Supports the Lantiq / Intel CHD 11G and 22E PHYs. These PHYs are also named PEF 7061, PEF 7071, PEF 7072
Signed-off-by: John Crispin <j...@phrozen.org> Signed-off-by: Hauke Mehrtens <ha...@hauke-m.de> --- This is based on a driver from OpenWrt / LEDE. This is send as a RFC because the merge window is open now and it adds a new driver. This patch was cleaned up on request of Alexander. .../devicetree/bindings/phy/phy-lanitq.txt | 216 +++++++++++++++++ drivers/net/phy/Kconfig | 6 + drivers/net/phy/Makefile | 1 + drivers/net/phy/lantiq.c | 269 +++++++++++++++++++++ 4 files changed, 492 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-lanitq.txt create mode 100644 drivers/net/phy/lantiq.c diff --git a/Documentation/devicetree/bindings/phy/phy-lanitq.txt b/Documentation/devicetree/bindings/phy/phy-lanitq.txt new file mode 100644 index 0000000..d9746e8 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-lanitq.txt @@ -0,0 +1,216 @@ +Lanitq PHY binding +============================================ + +This devicetree binding controls the lantiq ethernet phys led functionality. + +Example: + mdio@0 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "lantiq,xrx200-mdio"; + phy5: ethernet-phy@5 { + reg = <0x1>; + compatible = "lantiq,phy11g", "ethernet-phy-ieee802.3-c22"; + }; + phy11: ethernet-phy@11 { + reg = <0x11>; + compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22"; + lantiq,led2h = <0x00>; + lantiq,led2l = <0x03>; + }; + phy12: ethernet-phy@12 { + reg = <0x12>; + compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22"; + lantiq,led1h = <0x00>; + lantiq,led1l = <0x03>; + }; + phy13: ethernet-phy@13 { + reg = <0x13>; + compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22"; + lantiq,led2h = <0x00>; + lantiq,led2l = <0x03>; + }; + phy14: ethernet-phy@14 { + reg = <0x14>; + compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22"; + lantiq,led1h = <0x00>; + lantiq,led1l = <0x03>; + }; + }; + +Register Description +============================================ + +LEDCH: + +Name Hardware Reset Value +LEDCH 0x00C5 + +| 15 | | | | | | | 8 | +========================================= +| RES | +========================================= + +| 7 | | | | | | | 0 | +========================================= +| FBF | SBF |RES | NACS | +========================================= + +Field Bits Type Description +FBC 7:6 RW Fast Blink Frequency + --- + 0x0 (00b) F02HZ 2 Hz blinking frequency + 0x1 (01b) F04HZ 4 Hz blinking frequency + 0x2 (10b) F08HZ 8 Hz blinking frequency + 0x3 (11b) F16HZ 16 Hz blinking frequency + +SBF 5:4 RW Slow Blink Frequency + --- + 0x0 (00b) F02HZ 2 Hz blinking frequency + 0x1 (01b) F04HZ 4 Hz blinking frequency + 0x2 (10b) F08HZ 8 Hz blinking frequency + 0x3 (11b) F16HZ 16 Hz blinking frequency + +NACS 2:0 RW Inverse of Scan Function + --- + 0x0 (000b) NONE No Function + 0x1 (001b) LINK Complex function enabled when link is up + 0x2 (010b) PDOWN Complex function enabled when device is powered-down + 0x3 (011b) EEE Complex function enabled when device is in EEE mode + 0x4 (100b) ANEG Complex function enabled when auto-negotiation is running + 0x5 (101b) ABIST Complex function enabled when analog self-test is running + 0x6 (110b) CDIAG Complex function enabled when cable diagnostics are running + 0x7 (111b) TEST Complex function enabled when test mode is running + +LEDCL: + +Name Hardware Reset Value +LEDCL 0x0067 + +| 15 | | | | | | | 8 | +========================================= +| RES | +========================================= + +| 7 | | | | | | | 0 | +========================================= +|RES | SCAN |RES | CBLINK | +========================================= + +Field Bits Type Description +SCAN 6:4 RW Complex Scan Configuration + --- + 000 B NONE No Function + 001 B LINK Complex function enabled when link is up + 010 B PDOWN Complex function enabled when device is powered-down + 011 B EEE Complex function enabled when device is in EEE mode + 100 B ANEG Complex function enabled when auto-negotiation is running + 101 B ABIST Complex function enabled when analog self-test is running + 110 B CDIAG Complex function enabled when cable diagnostics are running + 111 B TEST Complex function enabled when