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icebox: Add PLL ICEGATE function 

Only tested on UP5k. For others, it was just deduced.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2023-02-01 10:22:27 +01:00
parent 45f5e5f388
commit bb519401cd
2 changed files with 23 additions and 0 deletions
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11
docs/io_tile.html
View File

@ -428,6 +428,9 @@ follows (bits listed from LSB to MSB):
<tr><td>0 3</td><td><span style="font-family:monospace">PLLCONFIG_8</span></td><td rowspan="1"><span style="font-family:monospace">TEST_MODE</span></td></tr> <tr><td>0 3</td><td><span style="font-family:monospace">PLLCONFIG_8</span></td><td rowspan="1"><span style="font-family:monospace">TEST_MODE</span></td></tr>
<tr><td>0 5</td><td><span style="font-family:monospace">PLLCONFIG_2</span></td><td rowspan="1">Enable ICEGATE for <span style="font-family:monospace">PLLOUTGLOBALA</span></td></tr>
<tr><td>0 5</td><td><span style="font-family:monospace">PLLCONFIG_4</span></td><td rowspan="1">Enable ICEGATE for <span style="font-family:monospace">PLLOUTGLOBALB</span></td></tr>
</table></td><td> </table></td><td>
<table class="ctab"> <table class="ctab">
@ -502,4 +505,12 @@ PIOs can only be used as output Pins by the FPGA fabric when the PLL ports
are being used. are being used.
</p> </p>
<p>
The input path that are stolen are also used to implement the ICEGATE function.
If the input pin type of the input path being stolen is set to
<span style="font-family:monospace">PIN_INPUT_LATCH</span>, then the ICEGATE
function is enabled for the corresponding <span style="font-family:monospace">CORE</span>
output of the PLL.
</p>
</body></html> </body></html>

12
icebox/icebox.py
View File

@ -1795,6 +1795,8 @@ pllinfo_db = {
"FILTER_RANGE_1": ( 0, 2, "PLLCONFIG_7"), "FILTER_RANGE_1": ( 0, 2, "PLLCONFIG_7"),
"FILTER_RANGE_2": ( 0, 2, "PLLCONFIG_8"), "FILTER_RANGE_2": ( 0, 2, "PLLCONFIG_8"),
"TEST_MODE": ( 0, 3, "PLLCONFIG_8"), "TEST_MODE": ( 0, 3, "PLLCONFIG_8"),
"ENABLE_ICEGATE_PORTA": ( 0, 5, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": ( 0, 5, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
"PLLOUT_A": ( 6, 0, 1), "PLLOUT_A": ( 6, 0, 1),
@ -1887,6 +1889,8 @@ pllinfo_db = {
"FILTER_RANGE_1": (11, 0, "PLLCONFIG_7"), "FILTER_RANGE_1": (11, 0, "PLLCONFIG_7"),
"FILTER_RANGE_2": (11, 0, "PLLCONFIG_8"), "FILTER_RANGE_2": (11, 0, "PLLCONFIG_8"),
"TEST_MODE": (12, 0, "PLLCONFIG_8"), "TEST_MODE": (12, 0, "PLLCONFIG_8"),
"ENABLE_ICEGATE_PORTA": (14, 0, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": (14, 0, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
# TODO(awygle) confirm these # TODO(awygle) confirm these
@ -1981,6 +1985,8 @@ pllinfo_db = {
"FILTER_RANGE_1": (11, 31, "PLLCONFIG_7"), "FILTER_RANGE_1": (11, 31, "PLLCONFIG_7"),
"FILTER_RANGE_2": (11, 31, "PLLCONFIG_8"), "FILTER_RANGE_2": (11, 31, "PLLCONFIG_8"),
"TEST_MODE": (12, 31, "PLLCONFIG_8"), "TEST_MODE": (12, 31, "PLLCONFIG_8"),
"ENABLE_ICEGATE_PORTA": (14, 31, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": (14, 31, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
"PLLOUT_A": ( 12, 31, 1), "PLLOUT_A": ( 12, 31, 1),
@ -2045,6 +2051,8 @@ pllinfo_db = {
"TEST_MODE": (12, 21, "PLLCONFIG_8"), "TEST_MODE": (12, 21, "PLLCONFIG_8"),
"DELAY_ADJMODE_FB": (13, 21, "PLLCONFIG_4"), "DELAY_ADJMODE_FB": (13, 21, "PLLCONFIG_4"),
"DELAY_ADJMODE_REL": (13, 21, "PLLCONFIG_9"), "DELAY_ADJMODE_REL": (13, 21, "PLLCONFIG_9"),
"ENABLE_ICEGATE_PORTA": (14, 21, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": (14, 21, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
"PLLOUT_A": ( 12, 21, 1), "PLLOUT_A": ( 12, 21, 1),
@ -2138,6 +2146,8 @@ pllinfo_db = {
"FILTER_RANGE_1": ( 15, 0, "PLLCONFIG_7"), "FILTER_RANGE_1": ( 15, 0, "PLLCONFIG_7"),
"FILTER_RANGE_2": ( 15, 0, "PLLCONFIG_8"), "FILTER_RANGE_2": ( 15, 0, "PLLCONFIG_8"),
"TEST_MODE": ( 16, 0, "PLLCONFIG_8"), "TEST_MODE": ( 16, 0, "PLLCONFIG_8"),
"ENABLE_ICEGATE_PORTA": ( 18, 0, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": ( 18, 0, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
"PLLOUT_A": ( 16, 0, 1), "PLLOUT_A": ( 16, 0, 1),
@ -2231,6 +2241,8 @@ pllinfo_db = {
"FILTER_RANGE_1": ( 15, 33, "PLLCONFIG_7"), "FILTER_RANGE_1": ( 15, 33, "PLLCONFIG_7"),
"FILTER_RANGE_2": ( 15, 33, "PLLCONFIG_8"), "FILTER_RANGE_2": ( 15, 33, "PLLCONFIG_8"),
"TEST_MODE": ( 16, 33, "PLLCONFIG_8"), "TEST_MODE": ( 16, 33, "PLLCONFIG_8"),
"ENABLE_ICEGATE_PORTA": ( 18, 33, "PLLCONFIG_2"), # Controls global output only !
"ENABLE_ICEGATE_PORTB": ( 18, 33, "PLLCONFIG_4"), # Controls global output only !
# PLL Ports # PLL Ports
"PLLOUT_A": ( 16, 33, 1), "PLLOUT_A": ( 16, 33, 1),