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path: root/drivers/net/phy/mscc.c (follow)
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2019-12-19net: phy: remove redundant .aneg_done initialisersRussell King1-6/+0
Remove initialisers that set .aneg_done to genphy_aneg_done - this is the default for clause 22 PHYs, so the initialiser is redundant. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-16mscc.c: fix semicolon.cocci warningskbuild test robot1-1/+1
drivers/net/phy/mscc.c:1683:3-4: Unneeded semicolon Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci Fixes: 75a1ccfe6c72 ("mscc.c: Add support for additional VSC PHYs") CC: Bryan Whitehead <Bryan.Whitehead@microchip.com> Signed-off-by: kbuild test robot <lkp@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-11-13mscc.c: Add support for additional VSC PHYsBryan Whitehead1-6/+188
Add support for the following VSC PHYs VSC8504, VSC8552, VSC8572 VSC8562, VSC8564, VSC8575, VSC8582 Updates for v2: Checked for NULL on input to container_of Changed a large if else series to a switch statement. Added a WARN_ON to make sure lowest nibble of mask is 0 Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-08net: phy: mscc: make arrays static, makes object smallerColin Ian King1-7/+7
Don't populate const arrays on the stack but instead make them static. Makes the object code smaller by 1058 bytes. Before: text data bss dec hex filename 29879 6144 0 36023 8cb7 drivers/net/phy/mscc.o After: text data bss dec hex filename 28437 6528 0 34965 8895 drivers/net/phy/mscc.o (gcc version 9.2.1, amd64) Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
2019-08-17net: phy: remove calls to genphy_config_initHeiner Kallweit1-2/+2
Supported PHY features are either auto-detected or explicitly set. In both cases calling genphy_config_init isn't needed. All that genphy_config_init does is removing features that are set as supported but can't be auto-detected. Basically it duplicates the code in genphy_read_abilities. Therefore remove such calls from all PHY drivers. v2: - remove call also from new adin PHY driver v3: - pass NULL as config_init function pointer for dp83848 Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-24net: phy: mscc: initialize stats arrayAndreas Schwab1-8/+8
The memory allocated for the stats array may contain arbitrary data. Fixes: e4f9ba642f0b ("net: phy: mscc: add support for VSC8514 PHY.") Fixes: 00d70d8e0e78 ("net: phy: mscc: add support for VSC8574 PHY") Fixes: a5afc1678044 ("net: phy: mscc: add support for VSC8584 PHY") Fixes: f76178dc5218 ("net: phy: mscc: add ethtool statistics counters") Signed-off-by: Andreas Schwab <schwab@suse.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-23net: phy: mscc: add support for VSC8514 PHY.Kavya Sree Kotagiri1-0/+467
The VSC8514 PHY is a 4-ports PHY that is 10/100/1000BASE-T, 100BASE-FX, 1000BASE-X, can communicate with the MAC via QSGMII. The MAC interface protocol for each port within QSGMII can be either 1000BASE-X or SGMII, if the QSGMII MAC that the VSC8514 is connecting to supports this functionality. VSC8514 also supports SGMII MAC-side autonegotiation on each individual port, downshifting, can set the blinking pattern of each of its 4 LEDs, SyncE, 1000BASE-T Ring Resiliency as well as HP Auto-MDIX detection. This adds support for 10BASE-T, 100BASE-TX, and 1000BASE-T, QSGMII link with the MAC, downshifting, HP Auto-MDIX detection and blinking pattern for its 4 LEDs. The GPIO register bank is a set of registers that are common to all PHYs in the package. So any modification in any register of this bank affects all PHYs of the package. If the PHYs haven't been reset before booting the Linux kernel and were configured to use interrupts for e.g. link status updates, it is required to clear the interrupts mask register of all PHYs before being able to use interrupts with any PHY. The first PHY of the package that will be init will take care of clearing all PHYs interrupts mask registers. Thus, we need to keep track of the init sequence in the package, if it's already been done or if it's to be done. Most of the init sequence of a PHY of the package is common to all PHYs in the package, thus we use the SMI broadcast feature which enables us to propagate a write in one register of one PHY to all PHYs in the same package. Signed-off-by: Kavya Sree Kotagiri <kavyasree.kotagiri@microchip.com> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Co-developed-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-15net: phy: switch drivers to use dynamic feature detectionHeiner Kallweit1-6/+6
