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serial: s5p: Add Apple M1 support

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Apple M1 SoCs include an S5L UART which is a variant of the S5P
UART.  Add support for this variant and enable it by default
on Apple SoCs.

Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Mark Kettenis
2021-10-23 16:58:04 +02:00
committed by Tom Rini
parent 003b657edc
commit d520e1fb72
5 changed files with 130 additions and 24 deletions
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41
arch/arm/include/asm/arch-m1/uart.h Normal file
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Copyright 2009 Samsung Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Heungjun Kim <riverful.kim@samsung.com>
*/
#ifndef __ASM_ARCH_UART_H_
#define __ASM_ARCH_UART_H_
#ifndef __ASSEMBLY__
/* baudrate rest value */
union br_rest {
unsigned short slot; /* udivslot */
unsigned char value; /* ufracval */
};
struct s5p_uart {
unsigned int ulcon;
unsigned int ucon;
unsigned int ufcon;
unsigned int umcon;
unsigned int utrstat;
unsigned int uerstat;
unsigned int ufstat;
unsigned int umstat;
unsigned int utxh;
unsigned int urxh;
unsigned int ubrdiv;
union br_rest rest;
unsigned char res3[0x3fd0];
};
static inline int s5p_uart_divslot(void)
{
return 0;
}
#endif /* __ASSEMBLY__ */
#endif