diff options
| author | Thierry Reding <treding@nvidia.com> | 2019-01-23 11:28:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-30 09:31:31 +0100 |
| commit | 2d908b38d40921a03225d42fd6e48eb51bffd606 (patch) | |
| tree | b85e2ac483f12355e227afeb782282e61aacc6d0 /include | |
| parent | dt-bindings: serial: Add bindings for nvidia,tegra194-tcu (diff) | |
| download | linux-2d908b38d40921a03225d42fd6e48eb51bffd606.tar.xz linux-2d908b38d40921a03225d42fd6e48eb51bffd606.zip | |
serial: Add Tegra Combined UART driver
The Tegra Combined UART (TCU) is a mailbox-based mechanism that allows
multiplexing multiple "virtual UARTs" into a single hardware serial
port. The TCU is the primary serial port on Tegra194 devices.
Add a TCU driver utilizing the mailbox framework, as the used mailboxes
are part of Tegra HSP blocks that are already controlled by the Tegra
HSP mailbox driver.
Based on work by Mikko Perttunen <mperttunen@nvidia.com>.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/serial_core.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h index df4a7534e239..6009ee2c2e99 100644 --- a/include/uapi/linux/serial_core.h +++ b/include/uapi/linux/serial_core.h @@ -79,6 +79,9 @@ /* Nuvoton UART */ #define PORT_NPCM 40 +/* NVIDIA Tegra Combined UART */ +#define PORT_TEGRA_TCU 41 + /* Intel EG20 */ #define PORT_PCH_8LINE 44 #define PORT_PCH_2LINE 45 |