u-boot/arch/arm/mach-sunxi/clock.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

70 lines
1.5 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2007-2012
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* Tom Cubie <tangliang@allwinnertech.com>
*
* (C) Copyright 2013 Luke Kenneth Casson Leighton <lkcl@lkcl.net>
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/gpio.h>
#include <asm/arch/prcm.h>
#include <asm/arch/gtbus.h>
#include <asm/arch/sys_proto.h>
__weak void clock_init_sec(void)
{
}
__weak void gtbus_init(void)
{
}
int clock_init(void)
{
#ifdef CONFIG_SPL_BUILD
clock_init_safe();
gtbus_init();
#endif
clock_init_uart();
clock_init_sec();
return 0;
}
/* These functions are shared between various SoCs so put them here. */
#if defined CONFIG_SUNXI_GEN_SUN6I && !defined CONFIG_MACH_SUN9I
int clock_twi_onoff(int port, int state)
{
struct sunxi_ccm_reg *const ccm =
(struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
if (port == 5) {
if (state)
prcm_apb0_enable(
PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
else
prcm_apb0_disable(
PRCM_APB0_GATE_PIO | PRCM_APB0_GATE_I2C);
return 0;
}
/* set the apb clock gate and reset for twi */
if (state) {
setbits_le32(&ccm->apb2_gate,
CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
setbits_le32(&ccm->apb2_reset_cfg,
1 << (APB2_RESET_TWI_SHIFT + port));
} else {
clrbits_le32(&ccm->apb2_reset_cfg,
1 << (APB2_RESET_TWI_SHIFT + port));
clrbits_le32(&ccm->apb2_gate,
CLK_GATE_OPEN << (APB2_GATE_TWI_SHIFT + port));
}
return 0;
}
#endif