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Message-ID: <20240607081855.132741-1-csokas.bence@prolan.hu>
Date: Fri, 7 Jun 2024 10:18:55 +0200
From: Csókás, Bence <csokas.bence@...lan.hu>
To: <imx@...ts.linux.dev>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>
CC: Csókás, Bence <csokas.bence@...lan.hu>, Wei Fang
<wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, Clark Wang
<xiaoning.wang@....com>, "David S. Miller" <davem@...emloft.net>, "Eric
Dumazet" <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
<pabeni@...hat.com>
Subject: [PATCH v2] net: fec: Add ECR bit macros, fix FEC_ECR_EN1588 being cleared on link-down
FEC_ECR_EN1588 bit gets cleared after MAC reset in `fec_stop()`, which
makes all 1588 functionality shut down on link-down. However, some
functionality needs to be retained (e.g. PPS) even without link.
Signed-off-by: "Csókás, Bence" <csokas.bence@...lan.hu>
---
drivers/net/ethernet/freescale/fec_main.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 881ece735dcf..fb19295529a2 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1361,6 +1361,12 @@ fec_stop(struct net_device *ndev)
writel(FEC_ECR_ETHEREN, fep->hwp + FEC_ECNTRL);
writel(rmii_mode, fep->hwp + FEC_R_CNTRL);
}
+
+ if (fep->bufdesc_ex) {
+ val = readl(fep->hwp + FEC_ECNTRL);
+ val |= FEC_ECR_EN1588;
+ writel(val, fep->hwp + FEC_ECNTRL);
+ }
}
static void
--
2.34.1
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