linux-kernel - [PATCH 2/2] dt-bindings: i2c: imx-lpi2c: Add bus recovery example

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Date:   Mon, 29 May 2023 15:43:02 +0800
From:   carlos.song@....com
To:     aisheng.dong@....com, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        Anson.Huang@....com
Cc:     carlos.song@....com, xiaoning.wang@....com, haibo.chen@....com,
        linux-imx@....com, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] dt-bindings: i2c: imx-lpi2c: Add bus recovery example

From: Clark Wang <xiaoning.wang@....com>

Add i2c bus recovery configuration example.

Signed-off-by: Clark Wang <xiaoning.wang@....com>
Signed-off-by: Carlos Song <carlos.song@....com>
---
 .../devicetree/bindings/i2c/i2c-imx-lpi2c.yaml   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
index 4656f5112b84..62ee457496e4 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-imx-lpi2c.yaml
@@ -58,6 +58,16 @@ properties:
   power-domains:
     maxItems: 1
 
+  pinctrl-names:
+    minItems: 1
+    maxItems: 3
+
+  scl-gpios:
+    maxItems: 1
+
+  sda-gpios:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -70,6 +80,7 @@ examples:
   - |
     #include <dt-bindings/clock/imx7ulp-clock.h>
     #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/gpio/gpio.h>
 
     i2c@...50000 {
         compatible = "fsl,imx7ulp-lpi2c";
@@ -78,4 +89,9 @@ examples:
         interrupts = <GIC_SPI 37 IRQ_TYPE_LEVEL_HIGH>;
         clocks = <&clks IMX7ULP_CLK_LPI2C7>,
                  <&clks IMX7ULP_CLK_NIC1_BUS_DIV>;
+        pinctrl-names = "default","gpio";
+        pinctrl-0 = <&pinctrl_i2c>;
+        pinctrl-1 = <&pinctrl_i2c_recovery>;
+        scl-gpios = <&gpio5 14 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+        sda-gpios = <&gpio5 15 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
     };
-- 
2.34.1