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The loopback test mode is not implemented in all NS16550 compatible UARTs. The 8250 driver uses the UPF_SKIP_TEST flag to indicate this, however it is not possible to set this flag via device-tree. Add a new 'no-loopback-test' property, and modify the of_serial driver to set the UPF_SKIP_TEST flag if the property is present. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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atmel-usart.txt | ||
efm32-uart.txt | ||
fsl-imx-uart.txt | ||
msm_serial.txt | ||
nxp-lpc32xx-hsuart.txt | ||
of-serial.txt | ||
snps-dw-apb-uart.txt |