netdev - [PATCH net-next v4 1/5] net: phy: add registers to support 1000BASE-T1

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Message-Id: <20230719064258.9746-2-eichest@gmail.com>
Date: Wed, 19 Jul 2023 08:42:54 +0200
From: Stefan Eichenberger <eichest@...il.com>
To: netdev@...r.kernel.org,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk,
	francesco.dolcini@...adex.com,
	kabel@...nel.org
Cc: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	eichest@...il.com
Subject: [PATCH net-next v4 1/5] net: phy: add registers to support 1000BASE-T1

Add registers and definitions to support 1000BASE-T1. This includes the
PCS Control and Status registers (3.2304 and 3.2305) as well as some
missing bits on the PMA/PMD extended ability register (1.18) and PMA/PMD
CTRL (1.2100) register.

Signed-off-by: Stefan Eichenberger <eichest@...il.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
---
 include/uapi/linux/mdio.h | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/mdio.h b/include/uapi/linux/mdio.h
index b826598d1e94c..d03863da180e7 100644
--- a/include/uapi/linux/mdio.h
+++ b/include/uapi/linux/mdio.h
@@ -82,6 +82,8 @@
 #define MDIO_AN_10BT1_AN_CTRL	526	/* 10BASE-T1 AN control register */
 #define MDIO_AN_10BT1_AN_STAT	527	/* 10BASE-T1 AN status register */
 #define MDIO_PMA_PMD_BT1_CTRL	2100	/* BASE-T1 PMA/PMD control register */
+#define MDIO_PCS_1000BT1_CTRL	2304	/* 1000BASE-T1 PCS control register */
+#define MDIO_PCS_1000BT1_STAT	2305	/* 1000BASE-T1 PCS status register */
 
 /* LASI (Link Alarm Status Interrupt) registers, defined by XENPAK MSA. */
 #define MDIO_PMA_LASI_RXCTRL	0x9000	/* RX_ALARM control */
@@ -332,6 +334,8 @@
 #define MDIO_PCS_10T1L_CTRL_RESET	0x8000	/* PCS reset */
 
 /* BASE-T1 PMA/PMD extended ability register. */
+#define MDIO_PMA_PMD_BT1_B100_ABLE	0x0001	/* 100BASE-T1 Ability */
+#define MDIO_PMA_PMD_BT1_B1000_ABLE	0x0002	/* 1000BASE-T1 Ability */
 #define MDIO_PMA_PMD_BT1_B10L_ABLE	0x0004	/* 10BASE-T1L Ability */
 
 /* BASE-T1 auto-negotiation advertisement register [15:0] */
@@ -373,7 +377,19 @@
 #define MDIO_AN_10BT1_AN_STAT_LPA_EEE_T1L	0x4000 /* 10BASE-T1L LP EEE ability advertisement */
 
 /* BASE-T1 PMA/PMD control register */
-#define MDIO_PMA_PMD_BT1_CTRL_CFG_MST	0x4000 /* MASTER-SLAVE config value */
+#define MDIO_PMA_PMD_BT1_CTRL_STRAP		0x000F /* Type selection (Strap) */
+#define MDIO_PMA_PMD_BT1_CTRL_STRAP_B1000	0x0001 /* Select 1000BASE-T1 */
+#define MDIO_PMA_PMD_BT1_CTRL_CFG_MST		0x4000 /* MASTER-SLAVE config value */
+
+/* 1000BASE-T1 PCS control register */
+#define MDIO_PCS_1000BT1_CTRL_LOW_POWER		0x0800 /* Low power mode */
+#define MDIO_PCS_1000BT1_CTRL_DISABLE_TX	0x4000 /* Global PMA transmit disable */
+#define MDIO_PCS_1000BT1_CTRL_RESET		0x8000 /* Software reset value */
+
+/* 1000BASE-T1 PCS status register */
+#define MDIO_PCS_1000BT1_STAT_LINK	0x0004 /* PCS Link is up */
+#define MDIO_PCS_1000BT1_STAT_FAULT	0x0080 /* There is a fault condition */
+
 
 /* EEE Supported/Advertisement/LP Advertisement registers.
  *
-- 
2.39.2