commit fe52954202e5784556df1efce577f014170e1b58
author J. Neuschäfer <j.ne@posteo.net> Fri Dec 20 11:37:51 2024 +0100
committer Tom Rini <trini@konsulko.com> Mon Dec 30 15:55:27 2024 -0600
tree 8eaf57e9a28c65cf63cda794e2745f1ffcdbe0e8
parent 08224d322442d2024a0decd6cbd2e4e2e2369732

powerpc: mpc83xx: Fix timer value calculation

TBU and TBL are specified as two 32-bit registers that form a 64-bit
value, but the calculation only shifted TBU by 16 bits.

Fix this by actually shifting 32 bits.

Reviewed-by: Sinan Akman <sinan@writeme.com>
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>

drivers/timer/mpc83xx_timer.c

diff --git a/drivers/timer/mpc83xx_timer.c b/drivers/timer/mpc83xx_timer.c
index 9da7447..f92009e 100644
--- a/drivers/timer/mpc83xx_timer.c
+++ b/drivers/timer/mpc83xx_timer.c
@@ -206,7 +206,7 @@
 		tbl = mftb();
 	} while (tbu != mftbu());
 
-	return (tbu * 0x10000ULL) + tbl;
+	return (uint64_t)tbu << 32 | tbl;
 }
 
 static int mpc83xx_timer_probe(struct udevice *dev)