Recently genphy_read_abilities() has been added that dynamically detects clause 22 PHY abilities. I *think* this detection should work with all supported PHY's, at least for the ones with basic features sets, i.e. PHY_BASIC_FEATURES and PHY_GBIT_FEATURES. So let's remove setting these features explicitly and rely on phylib feature detection. I don't have access to most of these PHY's, therefore I'd appreciate regression testing. v2: - make the feature constant a comment so that readers know which features are supported by the respective PHY Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Tested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-22net: phy: Convert some PHY and MDIO driver files to SPDX headersAndrew Lunn1-0/+1
Where the license text and the MODULE_LICENSE() value agree, convert to using an SPDX header, removing the license text. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-19net: phy: mscc: Fix the VSC 8531/41 Chip Init sequenceRaju Lakkaraju1-1/+54
- Turn on Broadcast writes - UNH 1.8.1 clear bias for UNH 1000BT distortion - UNH 1.8.7 optimize pre-emphasis for 100BasTx UNH 100W fix - Enable Token-ring during 'Coma Mode' Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-9/+5
2018-11-23net: phy: mscc: fix deadlock in vsc85xx_default_configQuentin Schulz1-9/+5
The vsc85xx_default_config function called in the vsc85xx_config_init function which is used by VSC8530, VSC8531, VSC8540 and VSC8541 PHYs mistakenly calls phy_read and phy_write in-between phy_select_page and phy_restore_page. phy_select_page and phy_restore_page actually take and release the MDIO bus lock and phy_write and phy_read take and release the lock to write or read to a PHY register. Let's fix this deadlock by using phy_modify_paged which handles correctly a read followed by a write in a non-standard page. Fixes: 6a0bfbbe20b0 ("net: phy: mscc: migrate to phy_select/restore_page functions") Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-11net: phy: remove flag PHY_HAS_INTERRUPT from driver configsHeiner Kallweit1-6/+0
Now that flag PHY_HAS_INTERRUPT has been replaced with a check for callbacks config_intr and ack_interrupt, we can remove setting this flag from all driver configs. Last but not least remove flag PHY_HAS_INTERRUPT completely. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-17net: phy: mscc: fix memory leak in vsc8574_config_pre_initGustavo A. R. Silva1-1/+1
In case memory resources for *fw* were successfully allocated, release them before return. Addresses-Coverity-ID: 1473968 ("Resource leak") Fixes: 00d70d8e0e78 ("net: phy: mscc: add support for VSC8574 PHY") Reviewed-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-17net: phy: mscc: fix signedness bug in vsc85xx_downshift_getGustavo A. R. Silva1-1/+1
Currently, the error handling for the call to function phy_read_paged() doesn't work because *reg_val* is of type u16 (16 bits, unsigned), which makes it impossible for it to hold a value less than 0. Fix this by changing the type of variable *reg_val* to int. Addresses-Coverity-ID: 1473970 ("Unsigned compared against 0") Fixes: 6a0bfbbe20b0 ("net: phy: mscc: migrate to phy_select/restore_page functions") Reviewed-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: add support for VSC8574 PHYQuentin Schulz1-1/+319
The VSC8574 PHY is a 4-ports PHY that is 10/100/1000BASE-T, 100BASE-FX, 1000BASE-X and triple-speed copper SFP capable, can communicate with the MAC via SGMII, QSGMII or 1000BASE-X, supports WOL, downshifting and can set the blinking pattern of each of its 4 LEDs, supports SyncE as well as HP Auto-MDIX detection. This adds support for 10/100/1000BASE-T, SGMII/QSGMII link with the MAC, WOL, downshifting, HP Auto-MDIX detection and blinking pattern for its 4 LEDs. The VSC8574 has also an internal Intel 8051 microcontroller whose firmware needs to be patched when the PHY is reset. If the 8051's firmware has the expected CRC, its patching can be skipped. The microcontroller can be accessed from any port of the PHY, though the CRC function can only be done through the PHY that is the base PHY of the package (internal address 0) due to a limitation of the firmware. The GPIO register bank is a set of registers that are common to all PHYs in the package. So any modification in any register of this bank affects all PHYs of the package. If the PHYs haven't been reset before booting the Linux kernel and were configured to use interrupts for e.g. link status updates, it is required to clear the interrupts mask register of all PHYs before being able to use interrupts with any PHY. The first PHY of the package that will be init will take care of clearing all PHYs interrupts mask registers. Thus, we need to keep track of the init sequence in the package, if it's already been done or if it's to be done. Most of the init sequence of a PHY of the package is common to all PHYs in the package, thus we use the SMI broadcast feature which enables us to propagate a write in one register of one PHY to all PHYs in the same package. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: add support for VSC8584 PHYQuentin Schulz1-0/+747
