From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Mon, 12 Nov 2018 09:12:10 +0000 (+0100)
Subject: targets/versa_ecp5: increase sys_clk_freq to 50MHz
X-Git-Tag: 24jan2021_ls180~1507
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8574c62f75b5f38be3eb9537a2fec7502c4923fa;p=litex.git

targets/versa_ecp5: increase sys_clk_freq to 50MHz
---

diff --git a/litex/boards/targets/versa_ecp5.py b/litex/boards/targets/versa_ecp5.py
index f5db19f0..1e3e6c70 100755
--- a/litex/boards/targets/versa_ecp5.py
+++ b/litex/boards/targets/versa_ecp5.py
@@ -28,7 +28,7 @@ class _CRG(Module):
 
         # sys_4x_clk divider
         self.comb += self.cd_sys_4x.clk.eq(clk100)
-        sys_4x_divider = Signal(2)
+        sys_4x_divider = Signal(1)
         self.sync.sys_4x += sys_4x_divider.eq(sys_4x_divider + 1)
 
         # sys_clk
@@ -40,7 +40,7 @@ class _CRG(Module):
         # sys_clk phase shifted (for sdram)
         sdram_ps_clk = self.cd_sys.clk
         # FIXME: phase shift with luts, needs PLL support.
-        sdram_ps_luts = 5
+        sdram_ps_luts = 2
         for i in range(sdram_ps_luts):
             new_sdram_ps_clk = Signal()
             self.specials += Instance("LUT4",
@@ -60,7 +60,7 @@ class BaseSoC(SoCSDRAM):
     def __init__(self, **kwargs):
         platform = versa_ecp5.Platform(toolchain="prjtrellis")
         platform.add_extension(versa_ecp5._ecp5_soc_hat_io)
-        sys_clk_freq = int(25e6)
+        sys_clk_freq = int(50e6)
         SoCSDRAM.__init__(self, platform, clk_freq=sys_clk_freq,
                           l2_size=32,
                           integrated_rom_size=0x8000,