targets/arty: add fixed sdcard clock and remove sys2x (use NETWORKING interface_type on DDR3).

litex_boards/targets/arty.py

@@ -27,11 +27,11 @@ from liteeth.phy.mii import LiteEthPHYMII
 class _CRG(Module):
     def __init__(self, platform, sys_clk_freq):
         self.clock_domains.cd_sys       = ClockDomain()
-        self.clock_domains.cd_sys2x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x     = ClockDomain(reset_less=True)
         self.clock_domains.cd_sys4x_dqs = ClockDomain(reset_less=True)
         self.clock_domains.cd_clk200    = ClockDomain()
         self.clock_domains.cd_eth       = ClockDomain()
+        self.clock_domains.cd_sdcard    = ClockDomain()
 
         # # #
 
@@ -39,11 +39,11 @@ class _CRG(Module):
         self.comb += pll.reset.eq(~platform.request("cpu_reset"))
         pll.register_clkin(platform.request("clk100"), 100e6)
         pll.create_clkout(self.cd_sys,       sys_clk_freq)
-        pll.create_clkout(self.cd_sys2x,     2*sys_clk_freq)
         pll.create_clkout(self.cd_sys4x,     4*sys_clk_freq)
         pll.create_clkout(self.cd_sys4x_dqs, 4*sys_clk_freq, phase=90)
         pll.create_clkout(self.cd_clk200,    200e6)
         pll.create_clkout(self.cd_eth,       25e6)
+        pll.create_clkout(self.cd_sdcard,    10e6)
 
         self.submodules.idelayctrl = S7IDELAYCTRL(self.cd_clk200)
 
@@ -66,8 +66,7 @@ class BaseSoC(SoCCore):
             self.submodules.ddrphy = s7ddrphy.A7DDRPHY(platform.request("ddram"),
                 memtype        = "DDR3",
                 nphases        = 4,
-                sys_clk_freq   = sys_clk_freq,
-                interface_type = "MEMORY")
+                sys_clk_freq   = sys_clk_freq)
             self.add_csr("ddrphy")
             self.add_sdram("sdram",
                 phy                     = self.ddrphy,