diff options
| author | York Sun <yorksun@freescale.com> | 2013-06-25 11:37:47 -0700 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2013-08-09 12:41:39 -0700 |
| commit | b61e06156660579ea6e248abd2506ebdd85e7a14 (patch) | |
| tree | eba0f80c68d9843b7caaa5eb699f756e7f1403b6 /arch/powerpc/include/asm | |
| parent | 5ecf41cc3d69e797ec0ce77c052495d2846a4aaf (diff) | |
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 <yorksun@freescale.com>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/fsl_ddr_dimm_params.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/fsl_ddr_sdram.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h index ffe4db8b8aa..bd312ad5c58 100644 --- a/arch/powerpc/include/asm/fsl_ddr_dimm_params.h +++ b/arch/powerpc/include/asm/fsl_ddr_dimm_params.h @@ -26,6 +26,7 @@ typedef struct dimm_params_s { unsigned int primary_sdram_width; unsigned int ec_sdram_width; unsigned int registered_dimm; + unsigned int device_width; /* x4, x8, x16 components */ /* SDRAM device parameters */ unsigned int n_row_addr; 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; |