1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (C) 2011-2015 Panasonic Corporation 4 * Copyright (C) 2015-2016 Socionext Inc. 5 * Author: Masahiro Yamada <yamada.masahiro (at) socionext.com> 6 */ 7 8 #include <linux/io.h> 9 10 #include "../init.h" 11 #include "../sc-regs.h" 12 13 void uniphier_ld4_clk_init(void) 14 { 15 u32 tmp; 16 17 /* deassert reset */ 18 tmp = readl(SC_RSTCTRL); 19 #ifdef CONFIG_NAND_DENALI 20 tmp |= SC_RSTCTRL_NRST_NAND; 21 #endif 22 writel(tmp, SC_RSTCTRL); 23 readl(SC_RSTCTRL); /* dummy read */ 24 25 /* provide clocks */ 26 tmp = readl(SC_CLKCTRL); 27 #ifdef CONFIG_USB_EHCI_HCD 28 tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC; 29 #endif 30 #ifdef CONFIG_NAND_DENALI 31 tmp |= SC_CLKCTRL_CEN_NAND; 32 #endif 33 writel(tmp, SC_CLKCTRL); 34 readl(SC_CLKCTRL); /* dummy read */ 35 } 36
