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From: Andrew Davis <afd@ti.com>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Siddharth Vadapalli <s-vadapalli@ti.com>,
	Roger Quadros <rogerq@kernel.org>
Cc: <linux-phy@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	Andrew Davis <afd@ti.com>
Subject: [PATCH] phy: ti: gmii-sel: Fix register offset when parent is not a syscon node
Date: Wed, 25 Oct 2023 09:33:02 -0500	[thread overview]
Message-ID: <20231025143302.1265633-1-afd@ti.com> (raw)

When the node for this phy selector is a child node of a syscon node then the
property 'reg' is used as an offset into the parent regmap. When the node
is standalone and gets its own regmap this offset is pre-applied. So we need
to track which method was used to get the regmap and not apply the offset
in the standalone case.

Fixes: 1fdfa7cccd35 ("phy: ti: gmii-sel: Allow parent to not be syscon node")
Signed-off-by: Andrew Davis <afd@ti.com>
---
 drivers/phy/ti/phy-gmii-sel.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index 555b323f45da1..bc847d3879f79 100644
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -64,6 +64,7 @@ struct phy_gmii_sel_priv {
 	u32 num_ports;
 	u32 reg_offset;
 	u32 qsgmii_main_ports;
+	bool no_offset;
 };
 
 static int phy_gmii_sel_mode(struct phy *phy, enum phy_mode mode, int submode)
@@ -402,7 +403,8 @@ static int phy_gmii_sel_init_ports(struct phy_gmii_sel_priv *priv)
 		priv->num_ports = size / sizeof(u32);
 		if (!priv->num_ports)
 			return -EINVAL;
-		priv->reg_offset = __be32_to_cpu(*offset);
+		if (!priv->no_offset)
+			priv->reg_offset = __be32_to_cpu(*offset);
 	}
 
 	if_phys = devm_kcalloc(dev, priv->num_ports,
@@ -471,6 +473,7 @@ static int phy_gmii_sel_probe(struct platform_device *pdev)
 			dev_err(dev, "Failed to get syscon %d\n", ret);
 			return ret;
 		}
+		priv->no_offset = true;
 	}
 
 	ret = phy_gmii_sel_init_ports(priv);
-- 
2.39.2


WARNING: multiple messages have this Message-ID (diff)
From: Andrew Davis <afd@ti.com>
To: Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Siddharth Vadapalli <s-vadapalli@ti.com>,
	Roger Quadros <rogerq@kernel.org>
Cc: <linux-phy@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	Andrew Davis <afd@ti.com>
Subject: [PATCH] phy: ti: gmii-sel: Fix register offset when parent is not a syscon node
Date: Wed, 25 Oct 2023 09:33:02 -0500	[thread overview]
Message-ID: <20231025143302.1265633-1-afd@ti.com> (raw)

When the node for this phy selector is a child node of a syscon node then the
property 'reg' is used as an offset into the parent regmap. When the node
is standalone and gets its own regmap this offset is pre-applied. So we need
to track which method was used to get the regmap and not apply the offset
in the standalone case.

Fixes: 1fdfa7cccd35 ("phy: ti: gmii-sel: Allow parent to not be syscon node")
Signed-off-by: Andrew Davis <afd@ti.com>
---
 drivers/phy/ti/phy-gmii-sel.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index 555b323f45da1..bc847d3879f79 100644
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -64,6 +64,7 @@ struct phy_gmii_sel_priv {
 	u32 num_ports;
 	u32 reg_offset;
 	u32 qsgmii_main_ports;
+	bool no_offset;
 };
 
 static int phy_gmii_sel_mode(struct phy *phy, enum phy_mode mode, int submode)
@@ -402,7 +403,8 @@ static int phy_gmii_sel_init_ports(struct phy_gmii_sel_priv *priv)
 		priv->num_ports = size / sizeof(u32);
 		if (!priv->num_ports)
 			return -EINVAL;
-		priv->reg_offset = __be32_to_cpu(*offset);
+		if (!priv->no_offset)
+			priv->reg_offset = __be32_to_cpu(*offset);
 	}
 
 	if_phys = devm_kcalloc(dev, priv->num_ports,
@@ -471,6 +473,7 @@ static int phy_gmii_sel_probe(struct platform_device *pdev)
 			dev_err(dev, "Failed to get syscon %d\n", ret);
 			return ret;
 		}
+		priv->no_offset = true;
 	}
 
 	ret = phy_gmii_sel_init_ports(priv);
-- 
2.39.2


-- 
linux-phy mailing list
linux-phy@lists.infradead.org
https://lists.infradead.org/mailman/listinfo/linux-phy

             reply	other threads:[~2023-10-25 14:33 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-25 14:33 Andrew Davis [this message]
2023-10-25 14:33 ` [PATCH] phy: ti: gmii-sel: Fix register offset when parent is not a syscon node Andrew Davis
2023-10-26 11:56 ` Roger Quadros
2023-10-26 11:56   ` Roger Quadros
2023-11-16 15:00 ` Vinod Koul
2023-11-16 15:00   ` Vinod Koul

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