diff --git a/litex/soc/integration/soc.py b/litex/soc/integration/soc.py
index 9d03ce75d..a8ca903f8 100644
--- a/litex/soc/integration/soc.py
+++ b/litex/soc/integration/soc.py
@@ -1514,7 +1514,7 @@ class LiteXSoC(SoC):
             self.check_if_exists(name + "_phy")
             self.check_if_exists(name + "_mmap")
             spiflash_pads   = self.platform.request(name if mode == "1x" else name + mode)
-            spiflash_phy    = LiteSPIPHY(spiflash_pads, module)
+            spiflash_phy    = LiteSPIPHY(spiflash_pads, module, default_divisor=max(int(self.sys_clk_freq/clk_freq), 2))
             spiflash_mmap   = LiteSPI(spiflash_phy, clk_freq=clk_freq, mmap_endianness=self.cpu.endianness, **kwargs)
             setattr(self.submodules, name + "_phy",  spiflash_phy)
             setattr(self.submodules, name + "_mmap", spiflash_mmap)