dts: arm: renesas: add CANFD dllclk limit on Renesas RA family

Add information on CANFD dllclk upper and lower limits on these SoCs:
- RA8: RA8M1, RA8D1, RA8T1
- RA6: RA6E2
- RA4: RA4E2

Signed-off-by: The Nguyen <[email protected]>

Author: thenguyenyf

dts/arm/renesas/ra/ra4/r7fa4e2b93cfm.dtsi

@@ -75,6 +75,7 @@
 			interrupt-names = "rxf", "glerr";
 			clocks = <&pclkb 0 0>, <&pclka 0 0>;
 			clock-names = "opclk", "ramclk";
+			dll-max-freq = <DT_FREQ_M(40)>;
 			reg = <0x400b0000 0x2000>;
 			status = "disabled";
 

dts/arm/renesas/ra/ra6/r7fa6e2bx.dtsi

@@ -53,6 +53,7 @@
 			interrupt-names = "rxf", "glerr";
 			clocks = <&pclkb 0 0>, <&pclka 0 0>;
 			clock-names = "opclk", "ramclk";
+			dll-max-freq = <DT_FREQ_M(40)>;
 			reg = <0x400b0000 0x2000>;
 			status = "disabled";
 

dts/arm/renesas/ra/ra8/ra8x1.dtsi

@@ -559,6 +559,8 @@
 			interrupt-names = "rxf", "glerr";
 			clocks = <&pclka 0 0>, <&pclke 0 0>;
 			clock-names = "opclk", "ramclk";
+			dll-min-freq = <DT_FREQ_M(8)>;
+			dll-max-freq = <DT_FREQ_M(80)>;
 			reg = <0x40380000 0x4000>;
 			status = "disabled";