netdev - [PATCH net] atl1c: improve reliability of mdio ops on Mikrotik 10/25G NIC

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Date:   Thu, 17 Jun 2021 15:25:53 +0300
From:   Gatis Peisenieks <gatis@...rotik.com>
To:     chris.snook@...il.com, davem@...emloft.net, kuba@...nel.org,
        hkallweit1@...il.com, jesse.brandeburg@...el.com,
        dchickles@...vell.com, tully@...rotik.com, eric.dumazet@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Gatis Peisenieks <gatis@...rotik.com>
Subject: [PATCH net] atl1c: improve reliability of mdio ops on Mikrotik 10/25G NIC

MDIO ops on Mikrotik 10/25G NIC can occasionally take longer
to complete. This increases the timeout from 1.2 to 12ms.

Signed-off-by: Gatis Peisenieks <gatis@...rotik.com>
---
 drivers/net/ethernet/atheros/atl1c/atl1c_hw.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
index c567c920628f..15523077490f 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_hw.h
@@ -290,7 +290,7 @@ void atl1c_post_phy_linkchg(struct atl1c_hw *hw, u16 link_speed);
 #define MDIO_CTRL_REG_SHIFT		16
 #define MDIO_CTRL_DATA_MASK		0xFFFFUL
 #define MDIO_CTRL_DATA_SHIFT		0
-#define MDIO_MAX_AC_TO			120	/* 1.2ms timeout for slow clk */
+#define MDIO_MAX_AC_TO			1200	/* 12ms timeout for slow clk */
 
 /* for extension reg access */
 #define REG_MDIO_EXTN			0x1448
-- 
2.31.1