FEAT: add phy driver for yt8511

.pc/0001-am335x_evm_defconfig-turn-off-MUSB-DMA.patch/arch/arm/configs/am335x_evm_defconfig

@@ -1066,6 +1066,7 @@ CONFIG_PHYLIB=y
 # CONFIG_VITESSE_PHY is not set
 CONFIG_SMSC_PHY=y
 CONFIG_AT803X_PHY=y
+CONFIG_MOTORCOMM_PHY=y
 # CONFIG_BROADCOM_PHY is not set
 # CONFIG_ICPLUS_PHY is not set
 # CONFIG_REALTEK_PHY is not set

arch/arm/configs/myd_am335x_defconfig

@@ -1081,6 +1081,7 @@ CONFIG_PHYLIB=y
 # CONFIG_VITESSE_PHY is not set
 CONFIG_SMSC_PHY=y
 CONFIG_AT803X_PHY=y
+CONFIG_MOTORCOMM_PHY=y
 # CONFIG_BROADCOM_PHY is not set
 # CONFIG_ICPLUS_PHY is not set
 # CONFIG_REALTEK_PHY is not set

drivers/net/phy/Kconfig

@@ -97,6 +97,21 @@ config MICREL_PHY
 	---help---
 	  Supports the KSZ9021, VSC8201, KS8001 PHYs.
 
+config DP83848_PHY
+	tristate "Driver for Texas Instruments DP83848 PHY"
+	---help---
+	  Supports the DP83848 PHY.
+
+config DP83867_PHY
+	tristate "Drivers for Texas Instruments DP83867 Gigabit PHY"
+	---help---
+	  Currently supports the DP83867 PHY.
+
+config MOTORCOMM_PHY
+        tristate "Motorcomm PHYs"
+        ---help---
+          Supports the YT8511 PHYs.
+
 config FIXED_PHY
 	bool "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
 	depends on PHYLIB=y

drivers/net/phy/Makefile

@@ -20,7 +20,10 @@ obj-$(CONFIG_MDIO_BITBANG)	+= mdio-bitbang.o
 obj-$(CONFIG_MDIO_GPIO)		+= mdio-gpio.o
 obj-$(CONFIG_NATIONAL_PHY)	+= national.o
 obj-$(CONFIG_DP83640_PHY)	+= dp83640.o
+obj-$(CONFIG_DP83848_PHY)	+= dp83848.o
+obj-$(CONFIG_DP83867_PHY)	+= dp83867.o
 obj-$(CONFIG_STE10XP)		+= ste10Xp.o
 obj-$(CONFIG_MICREL_PHY)	+= micrel.o
 obj-$(CONFIG_MDIO_OCTEON)	+= mdio-octeon.o
 obj-$(CONFIG_AT803X_PHY)	+= at803x.o
+obj-$(CONFIG_MOTORCOMM_PHY)     += motorcomm.o

