mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-10-07 23:02:12 +00:00
198a97a6ab
Split the current clkrst_init() into two functions: - early_clkrst_init(): called from SPL Deassert the reset signals of the memory controller and some other basic cores. - clkrst_init(): called from main U-boot Deassert the reset signals that are necessary for the access to peripherals etc. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
39 lines
783 B
C
39 lines
783 B
C
/*
|
|
* Copyright (C) 2011-2015 Panasonic Corporation
|
|
* Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <asm/io.h>
|
|
#include <mach/sc-regs.h>
|
|
|
|
void clkrst_init(void)
|
|
{
|
|
u32 tmp;
|
|
|
|
/* deassert reset */
|
|
tmp = readl(SC_RSTCTRL);
|
|
#ifdef CONFIG_UNIPHIER_ETH
|
|
tmp |= SC_RSTCTRL_NRST_ETHER;
|
|
#endif
|
|
#ifdef CONFIG_NAND_DENALI
|
|
tmp |= SC_RSTCTRL_NRST_NAND;
|
|
#endif
|
|
writel(tmp, SC_RSTCTRL);
|
|
readl(SC_RSTCTRL); /* dummy read */
|
|
|
|
/* privide clocks */
|
|
tmp = readl(SC_CLKCTRL);
|
|
#ifdef CONFIG_UNIPHIER_ETH
|
|
tmp |= SC_CLKCTRL_CEN_ETHER;
|
|
#endif
|
|
#ifdef CONFIG_USB_EHCI_UNIPHIER
|
|
tmp |= SC_CLKCTRL_CEN_MIO;
|
|
#endif
|
|
#ifdef CONFIG_NAND_DENALI
|
|
tmp |= SC_CLKCTRL_CEN_NAND;
|
|
#endif
|
|
writel(tmp, SC_CLKCTRL);
|
|
readl(SC_CLKCTRL); /* dummy read */
|
|
}
|