[PATCH v1 3/4] dt-bindings: pinctrl: qcom,hawi-lpass-lpi-pinctrl: Add Hawi LPI pinctrl

[Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>]

Add bindings for the pin controller in Low Power Audio SubSystem (LPASS)
of Qualcomm Hawi SoC.

The controller has 23 GPIOs (gpio0-gpio22) with functions including
SoundWire, I2S, DMIC, VA I2S, ext_mclk1, slimbus and lpass_lpi_dbg_clk.

Signed-off-by: Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
---
 .../pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml  | 109 ++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
new file mode 100644
index 000000000..af6858175
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml
@@ -0,0 +1,109 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/qcom,hawi-lpass-lpi-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Hawi SoC LPASS LPI TLMM
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+  - Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
+  - Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
+
+description:
+  Top Level Mode Multiplexer pin controller in the Low Power Audio SubSystem
+  (LPASS) Low Power Island (LPI) of Qualcomm Hawi SoC.
+
+properties:
+  compatible:
+    const: qcom,hawi-lpass-lpi-pinctrl
+
+  reg:
+    items:
+      - description: LPASS LPI TLMM Control and Status registers
+
+  clocks:
+    items:
+      - description: LPASS LPR(Low Power Resource) voting clock
+      - description: LPASS Audio voting clock
+
+  clock-names:
+    items:
+      - const: lpr
+      - const: audio
+
+patternProperties:
+  "-state$":
+    oneOf:
+      - $ref: "#/$defs/qcom-hawi-lpass-state"
+      - patternProperties:
+          "-pins$":
+            $ref: "#/$defs/qcom-hawi-lpass-state"
+        additionalProperties: false
+
+$defs:
+  qcom-hawi-lpass-state:
+    type: object
+    description:
+      Pinctrl node's client devices use subnodes for desired pin configuration.
+      Client device subnodes use below standard properties.
+    $ref: qcom,lpass-lpi-common.yaml#/$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[0-9]|2[0-2])$"
+
+      function:
+        enum: [dmic1_clk, dmic1_data, dmic2_clk, dmic2_data, dmic3_clk,
+               dmic3_data, dmic4_clk, dmic4_data, ext_mclk1_a, ext_mclk1_b,
+               ext_mclk1_c, ext_mclk1_d, ext_mclk1_e, gpio, i2s0_clk,
+               i2s0_data, i2s0_ws, i2s1_clk, i2s1_data, i2s1_ws, i2s2_clk,
+               i2s2_data, i2s2_ws, i2s3_clk, i2s3_data, i2s3_ws,
+               lpass_lpi_dbg_clk, qca_swr_clk, qca_swr_data, slimbus_clk,
+               slimbus_data, swr_rx_clk, swr_rx_data, swr_tx_clk, swr_tx_clk1,
+               swr_tx_data, va_i2s0_clk, va_i2s0_data, va_i2s0_ws,
+               wsa2_swr_clk, wsa2_swr_data, wsa_swr_clk, wsa_swr_data]
+        description:
+          Specify the alternative function to be configured for the specified
+          pins.
+
+allOf:
+  - $ref: qcom,lpass-lpi-common.yaml#
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/sound/qcom,q6dsp-lpass-ports.h>
+
+    lpass_tlmm: pinctrl@7f60000 {
+        compatible = "qcom,hawi-lpass-lpi-pinctrl";
+        reg = <0x07f60000 0x20000>;
+
+        clocks = <&q6prmcc LPASS_HW_LPR_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>,
+                 <&q6prmcc LPASS_HW_DCODEC_VOTE LPASS_CLK_ATTRIBUTE_COUPLE_NO>;
+        clock-names = "lpr", "audio";
+
+        gpio-controller;
+        #gpio-cells = <2>;
+        gpio-ranges = <&lpass_tlmm 0 0 23>;
+
+        tx-swr-sleep-clk-state {
+            pins = "gpio0";
+            function = "swr_tx_clk";
+            drive-strength = <2>;
+            bias-pull-down;
+        };
+    };
-- 
2.34.1