Hi,
We have a custom board based on imx7d with DDR2 RAM. The current DDR2 RAM is running at 533 MHz, but the DDR2 only support up to 400MHz.
In the bootloader we select clock source use DRAM_ALT_CLK_ROOT and SYS_PLL_PFD0 and hereby the DDR phy clock is running at 392Mhz.
When the Linux kernel boot, the DRAM clock dead after statement clks[IMX7D_DRAM_ALT_ROOT_CLK] = imx_clk_gate4("dram_alt_root_clk", "dram_alt_post_div", base + 0x4130, 0) in source file clk-imx7d.c.
Looking forward for inputs.
Thanks,
Jakob
Hi,
Hello,
What NXP (Linux) BSP is used in the case?
Regards,
Yuri.
Hi,
It has been decided to use a another memory device. Thank you for replying.
Regards,
Jakob
Hello,
i.MX7D supports DDR3 / DDR3L / LPDDR2 / LPDDR3 memory devices.
DDR2 is not supported.
Regards,
Yuri.