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u-boot/drivers/net/fec_mxc.h
Fabio Estevam 89b5bd54c1 net: fec: Allow the PHY node to be retrieved 
As we move towards driver model, it is required to let the FEC driver
know how to properly deal with an Ethernet PHY subnode in the device tree.

For example:

 &fec {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_microsom_enet_ar8035>;
	phy-handle = <&phy>;
 	phy-mode = "rgmii-id";
 	phy-reset-duration = <2>;
 	phy-reset-gpios = <&gpio4 15 GPIO_ACTIVE_LOW>;
 	status = "okay";

	mdio {
		#address-cells = <1>;
		#size-cells = <0>;

		phy: ethernet-phy@0 {
			reg = <0>;
			qca,clk-out-frequency = <125000000>;
		};
	};
 };

Currently the PHY node pointer is incorrectly associated with the
Ethernel controller instead of the PHY node itself.

This causes the PHY properties, such as "qca,clk-out-frequency" in
the example above to not get parsed.

Fix this problem by populating the phy_of_node node.

Suggested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Tom Rini <trini@konsulko.com>
2020-06-22 17:40:49 +02:00

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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2009 Ilya Yanok, Emcraft Systems Ltd <yanok@emcraft.com>
* (C) Copyright 2008 Armadeus Systems, nc
* (C) Copyright 2008 Eric Jarrige <eric.jarrige@armadeus.org>
* (C) Copyright 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
* (C) Copyright 2007 Pengutronix, Juergen Beisert <j.beisert@pengutronix.de>
*
* (C) Copyright 2003
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* This file is based on mpc4200fec.h
* (C) Copyright Motorola, Inc., 2000
*/
#ifndef __FEC_MXC_H
#define __FEC_MXC_H
#include <clk.h>
/* Layout description of the FEC */
struct ethernet_regs {
/* [10:2]addr = 00 */
/* Control and status Registers (offset 000-1FF) */
uint32_t res0[1]; /* MBAR_ETH + 0x000 */
uint32_t ievent; /* MBAR_ETH + 0x004 */
uint32_t imask; /* MBAR_ETH + 0x008 */
uint32_t res1[1]; /* MBAR_ETH + 0x00C */
uint32_t r_des_active; /* MBAR_ETH + 0x010 */
uint32_t x_des_active; /* MBAR_ETH + 0x014 */
uint32_t res2[3]; /* MBAR_ETH + 0x018-20 */
uint32_t ecntrl; /* MBAR_ETH + 0x024 */
uint32_t res3[6]; /* MBAR_ETH + 0x028-03C */
uint32_t mii_data; /* MBAR_ETH + 0x040 */
uint32_t mii_speed; /* MBAR_ETH + 0x044 */
uint32_t res4[7]; /* MBAR_ETH + 0x048-60 */
uint32_t mib_control; /* MBAR_ETH + 0x064 */
uint32_t res5[7]; /* MBAR_ETH + 0x068-80 */
uint32_t r_cntrl; /* MBAR_ETH + 0x084 */
uint32_t res6[15]; /* MBAR_ETH + 0x088-C0 */
uint32_t x_cntrl; /* MBAR_ETH + 0x0C4 */
uint32_t res7[7]; /* MBAR_ETH + 0x0C8-E0 */
uint32_t paddr1; /* MBAR_ETH + 0x0E4 */
uint32_t paddr2; /* MBAR_ETH + 0x0E8 */
uint32_t op_pause; /* MBAR_ETH + 0x0EC */
uint32_t res8[10]; /* MBAR_ETH + 0x0F0-114 */
uint32_t iaddr1; /* MBAR_ETH + 0x118 */
uint32_t iaddr2; /* MBAR_ETH + 0x11C */
uint32_t gaddr1; /* MBAR_ETH + 0x120 */
uint32_t gaddr2; /* MBAR_ETH + 0x124 */
uint32_t res9[7]; /* MBAR_ETH + 0x128-140 */
uint32_t x_wmrk; /* MBAR_ETH + 0x144 */
uint32_t res10[1]; /* MBAR_ETH + 0x148 */
uint32_t r_bound; /* MBAR_ETH + 0x14C */
uint32_t r_fstart; /* MBAR_ETH + 0x150 */
uint32_t res11[11]; /* MBAR_ETH + 0x154-17C */
