From: Sean Anderson <[email protected]> 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 ] Signed-off-by: Sean Anderson <[email protected]> --- drivers/phy/phy-zynqmp.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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; -- 2.35.1.1320.gc452695387.dirty
