From b61e06156660579ea6e248abd2506ebdd85e7a14 Mon Sep 17 00:00:00 2001 From: York Sun Date: Tue, 25 Jun 2013 11:37:47 -0700 Subject: powerpc/mpc8xxx: Add x4 DDR device support On selected platforms, x4 DDR devices can be supported. Using x4 devices may lower the performance, but generally they are available for higher density. Tested on MT36JSF2G72PZ-1G9E1 RDIMM. Signed-off-by: York Sun --- arch/powerpc/include/asm/fsl_ddr_sdram.h | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/include/asm/fsl_ddr_sdram.h') diff --git a/arch/powerpc/include/asm/fsl_ddr_sdram.h b/arch/powerpc/include/asm/fsl_ddr_sdram.h index 640d3297d6c..bac22fcd1d0 100644 --- a/arch/powerpc/include/asm/fsl_ddr_sdram.h +++ b/arch/powerpc/include/asm/fsl_ddr_sdram.h @@ -277,6 +277,7 @@ typedef struct memctl_options_s { unsigned int mirrored_dimm; unsigned int quad_rank_present; unsigned int ap_en; /* address parity enable for RDIMM */ + unsigned int x4_en; /* enable x4 devices */ /* Global Timing Parameters */ unsigned int cas_latency_override; -- cgit v1.2.3