Merge "phy: Add support for NXP TJA1100 PHY" (dd74db03) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/net/phy/Kconfig

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		@@ -219,6 +219,12 @@ config QCA8337_SWITCH
		This enables support for the QTI Atheros QCA8337 Ethernet
		switch. This driver support switch funtionality over SGMII
		interface.

		config NXP_TJA110X_PHY
		tristate "Driver for NXP TJA110X PHY"
		help
		Currently supports the TJA110X Ethernet PHYs.

		endif # PHYLIB

		config MICREL_KS8995MA

drivers/net/phy/Makefile

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		@@ -36,3 +36,4 @@ obj-$(CONFIG_MDIO_MOXART) += mdio-moxart.o
		obj-$(CONFIG_AMD_XGBE_PHY) += amd-xgbe-phy.o
		obj-$(CONFIG_MDIO_BCM_UNIMAC) += mdio-bcm-unimac.o
		obj-$(CONFIG_QCA8337_SWITCH) += qca8337.o
		obj-$(CONFIG_NXP_TJA1100_PHY) += nxp/

drivers/net/phy/nxp/Kconfig

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		config NXP_TJA110X_PHY
		tristate "NXP TJA110X PHY support"
		help
		This is the NXP TJA110X PHY driver module

		To compile this driver as a module, choose M here: the
		module will be called nxp.ko.

drivers/net/phy/nxp/Makefile

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		#
		# Makefile for the NXP network device drivers.
		#

		obj-$(CONFIG_NXP_TJA110X_PHY) += nxp.o

drivers/net/phy/nxp/README

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		TJA110X Linux Phy Driver Release v0.1 20170119 - User Notes
		------------------------------------------------------------
		Table of Contents
		1) TJA110X loading
		2) TJA110X configuration management
		3) TJA110X autonomous and managed mode
		4) Limitations and known issues
		-------------------------------------------------------------

		1) TJA110X loading
		Load the kernel module: eg. "insmod nxp.ko"
		For managedMode configuration see 3)

		2) TJA110X configuration management
		sysFS nodes are created in: /sys/bus/mdio_bus/devices/{devName}/configuration

		- cable_test R: execute a cable test and return the result
		W: /

		- led_cfg R: return the current led mode, one of {DISABLED, LINKUP, FRAMEREC, SYMERR, CRSSIG}
		W: set the led mode, with 0=DISABLED, 1=LINKUP, 2=FRAMEREC, 3=SYMERR, 4=CRSSIG

		- link_status R: return the current link status, one of {up, down}
		W: /

		- loopback_cfg R: return the current loopback mode, one of {LOOPBACK_DISABLED, INTERNAL_LOOPBACK, EXTERNAL_LOOPBACK, REMOTE_LOOPBACK}
		W: set the loopback mode, with 0=LOOPBACK_DISABLED, 1=INTERNAL_LOOPBACK, 2=EXTERNAL_LOOPBACK, 3=REMOTE_LOOPBACK

		- master_cfg R: return the current master/slave configuration, one of {master, slave}
		W: set the master/slave configuration, with 0=slave, 1=master

		- power_cfg R: return the current power mode, one of {POWER_MODE_NORMAL, POWER_MODE_SLEEPREQUEST, POWER_MODE_SLEEP, POWER_MODE_SILENT, POWER_MODE_STANDBY, POWER_MODE_NOCHANGE}
		W: initiate a power mode transition, with 0=SUSPEND, 1=RESUME, 2=SLEEPREQUEST, 3=WAKEUP

		- test_mode R: return the current testmode mode, one of {NO_TMODE, TMODE1, TMODE2, TMODE3, TMODE4, TMODE5, TMODE6}
		W: set the testmode, with 0=NO_TMODE, 1=TMODE1, 2=TMODE2, 3=TMODE3, 4=TMODE4, 5=TMODE5, 6=TMODE6

		- wakeup_cfg R: get the current wakeup configuration, one of: fwdphyloc[on/off], remwuphy[on/off], locwuphy[on/off], fwdphyrem[on/off]
		W: set the wakeup configuration: pass a hexadecimal number, the first four bits are interpreted as switches for the four configurable options
		--> TJA1102: all four options are configurable separately
		--> TJA1100: FWDPHYLOC MUST be off
		REMWUPHY MUST be on
		only LOCWUPHY and FWDPHYREM are configurable
		Possible configurations:
		- BOTH enabled (then led MUST be off)
		- BOTH disabled (then led CAN be on)
		all other configurations are invalid.

		Therefore valid values to write to sysfs are:
		- 2 (LOCWUPHY and FWDPHYREM off)
		- E (LOCWUPHY and FWDPHYREM on)

		3) TJA110X autonomous and managed mode
		To choose between managed and autonomous mode, the kernel module parameter "managedMode" shall be used.
		- if managedMode is given a nonzero value(eg. "insmod nxp.ko managedMode=1"), the Phy operates in managed mode
		- if managedMode is set to zero (default value), the phy operates in autonomous mode. In autonomous mode, the following features are not available:
		- cable test
		- loopback modes
		- test modes
		- power modes (ie. the sleep, wakeup, suspend and resume commands)

		4) Limitations and known issues
		- The TJA1100 disables SMI when entering sleep. Once entered it can only be woken up by bus activity or via the WAKE pin