mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-03-17 23:37:01 +00:00
Disable unused chip-select for DDR controller interleaving
When DDR controller interleaving is eabled and less than all bank (chip-select) interleaving is seletected, the unused chip-select should be disabled. Signed-off-by: York Sun <yorksun@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
parent
28a966715b
commit
58edbc9caa
1 changed files with 14 additions and 3 deletions
|
@ -1184,6 +1184,7 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
|
|||
unsigned int sr_it;
|
||||
unsigned int zq_en;
|
||||
unsigned int wrlvl_en;
|
||||
int cs_en = 1;
|
||||
|
||||
memset(ddr, 0, sizeof(fsl_ddr_cfg_regs_t));
|
||||
|
||||
|
@ -1250,16 +1251,23 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
|
|||
* and each controller uses rank interleaving within
|
||||
* itself. Therefore the starting and ending address
|
||||
* on each controller is twice the amount present on
|
||||
* each controller.
|
||||
* each controller. If any CS is not included in the
|
||||
* interleaving, the memory on that CS is not accssible
|
||||
* and the total memory size is reduced. The CS is also
|
||||
* disabled.
|
||||
*/
|
||||
unsigned long long ctlr_density = 0;
|
||||
switch (popts->ba_intlv_ctl & FSL_DDR_CS0_CS1_CS2_CS3) {
|
||||
case FSL_DDR_CS0_CS1:
|
||||
case FSL_DDR_CS0_CS1_AND_CS2_CS3:
|
||||
ctlr_density = dimm_params[0].rank_density * 2;
|
||||
if (i > 1)
|
||||
cs_en = 0;
|
||||
break;
|
||||
case FSL_DDR_CS2_CS3:
|
||||
ctlr_density = dimm_params[0].rank_density;
|
||||
if (i > 0)
|
||||
cs_en = 0;
|
||||
break;
|
||||
case FSL_DDR_CS0_CS1_CS2_CS3:
|
||||
/*
|
||||
|
@ -1379,8 +1387,11 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts,
|
|||
);
|
||||
|
||||
debug("FSLDDR: cs[%d]_bnds = 0x%08x\n", i, ddr->cs[i].bnds);
|
||||
set_csn_config(dimm_number, i, ddr, popts, dimm_params);
|
||||
set_csn_config_2(i, ddr);
|
||||
if (cs_en) {
|
||||
set_csn_config(dimm_number, i, ddr, popts, dimm_params);
|
||||
set_csn_config_2(i, ddr);
|
||||
} else
|
||||
printf("CS%d is disabled.\n", i);
|
||||
}
|
||||
|
||||
set_ddr_eor(ddr, popts);
|
||||
|
|
Loading…
Add table
Reference in a new issue