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examples/litedram_gen: cleanup pins definition

This commit is contained in:
Florent Kermarrec 2018-10-15 09:38:34 +02:00
parent 75b314c8eb
commit f11506accd
1 changed files with 26 additions and 37 deletions
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63
examples/litedram_gen.py
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@ -24,61 +24,50 @@ from litedram.frontend.bist import LiteDRAMBISTChecker
def get_common_ios():
return [
# clk / rst
("clk", 0, Pins("X")),
("rst", 0, Pins("X")),
("clk", 0, Pins(1)),
("rst", 0, Pins(1)),
# serial
("serial", 0,
Subsignal("tx", Pins("X")),
Subsignal("rx", Pins("X"))
Subsignal("tx", Pins(1)),
Subsignal("rx", Pins(1))
),
# crg status
("pll_locked", 0, Pins("X")),
("pll_locked", 0, Pins(1)),
# init status
("init_done", 0, Pins("X")),
("init_error", 0, Pins("X")),
("init_done", 0, Pins(1)),
("init_error", 0, Pins(1)),
# iodelay clk / rst
("clk_iodelay", 0, Pins("X")),
("rst_iodelay", 0, Pins("X")),
("clk_iodelay", 0, Pins(1)),
("rst_iodelay", 0, Pins(1)),
# user clk / rst
("user_clk", 0, Pins("X")),
("user_rst", 0, Pins("X"))
("user_clk", 0, Pins(1)),
("user_rst", 0, Pins(1))
]
def get_dram_ios(core_config):
sdram_module = core_config["sdram_module"]
return [
("ddram", 0,
Subsignal("a", Pins(
"X "*log2_int(core_config["sdram_module"].nrows))),
Subsignal("ba", Pins(
"X "*log2_int(core_config["sdram_module"].nbanks))),
Subsignal("ras_n", Pins("X")),
Subsignal("cas_n", Pins("X")),
Subsignal("we_n", Pins("X")),
Subsignal("cs_n", Pins(
"X "*core_config["sdram_rank_nb"])),
Subsignal("dm", Pins(
"X "*2*core_config["sdram_module_nb"])),
Subsignal("dq", Pins(
"X "*16*core_config["sdram_module_nb"])),
Subsignal("dqs_p", Pins(
"X "*2*core_config["sdram_module_nb"])),
Subsignal("dqs_n", Pins(
"X "*2*core_config["sdram_module_nb"])),
Subsignal("clk_p", Pins(
"X "*core_config["sdram_rank_nb"])),
Subsignal("clk_n", Pins(
"X "*core_config["sdram_rank_nb"])),
Subsignal("cke", Pins(
"X "*core_config["sdram_rank_nb"])),
Subsignal("odt", Pins(
"X "*core_config["sdram_rank_nb"])),
Subsignal("reset_n", Pins("X"))
Subsignal("a", Pins(log2_int(core_config["sdram_module"].nrows))),
Subsignal("ba", Pins(log2_int(core_config["sdram_module"].nbanks))),
Subsignal("ras_n", Pins(1)),
Subsignal("cas_n", Pins(1)),
Subsignal("we_n", Pins(1)),
Subsignal("cs_n", Pins(core_config["sdram_rank_nb"])),
Subsignal("dm", Pins(2*core_config["sdram_module_nb"])),
Subsignal("dq", Pins(16*core_config["sdram_module_nb"])),
Subsignal("dqs_p", Pins(2*core_config["sdram_module_nb"])),
Subsignal("dqs_n", Pins(2*core_config["sdram_module_nb"])),
Subsignal("clk_p", Pins(core_config["sdram_rank_nb"])),
Subsignal("clk_n", Pins(core_config["sdram_rank_nb"])),
Subsignal("cke", Pins(core_config["sdram_rank_nb"])),
Subsignal("odt", Pins(core_config["sdram_rank_nb"])),
Subsignal("reset_n", Pins(1))
),
]