u-boot/arch/arm/mach-zynq/clk.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

105 lines
2.2 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2013 Soren Brinkmann <soren.brinkmann@xilinx.com>
* Copyright (C) 2013 Xilinx, Inc. All rights reserved.
*/
#include <clk.h>
#include <common.h>
#include <dm.h>
#include <asm/arch/clk.h>
DECLARE_GLOBAL_DATA_PTR;
static const char * const clk_names[clk_max] = {
"armpll", "ddrpll", "iopll",
"cpu_6or4x", "cpu_3or2x", "cpu_2x", "cpu_1x",
"ddr2x", "ddr3x", "dci",
"lqspi", "smc", "pcap", "gem0", "gem1",
"fclk0", "fclk1", "fclk2", "fclk3", "can0", "can1",
"sdio0", "sdio1", "uart0", "uart1", "spi0", "spi1", "dma",
"usb0_aper", "usb1_aper", "gem0_aper", "gem1_aper",
"sdio0_aper", "sdio1_aper", "spi0_aper", "spi1_aper",
"can0_aper", "can1_aper", "i2c0_aper", "i2c1_aper",
"uart0_aper", "uart1_aper", "gpio_aper", "lqspi_aper",
"smc_aper", "swdt", "dbg_trc", "dbg_apb"
};
/**
* set_cpu_clk_info() - Setup clock information
*
* This function is called from common code after relocation and sets up the
* clock information.
*/
int set_cpu_clk_info(void)
{
struct clk clk;
struct udevice *dev;
ulong rate;
int i, ret;
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_GET_DRIVER(zynq_clk), &dev);
if (ret)
return ret;
for (i = 0; i < 2; i++) {
clk.id = i ? ddr3x_clk : cpu_6or4x_clk;
ret = clk_request(dev, &clk);
if (ret < 0)
return ret;
rate = clk_get_rate(&clk) / 1000000;
if (i)
gd->bd->bi_ddr_freq = rate;
else
gd->bd->bi_arm_freq = rate;
clk_free(&clk);
}
gd->bd->bi_dsp_freq = 0;
return 0;
}
/**
* soc_clk_dump() - Print clock frequencies
* Returns zero on success
*
* Implementation for the clk dump command.
*/
int soc_clk_dump(void)
{
struct udevice *dev;
int i, ret;
ret = uclass_get_device_by_driver(UCLASS_CLK,
DM_GET_DRIVER(zynq_clk), &dev);
if (ret)
return ret;
printf("clk\t\tfrequency\n");
for (i = 0; i < clk_max; i++) {
const char *name = clk_names[i];
if (name) {
struct clk clk;
unsigned long rate;
clk.id = i;
ret = clk_request(dev, &clk);
if (ret < 0)
return ret;
rate = clk_get_rate(&clk);
clk_free(&clk);
if ((rate == (unsigned long)-ENOSYS) ||
(rate == (unsigned long)-ENXIO))
printf("%10s%20s\n", name, "unknown");
else
printf("%10s%20lu\n", name, rate);
}
}
return 0;
}