diff options
| author | Sean Anderson <[email protected]> | 2026-01-06 16:54:58 -0500 |
|---|---|---|
| committer | Michal Simek <[email protected]> | 2026-01-12 13:01:27 +0100 |
| commit | 0320459cbf857f4bc340d3a500a38a57218768d5 (patch) | |
| tree | 929e37c8a4004326f2c71d68c208ca1be1922ab2 /drivers/phy | |
| parent | 4bdaad9dee62439a9e8d7b70fd50e10e4d10d878 (diff) | |
phy: zynqmp: Allow variation in refclk rate
Due to limited available frequency ratios, the reference clock rate may
not be exactly the same as the required rate. Allow a small (100 ppm)
deviation.
Signed-off-by: Sean Anderson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>
[ Linux commit 76009ee76e05e30e29aade02e788aebe9ce9ffd2 ]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Michal Simek <[email protected]>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/phy-zynqmp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/phy/phy-zynqmp.c b/drivers/phy/phy-zynqmp.c index 9649e660220..7151402666b 100644 --- a/drivers/phy/phy-zynqmp.c +++ b/drivers/phy/phy-zynqmp.c @@ -725,7 +725,10 @@ static int xpsgtr_get_ref_clocks(struct udevice *dev) } for (i = 0 ; i < ARRAY_SIZE(ssc_lookup); i++) { - if (rate == ssc_lookup[i].refclk_rate) { + /* Allow an error of 100 ppm */ + unsigned long error = ssc_lookup[i].refclk_rate / 10000; + + if (abs(rate - ssc_lookup[i].refclk_rate) < error) { gtr_dev->refclk_sscs[refclk] = &ssc_lookup[i]; dev_dbg(dev, "Found rate %d\n", i); break; |