The VSC8584 PHY is a 4-ports PHY that is 10/100/1000BASE-T, 100BASE-FX, 1000BASE-X and triple-speed copper SFP capable, can communicate with the MAC via SGMII, QSGMII or 1000BASE-X, supports downshifting and can set the blinking pattern of each of its 4 LEDs, supports hardware offloading of MACsec and supports SyncE as well as HP Auto-MDIX detection. This adds support for 10/100/1000BASE-T, SGMII/QSGMII link with the MAC, downshifting, HP Auto-MDIX detection and blinking pattern for its 4 LEDs. The VSC8584 has also an internal Intel 8051 microcontroller whose firmware needs to be patched when the PHY is reset. If the 8051's firmware has the expected CRC, its patching can be skipped. The microcontroller can be accessed from any port of the PHY, though the CRC function can only be done through the PHY that is the base PHY of the package (internal address 0) due to a limitation of the firmware. The GPIO register bank is a set of registers that are common to all PHYs in the package. So any modification in any register of this bank affects all PHYs of the package. If the PHYs haven't been reset before booting the Linux kernel and were configured to use interrupts for e.g. link status updates, it is required to clear the interrupts mask register of all PHYs before being able to use interrupts with any PHY. The first PHY of the package that will be init will take care of clearing all PHYs interrupts mask registers. Thus, we need to keep track of the init sequence in the package, if it's already been done or if it's to be done. Most of the init sequence of a PHY of the package is common to all PHYs in the package, thus we use the SMI broadcast feature which enables us to propagate a write in one register of one PHY to all PHYs in the same package. The revA of the VSC8584 PHY (which is not and will not be publicly released) should NOT patch the firmware of the microcontroller or it'll make things worse, the easiest way is just to not support it. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: remove unneeded temporary variableQuentin Schulz1-8/+4
Here, the rc variable is either used only for the condition right after the assignment or right before being used as the return value of the function it's being used in. So let's remove this unneeded temporary variable whenever possible. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: shorten `x != 0` condition to `x`Quentin Schulz1-4/+4
`if (x != 0)` is basically a more verbose version of `if (x)` so let's use the latter so it's consistent throughout the whole driver. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: remove unneeded parenthesisQuentin Schulz1-1/+1
The == operator precedes the || operator, so we can remove the parenthesis around (a == b) || (c == d). The condition is rather explicit and short so removing the parenthesis definitely does not make it harder to read. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: Add EEE init sequenceRaju Lakkaraju1-0/+65
Microsemi PHYs (VSC 8530/31/40/41) need to update the Energy Efficient Ethernet initialization sequence. In order to avoid certain link state errors that could result in link drops and packet loss, the physical coding sublayer (PCS) must be updated with settings related to EEE in order to improve performance. Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microchip.com> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: add ethtool statistics countersRaju Lakkaraju1-0/+119
There are a few counters available in the PHY: receive errors, false carriers, link disconnects, media CRC errors and valids counters. So let's expose those in the PHY driver. Use the priv structure as the next PHY to be supported has a few additional counters. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-08net: phy: mscc: migrate to phy_select/restore_page functionsQuentin Schulz1-84/+62
The Microsemi PHYs have multiple banks of registers (called pages). Registers can only be accessed from one page, if we need a register from another page, we need to switch the page and the registers of all other pages are not accessible anymore. Basically, to read register 5 from page 0, 1, 2, etc., you do the same phy_read(phydev, 5); but you need to set the desired page beforehand. In order to guarantee that two concurrent functions do not change the page, we need to do some locking per page. This can be achieved with the use of phy_select_page and phy_restore_page functions but phy_write/read calls in-between those two functions shall be replaced by their lock-free alternative __phy_write/read. Let's migrate this driver to those functions. Suggested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-28phy: mscc: fix printf formatArnd Bergmann1-1/+1
