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| author | Badhri Jagan Sridharan <badhri@google.com> | 2020-07-15 20:41:28 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-21 13:38:21 +0200 |
| commit | 6e1c2241f4cecfc21f26f44179d04217c8390338 (patch) | |
| tree | eb49b303b41652a998407215daec75e2a7f62d09 /include/linux/usb | |
| parent | c081ac42fefcf459fc546627ecb78d27235b23fe (diff) | |
| download | lwn-6e1c2241f4cecfc21f26f44179d04217c8390338.tar.gz lwn-6e1c2241f4cecfc21f26f44179d04217c8390338.zip | |
usb: typec: tcpm: Stay in BIST mode till hardreset or unattached
Port starts to toggle when transitioning to unattached state.
This is incorrect while in BIST mode.
6.4.3.1 BIST Carrier Mode
Upon receipt of a BIST Message, with a BIST Carrier Mode BIST Data Object,
the UUT Shall send out a continuous string of BMC encoded alternating "1"s
and “0”s. The UUT Shall exit the Continuous BIST Mode within
tBISTContMode of this Continuous BIST Mode being enabled(see
Section 6.6.7.2).
6.4.3.2 BIST Test Data
Upon receipt of a BIST Message, with a BIST Test Data BIST Data Object,
the UUT Shall return a GoodCRC Message and Shall enter a test mode in which
it sends no further Messages except for GoodCRC Messages in response to
received Messages. See Section 5.9.2 for the definition of the Test Data
Frame. The test Shall be ended by sending Hard Reset Signaling to reset the
UUT.
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200716034128.1251728-3-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/pd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/usb/pd.h b/include/linux/usb/pd.h index a665d7f21142..b6c233e79bd4 100644 --- a/include/linux/usb/pd.h +++ b/include/linux/usb/pd.h @@ -483,4 +483,5 @@ static inline unsigned int rdo_max_power(u32 rdo) #define PD_N_CAPS_COUNT (PD_T_NO_RESPONSE / PD_T_SEND_SOURCE_CAP) #define PD_N_HARD_RESET_COUNT 2 +#define PD_T_BIST_CONT_MODE 50 /* 30 - 60 ms */ #endif /* __LINUX_USB_PD_H */ |