test mode is running + +CBLINK 2:0 RW Complex Blinking Configuration + --- + 000 B NONE No Function + 001 B LINK Complex function enabled when link is up + 010 B PDOWN Complex function enabled when device is powered-down + 011 B EEE Complex function enabled when device is in EEE mode + 100 B ANEG Complex function enabled when auto-negotiation is running + 101 B ABIST Complex function enabled when analog self-test is running + 110 B CDIAG Complex function enabled when cable diagnostics are running + 111 B TEST Complex function enabled when test mode is running + +LEDxH: + +Name Hardware Reset Value +LED0H 0x0070 +LED1H 0x0020 +LED2H 0x0040 +LED3H 0x0040 + +| 15 | | | | | | | 8 | +========================================= +| RES | +========================================= + +| 7 | | | | | | | 0 | +========================================= +| CON | BLINKF | +========================================= + +Field Bits Type Description +CON 7:4 RW Constant On Configuration + --- + 0x0 (0000b) NONE LED does not light up constantly + 0x1 (0001b) LINK10 LED is on when link is 10 Mbit/s + 0x2 (0010b) LINK100 LED is on when link is 100 Mbit/s + 0x3 (0011b) LINK10X LED is on when link is 10/100 Mbit/s + 0x4 (0100b) LINK1000 LED is on when link is 1000 Mbit/s + 0x5 (0101b) LINK10_0 LED is on when link is 10/1000 Mbit/s + 0x6 (0110b) LINK100X LED is on when link is 100/1000 Mbit/s + 0x7 (0111b) LINK10XX LED is on when link is 10/100/1000 Mbit/s + 0x8 (1000b) PDOWN LED is on when device is powered-down + 0x9 (1001b) EEE LED is on when device is in EEE mode + 0xA (1010b) ANEG LED is on when auto-negotiation is running + 0xB (1011b) ABIST LED is on when analog self-test is running + 0xC (1100b) CDIAG LED is on when cable diagnostics are running + +BLINKF 3:0 RW Fast Blinking Configuration + --- + 0x0 (0000b) NONE No Blinking + 0x1 (0001b) LINK10 Blink when link is 10 Mbit/s + 0x2 (0010b) LINK100 Blink when link is 100 Mbit/s + 0x3 (0011b) LINK10X Blink when link is 10/100 Mbit/s + 0x4 (0100b) LINK1000 Blink when link is 1000 Mbit/s + 0x5 (0101b) LINK10_0 Blink when link is 10/1000 Mbit/s + 0x6 (0110b) LINK100X Blink when link is 100/1000 Mbit/s + 0x7 (0111b) LINK10XX Blink when link is 10/100/1000 Mbit/s + 0x8 (1000b) PDOWN Blink when device is powered-down + 0x9 (1001b) EEE Blink when device is in EEE mode + 0xA (1010b) ANEG Blink when auto-negotiation is running + 0xB (1011b) ABIST Blink when analog self-test is running + 0xC (1100b) CDIAG Blink when cable diagnostics are running + +LEDxL: + +Name Hardware Reset Value +LED0L 0x0003 +LED1L 0x0000 +LED2L 0x0000 +LED3L 0x0020 + +| 15 | | | | | | | 8 | +========================================= +| RES | +========================================= + +| 7 | | | | | | | 0 | +========================================= +| BLINKS | PULSE | +========================================= + +Field Bits Type Description +BLINKS 7:4 RW Slow Blinkin Configuration + --- + 0x0 (0000b) NONE No Blinking + 0x1 (0001b) LINK10 Blink when link is 10 Mbit/s + 0x2 (0010b) LINK100 Blink when link is 100 Mbit/s + 0x3 (0011b) LINK10X Blink when link is 10/100 Mbit/s + 0x4 (0100b) LINK1000 Blink when link is 1000 Mbit/s + 0x5 (0101b) LINK10_0 Blink when link is 10/1000 Mbit/s + 0x6 (0110b) LINK100X Blink when link is 100/1000 Mbit/s + 0x7 (0111b) LINK10XX Blink when link is 10/100/1000 Mbit/s + 0x8 (1000b) PDOWN Blink when device is powered-down + 0x9 (1001b) EEE Blink when device is in EEE mode + 0xA (1010b) ANEG Blink when auto-negotiation is running + 0xB (1011b) ABIST Blink when analog self-test is running + 0xC (1100b) CDIAG Blink when cable diagnostics are runningning + +PULSE 3:0 RW Pulsing Configuration + The pulse field is a mask field by which certain events can be combined + --- + 0x0 (0000b) NONE No pulsing + 0x1 (0001b) TXACT Transmit activity + 0x2 (0010b) RXACT Receive activity + 0x4 (0100b) COL Collision + 0x8 (1000b) RES Reserved diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index f0a7702..f3685ef 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -257,6 +257,12 @@ config MDIO_BCM_IPROC This module provides a driver for the MDIO busses found in the Broadcom iProc SoC's. +config LANTIQ_PHY + tristate "Driver for