uint32_t erdsr; /* MBAR_ETH + 0x180 */
uint32_t etdsr; /* MBAR_ETH + 0x184 */
uint32_t emrbr; /* MBAR_ETH + 0x188 */
uint32_t res12[29]; /* MBAR_ETH + 0x18C-1FC */
/* MIB COUNTERS (Offset 200-2FF) */
uint32_t rmon_t_drop; /* MBAR_ETH + 0x200 */
uint32_t rmon_t_packets; /* MBAR_ETH + 0x204 */
uint32_t rmon_t_bc_pkt; /* MBAR_ETH + 0x208 */
uint32_t rmon_t_mc_pkt; /* MBAR_ETH + 0x20C */
uint32_t rmon_t_crc_align; /* MBAR_ETH + 0x210 */
uint32_t rmon_t_undersize; /* MBAR_ETH + 0x214 */
uint32_t rmon_t_oversize; /* MBAR_ETH + 0x218 */
uint32_t rmon_t_frag; /* MBAR_ETH + 0x21C */
uint32_t rmon_t_jab; /* MBAR_ETH + 0x220 */
uint32_t rmon_t_col; /* MBAR_ETH + 0x224 */
uint32_t rmon_t_p64; /* MBAR_ETH + 0x228 */
uint32_t rmon_t_p65to127; /* MBAR_ETH + 0x22C */
uint32_t rmon_t_p128to255; /* MBAR_ETH + 0x230 */
uint32_t rmon_t_p256to511; /* MBAR_ETH + 0x234 */
uint32_t rmon_t_p512to1023; /* MBAR_ETH + 0x238 */
uint32_t rmon_t_p1024to2047; /* MBAR_ETH + 0x23C */
uint32_t rmon_t_p_gte2048; /* MBAR_ETH + 0x240 */
uint32_t rmon_t_octets; /* MBAR_ETH + 0x244 */
uint32_t ieee_t_drop; /* MBAR_ETH + 0x248 */
uint32_t ieee_t_frame_ok; /* MBAR_ETH + 0x24C */
uint32_t ieee_t_1col; /* MBAR_ETH + 0x250 */
uint32_t ieee_t_mcol; /* MBAR_ETH + 0x254 */
uint32_t ieee_t_def; /* MBAR_ETH + 0x258 */
uint32_t ieee_t_lcol; /* MBAR_ETH + 0x25C */
uint32_t ieee_t_excol; /* MBAR_ETH + 0x260 */
uint32_t ieee_t_macerr; /* MBAR_ETH + 0x264 */
uint32_t ieee_t_cserr; /* MBAR_ETH + 0x268 */
uint32_t ieee_t_sqe; /* MBAR_ETH + 0x26C */
uint32_t t_fdxfc; /* MBAR_ETH + 0x270 */
uint32_t ieee_t_octets_ok; /* MBAR_ETH + 0x274 */
uint32_t res13[2]; /* MBAR_ETH + 0x278-27C */
uint32_t rmon_r_drop; /* MBAR_ETH + 0x280 */
uint32_t rmon_r_packets; /* MBAR_ETH + 0x284 */
uint32_t rmon_r_bc_pkt; /* MBAR_ETH + 0x288 */
uint32_t rmon_r_mc_pkt; /* MBAR_ETH + 0x28C */
uint32_t rmon_r_crc_align; /* MBAR_ETH + 0x290 */
uint32_t rmon_r_undersize; /* MBAR_ETH + 0x294 */
uint32_t rmon_r_oversize; /* MBAR_ETH + 0x298 */
uint32_t rmon_r_frag; /* MBAR_ETH + 0x29C */
uint32_t rmon_r_jab; /* MBAR_ETH + 0x2A0 */
uint32_t rmon_r_resvd_0; /* MBAR_ETH + 0x2A4 */
uint32_t rmon_r_p64; /* MBAR_ETH + 0x2A8 */
uint32_t rmon_r_p65to127; /* MBAR_ETH + 0x2AC */
uint32_t rmon_r_p128to255; /* MBAR_ETH + 0x2B0 */
uint32_t rmon_r_p256to511; /* MBAR_ETH + 0x2B4 */
uint32_t rmon_r_p512to1023; /* MBAR_ETH + 0x2B8 */
uint32_t rmon_r_p1024to2047; /* MBAR_ETH + 0x2BC */
uint32_t rmon_r_p_gte2048; /* MBAR_ETH + 0x2C0 */
uint32_t rmon_r_octets; /* MBAR_ETH + 0x2C4 */
uint32_t ieee_r_drop; /* MBAR_ETH + 0x2C8 */
uint32_t ieee_r_frame_ok; /* MBAR_ETH + 0x2CC */
uint32_t ieee_r_crc; /* MBAR_ETH + 0x2D0 */
uint32_t ieee_r_align; /* MBAR_ETH + 0x2D4 */
uint32_t r_macerr; /* MBAR_ETH + 0x2D8 */
uint32_t r_fdxfc; /* MBAR_ETH + 0x2DC */
uint32_t ieee_r_octets_ok; /* MBAR_ETH + 0x2E0 */
uint32_t res14[7]; /* MBAR_ETH + 0x2E4-2FC */
#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
uint16_t miigsk_cfgr; /* MBAR_ETH + 0x300 */
uint16_t res15[3]; /* MBAR_ETH + 0x302-306 */
uint16_t miigsk_enr; /* MBAR_ETH + 0x308 */
uint16_t res16[3]; /* MBAR_ETH + 0x30a-30e */
uint32_t res17[60]; /* MBAR_ETH + 0x300-3FF */
#else
