diff --git a/litex/tools/litex_json2dts_linux.py b/litex/tools/litex_json2dts_linux.py
index 601208e7e..5c806627f 100755
--- a/litex/tools/litex_json2dts_linux.py
+++ b/litex/tools/litex_json2dts_linux.py
@@ -57,11 +57,9 @@ def generate_dts(d, initrd_start=None, initrd_size=None, initrd=None, root_devic
 
     dts += """
         chosen {{
-            bootargs = "mem={main_ram_size_mb}M@0x{main_ram_base:x} {console} {rootfs} init=/sbin/init swiotlb=32";""".format(
-    main_ram_base      = d["memories"]["main_ram"]["base"],
-    main_ram_size_mb   = d["memories"]["main_ram"]["size"] // mB,
-    console            = "console=liteuart earlycon=liteuart,0x{:x}".format(d["csr_bases"]["uart"]),
-    rootfs             = "rootwait root=/dev/{}".format(root_device))
+            bootargs = "{console} {rootfs};""".format(
+    console = "console=liteuart earlycon=liteuart,0x{:x}".format(d["csr_bases"]["uart"]),
+    rootfs  = "rootwait root=/dev/{}".format(root_device))
 
     if initrd_enabled is True:
         dts += """