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-rw-r--r--cpu/mpc85xx/ddr-gen3.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/cpu/mpc85xx/ddr-gen3.c b/cpu/mpc85xx/ddr-gen3.c
index e0654bb..a2b45c5 100644
--- a/cpu/mpc85xx/ddr-gen3.c
+++ b/cpu/mpc85xx/ddr-gen3.c
@@ -79,15 +79,18 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
out_be32(&ddr->ddr_sdram_rcw_2, regs->ddr_sdram_rcw_2);
/*
- * 32-bit workaround for DDR2
- * 32_BE
+ * For 8572 DDR1 erratum - DDR controller may enter illegal state
+ * when operatiing in 32-bit bus mode with 4-beat bursts,
+ * This erratum does not affect DDR3 mode, only for DDR2 mode.
*/
+#ifdef CONFIG_MPC8572
if ((((in_be32(&ddr->sdram_cfg) >> 24) & 0x7) == SDRAM_TYPE_DDR2)
- && in_be32(&ddr->sdram_cfg_2) & 0x80000) {
+ && in_be32(&ddr->sdram_cfg) & 0x80000) {
/* set DEBUG_1[31] */
u32 temp = in_be32(&ddr->debug_1);
out_be32(&ddr->debug_1, temp | 1);
}
+#endif
/*
* 200 painful micro-seconds must elapse between