diff --git a/litex_boards/platforms/efinix_t8f81_dev_kit.py b/litex_boards/platforms/efinix_t8f81_dev_kit.py
index 870d445..983b680 100644
--- a/litex_boards/platforms/efinix_t8f81_dev_kit.py
+++ b/litex_boards/platforms/efinix_t8f81_dev_kit.py
@@ -52,6 +52,7 @@ _connectors = [
 
 class Platform(EfinixPlatform):
     default_clk_name = "clk33"
+    default_clk_freq = 33.333e6
     default_clk_period = 1e9/33.333e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/efinix_titanium_ti60_f225_dev_kit.py b/litex_boards/platforms/efinix_titanium_ti60_f225_dev_kit.py
index a1620e9..71cd848 100644
--- a/litex_boards/platforms/efinix_titanium_ti60_f225_dev_kit.py
+++ b/litex_boards/platforms/efinix_titanium_ti60_f225_dev_kit.py
@@ -183,6 +183,7 @@ def rgmii_ethernet_qse_ios(con, n=""):
 
 class Platform(EfinixPlatform):
     default_clk_name   = "clk25"
+    default_clk_freq   = 25e6
     default_clk_period = 1e9/50e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/efinix_trion_t120_bga576_dev_kit.py b/litex_boards/platforms/efinix_trion_t120_bga576_dev_kit.py
index 81b7f6f..a0e19c2 100644
--- a/litex_boards/platforms/efinix_trion_t120_bga576_dev_kit.py
+++ b/litex_boards/platforms/efinix_trion_t120_bga576_dev_kit.py
@@ -174,6 +174,7 @@ def usb_pmod_io(pmod):
 
 class Platform(EfinixPlatform):
     default_clk_name   = "clk40"
+    default_clk_freq   = 40e6
     default_clk_period = 1e9/40e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/efinix_trion_t20_bga256_dev_kit.py b/litex_boards/platforms/efinix_trion_t20_bga256_dev_kit.py
index e3f88df..04435f7 100644
--- a/litex_boards/platforms/efinix_trion_t20_bga256_dev_kit.py
+++ b/litex_boards/platforms/efinix_trion_t20_bga256_dev_kit.py
@@ -113,6 +113,7 @@ _connectors = [
 
 class Platform(EfinixPlatform):
     default_clk_name   = "clk50"
+    default_clk_freq   = 50e6
     default_clk_period = 1e9/50e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/efinix_trion_t20_mipi_dev_kit.py b/litex_boards/platforms/efinix_trion_t20_mipi_dev_kit.py
index 8746b3b..15b7e2c 100644
--- a/litex_boards/platforms/efinix_trion_t20_mipi_dev_kit.py
+++ b/litex_boards/platforms/efinix_trion_t20_mipi_dev_kit.py
@@ -64,6 +64,7 @@ _connectors = []
 
 class Platform(EfinixPlatform):
     default_clk_name   = "clk50"
+    default_clk_freq   = 50e6
     default_clk_period = 1e9/50e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/efinix_xyloni_dev_kit.py b/litex_boards/platforms/efinix_xyloni_dev_kit.py
index 350f09b..d11c7b5 100644
--- a/litex_boards/platforms/efinix_xyloni_dev_kit.py
+++ b/litex_boards/platforms/efinix_xyloni_dev_kit.py
@@ -71,6 +71,7 @@ _connectors = [
 
 class Platform(EfinixPlatform):
     default_clk_name = "clk33"
+    default_clk_freq = 33.333e6
     default_clk_period = 1e9/33.333e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/jungle_electronics_fireant.py b/litex_boards/platforms/jungle_electronics_fireant.py
index 376463f..82660c5 100644
--- a/litex_boards/platforms/jungle_electronics_fireant.py
+++ b/litex_boards/platforms/jungle_electronics_fireant.py
@@ -49,6 +49,7 @@ _connectors = [
 
 class Platform(EfinixPlatform):
     default_clk_name   = "clk33"
+    default_clk_freq   = 33.33e6
     default_clk_period = 1e9/33.33e6
 
