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/*
* Amlogic Meson GXL Internal PHY Driver
*
* Copyright (C) 2015 Amlogic, Inc. All rights reserved.
* Copyright (C) 2016 BayLibre, SAS. All rights reserved.
* Author: Neil Armstrong <narmstrong@baylibre.com>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/netdevice.h>
static int meson_gxl_config_init(struct phy_device *phydev)
{
/* Enable Analog and DSP register Bank access by */
phy_write(phydev, 0x14, 0x0000);
phy_write(phydev, 0x14, 0x0400);
phy_write(phydev, 0x14, 0x0000);
phy_write(phydev, 0x14, 0x0400);
/* Write Analog register 23 */
phy_write(phydev, 0x17, 0x8E0D);
phy_write(phydev, 0x14, 0x4417);
/* Enable fractional PLL */
phy_write(phydev, 0x17, 0x0005);
phy_write(phydev, 0x14, 0x5C1B);
/* Program fraction FR_PLL_DIV1 */
phy_write(phydev, 0x17, 0x029A);
phy_write(phydev, 0x14, 0x5C1D);
/* Program fraction FR_PLL_DIV1 */
phy_write(phydev, 0x17, 0xAAAA);
phy_write(phydev, 0x14, 0x5C1C);
return 0;
}
static struct phy_driver meson_gxl_phy[] = {
{
.phy_id = 0x01814400,
.phy_id_mask = 0xfffffff0,
.name = "Meson GXL Internal PHY",
.features = PHY_BASIC_FEATURES,
.flags = PHY_IS_INTERNAL,
.config_init = meson_gxl_config_init,
.aneg_done = genphy_aneg_done,
.suspend = genphy_suspend,
.resume = genphy_resume,
},
};
static struct mdio_device_id __maybe_unused meson_gxl_tbl[] = {
{ 0x01814400, 0xfffffff0 },
{ }
};
module_phy_driver(meson_gxl_phy);
MODULE_DEVICE_TABLE(mdio, meson_gxl_tbl);
MODULE_DESCRIPTION("Amlogic Meson GXL Internal PHY driver");
MODULE_AUTHOR("Baoqi wang");
MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
MODULE_LICENSE("GPL");
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