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From 9d32637122de88f1ef614c29703f0e050cad342e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <bjorn@mork.no>
Date: Wed, 1 Feb 2023 19:23:30 +0100
Subject: [PATCH] net: mediatek: sgmii: fix duplex configuration
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The logic of the duplex bit is inverted. Setting it means half
duplex, not full duplex.
Fix and rename macro to avoid confusion.
Fixes: 7e538372694b ("net: ethernet: mediatek: Re-add support SGMII")
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Daniel Golle <daniel@makrotopia.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
drivers/net/ethernet/mediatek/mtk_sgmii.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -523,7 +523,7 @@
#define SGMII_SPEED_10 FIELD_PREP(SGMII_SPEED_MASK, 0)
#define SGMII_SPEED_100 FIELD_PREP(SGMII_SPEED_MASK, 1)
#define SGMII_SPEED_1000 FIELD_PREP(SGMII_SPEED_MASK, 2)
-#define SGMII_DUPLEX_FULL BIT(4)
+#define SGMII_DUPLEX_HALF BIT(4)
#define SGMII_IF_MODE_BIT5 BIT(5)
#define SGMII_REMOTE_FAULT_DIS BIT(8)
#define SGMII_CODE_SYNC_SET_VAL BIT(9)
--- a/drivers/net/ethernet/mediatek/mtk_sgmii.c
+++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c
@@ -66,7 +66,7 @@ static int mtk_pcs_setup_mode_force(stru
/* Set the speed etc but leave the duplex unchanged */
regmap_read(mpcs->regmap, SGMSYS_SGMII_MODE, &val);
- val &= SGMII_DUPLEX_FULL | ~SGMII_IF_MODE_MASK;
+ val &= SGMII_DUPLEX_HALF | ~SGMII_IF_MODE_MASK;
val |= SGMII_SPEED_1000;
regmap_write(mpcs->regmap, SGMSYS_SGMII_MODE, val);
@@ -131,9 +131,10 @@ static void mtk_pcs_link_up(struct phyli
/* SGMII force duplex setting */
regmap_read(mpcs->regmap, SGMSYS_SGMII_MODE, &val);
- val &= ~SGMII_DUPLEX_FULL;
- if (duplex == DUPLEX_FULL)
- val |= SGMII_DUPLEX_FULL;
+
+ val &= ~SGMII_DUPLEX_HALF;
+ if (duplex != DUPLEX_FULL)
+ val |= SGMII_DUPLEX_HALF;
regmap_write(mpcs->regmap, SGMSYS_SGMII_MODE, val);
}
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