i.MX28: Add function to adjust memory parameters
This function can be overridden at run-time and allows implementors of new boards based on the i.MX28 chip to fine-tune the memory params. It is possible to write into the dram_vals array because when the SPL runs, it is located SRAM. Therefore the location is writable. There is no possibility of these data to be read-only. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <festevam@gmail.com>
This commit is contained in:
parent
eeacb73b8e
commit
e3ddc64603
1 changed files with 8 additions and 0 deletions
|
@ -82,10 +82,18 @@ uint32_t dram_vals[] = {
|
||||||
0x00000000, 0x00010001
|
0x00000000, 0x00010001
|
||||||
};
|
};
|
||||||
|
|
||||||
|
void __mx28_adjust_memory_params(uint32_t *dram_vals)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
void mx28_adjust_memory_params(uint32_t *dram_vals)
|
||||||
|
__attribute__((weak, alias("__mx28_adjust_memory_params")));
|
||||||
|
|
||||||
void init_m28_200mhz_ddr2(void)
|
void init_m28_200mhz_ddr2(void)
|
||||||
{
|
{
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
|
mx28_adjust_memory_params(dram_vals);
|
||||||
|
|
||||||
for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
|
for (i = 0; i < ARRAY_SIZE(dram_vals); i++)
|
||||||
writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
|
writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue