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authorKarol Kolacinski <karol.kolacinski@intel.com>2022-06-24 17:22:03 +0200
committerTony Nguyen <anthony.l.nguyen@intel.com>2022-07-21 13:25:17 -0700
commitd6b98c8d242aee40e7b8919dd07b593b0739e38d (patch)
tree7447ac1d17185cea30a6c4dd7e5a10db714527cb /Documentation/networking
parentice: add i2c write command (diff)
downloadlinux-dev-d6b98c8d242aee40e7b8919dd07b593b0739e38d.tar.xz
linux-dev-d6b98c8d242aee40e7b8919dd07b593b0739e38d.zip
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 <karol.kolacinski@intel.com> Tested-by: Gurucharan <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/device_drivers/ethernet/intel/ice.rst9
1 files changed, 9 insertions, 0 deletions
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 <ethX> 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_<device>:<function>_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
========================