powerpc/8xxx: Enable DDR3 RDIMM support
Enabled registered DIMMs using data from SPD. RDIMMs have registers
which need to be configured before using. The register configuration
words are stored in SPD byte 60~116 (JEDEC standard No.21-C). Software
should read those RCWs and put into DDR controller before initialization.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
index 55923e0..be82602 100644
--- a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
+++ b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h
@@ -81,6 +81,9 @@
unsigned int tRTP_ps; /* byte 38, spd->trtp */
unsigned int tDQSQ_max_ps; /* byte 44, spd->tdqsq */
unsigned int tQHS_ps; /* byte 45, spd->tqhs */
+
+ /* DDR3 RDIMM */
+ unsigned char rcw[16]; /* Register Control Word 0-15 */
} dimm_params_t;
extern unsigned int ddr_compute_dimm_parameters(
