arm: dts: am335x: add pruss uart controller node

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>

Author: RobertCNelson

src/arm/am33xx-l4.dtsi

@@ -833,9 +833,25 @@
 					reg = <0x26000 0x2000>;
 				};
 
+				pruss_iepclk_mux: iepclk-mux {
+					#clock-cells = <0>;
+					clocks = <&l3_gclk>,        /* icss_iep_gclk */
+						 <&pruss_ocp_gclk>; /* icss_ocp_gclk */
+				};
+
 				pruss_iep: iep@2e000 {
-					compatible = "syscon";
+					compatible = "ti,am3356-icss-iep";
 					reg = <0x2e000 0x31c>;
+					clocks = <&pruss_iepclk_mux>;
+				};
+
+				pruss_uart: serial@28000 {
+					compatible = "ti,pruss-uart";
+					reg = <0x28000 0x38>;
+					clocks = <&dpll_per_m2_ck>;
+					interrupt-parent = <&pruss_intc>;
+					interrupts = <6>;
+					status = "disabled";
 				};
 
 				pruss_mii_rt: mii-rt@32000 {

src/arm/dra7-pruss.dtsi

@@ -47,9 +47,16 @@
 				reg = <0x26000 0x2000>;
 			};
 
+			pruss1_iepclk_mux: iepclk-mux {
+				#clock-cells = <0>;
+				clocks = <&dpll_gmac_m3x2_ck>,  /* icss_iep_clk */
+					 <&dpll_gmac_h13x2_ck>; /* icss_clk */
+			};
+
 			pruss1_iep: iep@2e000 {
-				compatible = "syscon";
+				compatible = "ti,am5728-icss-iep";
 				reg = <0x2e000 0x31c>;
+				clocks = <&pruss1_iepclk_mux>;
 			};
 
 			pruss1_mii_rt: mii-rt@32000 {
@@ -155,9 +162,16 @@
 				reg = <0x26000 0x2000>;
 			};
 
+			pruss2_iepclk_mux: iepclk-mux {
+				#clock-cells = <0>;
+				clocks = <&dpll_gmac_m3x2_ck>,  /* icss_iep_clk */
+					 <&dpll_gmac_h13x2_ck>; /* icss_clk */
+			};
+
 			pruss2_iep: iep@2e000 {
-				compatible = "syscon";
+				compatible = "ti,am5728-icss-iep";
 				reg = <0x2e000 0x31c>;
+				clocks = <&pruss2_iepclk_mux>;
 			};
 
 			pruss2_mii_rt: mii-rt@32000 {