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AM35x has musb interface and uses CPPI4.1 DMA engine.
Current patch supports only PIO mode. DMA support can be
added later once basic CPPI4.1 DMA patch is accepted.
Also added USB_MUSB_AM35X which is required to differentiate musb ips
between OMAP3x and AM35x. This config would be used to for below
purposes,
- Select am35x.c instead of omap2430.c for compilation
at drivers/usb/musb directory. Please note there are
significant differneces in these two files as musb ip
in quite different on AM35x.
Please note that in multi omap configuration only omap2430.c
file will get compiled and we would require to select only
AM35x based board config to compile am35x.c
- Select workaround codes applicable for AM35x musb issues.
one such workaround is for bytewise read issue on AM35x.
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
202 lines
6.4 KiB
Plaintext
202 lines
6.4 KiB
Plaintext
#
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# USB Dual Role (OTG-ready) Controller Drivers
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# for silicon based on Mentor Graphics INVENTRA designs
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#
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comment "Enable Host or Gadget support to see Inventra options"
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depends on !USB && USB_GADGET=n
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# (M)HDRC = (Multipoint) Highspeed Dual-Role Controller
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config USB_MUSB_HDRC
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depends on (USB || USB_GADGET)
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depends on (ARM || (BF54x && !BF544) || (BF52x && !BF522 && !BF523))
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select NOP_USB_XCEIV if (ARCH_DAVINCI || MACH_OMAP3EVM || BLACKFIN)
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select TWL4030_USB if MACH_OMAP_3430SDP
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select USB_OTG_UTILS
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tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)'
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help
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Say Y here if your system has a dual role high speed USB
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controller based on the Mentor Graphics silicon IP. Then
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configure options to match your silicon and the board
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it's being used with, including the USB peripheral role,
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or the USB host role, or both.
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Texas Instruments familiies using this IP include DaVinci
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(35x, 644x ...), OMAP 243x, OMAP 3, and TUSB 6010.
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Analog Devices parts using this IP include Blackfin BF54x,
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BF525 and BF527.
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If you do not know what this is, please say N.
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To compile this driver as a module, choose M here; the
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module will be called "musb_hdrc".
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config USB_MUSB_SOC
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boolean
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depends on USB_MUSB_HDRC
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default y if ARCH_DAVINCI
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default y if ARCH_OMAP2430
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default y if ARCH_OMAP3
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default y if ARCH_OMAP4
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default y if (BF54x && !BF544)
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default y if (BF52x && !BF522 && !BF523)
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comment "DaVinci 35x and 644x USB support"
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depends on USB_MUSB_HDRC && ARCH_DAVINCI_DMx
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comment "DA8xx/OMAP-L1x USB support"
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depends on USB_MUSB_HDRC && ARCH_DAVINCI_DA8XX
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comment "OMAP 243x high speed USB support"
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depends on USB_MUSB_HDRC && ARCH_OMAP2430
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comment "OMAP 343x high speed USB support"
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depends on USB_MUSB_HDRC && ARCH_OMAP3
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comment "OMAP 44xx high speed USB support"
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depends on USB_MUSB_HDRC && ARCH_OMAP4
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comment "Blackfin high speed USB Support"
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depends on USB_MUSB_HDRC && ((BF54x && !BF544) || (BF52x && !BF522 && !BF523))
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config USB_MUSB_AM35X
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bool
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depends on USB_MUSB_HDRC && !ARCH_OMAP2430 && !ARCH_OMAP4
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select NOP_USB_XCEIV
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default MACH_OMAP3517EVM
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help
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Select this option if your platform is based on AM35x. As
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AM35x has an updated MUSB with CPPI4.1 DMA so this config
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is introduced to differentiate musb ip between OMAP3x and
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AM35x platforms.
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config USB_TUSB6010
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boolean "TUSB 6010 support"
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depends on USB_MUSB_HDRC && !USB_MUSB_SOC
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select NOP_USB_XCEIV
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default y
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help
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The TUSB 6010 chip, from Texas Instruments, connects a discrete
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HDRC core using a 16-bit parallel bus (NOR flash style) or VLYNQ
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(a high speed serial link). It can use system-specific external
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DMA controllers.
