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serial_lpuart: add support for i.MXRT

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Add i.MXRT compatible string and cpu type support to lpuart driver,
to use little endian 32 bits configurations.

Also according to RM, the Receive RX FIFO Enable (RXFE) field in LPUART
FIFO register is bit 3, so this definition should change to 0x08 as done
for i.MX8. It needs also to set baudrate the same way as i.MX8 does.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
This commit is contained in:
Giulio Benetti
2020-01-10 15:51:43 +01:00
committed by Stefano Babic
parent 55631db8bd
commit c32449a161
2 changed files with 13 additions and 5 deletions
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3
include/fsl_lpuart.h
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@@ -4,7 +4,8 @@
*
*/
#if defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8)
#if defined(CONFIG_ARCH_MX7ULP) || defined(CONFIG_ARCH_IMX8) || \
defined(CONFIG_ARCH_IMXRT)
struct lpuart_fsl_reg32 {
u32 verid;
u32 param;