diff options
| author | Neil Armstrong <narmstrong@baylibre.com> | 2017-10-18 10:02:10 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-11-17 07:44:13 -0500 |
| commit | 8995a96d1d6760c930e37fc92fb718624f5d8fbf (patch) | |
| tree | c9d5c60ce91091dfa6d5a1de484a545cd51c190d /drivers/net | |
| parent | 50a327ded68b7e675389ad284ea3f8c62e683bda (diff) | |
net: phy: Add Amlogic Meson GXL Internal PHY support
The Amlogic Meson GXL/GXM families embeds an internal RMII Ethernet PHY.
The PHY acts as a generic PHY but needs a slight configuration right
before it's configuration.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/net/phy/Makefile | 1 | ||||
| -rw-r--r-- | drivers/net/phy/meson-gxl.c | 57 | ||||
| -rw-r--r-- | drivers/net/phy/phy.c | 3 |
4 files changed, 64 insertions, 0 deletions
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index 4d02d8bb19..e32f1eb1c0 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -55,6 +55,9 @@ config PHY_LXT config PHY_MARVELL bool "Marvell Ethernet PHYs support" +config PHY_MESON_GXL + bool "Amlogic Meson GXL Internal PHY support" + config PHY_MICREL bool "Micrel Ethernet PHYs support" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 54f32f606b..1e264b2f2b 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_PHY_LXT) += lxt.o obj-$(CONFIG_PHY_MARVELL) += marvell.o obj-$(CONFIG_PHY_MICREL_KSZ8XXX) += micrel_ksz8xxx.o obj-$(CONFIG_PHY_MICREL_KSZ90X1) += micrel_ksz90x1.o +obj-$(CONFIG_PHY_MESON_GXL) += meson-gxl.o obj-$(CONFIG_PHY_NATSEMI) += natsemi.o obj-$(CONFIG_PHY_REALTEK) += realtek.o obj-$(CONFIG_PHY_SMSC) += smsc.o diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c new file mode 100644 index 0000000000..ccf70c94be --- /dev/null +++ b/drivers/net/phy/meson-gxl.c @@ -0,0 +1,57 @@ +/* + * 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> + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <config.h> +#include <common.h> +#include <linux/bitops.h> +#include <phy.h> + +static int meson_gxl_phy_config(struct phy_device *phydev) +{ + /* Enable Analog and DSP register Bank access by */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x0000); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x0400); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x0000); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x0400); + + /* Write Analog register 23 */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x17, 0x8E0D); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x4417); + + /* Enable fractional PLL */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x17, 0x0005); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x5C1B); + + /* Program fraction FR_PLL_DIV1 */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x17, 0x029A); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x5C1D); + + /* Program fraction FR_PLL_DIV1 */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x17, 0xAAAA); + phy_write(phydev, MDIO_DEVAD_NONE, 0x14, 0x5C1C); + + return genphy_config(phydev); +} + +static struct phy_driver meson_gxl_phy_driver = { + .name = "Meson GXL Internal PHY", + .uid = 0x01814400, + .mask = 0xfffffff0, + .features = PHY_BASIC_FEATURES, + .config = &meson_gxl_phy_config, + .startup = &genphy_startup, + .shutdown = &genphy_shutdown, +}; + +int phy_meson_gxl_init(void) +{ + phy_register(&meson_gxl_phy_driver); + + return 0; +} diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index 5be51d73ce..fd3dd556c8 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -494,6 +494,9 @@ int phy_init(void) #ifdef CONFIG_PHY_MICREL_KSZ90X1 phy_micrel_ksz90x1_init(); #endif +#ifdef CONFIG_PHY_MESON_GXL + phy_meson_gxl_init(); +#endif #ifdef CONFIG_PHY_NATSEMI phy_natsemi_init(); #endif |