linux-kernel - [PATCH net v3 1/3] net: dsa: rzn1-a5psw: enable management frames for CPU port

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Message-Id: <20230512072712.82694-2-alexis.lothore@bootlin.com>
Date:   Fri, 12 May 2023 09:27:10 +0200
From:   alexis.lothore@...tlin.com
To:     andrew@...n.ch, f.fainelli@...il.com, olteanv@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com
Cc:     linux-renesas-soc@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
        herve.codina@...tlin.com, miquel.raynal@...tlin.com,
        milan.stevanovic@...com, jimmy.lalande@...com,
        pascal.eberhard@...com
Subject: [PATCH net v3 1/3] net: dsa: rzn1-a5psw: enable management frames for CPU port

From: Clément Léger <clement.leger@...tlin.com>

Currently, management frame were discarded before reaching the CPU port due
to a misconfiguration of the MGMT_CONFIG register. Enable them by setting
the correct value in this register in order to correctly receive management
frame and handle STP.

Fixes: 888cdb892b61 ("net: dsa: rzn1-a5psw: add Renesas RZ/N1 advanced 5 port switch driver")
Signed-off-by: Clément Léger <clement.leger@...tlin.com>
Signed-off-by: Alexis Lothoré <alexis.lothore@...tlin.com>
---
Changes since v2:
- move A5PSW_MGMT_CFG_ENABLE definition in this commit
---
 drivers/net/dsa/rzn1_a5psw.c | 2 +-
 drivers/net/dsa/rzn1_a5psw.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/dsa/rzn1_a5psw.c b/drivers/net/dsa/rzn1_a5psw.c
index 919027cf2012..8a419e2ffe2a 100644
--- a/drivers/net/dsa/rzn1_a5psw.c
+++ b/drivers/net/dsa/rzn1_a5psw.c
@@ -673,7 +673,7 @@ static int a5psw_setup(struct dsa_switch *ds)
 	}
 
 	/* Configure management port */
-	reg = A5PSW_CPU_PORT | A5PSW_MGMT_CFG_DISCARD;
+	reg = A5PSW_CPU_PORT | A5PSW_MGMT_CFG_ENABLE;
 	a5psw_reg_writel(a5psw, A5PSW_MGMT_CFG, reg);
 
 	/* Set pattern 0 to forward all frame to mgmt port */
diff --git a/drivers/net/dsa/rzn1_a5psw.h b/drivers/net/dsa/rzn1_a5psw.h
index c67abd49c013..b4fbf453ff74 100644
--- a/drivers/net/dsa/rzn1_a5psw.h
+++ b/drivers/net/dsa/rzn1_a5psw.h
@@ -36,7 +36,7 @@
 #define A5PSW_INPUT_LEARN_BLOCK(p)	BIT(p)
 
 #define A5PSW_MGMT_CFG			0x20
-#define A5PSW_MGMT_CFG_DISCARD		BIT(7)
+#define A5PSW_MGMT_CFG_ENABLE		BIT(6)
 
 #define A5PSW_MODE_CFG			0x24
 #define A5PSW_MODE_STATS_RESET		BIT(31)
-- 
2.40.1