brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00
Code Issues Projects Releases Wiki Activity

arm: mx5: Add LDB clock config code

Browse Source 
Add code to configure PLL4, from which the LDB clock are directly
derived.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Marek Vasut 2018-10-10 10:40:02 +02:00 committed by Stefano Babic
parent 0b6b8a3a19
commit ed85f77190
2 changed files with 30 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/include/asm/arch-mx5/clock.h
View File

@ -38,6 +38,7 @@ enum mxc_clock {
MXC_NFC_CLK,
MXC_PERIPH_CLK,
MXC_I2C_CLK,
MXC_LDB_CLK,
};
u32 imx_get_uartclk(void);

29
arch/arm/mach-imx/mx5/clock.c
View File

@ -838,6 +838,31 @@ static int config_ddr_clk(u32 emi_clk)
return 0;
}
#ifdef CONFIG_MX53
static int config_ldb_clk(u32 ref, u32 freq)
{
int ret = 0;
struct pll_param pll_param;
memset(&pll_param, 0, sizeof(struct pll_param));
ret = calc_pll_params(ref, freq, &pll_param);
if (ret != 0) {
printf("Error:Can't find pll parameters: %d\n",
ret);
return ret;
}
return config_pll_clk(PLL4_CLOCK, &pll_param);
}
#else
static int config_ldb_clk(u32 ref, u32 freq)
{
/* Platform not supported */
return -EINVAL;
}
#endif
/*
* This function assumes the expected core clock has to be changed by
* modifying the PLL. This is NOT true always but for most of the times,
@ -879,6 +904,10 @@ int mxc_set_clock(u32 ref, u32 freq, enum mxc_clock clk)
if (config_nfc_clk(freq))
return -EINVAL;
break;
case MXC_LDB_CLK:
if (config_ldb_clk(ref, freq))
return -EINVAL;
break;
default:
printf("Warning:Unsupported or invalid clock type\n");
}