From 9b5dbe135887cf0853c175780f5b16b3fd0974a4 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Mon, 18 Jan 2016 11:55:44 +0100 Subject: x86: baytrail: Add documentation for FSP memory-down values This patch adds the documentation for the memory-down parameters of the Intel FSP. To configure a board without SPD DDR DIMM but with onboard DDR chips. The values are taken from the coreboot header: src/soc/intel/fsp_baytrail/chip.h (git ID da1a70ea from 2016-01-16 as reference). Signed-off-by: Stefan Roese Cc: Andrew Bradford Cc: Bin Meng Cc: Simon Glass Reviewed-by: Bin Meng --- .../misc/intel,baytrail-fsp.txt | 31 +++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'doc') diff --git a/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt b/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt index b44b5b5..07fa46e 100644 --- a/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt +++ b/doc/device-tree-bindings/misc/intel,baytrail-fsp.txt @@ -74,12 +74,41 @@ discovered by the FSP and used to setup main memory. # Integer properties: - - fsp,dram-speed + - fsp,dram-speed: + 0x0: "800 MHz" + 0x1: "1066 MHz" + 0x2: "1333 MHz" + 0x3: "1600 MHz" + - fsp,dram-type + 0x0: "DDR3" + 0x1: "DDR3L" + 0x2: "DDR3U" + 0x4: "LPDDR2" + 0x5: "LPDDR3" + 0x6: "DDR4" + - fsp,dimm-width + 0x0: "x8" + 0x1: "x16" + 0x2: "x32" + - fsp,dimm-density + 0x0: "1 Gbit" + 0x1: "2 Gbit" + 0x2: "4 Gbit" + 0x3: "8 Gbit" + - fsp,dimm-bus-width + 0x0: "8 bits" + 0x1: "16 bits" + 0x2: "32 bits" + 0x3: "64 bits" + - fsp,dimm-sides + 0x0: "1 rank" + 0x1: "2 ranks" + - fsp,dimm-tcl - fsp,dimm-trpt-rcd - fsp,dimm-twr -- cgit v1.1