     def __init__(self, toolchain="efinity"):
diff --git a/litex_boards/platforms/limesdr_mini_v2.py b/litex_boards/platforms/limesdr_mini_v2.py
index 41b3c32..ab2ff79 100644
--- a/litex_boards/platforms/limesdr_mini_v2.py
+++ b/litex_boards/platforms/limesdr_mini_v2.py
@@ -36,9 +36,9 @@ _io = [
     # SPIFlash
     ("spiflash", 0,
         Subsignal("cs_n", Pins("U17")),
-        Subsignal("clk",  Pins("U16")),
-        Subsignal("miso", Pins("U18")),
-        Subsignal("mosi", Pins("T18")),
+        #Subsignal("clk",  Pins("U16")),
+        Subsignal("miso", Pins("T18")),
+        Subsignal("mosi", Pins("U18")),
         IOStandard("LVCMOS33"),
     ),
 
diff --git a/litex_boards/targets/efinix_t8f81_dev_kit.py b/litex_boards/targets/efinix_t8f81_dev_kit.py
index 528ca3a..9c91107 100755
--- a/litex_boards/targets/efinix_t8f81_dev_kit.py
+++ b/litex_boards/targets/efinix_t8f81_dev_kit.py
@@ -13,6 +13,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import efinix_t8f81_dev_kit
 
@@ -28,16 +29,25 @@ class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq):
         self.rst    = Signal()
         self.cd_sys = ClockDomain()
+        self.cd_rst = ClockDomain(reset_less=True)
 
         # # #
 
         clk33 = platform.request("clk33")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk33)
+
+        # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL.
         self.pll = pll = TRIONPLL(platform)
-        self.comb += pll.reset.eq(~rst_n | self.rst)
-        pll.register_clkin(clk33, 33.333e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk33, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
 
 # BaseSoC ------------------------------------------------------------------------------------------
diff --git a/litex_boards/targets/efinix_ti375_c529_dev_kit.py b/litex_boards/targets/efinix_ti375_c529_dev_kit.py
index e13b60f..c6b9477 100755
--- a/litex_boards/targets/efinix_ti375_c529_dev_kit.py
+++ b/litex_boards/targets/efinix_ti375_c529_dev_kit.py
@@ -10,6 +10,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex.build.io import DDROutput, DDRInput, SDROutput, SDRTristate
 from litex.build.generic_platform import Subsignal, Pins, Misc, IOStandard
@@ -42,7 +43,7 @@ from liteeth.phy.trionrgmii import LiteEthPHYRGMII
 
 class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq, cpu_clk_freq):
-        #self.rst    = Signal()
+        self.rst    = Signal()
         self.cd_sys    = ClockDomain()
         self.cd_usb    = ClockDomain()
         self.cd_video  = ClockDomain()
@@ -50,6 +51,7 @@ class _CRG(LiteXModule):
         self.cd_eth    = ClockDomain()
         self.cd_eth_90 = ClockDomain()
         self.cd_eth_rx = ClockDomain()
+        self.cd_rst   = ClockDomain(reset_less=True)
 
         # # #
 
@@ -58,10 +60,18 @@ class _CRG(LiteXModule):
         clk25  = platform.request("clk25")
         rst_n  = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk100)
+
+        # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL.
         self.pll = pll = TITANIUMPLL(platform)
-        self.comb += pll.reset.eq(~rst_n)
-        pll.register_clkin(clk100, 100e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk100, platform.default_clk_freq)
         # You can use CLKOUT0 only for clocks with a maximum frequency of 4x
         # (integer) of the reference clock. If all your system clocks do not fall within
         # this range, you should dedicate one unused clock for CLKOUT0.
diff --git a/litex_boards/targets/efinix_titanium_ti60_f225_dev_kit.py b/litex_boards/targets/efinix_titanium_ti60_f225_dev_kit.py
index 9f3c539..bf03dbb 100755
--- a/litex_boards/targets/efinix_titanium_ti60_f225_dev_kit.py
+++ b/litex_boards/targets/efinix_titanium_ti60_f225_dev_kit.py
@@ -10,6 +10,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import efinix_titanium_ti60_f225_dev_kit
 
@@ -31,16 +32,25 @@ class _CRG(LiteXModule):
         self.cd_sys      = ClockDomain()
         self.cd_sys2x    = ClockDomain()
         self.cd_sys2x_ps = ClockDomain()
+        self.cd_rst      = ClockDomain(reset_less=True)
 