drivers/net/phy/motorcomm.c

@@ -0,0 +1,168 @@
+/*
+ * drivers/net/phy/motorcomm.c
+ *
+ * Driver for Motorcomm PHYs
+ *
+ * Author: Leilei Zhao <leilei.zhao@motorcomm.com>
+ *
+ * Copyright (c) 2019 Motorcomm, Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ *
+ * Support : Motorcomm Phys:
+ *		Giga phys: yt8511, yt8521
+ *		100/10 Phys : yt8512, yt8512b, yt8510
+ *		Automotive 100Mb Phys : yt8010
+ *		Automotive 100/10 hyper range Phys: yt8510
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/motorcomm_phy.h>
+#include <linux/of.h>
+#include <linux/clk.h>
+#include <linux/version.h>
+/*for wol, 20210604*/
+#include <linux/netdevice.h>
+
+#include "yt8614-phy.h"
+
+/**** configuration section begin ***********/
+
+/* if system depends on ethernet packet to restore from sleep, please define this macro to 1
+ * otherwise, define it to 0.
+ */
+#define SYS_WAKEUP_BASED_ON_ETH_PKT 	0
+
+/* to enable system WOL of phy, please define this macro to 1
+ * otherwise, define it to 0.
+ */
+#define YTPHY_ENABLE_WOL 		0
+
+/* some GMAC need clock input from PHY, for eg., 125M, please enable this macro
+ * by degault, it is set to 0
+ * NOTE: this macro will need macro SYS_WAKEUP_BASED_ON_ETH_PKT to set to 1
+ */
+#define GMAC_CLOCK_INPUT_NEEDED 0
+
+
+#define YT8521_PHY_MODE_FIBER	1 //fiber mode only
+#define YT8521_PHY_MODE_UTP		2 //utp mode only
+#define YT8521_PHY_MODE_POLL	3 //fiber and utp, poll mode
+
+/* please make choice according to system design
+ * for Fiber only system, please define YT8521_PHY_MODE_CURR 1
+ * for UTP only system, please define YT8521_PHY_MODE_CURR 2
+ * for combo system, please define YT8521_PHY_MODE_CURR 3 
+ */
+#define YT8521_PHY_MODE_CURR	3
+
+/**** configuration section end ***********/
+
+
+/* no need to change below */
+
+#if (YTPHY_ENABLE_WOL)
+#undef SYS_WAKEUP_BASED_ON_ETH_PKT
+#define SYS_WAKEUP_BASED_ON_ETH_PKT 	1
+#endif
+
+static int ytphy_read_ext(struct phy_device *phydev, u32 regnum)
+{
+	int ret;
+	int val;
+
+	ret = phy_write(phydev, REG_DEBUG_ADDR_OFFSET, regnum);
+	if (ret < 0)
+		return ret;
+
+	val = phy_read(phydev, REG_DEBUG_DATA);
+
+	return val;
+}
+
+static int ytphy_write_ext(struct phy_device *phydev, u32 regnum, u16 val)
+{
+	int ret;
+
+	ret = phy_write(phydev, REG_DEBUG_ADDR_OFFSET, regnum);
+	if (ret < 0)
+		return ret;
+
+	ret = phy_write(phydev, REG_DEBUG_DATA, val);
+
+	return ret;
+}
+
+static int yt8511_config_init(struct phy_device *phydev)
+{
+	int ret;
+	int val;
+
+	ret = genphy_config_init(phydev);
+	if(ret < 0){
+		return ret;
+	}
+
+//	if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
+
+	    /* disable auto sleep */
+	    val = ytphy_read_ext(phydev, 0x27);
+	    val &= (~BIT(15));
+
+	    ret = ytphy_write_ext(phydev, 0x27, val);
+
+	    /* enable RXC clock when no wire plug */
+	    val = ytphy_read_ext(phydev, 0xc);
+
+	    /* ext reg 0xc b[7:4]
+		Tx Delay time = 150ps * N - 250ps
+	    */
+	    val |= (0xf << 4);
+	    val |= 0x1;
+	    ret = ytphy_write_ext(phydev, 0xc, val);
+//	    printk("yt8511_config_en_txdelay..phy txdelay, val=%#08x\n",val);
+//	}
+	return ret;
+}
+static struct phy_driver ytphy_drvs[] = {
+ {
+		.phy_id		= PHY_ID_YT8511,
+		.name		= "YT8511 Gigabit Ethernet",
+		.phy_id_mask	= MOTORCOMM_PHY_ID_MASK,
+		.features	= PHY_GBIT_FEATURES,
+		.flags			= PHY_HAS_INTERRUPT,
+		.config_aneg	= genphy_config_aneg,
+		.config_init	= yt8511_config_init,
+		.read_status	= genphy_read_status,
+		.suspend	= genphy_suspend,
+		.resume		= genphy_resume,
+	}
+};
+
+module_phy_driver(ytphy_drvs);
+
+MODULE_DESCRIPTION("Motorcomm PHY driver");
+MODULE_AUTHOR("Leilei Zhao");
+MODULE_LICENSE("GPL");
+
+static struct mdio_device_id __maybe_unused motorcomm_tbl[] = {
+	{ PHY_ID_YT8010, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8510, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8511, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8512, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8512B, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8521, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8531S, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8531, MOTORCOMM_PHY_ID_MASK },
+	{ PHY_ID_YT8618, MOTORCOMM_MPHY_ID_MASK },
+	{ PHY_ID_YT8614, MOTORCOMM_MPHY_ID_MASK_8614 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, motorcomm_tbl);
+