[PATCH 3/4] arcnet: com20020: Fixup missing SLOWARB bit
From: Andrea Greco <hidden>
Date: 2018-05-17 13:07:34
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lkml
Subsystem:
arcnet network layer, networking drivers, the rest · Maintainers:
Michael Grzeschik, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Andrea Greco <redacted> If com20020 clock is major of 40Mhz SLOWARB bit is requested. Signed-off-by: Andrea Greco <redacted> --- drivers/net/arcnet/com20020.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/arcnet/com20020.c b/drivers/net/arcnet/com20020.c
index 2fd00d2dd6bf..f1de02f05305 100644
--- a/drivers/net/arcnet/com20020.c
+++ b/drivers/net/arcnet/com20020.c@@ -102,6 +102,10 @@ int com20020_check(struct net_device *dev) lp->setup = lp->clockm ? 0 : (lp->clockp << 1); lp->setup2 = (lp->clockm << 4) | 8; + /* If clock is major of 40Mhz, SLOWARB bit must be set */ + if (lp->clockm > 1) + lp->setup2 |= SLOWARB; + /* CHECK: should we do this for SOHARD cards ? */ /* Enable P1Mode for backplane mode */ lp->setup = lp->setup | P1MODE;
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2.14.3