         # # #
 
         clk25 = platform.request("clk25")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk25)
+
+        # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL
         self.pll = pll = TITANIUMPLL(platform)
-        self.comb += pll.reset.eq(~rst_n | self.rst)
-        pll.register_clkin(clk25, 25e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk25, platform.default_clk_freq)
         # You can use CLKOUT0 only for clocks with a maximum frequency of 4x
         # (integer) of the reference clock. If all your system clocks do not fall within
         # this range, you should dedicate one unused clock for CLKOUT0.
diff --git a/litex_boards/targets/efinix_trion_t120_bga576_dev_kit.py b/litex_boards/targets/efinix_trion_t120_bga576_dev_kit.py
index 587ec5f..22aee54 100755
--- a/litex_boards/targets/efinix_trion_t120_bga576_dev_kit.py
+++ b/litex_boards/targets/efinix_trion_t120_bga576_dev_kit.py
@@ -13,6 +13,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import efinix_trion_t120_bga576_dev_kit
 
@@ -29,20 +30,27 @@ from liteeth.phy.trionrgmii import LiteEthPHYRGMII
 
 class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq):
-        #self.rst    = Signal()
+        self.rst    = Signal()
         self.cd_sys = ClockDomain()
+        self.cd_rst = ClockDomain(reset_less=True)
 
         # # #
 
         clk40 = platform.request("clk40")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk40)
+
+         # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
 
         # PLL
         self.pll = pll = TRIONPLL(platform)
-        #self.comb += pll.reset.eq(~rst_n | self.rst)
-        self.comb += pll.reset.eq(~rst_n)
-        pll.register_clkin(clk40, 40e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk40, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True, name="axi_clk")
 
 # BaseSoC ------------------------------------------------------------------------------------------
diff --git a/litex_boards/targets/efinix_trion_t20_bga256_dev_kit.py b/litex_boards/targets/efinix_trion_t20_bga256_dev_kit.py
index 92fe6e2..a082961 100755
--- a/litex_boards/targets/efinix_trion_t20_bga256_dev_kit.py
+++ b/litex_boards/targets/efinix_trion_t20_bga256_dev_kit.py
@@ -35,6 +35,7 @@ class _CRG(LiteXModule):
         self.rst       = Signal()
         self.cd_sys    = ClockDomain()
         self.cd_sys_ps = ClockDomain()
+        self.cd_rst    = ClockDomain(reset_less=True)
 
         # # #
 
@@ -42,16 +43,18 @@ class _CRG(LiteXModule):
         clk50 = platform.request("clk50")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk50)
+
         # A pulse is necessary to do a reset.
         self.rst_pulse = Signal()
-        reset_timer = WaitTimer(25e-6*sys_clk_freq)
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
         self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
         self.comb += reset_timer.wait.eq(self.rst)
 
         # PLL.
         self.pll = pll = TRIONPLL(platform)
         self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
-        pll.register_clkin(clk50, 50e6)
+        pll.register_clkin(clk50, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
         pll.create_clkout(self.cd_sys_ps, sys_clk_freq, phase=180)
 
@@ -69,7 +72,7 @@ class BaseSoC(SoCCore):
 
         # SDR SDRAM --------------------------------------------------------------------------------
         if not self.integrated_main_ram_size and sys_clk_freq <= 50e6 :
-            self.specials += ClkOutput(ClockSignal(self.cd_sys_ps), platform.request("sdram_clock"))
+            self.specials += ClkOutput(ClockSignal("sys_ps"), platform.request("sdram_clock"))
 
             self.sdrphy = GENSDRPHY(platform.request("sdram"), sys_clk_freq)
             self.add_sdram("sdram",
diff --git a/litex_boards/targets/efinix_trion_t20_mipi_dev_kit.py b/litex_boards/targets/efinix_trion_t20_mipi_dev_kit.py
index e117289..92133db 100755
--- a/litex_boards/targets/efinix_trion_t20_mipi_dev_kit.py
+++ b/litex_boards/targets/efinix_trion_t20_mipi_dev_kit.py
@@ -10,6 +10,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import efinix_trion_t20_mipi_dev_kit
 
