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gowin: GW5AST work around

This commit is contained in:
Gwenhael Goavec-Merou 2023-12-11 07:18:28 +01:00
parent 1c7a4afd01
commit d8186c5e8a
1 changed files with 3 additions and 1 deletions
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4
src/gowin.cpp
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@ -344,7 +344,7 @@ void Gowin::programSRAM()
displayReadReg("before program sram", readStatusReg()); displayReadReg("before program sram", readStatusReg());
} }
/* Work around FPGA stuck in Bad Command status */ /* Work around FPGA stuck in Bad Command status */
if (is_gw5a) { if (is_gw5a) { // 20231112: no more required but left
reset(); reset();
_jtag->set_state(Jtag::RUN_TEST_IDLE); _jtag->set_state(Jtag::RUN_TEST_IDLE);
_jtag->toggleClk(1000000); _jtag->toggleClk(1000000);
@ -774,6 +774,8 @@ bool Gowin::eraseSRAM()
* is send and goes high after erase * is send and goes high after erase
* this check seems enough * this check seems enough
*/ */
if (_idcode == 0x0001081b) // seems required for GW5AST...
sendClkUs(10000);
if (pollFlag(STATUS_MEMORY_ERASE, STATUS_MEMORY_ERASE)) { if (pollFlag(STATUS_MEMORY_ERASE, STATUS_MEMORY_ERASE)) {
if (_verbose) if (_verbose)
displayReadReg("after erase sram", readStatusReg()); displayReadReg("after erase sram", readStatusReg());