Subject: [PATCH v3 0/5] Add support for SW babble Control
Series add support for SW babble control logic found in
new silicon versions of AM335x. Runtime differentiation of
silicon version is done by checking the BABBLE_CTL register.
For newer silicon the register default value read is 0x4 and
for older versions its 0x0.
Patch 1 -> Handle Babble only if MUSB is in HOST mode
Patch 2 -> Convert recover work to delayed work.
Patch 3 -> usb_phy_vbus_(off/_on) are NOPs for am335x PHY
so use usb_phy(_shutdown/_init) in musb_platform_reset()
Patch 4 -> Add return value for musb_platform_reset() in prepration
to support SW babble_ctrl
Patch 5 -> Add the sw_babble_control()
Patch 6 -> Enable sw babble control for newer silicon
v3 -> v4 : Fixes an issue in gagdet mode - BUS RESET should not
be handled as a BABBLE. Added a check for the same.(Patch #1)
Enable sw babble control properly (Patch #6)
v2 -> v3 : Modify musb_platform_reset() to return zero on success.
George Cherian (6):
usb: musb: core: Handle Babble condition only in HOST mode
usb: musb: core: Convert babble recover work to delayed work
usb: musb: dsps: Call usb_phy(_shutdown/_init) during
musb_platform_reset()
usb: musb: core: Convert the musb_platform_reset to have a return
value.
usb: musb: dsps: Add the sw_babble_control()
usb: musb: dsps: Enable sw babble control for newer silicon
drivers/usb/musb/musb_core.c | 51 ++++++++++++++------------
drivers/usb/musb/musb_core.h | 12 ++++---
drivers/usb/musb/musb_dsps.c | 86 ++++++++++++++++++++++++++++++++++++++++++--
drivers/usb/musb/musb_regs.h | 7 ++++
4 files changed, 125 insertions(+), 31 deletions(-)
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1.8.3.1
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