gcc points out that the length of the temporary buffer may not be sufficient for large numbers of leds: drivers/net/phy/mscc.c: In function 'vsc85xx_probe': drivers/net/phy/mscc.c:460:45: error: '-mode' directive writing 5 bytes into a region of size between 0 and 9 [-Werror=format-overflow=] ret = sprintf(led_dt_prop, "vsc8531,led-%d-mode", i); ^~~~~ drivers/net/phy/mscc.c:460:9: note: 'sprintf' output between 19 and 28 bytes into a destination of size 22 ret = sprintf(led_dt_prop, "vsc8531,led-%d-mode", i); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ While we can make a reasonable assumption that the number of LEDs is small, the cost of making the buffer a little bigger is insignificant as well. Fixes: 11bfdabb7ff5 ("net: phy: mscc: factorize code for LEDs mode") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-04net: phy: mscc: read 'vsc8531, led-%d-mode' as an u32Quentin Schulz1-6/+7
In the DT binding, it is specified nowhere that 'vsc8531,led-%d-mode' is an u8, even though it's read as an u8 in the driver. Let's update the driver to take into consideration that the 'vsc8531,led-%d-mode' property is of the default type u32. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-04net: phy: mscc: read 'vsc8531, edge-slowdown' as an u32Quentin Schulz1-4/+3
In the DT binding, it is specified nowhere that 'vsc8531,edge-slowdown' is an u8, even though it's read as an u8 in the driver. Let's update the driver to take into consideration that the 'vsc8531,edge-slowdown' property is of the default type u32. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-04net: phy: mscc: read 'vsc8531,vddmac' as an u32Quentin Schulz1-3/+3
In the DT binding, it is specified nowhere that 'vsc8531,vddmac' is an u16, even though it's read as an u16 in the driver. Let's update the driver to take into consideration that the 'vsc8531,vddmac' property is of the default type u32. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-04net: phy: mscc: factorize function for getting LED mode from DTQuentin Schulz1-1/+19
Microsemi PHYs support different LED modes depending on the variant, so let's factorize the code so we just have to give the supported modes while the logic behind getting the mode remains identical. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-09-04net: phy: mscc: factorize code for LEDs modeQuentin Schulz1-36/+39
LEDs modes are set the same way, except they are offset by 4 times the index of the LED. Let's factorize all the code so that it's easier to add support for the 4 LEDs of the VSC8584 PHY. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-30net: phy: mscc: the extended page access register is 16 bitsQuentin Schulz1-1/+1
The Extended Page Access is a 16-bit register, so change the page parameter of vsc85xx_phy_page_set to a u16. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-08net: phy: Add LED mode driver for Microsemi PHYs.Raju Lakkaraju1-1/+84
LED Mode: Microsemi PHY support 2 LEDs (LED[0] and LED[1]) to display different status information that can be selected by setting LED mode. LED Mode parameter (vsc8531, led-0-mode) and (vsc8531, led-1-mode) get from Device Tree. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-01net: phy: Add mdi(x) support in Microsemi PHYs driverRaju Lakkaraju1-8/+97
To connect two ports of the same configuration (MDI to MDI or MDI-X to MDI-X) with a 10/100/1000 Mbit/s connection, an Ethernet crossover cable is needed to cross over the transmit and receive signals in the cable, so that they are matched at the connector level. When connecting an MDI port to an MDI-X port a straight through cable is used while to connect two MDI ports or two MDI-X ports a crossover cable must be used. Conventionally MDI is used on end devices while MDI-X is used on hubs and switches Auto MDI-X automatically detects the required cable connection type and configures the connection appropriately, removing the need for crossover cables to interconnect switches or connecting PCs peer-to-peer. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-24ethtool: Protect {get, set}_phy_tunable with PHY device mutexFlorian Fainelli1-11/+5
