diff options
| author | York Sun <yorksun@freescale.com> | 2014-05-23 13:15:00 -0700 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2014-06-05 13:45:07 -0700 |
| commit | 9855b3beca648dabe4d86b06d36bf219ebd0732d (patch) | |
| tree | c0a02085628640beec9e0d69f31af84f00eabb8e /drivers/ddr | |
| parent | aaee5230f135bbfbe7abe6388cd04931f322db68 (diff) | |
powerpc/mpc85xx: Add workaround for DDR erratum A004508
When the DDR controller is initialized below a junction temperature of
0°C and then operated above a junction temperature of 65°C, the DDR
controller may cause receive data errors, resulting ECC errors and/or
corrupted data. This erratum applies to the following SoCs and their
variants: MPC8536, MPC8569, MPC8572, P1010, P1020, P1021, P1022, P1023,
P2020.
Signed-off-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers/ddr')
| -rw-r--r-- | drivers/ddr/fsl/ctrl_regs.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c index 78e82bba3d..dcf6287f66 100644 --- a/drivers/ddr/fsl/ctrl_regs.c +++ b/drivers/ddr/fsl/ctrl_regs.c @@ -2304,5 +2304,10 @@ compute_fsl_memctl_config_regs(const memctl_options_t *popts, ddr->debug[2] = 0x00000400; ddr->debug[4] = 0xff800000; #endif +#ifdef CONFIG_SYS_FSL_ERRATUM_A004508 + if ((ip_rev >= 0x40000) && (ip_rev < 0x40400)) + ddr->debug[2] |= 0x00000200; /* set bit 22 */ +#endif + return check_fsl_memctl_config_regs(ddr); } |