Lantiq PHYs" + ---help--- + Supports the Lantiq / Intel CHD 11G and 22E PHYs. + These PHYs are also named PEF 7061, PEF 7071 and PEF 7072 + endif # PHYLIB config MICREL_KS8995MA diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 680e88f9..042b0ef6 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -42,3 +42,4 @@ obj-$(CONFIG_MDIO_MOXART) += mdio-moxart.o obj-$(CONFIG_MDIO_BCM_UNIMAC) += mdio-bcm-unimac.o obj-$(CONFIG_MICROCHIP_PHY) += microchip.o obj-$(CONFIG_MDIO_BCM_IPROC) += mdio-bcm-iproc.o +obj-$(CONFIG_LANTIQ_PHY) += lantiq.o diff --git a/drivers/net/phy/lantiq.c b/drivers/net/phy/lantiq.c new file mode 100644 index 0000000..65a8086 --- /dev/null +++ b/drivers/net/phy/lantiq.c @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2012 Daniel Schwierzeck <daniel.schwierz...@googlemail.com> + * Copyright (C) 2016 Hauke Mehrtens <ha...@hauke-m.de> + * + * 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/mdio.h> +#include <linux/module.h> +#include <linux/phy.h> +#include <linux/of.h> + +#define MII_VR9_11G_IMASK 0x19 /* interrupt mask */ +#define MII_VR9_11G_ISTAT 0x1a /* interrupt status */ + +#define INT_VR9_11G_WOL BIT(15) /* Wake-On-LAN */ +#define INT_VR9_11G_ANE BIT(11) /* Auto-Neg error */ +#define INT_VR9_11G_ANC BIT(10) /* Auto-Neg complete */ +#define INT_VR9_11G_ADSC BIT(5) /* Link auto-downspeed detect */ +#define INT_VR9_11G_DXMC BIT(2) /* Duplex mode change */ +#define INT_VR9_11G_LSPC BIT(1) /* Link speed change */ +#define INT_VR9_11G_LSTC BIT(0) /* Link state change */ +#define INT_VR9_11G_MASK (INT_VR9_11G_LSTC | INT_VR9_11G_ADSC) + +#define ADVERTISED_MPD BIT(10) /* Multi-port device */ + +#define PHY_ID_PHY11G_1_3 0x030260D1 +#define PHY_ID_PHY22F_1_3 0x030260E1 +#define PHY_ID_PHY11G_1_4 0xD565A400 +#define PHY_ID_PHY22F_1_4 0xD565A410 +#define PHY_ID_PHY11G_1_5 0xD565A401 +#define PHY_ID_PHY22F_1_5 0xD565A411 + +static void lantiq_gphy_of_reg_init(struct phy_device *phydev) +{ + struct device_node *node = phydev->mdio.dev.of_node; + u32 tmp; + + if (!IS_ENABLED(CONFIG_OF_MDIO)) + return; + + /* store the led values if one was passed by the device tree */ + if (!of_property_read_u32(node, "lantiq,ledch", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e0, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,ledcl", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e1, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led0h", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e2, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led0l", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e3, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led1h", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e4, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led1l", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e5, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led2h", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e6, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led2l", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e7, MDIO_MMD_VEND2, tmp); + + /* The LED3 is only available in PEF 7072 package. */ + if (!of_property_read_u32(node, "lantiq,led3h", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e8, MDIO_MMD_VEND2, tmp); + + if (!of_property_read_u32(node, "lantiq,led3l", &tmp)) + phy_write_mmd_indirect(phydev, 0x1e9, MDIO_MMD_VEND2, tmp); +} + +static int lantiq_gphy_config_init(struct phy_device *phydev) +{ + int err; + + /* Mask all interrupts */ + err = phy_write(phydev, MII_VR9_11G_IMASK, 0); + if (err) + return err; + + /* Clear all pending interrupts */ + phy_read(phydev, MII_VR9_11G_ISTAT); + + phy_write_mmd_indirect(phydev, 0x1e0, MDIO_MMD_VEND2, 0xc5); + phy_write_mmd_indirect(phydev, 0x1e1, MDIO_MMD_VEND2, 0x67); + phy_write_mmd_indirect(phydev, 0x1e2, MDIO_MMD_VEND2, 0x42); + phy_write_mmd_indirect(phydev, 0x1e3, MDIO_MMD_VEND2, 0x10); + phy_write_mmd_indirect(phydev, 0x1e4, MDIO_MMD_VEND2, 0x70); + phy_write_mmd_indirect(phydev, 0x1e5, MDIO_MMD_VEND2, 0x03); + phy_write_mmd_indirect(phydev, 0x1e6, MDIO_MMD_VEND2, 0x20); + phy_write_mmd_indirect(phydev, 0x1e7, MDIO_MMD_VEND2, 0x00); + phy_write_mmd_indirect(phydev, 0x1e8, MDIO_MMD_VEND2, 