From 45dea13179811dfa740f4448bd24b5020cb3a6f7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@kernel.org>
Date: Thu, 4 Nov 2021 18:17:47 +0100
Subject: [PATCH] net: dsa: mv88e6xxx: Don't support >1G speeds on 6191X on ports other than 10
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Git-commit: dc2fc9f03c5c410d8f01c2206b3d529f80b13733
Patch-mainline: v5.16-rc1
References: stable-5.14.19

[ Upstream commit dc2fc9f03c5c410d8f01c2206b3d529f80b13733 ]

Model 88E6191X only supports >1G speeds on port 10. Port 0 and 9 are
only 1G.

Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
Signed-off-by: Marek Behún <kabel@kernel.org>
Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20211104171747.10509-1-kabel@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/dsa/mv88e6xxx/chip.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index f5b2e5e87da4..55fe83b88737 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -639,7 +639,10 @@ static void mv88e6393x_phylink_validate(struct mv88e6xxx_chip *chip, int port,
 					unsigned long *mask,
 					struct phylink_link_state *state)
 {
-	if (port == 0 || port == 9 || port == 10) {
+	bool is_6191x =
+		chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6191X;
+
+	if (((port == 0 || port == 9) && !is_6191x) || port == 10) {
 		phylink_set(mask, 10000baseT_Full);
 		phylink_set(mask, 10000baseKR_Full);
 		phylink_set(mask, 10000baseCR_Full);
-- 
2.26.2