PHY drivers should be able to rely on the caller of {get,set}_tunable to have acquired the PHY device mutex, in order to both serialize against concurrent calls of these functions, but also against PHY state machine changes. All ethtool PHY-level functions do this, except {get,set}_tunable, so we make them consistent here as well. We need to update the Microsemi PHY driver in the same commit to avoid introducing either deadlocks, or lack of proper locking. Fixes: 968ad9da7e0e ("ethtool: Implements ETHTOOL_PHY_GTUNABLE/ETHTOOL_PHY_STUNABLE") Fixes: 310d9ad57ae0 ("net: phy: Add downshift get/set support in Microsemi PHYs driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Allan W. Nielsen <allan.nielsen@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18net: phy: Add downshift get/set support in Microsemi PHYs driverRaju Lakkaraju1-0/+100
Implements the phy tunable function pointers and implement downshift functionality for MSCC PHYs. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Allan W. Nielsen <allan.nielsen@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29net: phy: Add support for Microsemi VSC 8530/40 Fast Ethernet PHYRaju Lakkaraju1-0/+42
Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: Allan W. Nielsen <allan.nielsen@microsemi.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-14net: phy: Cleanup the Edge-Rate feature in Microsemi PHYs.Allan W. Nielsen1-73/+62
Edge-Rate cleanup include the following: - Updated device tree bindings documentation for edge-rate - The edge-rate is now specified as a "slowdown", meaning that it is now being specified as positive values instead of negative (both documentation and implementation wise). - Only explicitly documented values for "vsc8531,vddmac" and "vsc8531,edge-slowdown" are accepted by the device driver. - Deleted include/dt-bindings/net/mscc-phy-vsc8531.h as it was not needed. - Read/validate devicetree settings in probe instead of init Signed-off-by: Allan W. Nielsen <allan.nielsen@microsemi.com> Signed-off-by: Raju Lakkaraju <raju.lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-06net: phy: Add Wake-on-LAN driver for Microsemi PHYs.Raju Lakkaraju1-0/+128
Wake-on-LAN (WoL) is an Ethernet networking standard that allows a computer/device to be turned on or awakened by a network message. VSC8531 PHY can support this feature configure by driver set function. WoL status get by driver get function. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04net: phy: Add Edge-rate driver for Microsemi PHYs.Raju Lakkaraju1-0/+125
Edge-rate: As system and networking speeds increase, a signal's output transition, also know as the edge rate or slew rate (V/ns), takes on greater importance because high-speed signals come with a price. That price is an assortment of interference problems like ringing on the line, signal overshoot and undershoot, extended signal settling times, crosstalk noise, transmission line reflections, false signal detection by the receiving device and electromagnetic interference (EMI) -- all of which can negate the potential gains designers are seeking when they try to increase system speeds through the use of higher performance logic devices. The fact is, faster signaling edge rates can cause a higher level of electrical noise or other type of interference that can actually lead to slower line speeds and lower maximum system frequencies. This parameter allow the board designers to change the driving strange, and thereby change the EMI behavioral. Edge-rate parameters (vddmac, edge-slowdown) get from Device Tree. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-20net: phy: Add MAC-IF driver for Microsemi PHYs.Raju Lakkaraju1-0/+51
All the review comments updated and resending for review. This is MAC interface feature. Microsemi PHY can support RGMII, RMII or GMII/MII interface between MAC and PHY. MAC-IF function program the right value based on Device tree configuration. Tested on Beaglebone Black with VSC 8531 PHY. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-09-09net: phy: Fixed checkpatch errors for Microsemi PHYs.Raju Lakkaraju1-89/+89
The existing VSC85xx PHY driver did not follow the coding style and caused "checkpatch" to complain. This commit fixes this. Signed-off-by: Raju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-13net: phy: initialize rc to zero to avoid returning garbage valueColin Ian King1-1/+1
In the case where phydev->interrupts is not PHY_INTERRUPT_ENABLED function vsc85xx_ack_interrupt is returning an uninitialized garbage value. Fix this by initializing rc to zero. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-08-08Microsemi VSC 8531/41 PHY DriverRaju Lakkaraju1-0/+161
Hello, I added all review comments and re-sending for review. >From a5017f5878a92d2acec86a6a29b1498c457cb73a Mon Sep 17 00:00:00 2001 From: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com> Date: Wed, 3 Aug 2016 18:28:24 +0530 Subject: [PATCH v2] net: phy: Add drivers for Microsemi PHYs Signed-off-by: Nagaraju Lakkaraju <Raju.Lakkaraju@microsemi.com> Signed-off-by: David S. Miller <davem@davemloft.net>