blob: 798128b30247c8638b4a14c17f0dcb432c20b4fb (
plain)
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
35
36
37
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011-2015 Panasonic Corporation
* Copyright (C) 2015-2016 Socionext Inc.
* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/io.h>
#include "../init.h"
#include "../sc-regs.h"
void uniphier_pro4_clk_init(void)
{
#ifdef CONFIG_USB_DWC3_UNIPHIER
u32 tmp;
/* deassert reset */
tmp = readl(sc_base + SC_RSTCTRL);
tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_USB3C0 |
SC_RSTCTRL_NRST_GIO;
writel(tmp, sc_base + SC_RSTCTRL);
readl(sc_base + SC_RSTCTRL); /* dummy read */
tmp = readl(sc_base + SC_RSTCTRL2);
tmp |= SC_RSTCTRL2_NRST_USB3B1 | SC_RSTCTRL2_NRST_USB3C1;
writel(tmp, sc_base + SC_RSTCTRL2);
readl(sc_base + SC_RSTCTRL2); /* dummy read */
/* provide clocks */
tmp = readl(sc_base + SC_CLKCTRL);
tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
SC_CLKCTRL_CEN_GIO;
writel(tmp, sc_base + SC_CLKCTRL);
readl(sc_base + SC_CLKCTRL); /* dummy read */
#endif
}
|