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Subject[PATCH 11/12] n_tracerouter and n_tracesink Kconfig.
From: J Freyensee <>

This patch allows n_tracerouter and n_tracesink ldisc drivers
to be configured in menuconfig.

Signed-off-by: J Freyensee <>
drivers/char/Kconfig | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 43d3395..02b9be2 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -289,6 +289,38 @@ config N_GSM
This line discipline provides support for the GSM MUX protocol and
presents the mux as a set of 61 individual tty devices.

+ tristate "Trace data router for MIPI P1149.7 cJTAG standard"
+ depends on TRACE_SINK
+ default Y
+ ---help---
+ The trace router uses the Linux tty line discipline framework to
+ route trace data coming from a tty port (say UART for example) to
+ the trace sink line discipline driver and to another tty port(say USB).
+ This is part of a solution for the MIPI P1149.7, compact JTAG,
+ standard, which is for debugging mobile devices. The PTI driver in
+ drivers/misc/pti.c defines the majority of this MIPI solution.
+ You should select this driver if the target kernel is meant for
+ a mobile device containing a modem. Then you will need to select
+ "Trace data sink for MIPI P1149.7 cJTAG standard" line discipline
+ driver.
+config TRACE_SINK
+ tristate "Trace data sink for MIPI P1149.7 cJTAG standard"
+ default Y
+ ---help---
+ The trace sink uses the Linux line discipline framework to receive
+ trace data coming from the trace router line discipline driver
+ to a user-defined tty port target, like USB.
+ This is to provide a way to extract modem trace data on
+ devices that do not have a PTI HW module, or just need modem
+ trace data to come out of a different HW output port.
+ This is part of a solution for the P1149.7, compact JTAG, standard.
+ If you select this option, you need to select
+ "Trace data router for MIPI P1149.7 cJTAG standard".
config RISCOM8
tristate "SDL RISCom/8 card support"

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