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choice
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prompt "Driver Mode"
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depends on USB_MUSB_HDRC
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help
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Dual-Role devices can support both host and peripheral roles,
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as well as a the special "OTG Device" role which can switch
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between both roles as needed.
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# use USB_MUSB_HDRC_HCD not USB_MUSB_HOST to #ifdef host side support;
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# OTG needs both roles, not just USB_MUSB_HOST.
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config USB_MUSB_HOST
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depends on USB
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bool "USB Host"
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help
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Say Y here if your system supports the USB host role.
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If it has a USB "A" (rectangular), "Mini-A" (uncommon),
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or "Mini-AB" connector, it supports the host role.
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(With a "Mini-AB" connector, you should enable USB OTG.)
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# use USB_GADGET_MUSB_HDRC not USB_MUSB_PERIPHERAL to #ifdef peripheral
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# side support ... OTG needs both roles
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config USB_MUSB_PERIPHERAL
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depends on USB_GADGET
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bool "USB Peripheral (gadget stack)"
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select USB_GADGET_MUSB_HDRC
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help
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Say Y here if your system supports the USB peripheral role.
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If it has a USB "B" (squarish), "Mini-B", or "Mini-AB"
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connector, it supports the peripheral role.
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(With a "Mini-AB" connector, you should enable USB OTG.)
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config USB_MUSB_OTG
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depends on USB && USB_GADGET && PM && EXPERIMENTAL
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bool "Both host and peripheral: USB OTG (On The Go) Device"
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select USB_GADGET_MUSB_HDRC
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select USB_OTG
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help
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The most notable feature of USB OTG is support for a
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"Dual-Role" device, which can act as either a device
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or a host. The initial role choice can be changed
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later, when two dual-role devices talk to each other.
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At this writing, the OTG support in this driver is incomplete,
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omitting the mandatory HNP or SRP protocols. However, some
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of the cable based role switching works. (That is, grounding
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the ID pin switches the controller to host mode, while leaving
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it floating leaves it in peripheral mode.)
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Select this if your system has a Mini-AB connector, or
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to simplify certain kinds of configuration.
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To implement your OTG Targeted Peripherals List (TPL), enable
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USB_OTG_WHITELIST and update "drivers/usb/core/otg_whitelist.h"
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to match your requirements.
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endchoice
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# enable peripheral support (including with OTG)
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config USB_GADGET_MUSB_HDRC
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bool
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depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
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# default y
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# select USB_GADGET_DUALSPEED
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# select USB_GADGET_SELECTED
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# enables host support (including with OTG)
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config USB_MUSB_HDRC_HCD
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bool
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depends on USB_MUSB_HDRC && (USB_MUSB_HOST || USB_MUSB_OTG)
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select USB_OTG if USB_GADGET_MUSB_HDRC
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default y
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config MUSB_PIO_ONLY
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bool 'Disable DMA (always use PIO)'
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depends on USB_MUSB_HDRC
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default USB_TUSB6010 || ARCH_DAVINCI_DA8XX || USB_MUSB_AM35X
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help
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All data is copied between memory and FIFO by the CPU.
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DMA controllers are ignored.
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Do not select 'n' here unless DMA support for your SOC or board
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is unavailable (or unstable). When DMA is enabled at compile time,
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you can still disable it at run time using the "use_dma=n" module
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parameter.
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config USB_INVENTRA_DMA
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bool
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depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
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default ARCH_OMAP2430 || ARCH_OMAP3 || BLACKFIN || ARCH_OMAP4
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help
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Enable DMA transfers using Mentor's engine.
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config USB_TI_CPPI_DMA
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bool
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depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
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default ARCH_DAVINCI
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help
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Enable DMA transfers when TI CPPI DMA is available.
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config USB_TUSB_OMAP_DMA
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bool
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depends on USB_MUSB_HDRC && !MUSB_PIO_ONLY
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depends on USB_TUSB6010
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depends on ARCH_OMAP
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default y
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help
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Enable DMA transfers on TUSB 6010 when OMAP DMA is available.
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config USB_MUSB_DEBUG
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depends on USB_MUSB_HDRC
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bool "Enable debugging messages"
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default n
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help
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This enables musb debugging. To set the logging level use the debug
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module parameter. Starting at level 3, per-transfer (urb, usb_request,
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packet, or dma transfer) tracing may kick in.
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