pri_mi2s_mclk_a, pri_mi2s_mclk_b,
+                pri_mi2s_sck_a, pri_mi2s_sck_b, pri_mi2s_ws_a, pri_mi2s_ws_b,
+                prng_rosc, pwr_crypto_enabled_a, pwr_crypto_enabled_b,
+                pwr_modem_enabled_a, pwr_modem_enabled_b, pwr_nav_enabled_a,
+                pwr_nav_enabled_b, 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_tracectl_a,
+                qdss_tracedata_a, qdss_tracedata_b, sd_write, sec_mi2s,
+                smb_int, ssbi0, ssbi1, uim1_clk, uim1_data, uim1_present,
+                uim1_reset, uim2_clk, uim2_data, uim2_present, uim2_reset,
+                uim3_clk, uim3_data, uim3_present, uim3_reset, uim_batt,
+                wcss_bt, wcss_fm, wcss_wlan ]
+
+      bias-disable: true
+      bias-pull-down: true
+      bias-pull-up: true
+      drive-strength: true
+      input-enable: true
+      output-high: true
+      output-low: true
+
+    required:
+      - pins
+      - function
+
+    additionalProperties: false
+
+examples:
+  - |
+        #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+        pinctrl@1000000 {
+                compatible = "qcom,msm8909-tlmm";
+                reg = <0x1000000 0x300000>;
+                interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
+                gpio-controller;
+                #gpio-cells = <2>;
+                gpio-ranges = <&tlmm 0 0 117>;
+                interrupt-controller;
+                #interrupt-cells = <2>;
+
+                gpio-wo-subnode-state {
+                        pins = "gpio1";
+                        function = "gpio";
+                };
+
+                uart-w-subnodes-state {
+                        rx {
+                                pins = "gpio4";
+                                function = "blsp_uart1";
+                                bias-pull-up;
+                        };
+
+                        tx {
+                                pins = "gpio5";
+                                function = "blsp_uart1";
+                                bias-disable;
+                        };
+                };
+        };
+...