@@ -26,16 +27,25 @@ class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq):
         self.rst    = Signal()
         self.cd_sys = ClockDomain()
+        self.cd_rst = ClockDomain(reset_less=True)
 
         # # #
 
         clk50 = platform.request("clk50")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk50)
+
+         # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL
         self.pll = pll = TRIONPLL(platform)
-        self.comb += pll.reset.eq(~rst_n | self.rst)
-        pll.register_clkin(clk50, 50e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk50, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
 
 # BaseSoC ------------------------------------------------------------------------------------------
diff --git a/litex_boards/targets/efinix_xyloni_dev_kit.py b/litex_boards/targets/efinix_xyloni_dev_kit.py
index 1dfcc5c..17fbb7f 100755
--- a/litex_boards/targets/efinix_xyloni_dev_kit.py
+++ b/litex_boards/targets/efinix_xyloni_dev_kit.py
@@ -12,6 +12,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import efinix_xyloni_dev_kit
 
@@ -27,16 +28,25 @@ class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq):
         self.rst    = Signal()
         self.cd_sys = ClockDomain()
+        self.cd_rst = ClockDomain(reset_less=True)
 
         # # #
 
         clk33 = platform.request("clk33")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk33)
+
+        # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL.
         self.pll = pll = TRIONPLL(platform)
-        self.comb += pll.reset.eq(~rst_n | self.rst)
-        pll.register_clkin(clk33, 33.333e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk33, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
 
 # BaseSoC ------------------------------------------------------------------------------------------
diff --git a/litex_boards/targets/jungle_electronics_fireant.py b/litex_boards/targets/jungle_electronics_fireant.py
index 91e288c..a6fa79b 100755
--- a/litex_boards/targets/jungle_electronics_fireant.py
+++ b/litex_boards/targets/jungle_electronics_fireant.py
@@ -13,6 +13,7 @@ from migen import *
 from migen.genlib.resetsync import AsyncResetSynchronizer
 
 from litex.gen import *
+from litex.gen.genlib.misc import WaitTimer
 
 from litex_boards.platforms import jungle_electronics_fireant
 
@@ -31,16 +32,25 @@ class _CRG(LiteXModule):
     def __init__(self, platform, sys_clk_freq):
         self.rst    = Signal()
         self.cd_sys = ClockDomain()
+        self.cd_rst = ClockDomain(reset_less=True)
 
         # # #
 
         clk33 = platform.request("clk33")
         rst_n = platform.request("user_btn", 0)
 
+        self.comb += self.cd_rst.clk.eq(clk33)
+
+        # A pulse is necessary to do a reset.
+        self.rst_pulse = Signal()
+        self.reset_timer = reset_timer = ClockDomainsRenamer("rst")(WaitTimer(25e-6*platform.default_clk_freq))
+        self.comb += self.rst_pulse.eq(self.rst ^ reset_timer.done)
+        self.comb += reset_timer.wait.eq(self.rst)
+
         # PLL.
         self.pll = pll = TRIONPLL(platform)
-        self.comb += pll.reset.eq(~rst_n | self.rst)
-        pll.register_clkin(clk33, 33.333e6)
+        self.comb += pll.reset.eq(~rst_n | self.rst_pulse)
+        pll.register_clkin(clk33, platform.default_clk_freq)
         pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True)
 
 # Default peripherals
diff --git a/litex_boards/targets/sipeed_tang_nano_4k.py b/litex_boards/targets/sipeed_tang_nano_4k.py
index afb9f6a..69e6d1a 100755
--- a/litex_boards/targets/sipeed_tang_nano_4k.py
+++ b/litex_boards/targets/sipeed_tang_nano_4k.py
@@ -86,12 +86,12 @@ class BaseSoC(SoCCore):
             # Use EMCU's SRAM.
             self.bus.add_region("sram", SoCRegion(
                 origin = self.cpu.mem_map["sram"],
-                size   = 16 * kB,
+                size   = 16 * KILOBYTE,
             ))
             # Use ECMU's FLASH as ROM.
             self.bus.add_region("rom", SoCRegion(
                 origin = self.cpu.mem_map["rom"],
-                size   = 32 * kB,
+                size   = 32 * KILOBYTE,
                 linker = True,
             ))
         # No Gowin EMCU ----------------------------------------------------------------------------