forked from M-Labs/artiq
firmware/ad9154: add sysref scan/conf for jesd sc1
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8212e46f5e
commit
3802c7badb
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@ -1,5 +1,6 @@
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use board::{csr, clock};
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use ad9154_reg;
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use hmc830_7043::{hmc7043};
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fn spi_setup(dacno: u8) {
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unsafe {
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@ -607,6 +608,44 @@ fn dac_cfg_retry(dacno: u8) -> Result<(), &'static str> {
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dac_cfg(dacno)
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}
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fn dac_sysref_cfg(dacno: u8) {
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let mut sync_error: u16 = 0;
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let mut sync_error_last: u16 = 0;
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let mut cphase_min_found: bool = false;
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let mut cphase_min: u8 = 0;
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let mut cphase_max_found: bool = false;
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let mut cphase_max: u8 = 0;
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let mut cphase_opt: u8 = 0;
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info!("AD9154-{} SYSREF scan/conf...", dacno);
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for cphase in 0..32 {
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hmc7043::cfg_dac_sysref(dacno, 0, cphase);
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clock::spin_us(10000);
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spi_setup(dacno);
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sync_error = ((read(ad9154_reg::SYNC_CURRERR_L) as u16) |
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((read(ad9154_reg::SYNC_CURRERR_H) as u16) << 8))
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& 0x1ff;
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info!(" cphase: {}, sync error: {}", cphase, sync_error);
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if sync_error != 0 {
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if cphase_min_found {
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if sync_error != sync_error_last {
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cphase_max_found = true;
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cphase_max = cphase - 1;
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break;
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}
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} else {
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cphase_min_found = true;
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cphase_min = cphase;
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}
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}
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sync_error_last = sync_error;
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}
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cphase_opt = cphase_min + (cphase_max-cphase_min)/2;
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info!(" cphase min: {}, cphase max: {}, cphase opt: {}", cphase_min, cphase_max, cphase_opt);
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hmc7043::cfg_dac_sysref(dacno, 0, cphase_opt);
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}
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pub fn init() -> Result<(), &'static str> {
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// Release the JESD clock domain reset late, as we need to
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// set up clock chips before.
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@ -617,6 +656,7 @@ pub fn init() -> Result<(), &'static str> {
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debug!("setting up AD9154-{} DAC...", dacno);
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dac_cfg_retry(dacno)?;
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dac_prbs(dacno)?;
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dac_sysref_cfg(dacno);
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dac_cfg_retry(dacno)?;
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}
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@ -124,7 +124,7 @@ mod hmc830 {
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}
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}
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mod hmc7043 {
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pub mod hmc7043 {
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use board::csr;
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// To do: check which output channels we actually need
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@ -249,6 +249,20 @@ mod hmc7043 {
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Ok(())
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}
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pub fn cfg_dac_sysref(dacno: u8, aphase: u8, cphase: u8) {
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spi_setup();
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if dacno == 0 {
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write(0x00D5, aphase);
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write(0x00D6, cphase);
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} else if dacno == 1 {
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write(0x00E9, aphase);
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write(0x00EA, cphase);
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} else {
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unimplemented!();
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}
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}
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}
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pub fn init() -> Result<(), &'static str> {
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