cif: fix ddr2 configuration
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@ -180,19 +180,27 @@ static void command_p{n}(int cmd)
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elif sdram_phy.phy_settings.memtype == "DDR2":
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bl = 2*sdram_phy.phy_settings.nphases
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mr = log2_int(bl) + (cl << 4)
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wr = 2
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mr = log2_int(bl) + (cl << 4) + (wr << 9)
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emr = 0
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emr2 = 0
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emr3 = 0
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reset_dll = 1 << 8
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ocd = 7 << 7
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init_sequence = [
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("Bring CKE high", 0x0000, 0, cmds["CKE"], 2000),
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("Precharge All", 0x0400, 0, cmds["PRECHARGE_ALL"], 0),
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("Load Extended Mode Register 3", emr3, 3, cmds["MODE_REGISTER"], 0),
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("Load Extended Mode Register 2", emr2, 2, cmds["MODE_REGISTER"], 0),
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("Load Extended Mode Register", emr, 1, cmds["MODE_REGISTER"], 0),
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("Load Mode Register / Reset DLL, CL={0:d}, BL={1:d}".format(cl, bl), mr + reset_dll, 0, cmds["MODE_REGISTER"], 200),
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("Precharge All", 0x0400, 0, cmds["PRECHARGE_ALL"], 0),
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("Auto Refresh", 0x0, 0, cmds["AUTO_REFRESH"], 4),
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("Auto Refresh", 0x0, 0, cmds["AUTO_REFRESH"], 4),
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("Load Mode Register / CL={0:d}, BL={1:d}".format(cl, bl), mr, 0, cmds["MODE_REGISTER"], 200)
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("Load Mode Register / CL={0:d}, BL={1:d}".format(cl, bl), mr, 0, cmds["MODE_REGISTER"], 200),
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("Load Extended Mode Register / OCD Default", emr+ocd, 1, cmds["MODE_REGISTER"], 0),
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("Load Extended Mode Register / OCD Exit", emr, 1, cmds["MODE_REGISTER"], 0),
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]
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for comment, a, ba, cmd, delay in init_sequence:
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