Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ae5f8c19 authored by Joakim Tjernlund's avatar Joakim Tjernlund Committed by Kumar Gala
Browse files

powerpc/qe: Fixup QE_General4 errata 



QE_General4 should only round up the divisor iff divisor is > 3.
Rounding up lower divisors makes the error too big, causing USB
on MPC832x to fail.

Signed-off-by: default avatarJoakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: default avatarTimur Tabi <timur@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent 05011f37

arch/powerpc/sysdev/qe_lib/qe.c

+1 −1
Original line number Diff line number Diff line
@@ -216,7 +216,7 @@ int qe_setbrg(enum qe_clock brg, unsigned int rate, unsigned int multiplier) 
	/* Errata QE_General4, which affects some MPC832x and MPC836x SOCs, says

	   that the BRG divisor must be even if you're not using divide-by-16

	   mode. */

	if (!div16 && (divisor & 1))

	if (!div16 && (divisor & 1) && (divisor > 3))

		divisor++;



	tempval = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) |