[PATCH v4 2/3] imx: imx93_evk: add rtc PCF2131

[Joy Zou]

support rtc PCF2131 for imx93.

Signed-off-by: Joy Zou <joy.zou at nxp.com>
---
Changes in v4:
1. remove arch/arm/dts/imx93_11x11_evk.dts change because it can sync from kernel dts.
2. add the RTC support to the -u-boot.dtsi.
3. assign the rtc0 to rtc at 53 in order to avoid date reset fail.

Changes in v3:
1. remove arch/arm/dts/imx93.dtsi modification because this change have existed.

Changes in v2:
1. use the flag bootph-pre-ram instead of uboot,dm-spl.
---
 arch/arm/dts/imx93-11x11-evk-u-boot.dtsi | 34 ++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/dts/imx93-11x11-evk-u-boot.dtsi b/arch/arm/dts/imx93-11x11-evk-u-boot.dtsi
index a99ba99bfb..85aaf0844f 100644
--- a/arch/arm/dts/imx93-11x11-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx93-11x11-evk-u-boot.dtsi
@@ -19,6 +19,11 @@
 			method = "smc";
 		};
 	};
+
+	aliases {
+		rtc0 = &pcf2131;
+	};
+
 };
 
 &{/soc at 0} {
@@ -112,6 +117,25 @@
 	bootph-some-ram;
 };
 
+&lpi2c3 {
+	bootph-pre-ram;
+	#address-cells = <1>;
+	#size-cells = <0>;
+	clock-frequency = <400000>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_lpi2c3>;
+	pinctrl-1 = <&pinctrl_lpi2c3>;
+	status = "okay";
+
+	pcf2131: rtc at 53 {
+		compatible = "nxp,pcf2131";
+		reg = <0x53>;
+		interrupt-parent = <&pcal6524>;
+		interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
+		status = "okay";
+	};
+};
+
 &{/soc at 0/bus at 44000000/i2c at 44350000/pmic at 25} {
 	bootph-pre-ram;
 	bootph-some-ram;
@@ -127,6 +151,16 @@
 	bootph-some-ram;
 };
 
+&iomuxc {
+	pinctrl_lpi2c3: lpi2c3grp {
+		bootph-pre-ram;
+		fsl,pins = <
+			MX93_PAD_GPIO_IO28__LPI2C3_SDA                  0x40000b9e
+			MX93_PAD_GPIO_IO29__LPI2C3_SCL                  0x40000b9e
+		>;
+	};
+};
+
 &fec {
 	phy-reset-gpios = <&pcal6524 16 GPIO_ACTIVE_LOW>;
 	phy-reset-duration = <15>;
-- 
2.37.1