0x40); + phy_write_mmd_indirect(phydev, 0x1e9, MDIO_MMD_VEND2, 0x20); + + lantiq_gphy_of_reg_init(phydev); + + return 0; +} + +static int lantiq_gphy14_config_aneg(struct phy_device *phydev) +{ + int reg, err; + + /* Advertise as multi-port device, see IEEE802.3-2002 40.5.1.1 */ + /* This is a workaround for an errata in rev < 1.5 devices */ + reg = phy_read(phydev, MII_CTRL1000); + reg |= ADVERTISED_MPD; + err = phy_write(phydev, MII_CTRL1000, reg); + if (err) + return err; + + return genphy_config_aneg(phydev); +} + +static int lantiq_gphy_ack_interrupt(struct phy_device *phydev) +{ + int reg; + + /** + * Possible IRQ numbers: + * - IM3_IRL18 for GPHY0 + * - IM3_IRL17 for GPHY1 + * + * Due to a silicon bug IRQ lines are not really independent from + * each other. Sometimes the two lines are driven at the same time + * if only one GPHY core raises the interrupt. + */ + reg = phy_read(phydev, MII_VR9_11G_ISTAT); + + return (reg < 0) ? reg : 0; +} + +static int lantiq_gphy_did_interrupt(struct phy_device *phydev) +{ + int reg; + + reg = phy_read(phydev, MII_VR9_11G_ISTAT); + + return reg > 0; +} + +static int lantiq_gphy_config_intr(struct phy_device *phydev) +{ + int err; + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) + err = phy_write(phydev, MII_VR9_11G_IMASK, INT_VR9_11G_MASK); + else + err = phy_write(phydev, MII_VR9_11G_IMASK, 0); + + return err; +} + +static struct phy_driver lantiq_gphy[] = { + { + .phy_id = PHY_ID_PHY11G_1_3, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY11G (PEF 7071/PEF 7072) v1.3", + .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause), + /* there is an errata regarding irqs in this rev */ + .flags = 0, + .config_init = lantiq_gphy_config_init, + .config_aneg = lantiq_gphy14_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, { + .phy_id = PHY_ID_PHY22F_1_3, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY22F (PEF 7061) v1.3", + .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), + /* there is an errata regarding irqs in this rev */ + .flags = 0, + .config_init = lantiq_gphy_config_init, + .config_aneg = lantiq_gphy14_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, { + .phy_id = PHY_ID_PHY11G_1_4, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY11G (PEF 7071/PEF 7072) v1.4", + .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause), + .flags = PHY_HAS_INTERRUPT, + .config_init = lantiq_gphy_config_init, + .config_aneg = lantiq_gphy14_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, { + .phy_id = PHY_ID_PHY22F_1_4, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY22F (PEF 7061) v1.4", + .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), + .flags = PHY_HAS_INTERRUPT, + .config_init = lantiq_gphy_config_init, + .config_aneg = lantiq_gphy14_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, { + .phy_id = PHY_ID_PHY11G_1_5, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY11G (PEF 7071/PEF 7072) v1.5 / v1.6", + .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause), + .flags = PHY_HAS_INTERRUPT, + .config_init = lantiq_gphy_config_init, + .config_aneg = genphy_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, { + .phy_id = PHY_ID_PHY22F_1_5, + .phy_id_mask = 0xffffffff, + .name = "Lantiq XWAY PHY22F (PEF 7061) v1.5 / v1.6", + .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause), + .flags = PHY_HAS_INTERRUPT, + .config_init = lantiq_gphy_config_init, + .config_aneg = genphy_config_aneg, + .read_status = genphy_read_status, + .ack_interrupt = lantiq_gphy_ack_interrupt, + .did_interrupt = lantiq_gphy_did_interrupt, + .config_intr = lantiq_gphy_config_intr, + .suspend = genphy_suspend, + .resume = genphy_resume, + }, +}; +module_phy_driver(lantiq_gphy); + +static struct mdio_device_id __maybe_unused lantiq_gphy_tbl[] = { + { PHY_ID_PHY11G_1_3, 0xffffffff }, + { PHY_ID_PHY22F_1_3, 0xffffffff }, + { PHY_ID_PHY11G_1_4, 0xffffffff }, + { PHY_ID_PHY22F_1_4, 0xffffffff }, + { PHY_ID_PHY11G_1_5, 0xffffffff }, + { PHY_ID_PHY22F_1_5, 0xffffffff }, + { } +}; +MODULE_DEVICE_TABLE(mdio, lantiq_gphy_tbl); + +MODULE_DESCRIPTION("Lantiq PHY driver"); +MODULE_AUTHOR("Daniel Schwierzeck <daniel.schwierz...@googlemail.com>"); +MODULE_LICENSE("GPL"); -- 2.8.1