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firmware/ad9154: cleanup DAC init 

- Split dac_setup in dac_reset, dat_detect & dac_setup.
- Only do one reset/detection.
- Configure before doing SYSREF scan (otherwise scan don't work at the first scan after power up).
- Do the spi_setup in each function.
This commit is contained in:
Florent Kermarrec 2018-05-24 09:34:00 +02:00
parent fa3b48737b
commit 19e5280824
1 changed files with 24 additions and 7 deletions
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31
artiq/firmware/libboard_artiq/ad9154.rs
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@ -131,7 +131,8 @@ const JESD_SETTINGS: JESDSettings = JESDSettings {
jesdv: 1
};
fn dac_setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
fn dac_reset(dacno: u8) {
spi_setup(dacno);
// reset
write(ad9154_reg::SPI_INTFCONFA,
1*ad9154_reg::SOFTRESET_M | 1*ad9154_reg::SOFTRESET |
@ -145,12 +146,20 @@ fn dac_setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
0*ad9154_reg::ADDRINC_M | 0*ad9154_reg::ADDRINC |
1*ad9154_reg::SDOACTIVE_M | 1*ad9154_reg::SDOACTIVE);
clock::spin_us(100);
}
fn dac_detect(dacno: u8) -> Result<(), &'static str> {
spi_setup(dacno);
if (read(ad9154_reg::PRODIDH) as u16) << 8 | (read(ad9154_reg::PRODIDL) as u16) != 0x9154 {
return Err("invalid AD9154 identification");
} else {
info!("AD9154-{} found", dacno);
}
Ok(())
}
fn dac_setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
spi_setup(dacno);
info!("AD9154-{} initializing...", dacno);
write(ad9154_reg::PWRCNTRL0,
0*ad9154_reg::PD_DAC0 | 0*ad9154_reg::PD_DAC1 |
@ -336,7 +345,7 @@ fn dac_setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
0x5*ad9154_reg::SPI_CP_LEVEL_THRESHOLD_LOW |
0*ad9154_reg::SPI_CP_LEVEL_DET_PD);
write(ad9154_reg::VCO_VARACTOR_CTRL_0,
0xe*ad9154_reg::SPI_VCO_VARACTOR_OFFSET |
0xe*ad9154_reg::SPI_VCO_VARACTOR_OFFSET |
0x7*ad9154_reg::SPI_VCO_VARACTOR_REF_TCF);
write(ad9154_reg::VCO_VARACTOR_CTRL_1,
0x6*ad9154_reg::SPI_VCO_VARACTOR_REF);
@ -400,7 +409,8 @@ fn dac_setup(dacno: u8, linerate: u64) -> Result<(), &'static str> {
}
#[allow(dead_code)]
fn dac_status() {
fn dac_status(dacno: u8) {
spi_setup(dacno);
info!("SERDES_PLL_LOCK: {}",
(read(ad9154_reg::PLL_STATUS) & ad9154_reg::SERDES_PLL_LOCK_RB));
info!("");
@ -452,7 +462,8 @@ fn dac_status() {
info!("NITDISPARITY: 0x{:02x}", read(ad9154_reg::NIT_W));
}
fn dac_monitor() {
fn dac_monitor(dacno: u8) {
spi_setup(dacno);
write(ad9154_reg::IRQ_STATUS0, 0x00);
write(ad9154_reg::IRQ_STATUS1, 0x00);
write(ad9154_reg::IRQ_STATUS2, 0x00);
@ -497,6 +508,7 @@ fn dac_monitor() {
fn dac_prbs(dacno: u8) -> Result<(), &'static str> {
let mut prbs_errors: u32 = 0;
spi_setup(dacno);
/* follow phy prbs testing (p58 of ad9154 datasheet) */
info!("AD9154-{} running PRBS test...", dacno);
@ -572,7 +584,7 @@ fn dac_cfg(dacno: u8) -> Result<(), &'static str> {
jesd_enable(dacno, false);
clock::spin_us(10000);
jesd_enable(dacno, true);
dac_monitor();
dac_monitor(dacno);
clock::spin_us(50000);
let t = clock::get_ms();
while !jesd_ready(dacno) {
@ -654,10 +666,15 @@ pub fn init() -> Result<(), &'static str> {
for dacno in 0..csr::AD9154.len() {
let dacno = dacno as u8;
dac_sysref_scan(dacno);
dac_sysref_cfg(dacno, 88);
// Reset the DAC, detect and configure it
dac_reset(dacno);
dac_detect(dacno)?;
dac_cfg_retry(dacno)?;
// Run the PRBS and SYSREF scan tests
dac_prbs(dacno)?;
dac_sysref_scan(dacno);
// Set SYSREF phase and reconfigure the DAC
dac_sysref_cfg(dacno, 88);
dac_cfg_retry(dacno)?;
}