uint32_t res15[64]; /* MBAR_ETH + 0x300-3FF */
#endif
};
#define FEC_IEVENT_HBERR 0x80000000
#define FEC_IEVENT_BABR 0x40000000
#define FEC_IEVENT_BABT 0x20000000
#define FEC_IEVENT_GRA 0x10000000
#define FEC_IEVENT_TXF 0x08000000
#define FEC_IEVENT_TXB 0x04000000
#define FEC_IEVENT_RXF 0x02000000
#define FEC_IEVENT_RXB 0x01000000
#define FEC_IEVENT_MII 0x00800000
#define FEC_IEVENT_EBERR 0x00400000
#define FEC_IEVENT_LC 0x00200000
#define FEC_IEVENT_RL 0x00100000
#define FEC_IEVENT_UN 0x00080000
#define FEC_IMASK_HBERR 0x80000000
#define FEC_IMASK_BABR 0x40000000
#define FEC_IMASKT_BABT 0x20000000
#define FEC_IMASK_GRA 0x10000000
#define FEC_IMASKT_TXF 0x08000000
#define FEC_IMASK_TXB 0x04000000
#define FEC_IMASKT_RXF 0x02000000
#define FEC_IMASK_RXB 0x01000000
#define FEC_IMASK_MII 0x00800000
#define FEC_IMASK_EBERR 0x00400000
#define FEC_IMASK_LC 0x00200000
#define FEC_IMASKT_RL 0x00100000
#define FEC_IMASK_UN 0x00080000
#define FEC_RCNTRL_MAX_FL_SHIFT 16
#define FEC_RCNTRL_LOOP 0x00000001
#define FEC_RCNTRL_DRT 0x00000002
#define FEC_RCNTRL_MII_MODE 0x00000004
#define FEC_RCNTRL_PROM 0x00000008
#define FEC_RCNTRL_BC_REJ 0x00000010
#define FEC_RCNTRL_FCE 0x00000020
#define FEC_RCNTRL_RGMII 0x00000040
#define FEC_RCNTRL_RMII 0x00000100
#define FEC_RCNTRL_RMII_10T 0x00000200
#define FEC_TCNTRL_GTS 0x00000001
#define FEC_TCNTRL_HBC 0x00000002
#define FEC_TCNTRL_FDEN 0x00000004
#define FEC_TCNTRL_TFC_PAUSE 0x00000008
#define FEC_TCNTRL_RFC_PAUSE 0x00000010
#define FEC_ECNTRL_RESET 0x00000001 /* reset the FEC */
#define FEC_ECNTRL_ETHER_EN 0x00000002 /* enable the FEC */
#define FEC_ECNTRL_SPEED 0x00000020
#define FEC_ECNTRL_DBSWAP 0x00000100
#define FEC_ECNTRL_TXC_DLY 0x00010000 /* TXC delayed */
#define FEC_ECNTRL_RXC_DLY 0x00020000 /* RXC delayed */
#define FEC_X_WMRK_STRFWD 0x00000100
#define FEC_X_DES_ACTIVE_TDAR 0x01000000
#define FEC_R_DES_ACTIVE_RDAR 0x01000000
#if defined(CONFIG_MX25) || defined(CONFIG_MX53) || defined(CONFIG_MX6SL)
/* defines for MIIGSK */
/* RMII frequency control: 0=50MHz, 1=5MHz */
#define MIIGSK_CFGR_FRCONT (1 << 6)
/* loopback mode */
#define MIIGSK_CFGR_LBMODE (1 << 4)
/* echo mode */
#define MIIGSK_CFGR_EMODE (1 << 3)
/* MII gasket mode field */
#define MIIGSK_CFGR_IF_MODE_MASK (3 << 0)
/* MMI/7-Wire mode */
#define MIIGSK_CFGR_IF_MODE_MII (0 << 0)
/* RMII mode */
#define MIIGSK_CFGR_IF_MODE_RMII (1 << 0)
/* reflects MIIGSK Enable bit (RO) */
#define MIIGSK_ENR_READY (1 << 2)
/* enable MIGSK (set by default) */
#define MIIGSK_ENR_EN (1 << 1)
#endif
/**
* @brief Receive & Transmit Buffer Descriptor definitions
*
* Note: The first BD must be aligned (see DB_ALIGNMENT)
*/
struct fec_bd {
uint16_t data_length; /* payload's length in bytes */
uint16_t status; /* BD's staus (see datasheet) */
uint32_t data_pointer; /* payload's buffer address */
};
/* Supported phy types on this platform */
enum xceiver_type {
SEVENWIRE, /* 7-wire */
MII10, /* MII 10Mbps */
MII100, /* MII 100Mbps */
RMII, /* RMII */
RGMII, /* RGMII */
};
/* @brief i.MX27-FEC private structure */
struct fec_priv {
struct ethernet_regs *eth; /* pointer to register'S base */
enum xceiver_type xcv_type; /* transceiver type */
struct fec_bd *rbd_base; /* RBD ring */
