u-boot/arch/arm/cpu/armv7/sunxi/prcm.c
Jelle van der Waa 9d0826879e sunxi: Add support for the I2C controller which is part of the PRCM
Signed-off-by: Jelle van der Waa <jelle@vdwaa.nl>
[hdegoede@redhat.com: Minor cleanups]
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

applied with fixing 2 checkpatch warnings:
WARNING: please, no space before tabs

Signed-off-by: Heiko Schocher <hs@denx.de>
2016-01-21 07:30:01 +01:00

48 lines
1.1 KiB
C

/*
* Sunxi A31 Power Management Unit
*
* (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
* http://linux-sunxi.org
*
* Based on sun6i sources and earlier U-Boot Allwinner A10 SPL work
*
* (C) Copyright 2006-2013
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* Berg Xing <bergxing@allwinnertech.com>
* Tom Cubie <tangliang@allwinnertech.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <asm/io.h>
#include <asm/arch/cpu.h>
#include <asm/arch/prcm.h>
#include <asm/arch/sys_proto.h>
/* APB0 clock gate and reset bit offsets are the same. */
void prcm_apb0_enable(u32 flags)
{
struct sunxi_prcm_reg *prcm =
(struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;
/* open the clock for module */
setbits_le32(&prcm->apb0_gate, flags);
/* deassert reset for module */
setbits_le32(&prcm->apb0_reset, flags);
}
void prcm_apb0_disable(u32 flags)
{
struct sunxi_prcm_reg *prcm =
(struct sunxi_prcm_reg *)SUNXI_PRCM_BASE;
/* assert reset for module */
clrbits_le32(&prcm->apb0_reset, flags);
/* close the clock for module */
clrbits_le32(&prcm->apb0_gate, flags);
}