linux-kernel - [PATCH 1/3] phy: ti: phy-gmii-sel: Add support for SGMII mode

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Date:   Thu, 9 Mar 2023 11:52:35 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     <vkoul@...nel.org>, <kishon@...nel.org>, <rogerq@...nel.org>
CC:     <linux-phy@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH 1/3] phy: ti: phy-gmii-sel: Add support for SGMII mode

Add support to configure the CPSW MAC's PHY in SGMII mode if the SoC
supports it. The extra_modes member of the phy_gmii_sel_soc_data struct
corresponding to the SoC is used to determine whether or not the SoC
supports SGMII mode.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
 drivers/phy/ti/phy-gmii-sel.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index 8c667819c39a..351173aeb0a6 100644
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -23,6 +23,7 @@
 #define AM33XX_GMII_SEL_MODE_RGMII	2
 
 /* J72xx SoC specific definitions for the CONTROL port */
+#define J72XX_GMII_SEL_MODE_SGMII	3
 #define J72XX_GMII_SEL_MODE_QSGMII	4
 #define J72XX_GMII_SEL_MODE_QSGMII_SUB	6
 
@@ -106,6 +107,11 @@ static int phy_gmii_sel_mode(struct phy *phy, enum phy_mode mode, int submode)
 			gmii_sel_mode = J72XX_GMII_SEL_MODE_QSGMII_SUB;
 		break;
 
+	case PHY_INTERFACE_MODE_SGMII:
+		if (!(soc_data->extra_modes & BIT(PHY_INTERFACE_MODE_SGMII)))
+			goto unsupported;
+		else
+			gmii_sel_mode = J72XX_GMII_SEL_MODE_SGMII;
 	default:
 		goto unsupported;
 	}
-- 
2.25.1