1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2016 Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <config.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include "../sc64-regs.h"
#include "../sg-regs.h"
#include "debug-uart.h"
#define UNIPHIER_LD20_UART_CLK 58820000
unsigned int uniphier_ld20_debug_uart_init(void)
{
u32 tmp;
sg_set_iectrl(54); /* TXD0 */
sg_set_iectrl(58); /* TXD1 */
sg_set_iectrl(90); /* TXD2 */
sg_set_iectrl(94); /* TXD3 */
sg_set_pinsel(54, 0, 8, 4); /* TXD0 -> TXD0 */
sg_set_pinsel(58, 1, 8, 4); /* SPITXD1 -> TXD1 */
sg_set_pinsel(90, 1, 8, 4); /* PC0WE -> TXD2 */
sg_set_pinsel(94, 1, 8, 4); /* PCD00 -> TXD3 */
tmp = readl(SC_CLKCTRL4);
tmp |= SC_CLKCTRL4_PERI;
writel(tmp, SC_CLKCTRL4);
return DIV_ROUND_CLOSEST(UNIPHIER_LD20_UART_CLK, 16 * CONFIG_BAUDRATE);
}
|
