arm64: dts: ti: k3-am69-sk: Add mcu and wakeup uarts

Add wakeup and MCU uart. This allows the device tree usage in
bootloader and firmwares that can configure the same appropriately.

Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Udit Kumar <u-kumar1@ti.com>
Link: https://lore.kernel.org/r/20230602214937.2349545-7-nm@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
index 2194910..125e4af 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts
@@ -21,6 +21,8 @@
        };
 
        aliases {
+               serial0 = &wkup_uart0;
+               serial1 = &mcu_uart0;
                serial2 = &main_uart8;
                mmc0 = &main_sdhci0;
                mmc1 = &main_sdhci1;
@@ -142,6 +144,22 @@
 };
 
 &wkup_pmx2 {
+       wkup_uart0_pins_default: wkup-uart0-pins-default {
+               pinctrl-single,pins = <
+                       J721S2_WKUP_IOPAD(0x070, PIN_INPUT, 0) /* (L37) WKUP_GPIO0_6.WKUP_UART0_CTSn */
+                       J721S2_WKUP_IOPAD(0x074, PIN_INPUT, 0) /* (L36) WKUP_GPIO0_7.WKUP_UART0_RTSn */
+                       J721S2_WKUP_IOPAD(0x048, PIN_INPUT, 0) /* (K35) WKUP_UART0_RXD */
+                       J721S2_WKUP_IOPAD(0x04c, PIN_INPUT, 0) /* (K34) WKUP_UART0_TXD */
+               >;
+       };
+
+       mcu_uart0_pins_default: mcu-uart0-pins-default {
+               pinctrl-single,pins = <
+                       J784S4_WKUP_IOPAD(0x08c, PIN_INPUT, 0) /* (K38) WKUP_GPIO0_13.MCU_UART0_RXD */
+                       J784S4_WKUP_IOPAD(0x088, PIN_OUTPUT, 0) /* (J37) WKUP_GPIO0_12.MCU_UART0_TXD */
+               >;
+       };
+
        mcu_cpsw_pins_default: mcu-cpsw-pins-default {
                pinctrl-single,pins = <
                        J784S4_WKUP_IOPAD(0x02c, PIN_INPUT, 0) /* (A35) MCU_RGMII1_RD0 */
@@ -167,6 +185,19 @@
        };
 };
 
+&wkup_uart0 {
+       /* Firmware usage */
+       status = "reserved";
+       pinctrl-names = "default";
+       pinctrl-0 = <&wkup_uart0_pins_default>;
+};
+
+&mcu_uart0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&mcu_uart0_pins_default>;
+};
+
 &main_uart8 {
        status = "okay";
        pinctrl-names = "default";