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si5324: fix usage of external CLKIN2 reference

This commit is contained in:
Sebastien Bourdeauducq 2018-02-17 13:52:01 +08:00
parent 07a31f8d86
commit cfb21ca126
4 changed files with 14 additions and 8 deletions
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5
artiq/firmware/libboard_artiq/si5324.rs
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@ -43,7 +43,8 @@ pub struct FrequencySettings {
pub n2_ls: u32, pub n2_ls: u32,
pub n31: u32, pub n31: u32,
pub n32: u32, pub n32: u32,
pub bwsel: u8 pub bwsel: u8,
pub crystal_ref: bool
} }
fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySettings> { fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySettings> {
@ -201,7 +202,9 @@ pub fn setup(settings: &FrequencySettings) -> Result<()> {
#[cfg(si5324_soft_reset)] #[cfg(si5324_soft_reset)]
soft_reset()?; soft_reset()?;
if settings.crystal_ref {
write(0, read(0)? | 0x40)?; // FREE_RUN=1 write(0, read(0)? | 0x40)?; // FREE_RUN=1
}
write(2, (read(2)? & 0x0f) | (s.bwsel << 4))?; write(2, (read(2)? & 0x0f) | (s.bwsel << 4))?;
write(21, read(21)? & 0xfe)?; // CKSEL_PIN=0 write(21, read(21)? & 0xfe)?; // CKSEL_PIN=0
write(3, (read(3)? & 0x3f) | (0b01 << 6) | 0x10)?; // CKSEL_REG=b01 SQ_ICAL=1 write(3, (read(3)? & 0x3f) | (0b01 << 6) | 0x10)?; // CKSEL_REG=b01 SQ_ICAL=1

10
artiq/firmware/runtime/main.rs
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@ -111,7 +111,6 @@ fn startup() {
fn setup_si5324_free_running() fn setup_si5324_free_running()
{ {
// 125MHz output, from 100MHz CLKIN2 reference, 9 Hz // 125MHz output, from 100MHz CLKIN2 reference, 9 Hz
// FIXME: needs !FREE_RUN at address 0x00
#[cfg(all(rtio_frequency = "125.0", si5324_ext_ref))] #[cfg(all(rtio_frequency = "125.0", si5324_ext_ref))]
const SI5324_SETTINGS: board_artiq::si5324::FrequencySettings const SI5324_SETTINGS: board_artiq::si5324::FrequencySettings
= board_artiq::si5324::FrequencySettings { = board_artiq::si5324::FrequencySettings {
@ -121,7 +120,8 @@ fn setup_si5324_free_running()
n2_ls : 260, n2_ls : 260,
n31 : 65, n31 : 65,
n32 : 52, n32 : 52,
bwsel : 10 bwsel : 10,
crystal_ref: false
}; };
// 125MHz output, from crystal, 7 Hz // 125MHz output, from crystal, 7 Hz
#[cfg(all(rtio_frequency = "125.0", not(si5324_ext_ref)))] #[cfg(all(rtio_frequency = "125.0", not(si5324_ext_ref)))]
@ -133,7 +133,8 @@ fn setup_si5324_free_running()
n2_ls : 19972, n2_ls : 19972,
n31 : 4993, n31 : 4993,
n32 : 4565, n32 : 4565,
bwsel : 4 bwsel : 4,
crystal_ref: true
}; };
// 150MHz output, from crystal // 150MHz output, from crystal
#[cfg(all(rtio_frequency = "150.0", not(si5324_ext_ref)))] #[cfg(all(rtio_frequency = "150.0", not(si5324_ext_ref)))]
@ -145,7 +146,8 @@ fn setup_si5324_free_running()
n2_ls : 33732, n2_ls : 33732,
n31 : 9370, n31 : 9370,
n32 : 7139, n32 : 7139,
bwsel : 3 bwsel : 3,
crystal_ref: true
}; };
board_artiq::si5324::setup(&SI5324_SETTINGS).expect("cannot initialize Si5324"); board_artiq::si5324::setup(&SI5324_SETTINGS).expect("cannot initialize Si5324");
} }

3
artiq/firmware/satman/main.rs
View File

@ -183,7 +183,8 @@ const SI5324_SETTINGS: si5324::FrequencySettings
n2_ls : 33732, n2_ls : 33732,
n31 : 9370, n31 : 9370,
n32 : 7139, n32 : 7139,
bwsel : 3 bwsel : 3,
crystal_ref: true
}; };
fn drtio_link_is_up() -> bool { fn drtio_link_is_up() -> bool {

2
artiq/gateware/targets/kasli.py
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@ -230,7 +230,7 @@ class Opticlock(_StandaloneBase):
_StandaloneBase.__init__(self, **kwargs) _StandaloneBase.__init__(self, **kwargs)
self.config["SI5324_FREE_RUNNING"] = None self.config["SI5324_FREE_RUNNING"] = None
# self.config["SI5324_EXT_REF"] = None self.config["SI5324_EXT_REF"] = None
self.config["RTIO_FREQUENCY"] = "125.0" self.config["RTIO_FREQUENCY"] = "125.0"
platform = self.platform platform = self.platform