]> www.infradead.org Git - users/jedix/linux-maple.git/commit
usb: typec: tcpm: delay SNK_TRY_WAIT_DEBOUNCE to SRC_TRYWAIT transition
authorRD Babiera <rdbabiera@google.com>
Tue, 29 Apr 2025 23:47:01 +0000 (23:47 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 1 May 2025 15:41:03 +0000 (17:41 +0200)
commite918d3959b5ae0e793b8f815ce62240e10ba03a4
tree7a417bc58b707a3ea74ccd02d23f2c1a973cc23e
parent054c5145540e5ad5b80adf23a5e3e2fc281fb8aa
usb: typec: tcpm: delay SNK_TRY_WAIT_DEBOUNCE to SRC_TRYWAIT transition

This patch fixes Type-C Compliance Test TD 4.7.6 - Try.SNK DRP Connect
SNKAS.

The compliance tester moves into SNK_UNATTACHED during toggling and
expects the PUT to apply Rp after tPDDebounce of detection. If the port
is in SNK_TRY_WAIT_DEBOUNCE, it will move into SRC_TRYWAIT immediately
and apply Rp. This violates TD 4.7.5.V.3, where the tester confirms that
the PUT attaches Rp after the transitions to Unattached.SNK for
tPDDebounce.

Change the tcpm_set_state delay between SNK_TRY_WAIT_DEBOUNCE and
SRC_TRYWAIT to tPDDebounce.

Fixes: a0a3e04e6b2c ("staging: typec: tcpm: Check for Rp for tPDDebounce")
Cc: stable <stable@kernel.org>
Signed-off-by: RD Babiera <rdbabiera@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20250429234703.3748506-2-rdbabiera@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/typec/tcpm/tcpm.c