From d6b98c8d242aee40e7b8919dd07b593b0739e38d Mon Sep 17 00:00:00 2001 From: Karol Kolacinski Date: Fri, 24 Jun 2022 17:22:03 +0200 Subject: ice: add write functionality for GNSS TTY Add the possibility to write raw bytes to the GNSS module through the first TTY device. This allows user to configure the module. Create a second read-only TTY device. Signed-off-by: Karol Kolacinski Tested-by: Gurucharan (A Contingent worker at Intel) Signed-off-by: Tony Nguyen --- Documentation/networking/device_drivers/ethernet/intel/ice.rst | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'Documentation/networking') diff --git a/Documentation/networking/device_drivers/ethernet/intel/ice.rst b/Documentation/networking/device_drivers/ethernet/intel/ice.rst index 67b7a701ce9e..dc2e60ced927 100644 --- a/Documentation/networking/device_drivers/ethernet/intel/ice.rst +++ b/Documentation/networking/device_drivers/ethernet/intel/ice.rst @@ -901,6 +901,15 @@ To enable/disable UDP Segmentation Offload, issue the following command:: # ethtool -K tx-udp-segmentation [off|on] +GNSS module +----------- +Allows user to read messages from the GNSS module and write supported commands. +If the module is physically present, driver creates 2 TTYs for each supported +device in /dev, ttyGNSS_:_0 and _1. First one (_0) is RW and +the second one is RO. +The protocol of write commands is dependent on the GNSS module as the driver +writes raw bytes from the TTY to the GNSS i2c. Please refer to the module +documentation for details. Performance Optimization ======================== -- cgit v1.2.3