add sipeed tang nano 20k

doc/boards.yml

@@ -579,12 +579,19 @@
   Memory: OK
   Flash: IF/EF
 
-- ID: tangprimer20k
+- ID: tangnano20k
-  Description: Sipeed Tang Primer 20k
+  Description: Sipeed Tang Nano 20k
-  URL: https://wiki.sipeed.com/hardware/en/tang/Tang-Nano-Doc/summary.html
+  URL: https://wiki.sipeed.com/nano20k
   FPGA: Gowin Arora GW2A(R)-18(C)
   Memory: OK
-  Flash: IF
+  Flash: EF
+
+- ID: tangprimer20k
+  Description: Sipeed Tang Primer 20k
+  URL: https://wiki.sipeed.com/en/primer20k
+  FPGA: Gowin Arora GW2A(R)-18(C)
+  Memory: OK
+  Flash: EF
 
 - ID: tec0117
   Description: Trenz Gowin LittleBee (TEC0117)

doc/vendors/gowin.rst

@@ -31,8 +31,11 @@ where ``BOARD_NAME`` is:
 
 * ``tec0117``
 * ``tangnano``
+* ``tangnano1k``
 * ``tangnano4k``
 * ``tangnano9k``
+* ``tangnano20k``
+* ``tangprimer20k``
 * ``runber``
 
 Flash

src/board.hpp

@@ -189,6 +189,7 @@ static std::map <std::string, target_board_t> board_list = {
 	JTAG_BOARD("tangnano1k",      "", "ft2232",     0, 0, CABLE_DEFAULT),
 	JTAG_BOARD("tangnano4k",      "", "ft2232",     0, 0, CABLE_DEFAULT),
 	JTAG_BOARD("tangnano9k",      "", "ft2232",     0, 0, CABLE_DEFAULT),
+	JTAG_BOARD("tangnano20k",     "", "ft2232",     0, 0, CABLE_DEFAULT),
 	JTAG_BOARD("tangprimer20k",   "", "ft2232",     0, 0, CABLE_DEFAULT),
 	JTAG_BOARD("tec0117",         "", "ft2232",     0, 0, CABLE_DEFAULT),
 	SPI_BOARD("titanium_ti60_f225","efinix", "efinix_spi_ft4232",