diff options
Diffstat (limited to 'drivers/ddr/fsl/util.c')
| -rw-r--r-- | drivers/ddr/fsl/util.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c index ce55aea1b4..1a49b28f33 100644 --- a/drivers/ddr/fsl/util.c +++ b/drivers/ddr/fsl/util.c @@ -385,3 +385,43 @@ void fsl_ddr_sync_memctl_refresh(unsigned int first_ctrl, ddr_out32(ddrc_debug2_p[i], ddrc_debug2[i]); } #endif /* CONFIG_FSL_DDR_SYNC_REFRESH */ + +void remove_unused_controllers(fsl_ddr_info_t *info) +{ +#ifdef CONFIG_FSL_LSCH3 + int i; + u64 nodeid; + void *hnf_sam_ctrl = (void *)(CCI_HN_F_0_BASE + CCN_HN_F_SAM_CTL); + bool ddr0_used = false; + bool ddr1_used = false; + + for (i = 0; i < 8; i++) { + nodeid = in_le64(hnf_sam_ctrl) & CCN_HN_F_SAM_NODEID_MASK; + if (nodeid == CCN_HN_F_SAM_NODEID_DDR0) { + ddr0_used = true; + } else if (nodeid == CCN_HN_F_SAM_NODEID_DDR1) { + ddr1_used = true; + } else { + printf("Unknown nodeid in HN-F SAM control: 0x%llx\n", + nodeid); + } + hnf_sam_ctrl += (CCI_HN_F_1_BASE - CCI_HN_F_0_BASE); + } + if (!ddr0_used && !ddr1_used) { + printf("Invalid configuration in HN-F SAM control\n"); + return; + } + + if (!ddr0_used && info->first_ctrl == 0) { + info->first_ctrl = 1; + info->num_ctrls = 1; + debug("First DDR controller disabled\n"); + return; + } + + if (!ddr1_used && info->first_ctrl + info->num_ctrls > 1) { + info->num_ctrls = 1; + debug("Second DDR controller disabled\n"); + } +#endif +} |
