From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- arch/m68k/include/asm/serial.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 arch/m68k/include/asm/serial.h (limited to 'arch/m68k/include/asm/serial.h') diff --git a/arch/m68k/include/asm/serial.h b/arch/m68k/include/asm/serial.h new file mode 100644 index 000000000..3f76bc7b9 --- /dev/null +++ b/arch/m68k/include/asm/serial.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * include/asm-m68k/serial.h + * + * currently this seems useful only for a Q40, + * it's an almost exact copy of ../asm-alpha/serial.h + * + */ + + +/* + * This assumes you have a 1.8432 MHz clock for your UART. + * + * It'd be nice if someone built a serial card with a 24.576 MHz + * clock, since the 16550A is capable of handling a top speed of 1.5 + * megabits/second; but this requires the faster clock. + */ +#define BASE_BAUD ( 1843200 / 16 ) + +/* Standard COM flags (except for COM4, because of the 8514 problem) */ +#ifdef CONFIG_SERIAL_8250_DETECT_IRQ +#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) +#define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) +#else +#define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) +#define STD_COM4_FLAGS UPF_BOOT_AUTOCONF +#endif + +#ifdef CONFIG_ISA +#define SERIAL_PORT_DFNS \ + /* UART CLK PORT IRQ FLAGS */ \ + { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS }, /* ttyS0 */ \ + { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS }, /* ttyS1 */ \ + { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS }, /* ttyS2 */ \ + { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ +#endif -- cgit v1.2.3