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arm: sama5: sam_serial: fix to compile with "UART Flow control enabled" on SAMA5D2.

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SAMA5D2 has UART (TX/RX only) and FLEXCOM USART (with control pins).
UART has only TX/RX, so if I try to use flow control with FLEXCOM USART,
there is no register definition on the UART side and get a compilation error.

Signed-off-by: Takeyoshi Kikuchi <kikuchi@centurysys.co.jp>
This commit is contained in:
Takeyoshi Kikuchi 2024-01-26 09:17:33 +09:00 • committed by archer
parent addfa1c030
commit 8571893435
1 changed files with 2 additions and 0 deletions
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2
arch/arm/src/sama5/sam_serial.c
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@ -1019,6 +1019,7 @@ static int up_setup(struct uart_dev_s *dev)
up_shutdown(dev);
#if defined(CONFIG_SERIAL_IFLOWCONTROL) || defined(CONFIG_SERIAL_OFLOWCONTROL)
#if defined(ATSAMA5D3) || defined(ATSAMA5D4)
/* Setting the USART to operate with hardware handshaking is performed by
* writing the USART_MODE field in the Mode Register (US_MR) to the value
* 0x2. ... Using this mode requires using the PDC or DMAC channel for
@ -1032,6 +1033,7 @@ static int up_setup(struct uart_dev_s *dev)
regval = (UART_MR_MODE_HWHS | SAM_MR_USCLKS | UART_MR_CHMODE_NORMAL);
}
else
#endif
#endif
{
#if defined(ATSAMA5D2)