u-boot/arch/arm/mach-uniphier/clk/clk-ld11.c
Masahiro Yamada 9c5313dc09 ARM: uniphier: do not run harmful code for USB boot mode of LD11 ES3
The USB boot without the stand-by MPU is available on ES3 or later
of LD11 SoC, but the code in this if-conditional block must not be
run when booting from USB.  Check if the boot device is USB, and
skip the code in the case.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-10-29 17:24:30 +09:00

41 lines
882 B
C

/*
* Copyright (C) 2016 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include "../boot-mode/boot-device.h"
#include "../init.h"
#include "../sc64-regs.h"
#include "../sg-regs.h"
void uniphier_ld11_clk_init(void)
{
/* if booted from a device other than USB, without stand-by MPU */
if ((readl(SG_PINMON0) & BIT(27)) &&
spl_boot_device_raw() != BOOT_DEVICE_USB) {
writel(1, SG_ETPHYPSHUT);
writel(1, SG_ETPHYCNT);
udelay(1); /* wait for regulator level 1.1V -> 2.5V */
writel(3, SG_ETPHYCNT);
writel(3, SG_ETPHYPSHUT);
writel(7, SG_ETPHYCNT);
}
#ifdef CONFIG_USB_EHCI
{
/* FIXME: the current clk driver can not handle parents */
u32 tmp;
tmp = readl(SC_CLKCTRL4);
tmp |= SC_CLKCTRL4_MIO | SC_CLKCTRL4_STDMAC;
writel(tmp, SC_CLKCTRL4);
}
#endif
}