arm64: dts: stratix10: add i2c pins for pinctrl

Add the I2C pins definition to the Stratix10 devkit. This allows for the
I2C driver to use pinctrl on the pins to allow for GPIO recovery.

Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
---
v2: remove underscores in node names

diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
index 17752ca743e55365a8977a526c1630f451e9783c..38ae674f2f02aad7b424687e2d5bd9288d158e49 100644 (file)
--- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
+++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
@@ -65,6 +65,22 @@
        };
 };
 
+&pinctrl0 {
+       i2c1_pmx_func: i2c1-pmx-func {
+               pinctrl-single,pins = <
+                       0x78   0x4   /* I2C1_SDA (IO6-B) PIN30SEL) */
+                       0x7c   0x4   /* I2C1_SCL (IO7-B) PIN31SEL */
+               >;
+       };
+
+       i2c1_pmx_func_gpio: i2c1-pmx-func-gpio {
+               pinctrl-single,pins = <
+                       0x78   0x8   /* I2C1_SDA (IO6-B) PIN30SEL) */
+                       0x7c   0x8   /* I2C1_SCL (IO7-B) PIN31SEL */
+               >;
+       };
+};
+
 &gpio1 {
        status = "okay";
 };
@@ -131,6 +147,13 @@
        i2c-sda-falling-time-ns = <890>;  /* hcnt */
        i2c-sdl-falling-time-ns = <890>;  /* lcnt */
 
+       pinctrl-names = "default", "gpio";
+       pinctrl-0 = <&i2c1_pmx_func>;
+       pinctrl-1 = <&i2c1_pmx_func_gpio>;
+
+       scl-gpios = <&portb 6 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+       sda-gpios = <&portb 7 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
        adc@14 {
                compatible = "lltc,ltc2497";
                reg = <0x14>;