mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
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>
54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2008 Extreme Engineering Solutions, Inc.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
|
|
/*
|
|
* Return SYSCLK input frequency - 50 MHz or 66 MHz depending on POR config
|
|
*/
|
|
unsigned long get_board_sys_clk(ulong dummy)
|
|
{
|
|
#if defined(CONFIG_MPC85xx)
|
|
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
|
|
#elif defined(CONFIG_MPC86xx)
|
|
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
|
|
volatile ccsr_gur_t *gur = &immap->im_gur;
|
|
#endif
|
|
|
|
if (in_be32(&gur->gpporcr) & 0x10000)
|
|
return 66666666;
|
|
else
|
|
#ifdef CONFIG_ARCH_P2020
|
|
return 100000000;
|
|
#else
|
|
return 50000000;
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_MPC85xx
|
|
/*
|
|
* Return DDR input clock - synchronous with SYSCLK or 66 MHz
|
|
* Note: 86xx doesn't support asynchronous DDR clk
|
|
*/
|
|
unsigned long get_board_ddr_clk(ulong dummy)
|
|
{
|
|
volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
|
|
u32 ddr_ratio = (in_be32(&gur->porpllsr) & 0x00003e00) >> 9;
|
|
|
|
if (ddr_ratio == 0x7)
|
|
return get_board_sys_clk(dummy);
|
|
|
|
#ifdef CONFIG_ARCH_P2020
|
|
if (in_be32(&gur->gpporcr) & 0x20000)
|
|
return 66666666;
|
|
else
|
|
return 100000000;
|
|
#else
|
|
return 66666666;
|
|
#endif
|
|
}
|
|
#endif
|