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bram: Remove combinational loop on stall
author
Benjamin Herrenschmidt
<benh@kernel.crashing.org>
Fri, 12 Jun 2020 11:47:06 +0000
(21:47 +1000)
committer
Benjamin Herrenschmidt
<benh@kernel.crashing.org>
Sat, 13 Jun 2020 01:38:34 +0000
(11:38 +1000)
It hurts timing and is pointless
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
soc.vhdl
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diff --git
a/soc.vhdl
b/soc.vhdl
index 23d388528c1e6b5932dfd93f5ec7e971ac8a2e33..7c8e825438929d8431dcae97405f116772007022 100644
(file)
--- a/
soc.vhdl
+++ b/
soc.vhdl
@@
-609,7
+609,7
@@
begin
no_bram: if MEMORY_SIZE = 0 generate
wb_bram_out.ack <= wb_bram_in.cyc and wb_bram_in.stb;
wb_bram_out.dat <= x"FFFFFFFFFFFFFFFF";
- wb_bram_out.stall <=
wb_bram_in.cyc and
not wb_bram_out.ack;
+ wb_bram_out.stall <= not wb_bram_out.ack;
end generate;
-- DMI(debug bus) <-> JTAG bridge