1 /*
2  * Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
3  *
4  * SPDX-License-Identifier:	GPL-2.0+
5  */
6 
7 #include <linux/io.h>
8 
9 #include "../init.h"
10 #include "../sc-regs.h"
11 
12 void uniphier_pxs2_clk_init(void)
13 {
14 	u32 tmp;
15 
16 	/* deassert reset */
17 	tmp = readl(SC_RSTCTRL);
18 #ifdef CONFIG_USB_XHCI_UNIPHIER
19 	tmp |= SC_RSTCTRL_NRST_USB3B0 | SC_RSTCTRL_NRST_GIO;
20 #endif
21 #ifdef CONFIG_UNIPHIER_ETH
22 	tmp |= SC_RSTCTRL_NRST_ETHER;
23 #endif
24 #ifdef CONFIG_NAND_DENALI
25 	tmp |= SC_RSTCTRL_NRST_NAND;
26 #endif
27 	writel(tmp, SC_RSTCTRL);
28 	readl(SC_RSTCTRL); /* dummy read */
29 
30 #ifdef CONFIG_USB_XHCI_UNIPHIER
31 	tmp = readl(SC_RSTCTRL2);
32 	tmp |= SC_RSTCTRL2_NRST_USB3B1;
33 	writel(tmp, SC_RSTCTRL2);
34 	readl(SC_RSTCTRL2); /* dummy read */
35 #endif
36 
37 	/* provide clocks */
38 	tmp = readl(SC_CLKCTRL);
39 #ifdef CONFIG_USB_XHCI_UNIPHIER
40 	tmp |= SC_CLKCTRL_CEN_USB31 | SC_CLKCTRL_CEN_USB30 |
41 		SC_CLKCTRL_CEN_GIO;
42 #endif
43 #ifdef CONFIG_UNIPHIER_ETH
44 	tmp |= SC_CLKCTRL_CEN_ETHER;
45 #endif
46 #ifdef CONFIG_NAND_DENALI
47 	tmp |= SC_CLKCTRL_CEN_NAND;
48 #endif
49 	writel(tmp, SC_CLKCTRL);
50 	readl(SC_CLKCTRL); /* dummy read */
51 }
52