diff options
Diffstat (limited to 'plat/imx/common/imx8m/clock.c')
| -rw-r--r-- | plat/imx/common/imx8m/clock.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/plat/imx/common/imx8m/clock.c b/plat/imx/common/imx8m/clock.c index fee68218..86ebd9a9 100644 --- a/plat/imx/common/imx8m/clock.c +++ b/plat/imx/common/imx8m/clock.c @@ -61,3 +61,30 @@ void dram_clock_switch(unsigned int target_freq) ddr_pll_bypass_dis(); } } + +#if defined(PLAT_IMX8M) +void dram_pll_init(unsigned int drate) +{ + /* bypass the PLL */ + mmio_setbits_32(HW_DRAM_PLL_CFG0, 0x30); + + switch (drate) { + case 3200: + mmio_write_32(HW_DRAM_PLL_CFG2, 0x00ece580); + break; + case 1600: + mmio_write_32(HW_DRAM_PLL_CFG2, 0x00ec6984); + break; + case 667: + mmio_write_32(HW_DRAM_PLL_CFG2, 0x00f5a406); + break; + default: + break; + } + + /* bypass the PLL */ + mmio_clrbits_32(HW_DRAM_PLL_CFG0, 0x30); + while(!(mmio_read_32(HW_DRAM_PLL_CFG0) &(1 << 31))) + ; +} +#endif |