u-boot/arch/arm/mach-uniphier/clk/clk-pxs2.c
Masahiro Yamada 5bacb4402e ARM: uniphier: remove adhoc reset deassertion for the NAND controller
Now that the reset controlling of the Denali NAND driver (denali_dt.c)
works for this platform, remove the adhoc reset deassert code.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-02-01 01:14:32 +09:00

39 lines
976 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2015 Masahiro Yamada <yamada.masahiro@socionext.com>
*/
#include <linux/bitops.h>
#include <linux/io.h>
#include "../init.h"
#include "../sc-regs.h"
void uniphier_pxs2_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_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;
writel(tmp, sc_base + SC_RSTCTRL2);
readl(sc_base + SC_RSTCTRL2); /* dummy read */
tmp = readl(sc_base + SC_RSTCTRL6);
tmp |= 0x37;
writel(tmp, sc_base + SC_RSTCTRL6);
/* provide clocks */
tmp = readl(sc_base + SC_CLKCTRL);
tmp |= BIT(20) | BIT(19) | 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
}