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firmware/libboard/sdram: kusddrphy now use time mode for odelaye3/idelaye3, now reloading dqs delay_value (500ps) with software

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This commit is contained in:
Florent Kermarrec 2018-03-08 09:56:45 +01:00
parent 8bd15d36c4
commit 8475c21c46
1 changed files with 10 additions and 0 deletions
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10
artiq/firmware/libboard/sdram.rs
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@ -35,6 +35,8 @@ mod ddr {
unsafe fn write_level(logger: &mut Option<&mut fmt::Write>, unsafe fn write_level(logger: &mut Option<&mut fmt::Write>,
delay: &mut [u16; DQS_SIGNAL_COUNT], delay: &mut [u16; DQS_SIGNAL_COUNT],
high_skew: &mut [bool; DQS_SIGNAL_COUNT]) -> bool { high_skew: &mut [bool; DQS_SIGNAL_COUNT]) -> bool {
#[cfg(kusddrphy)]
log!(logger, "DQS initial delay: {} taps\n", ddrphy::wdly_dqs_taps_read());
log!(logger, "Write leveling: "); log!(logger, "Write leveling: ");
enable_write_leveling(true); enable_write_leveling(true);
@ -52,6 +54,10 @@ mod ddr {
ddrphy::wdly_dq_rst_write(1); ddrphy::wdly_dq_rst_write(1);
ddrphy::wdly_dqs_rst_write(1); ddrphy::wdly_dqs_rst_write(1);
#[cfg(kusddrphy)]
for _ in 0..ddrphy::wdly_dqs_taps_read() {
ddrphy::wdly_dqs_inc_write(1);
}
ddrphy::wlevel_strobe_write(1); ddrphy::wlevel_strobe_write(1);
spin_cycles(10); spin_cycles(10);
@ -268,9 +274,13 @@ pub unsafe fn init(mut _logger: Option<&mut fmt::Write>) -> bool {
#[cfg(has_ddrphy)] #[cfg(has_ddrphy)]
{ {
#[cfg(kusddrphy)]
csr::ddrphy::en_vtc_write(0);
if !ddr::level(&mut _logger) { if !ddr::level(&mut _logger) {
return false return false
} }
#[cfg(kusddrphy)]
csr::ddrphy::en_vtc_write(1);
} }
csr::dfii::control_write(sdram_phy::DFII_CONTROL_SEL); csr::dfii::control_write(sdram_phy::DFII_CONTROL_SEL);