Merge pull request #2148 from dayjaby/backwards_compatibility_python3.7

backwards compatibility with python3.7

litex/soc/cores/clock/xilinx_usp.py

@@ -143,7 +143,8 @@ def compute_config(self) -> Dict[str, Any]:
 
                     dividers = list(clkdiv_range(*self.clkout_divide_range))
                     # Add specific range dividers if they exist
-                    if specific_div_range := getattr(self, f"clkout{n}_divide_range", None):
+                    specific_div_range = getattr(self, f"clkout{n}_divide_range", None)
+                    if specific_div_range:
                         dividers.extend(clkdiv_range(*specific_div_range))
 
                     # For clkout0, CLKOUT[0]_DIVIDE_F also has range 2.0 to 128.0 with step 0.125

litex/tools/litex_json2dts_linux.py

@@ -100,7 +100,7 @@ def get_ip_address(prefix):
     # Clocks ---------------------------------------------------------------------------------------
 
     for c in [c for c in d["constants"].keys() if c.endswith("config_clock_frequency")]:
-        name = c.removesuffix("config_clock_frequency") + "sys_clk"
+        name = c[:len(c) - len("config_clock_frequency")] + "sys_clk"
         dts += """
         {name}: clock-{freq} {{
             compatible = "fixed-clock";