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iot_dk: Save CPU clock value to gd->cpu_clk

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Since gd->cpu_clk is a global item we may once populate it from .dtb
ans use it then in other places like for printing CPU info etc.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
This commit is contained in:
Alexey Brodkin 2018-10-10 16:15:20 +03:00
parent 031154fe8f
commit 8a8f32d8ff
1 changed files with 8 additions and 6 deletions
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14
board/synopsys/iot_devkit/iot_devkit.c
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@ -108,7 +108,7 @@ extern u8 __ram_end[];
*/
int mach_cpu_init(void)
{
int offset, freq;
int offset;
/* Don't relocate U-Boot */
gd->flags |= GD_FLG_SKIP_RELOC;
@ -129,12 +129,12 @@ int mach_cpu_init(void)
if (offset < 0)
return offset;
freq = fdtdec_get_int(gd->fdt_blob, offset, "clock-frequency", 0);
if (!freq)
gd->cpu_clk = fdtdec_get_int(gd->fdt_blob, offset, "clock-frequency", 0);
if (!gd->cpu_clk)
return -EINVAL;
/* If CPU freq > 100 MHz, divide eFLASH clock by 2 */
if (freq > 100000000) {
if (gd->cpu_clk > 100000000) {
u32 reg = readl(AHBCKDIV);
reg &= ~(0xF << 8);
@ -142,7 +142,7 @@ int mach_cpu_init(void)
writel(reg, AHBCKDIV);
}
return set_cpu_freq(freq);
return set_cpu_freq(gd->cpu_clk);
}
#define ARC_PERIPHERAL_BASE 0xF0000000
@ -186,7 +186,9 @@ int checkboard(void)
#ifdef CONFIG_DISPLAY_CPUINFO
int print_cpuinfo(void)
{
printf("CPU: ARC EM9D\n");
char mhz[8];
printf("CPU: ARC EM9D at %s MHz\n", strmhz(mhz, gd->cpu_clk));
return 0;
}
#endif /* CONFIG_DISPLAY_CPUINFO */