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From:   Camel Guo <camel.guo@axis.com>
To:     <lgirdwood@gmail.com>, <broonie@kernel.org>, <tiwai@suse.com>,
        <dmurphy@ti.com>
CC:     <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
        <kernel@axis.com>, Camel Guo <camelg@axis.com>
Subject: [PATCH v2 1/3] dt-bindings: tlv320adcx140: Add GPIO config and drive config
Date:   Fri, 11 Sep 2020 10:07:51 +0200
Message-ID: <20200911080753.30342-1-camel.guo@axis.com>
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From: Camel Guo <camelg@axis.com>

Add properties for configuring the General Purpose Input Outputs (GPIO).
There are 2 settings for GPIO, configuration and the output drive type.

Signed-off-by: Camel Guo <camelg@axis.com>
---
 .../bindings/sound/tlv320adcx140.yaml         | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
index f578f17f3e04..7b0b4554da59 100644
--- a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
+++ b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
@@ -134,6 +134,49 @@ patternProperties:
        4d - Drive weak low and active high
        5d - Drive Hi-Z and active high
 
+  ti,gpio-config:
+    description: |
+       Defines the configuration and output driver for the general purpose
+       input and output pin (GPIO1). Its value is a pair, the first value is for
+       the configuration type and the second value is for the output drive
+       type. The array is defined as <GPIO1_CFG GPIO1_DRV>
+
+       configuration for the GPIO pin can be one of the following:
+       0 - disabled
+       1 - GPIO1 is configured as a general-purpose output (GPO)
+       2 - (default) GPIO1 is configured as a device interrupt output (IRQ)
+       3 - GPIO1 is configured as a secondary ASI output (SDOUT2)
+       4 - GPIO1 is configured as a PDM clock output (PDMCLK)
+       8 - GPIO1 is configured as an input to control when MICBIAS turns on or
+           off (MICBIAS_EN)
+       9 - GPIO1 is configured as a general-purpose input (GPI)
+       10 - GPIO1 is configured as a master clock input (MCLK)
+       11 - GPIO1 is configured as an ASI input for daisy-chain (SDIN)
+       12 - GPIO1 is configured as a PDM data input for channel 1 and channel 2
+            (PDMDIN1)
+       13 - GPIO1 is configured as a PDM data input for channel 3 and channel 4
+            (PDMDIN2)
+       14 - GPIO1 is configured as a PDM data input for channel 5 and channel 6
+            (PDMDIN3)
+       15 - GPIO1 is configured as a PDM data input for channel 7 and channel 8
+            (PDMDIN4)
+
+       output drive type for the GPIO pin can be one of the following:
+       0 - Hi-Z output
+       1 - Drive active low and active high
+       2 - (default) Drive active low and weak high
+       3 - Drive active low and Hi-Z
+       4 - Drive weak low and active high
+       5 - Drive Hi-Z and active high
+
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32-array
+      - minItems: 2
+        maxItems: 2
+        items:
+          maximum: 15
+        default: [2, 2]
+
 required:
   - compatible
   - reg
@@ -150,6 +193,7 @@ examples:
         ti,mic-bias-source = <6>;
         ti,pdm-edge-select = <0 1 0 1>;
         ti,gpi-config = <4 5 6 7>;
+        ti,gpio-config = <10 2>;
         ti,gpo-config-1 = <0 0>;
         ti,gpo-config-2 = <0 0>;
         reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
-- 
2.20.1