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usb: musb: Add support for MediaTek musb controller

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This adds support for MediaTek musb controller in
host, peripheral and otg mode.
There are some quirk of MediaTek musb controller, such as:
 -W1C interrupt status registers
 -Private data toggle registers
 -No dedicated DMA interrupt line

Signed-off-by: Min Guo <min.guo@mediatek.com>
Signed-off-by: Yonglong Wu <yonglong.wu@mediatek.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Link: https://lore.kernel.org/r/20200115132547.364-24-b-liu@ti.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Min Guo
2020-01-15 07:25:45 -06:00
committed by Greg Kroah-Hartman
parent 9c93d7fd46
commit 0990366bab
3 changed files with 591 additions and 1 deletions
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9
drivers/usb/musb/Kconfig
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@@ -115,6 +115,13 @@ config USB_MUSB_JZ4740
depends on USB_MUSB_GADGET
depends on USB=n || USB_OTG_BLACKLIST_HUB
config USB_MUSB_MEDIATEK
tristate "MediaTek platforms"
depends on ARCH_MEDIATEK || COMPILE_TEST
depends on NOP_USB_XCEIV
depends on GENERIC_PHY
select USB_ROLE_SWITCH
config USB_MUSB_AM335X_CHILD
tristate
@@ -141,7 +148,7 @@ config USB_UX500_DMA
config USB_INVENTRA_DMA
bool 'Inventra'
depends on USB_MUSB_OMAP2PLUS
depends on USB_MUSB_OMAP2PLUS || USB_MUSB_MEDIATEK
help
Enable DMA transfers using Mentor's engine.

1
drivers/usb/musb/Makefile
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@@ -24,6 +24,7 @@ obj-$(CONFIG_USB_MUSB_DA8XX) += da8xx.o
obj-$(CONFIG_USB_MUSB_UX500) += ux500.o
obj-$(CONFIG_USB_MUSB_JZ4740) += jz4740.o
obj-$(CONFIG_USB_MUSB_SUNXI) += sunxi.o
obj-$(CONFIG_USB_MUSB_MEDIATEK) += mediatek.o
obj-$(CONFIG_USB_MUSB_AM335X_CHILD) += musb_am335x.o

582
drivers/usb/musb/mediatek.c Normal file
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