int rbd_index; /* next receive BD to read */
struct fec_bd *tbd_base; /* TBD ring */
int tbd_index; /* next transmit BD to write */
bd_t *bd;
uint8_t *tdb_ptr;
int dev_id;
struct mii_dev *bus;
#ifdef CONFIG_PHYLIB
struct phy_device *phydev;
ofnode phy_of_node;
#else
int phy_id;
int (*mii_postcall)(int);
#endif
#ifdef CONFIG_DM_REGULATOR
struct udevice *phy_supply;
#endif
#if CONFIG_IS_ENABLED(DM_GPIO)
struct gpio_desc phy_reset_gpio;
uint32_t reset_delay;
uint32_t reset_post_delay;
#endif
#ifdef CONFIG_DM_ETH
u32 interface;
#endif
struct clk ipg_clk;
struct clk ahb_clk;
struct clk clk_enet_out;
struct clk clk_ref;
struct clk clk_ptp;
u32 clk_rate;
};
/**
* @brief Numbers of buffer descriptors for receiving
*
* The number defines the stocked memory buffers for the receiving task.
* Larger values makes no sense in this limited environment.
*/
#define FEC_RBD_NUM 64
/**
* @brief Define the ethernet packet size limit in memory
*
* Note: Do not shrink this number. This will force the FEC to spread larger
* frames in more than one BD. This is nothing to worry about, but the current
* driver can't handle it.
*/
#define FEC_MAX_PKT_SIZE 1536
/* Receive BD status bits */
#define FEC_RBD_EMPTY 0x8000 /* Receive BD status: Buffer is empty */
#define FEC_RBD_WRAP 0x2000 /* Receive BD status: Last BD in ring */
/* Receive BD status: Buffer is last in frame (useless here!) */
#define FEC_RBD_LAST 0x0800
#define FEC_RBD_MISS 0x0100 /* Receive BD status: Miss bit for prom mode */
/* Receive BD status: The received frame is broadcast frame */
#define FEC_RBD_BC 0x0080
/* Receive BD status: The received frame is multicast frame */
#define FEC_RBD_MC 0x0040
#define FEC_RBD_LG 0x0020 /* Receive BD status: Frame length violation */
#define FEC_RBD_NO 0x0010 /* Receive BD status: Nonoctet align frame */
#define FEC_RBD_CR 0x0004 /* Receive BD status: CRC error */
#define FEC_RBD_OV 0x0002 /* Receive BD status: Receive FIFO overrun */
#define FEC_RBD_TR 0x0001 /* Receive BD status: Frame is truncated */
#define FEC_RBD_ERR (FEC_RBD_LG | FEC_RBD_NO | FEC_RBD_CR | \
FEC_RBD_OV | FEC_RBD_TR)
/* Transmit BD status bits */
#define FEC_TBD_READY 0x8000 /* Tansmit BD status: Buffer is ready */
#define FEC_TBD_WRAP 0x2000 /* Tansmit BD status: Mark as last BD in ring */
#define FEC_TBD_LAST 0x0800 /* Tansmit BD status: Buffer is last in frame */
#define FEC_TBD_TC 0x0400 /* Tansmit BD status: Transmit the CRC */
#define FEC_TBD_ABC 0x0200 /* Tansmit BD status: Append bad CRC */
/* MII-related definitios */
#define FEC_MII_DATA_ST 0x40000000 /* Start of frame delimiter */
#define FEC_MII_DATA_OP_RD 0x20000000 /* Perform a read operation */
#define FEC_MII_DATA_OP_WR 0x10000000 /* Perform a write operation */
#define FEC_MII_DATA_PA_MSK 0x0f800000 /* PHY Address field mask */
#define FEC_MII_DATA_RA_MSK 0x007c0000 /* PHY Register field mask */
#define FEC_MII_DATA_TA 0x00020000 /* Turnaround */
#define FEC_MII_DATA_DATAMSK 0x0000ffff /* PHY data field */
#define FEC_MII_DATA_RA_SHIFT 18 /* MII Register address bits */
#define FEC_MII_DATA_PA_SHIFT 23 /* MII PHY address bits */
#endif /* __FEC_MXC_H */
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