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driver: host_uart: Add host-uart device in npcx.

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In order to prevent user turns on the pin-mux of devices has io-pads
unexpectedly, this CL added a new device definition for host uart
device. The pin-mux of host uart interface is enabled only if we set its
status as "okay" in dts file of board folder.

The following npcx7 drivers will meet:
1. Default status property of npcx devices with io-pads such as espi,
   pwm, uart, host uart and so on should be "disabled".
2. Switch pin-mux by changing status property to "okay" in dts file of
   board folder.

Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
This commit is contained in:
Mulin Chao 2020-12-06 23:48:03 -08:00 • committed by Anas Nashif
commit c45e7f3c96
4 changed files with 25 additions and 14 deletions
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3
drivers/espi/Kconfig.npcx
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@ -25,7 +25,4 @@ config ESPI_PERIPHERAL_HOST_IO
config ESPI_PERIPHERAL_DEBUG_PORT_80
default y
config ESPI_PERIPHERAL_UART
default y
endif #ESPI_NPCX