diff options
| author | Maureen Helm <maureen.helm@nxp.com> | 2017-01-18 05:54:58 -0600 |
|---|---|---|
| committer | Kumar Gala <kumar.gala@linaro.org> | 2017-01-30 11:02:35 -0600 |
| commit | e290006144558340a95e6f9215687bab70e71ca3 (patch) | |
| tree | 64d202133846b7a96dffe389a4712ab8d85d85cd /arch | |
| parent | ec5ee8b33d0a5d4d63303b517294a7019870db06 (diff) | |
serial: Introduce new mcux lpuart shim driver
Adds a shim layer around the mcux lpuart driver to adapt it to the Zephyr
serial interface.
NXP has multiple uart hardware blocks that implement different features
and have different register maps. The k64 has a uart block called
'uart', while the kw41 has a uart block called 'lpuart' (low power
uart). The MCUXpresso SDK provides separate drivers for each type of
uart block but with similar software interfaces. As a result, there are
also separate shim drivers in Zephyr. There is a 1:1:1 relationship
between hardware block, mcux driver, and mcux shim driver.
Because we now have two mcux shim drivers for the uart interface, a new
naming convention is created:
<interface>_mcux_<hw block>
Where <interface> is the name of the Zephyr interface, in this case
'uart'. This convention is not new.
<hw block> is the name of the NXP hardware block, in this case 'lpuart'.
This is the new part, and distinguishes different hardware blocks
for the same interface.
Change-Id: I3a80b9bffa116bbb2b02ee950d4bdd79a19a4edc
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/soc/nxp_kinetis/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/soc/nxp_kinetis/Kconfig b/arch/arm/soc/nxp_kinetis/Kconfig index c0b01b56d..f925424b5 100644 --- a/arch/arm/soc/nxp_kinetis/Kconfig +++ b/arch/arm/soc/nxp_kinetis/Kconfig @@ -44,6 +44,12 @@ config HAS_RNGA help Set if the random number generator accelerator (RNGA) module is present in the SoC. +config HAS_LPUART + bool + default n + help + Set if the low power uart (LPUART) module is present in the SoC. + if HAS_OSC choice |