From ff9ab7c2e48657fb35a465fe5c681ad3efaf8289 Mon Sep 17 00:00:00 2001 From: Matt Sealey Date: Wed, 22 Aug 2012 09:25:39 +0000 Subject: efikamx: remove drive strength function and roll its functionality into the DCD Efika MX boards configure their DDR pad settings twice, one in the DCD generated from imximage_*.cfg and again in init_drive_strength called before relocation. Rather than doing this, roll the changes it makes into the DCD so DDR is set up before a single line of code in U-Boot is run. The settings are identical with this DCD block which is shorter (by 7 entries) than the old one, and after the output of init_drive_strength since a lot of the functionality in the existing DCD and init_drive_strength function was just setting the POR defaults. This goes to explain some now-missing entries. Several hundred rounds of mtest have been run to test the settings before and after to confirm DDR is stable and no ill-effects have been found. Signed-off-by: Matt Sealey Acked-by: Stefano Babic --- board/genesi/mx51_efikamx/imximage_mx.cfg | 42 +++++++++++++------------------ 1 file changed, 18 insertions(+), 24 deletions(-) (limited to 'board/genesi/mx51_efikamx/imximage_mx.cfg') diff --git a/board/genesi/mx51_efikamx/imximage_mx.cfg b/board/genesi/mx51_efikamx/imximage_mx.cfg index 6fe0ff9ac4..ea6b2710da 100644 --- a/board/genesi/mx51_efikamx/imximage_mx.cfg +++ b/board/genesi/mx51_efikamx/imximage_mx.cfg @@ -1,5 +1,7 @@ # +# Copyright (C) 2009 Pegatron Corporation # Copyright (C) 2010 Marek Vasut +# Copyright (C) 2009-2012 Genesi USA, Inc. # # BASED ON: imx51evk # @@ -43,30 +45,22 @@ BOOT_FROM spi # Address absolute address of the register # value value to be stored in the register -# Setting IOMUXC -DATA 4 0x73fa88a0 0x000 -DATA 4 0x73fa850c 0x20c5 -DATA 4 0x73fa8510 0x20c5 -DATA 4 0x73fa883c 0x5 -DATA 4 0x73fa8848 0x5 -DATA 4 0x73fa84b8 0xe7 -DATA 4 0x73fa84bc 0x45 -DATA 4 0x73fa84c0 0x45 -DATA 4 0x73fa84c4 0x45 -DATA 4 0x73fa84c8 0x45 -DATA 4 0x73fa8820 0x0 -DATA 4 0x73fa84a4 0x5 -DATA 4 0x73fa84a8 0x5 -DATA 4 0x73fa84ac 0xe5 -DATA 4 0x73fa84b0 0xe5 -DATA 4 0x73fa84b4 0xe5 -DATA 4 0x73fa84cc 0xe5 -DATA 4 0x73fa84d0 0xe4 - -DATA 4 0x73fa882c 0x4 -DATA 4 0x73fa88a4 0x4 -DATA 4 0x73fa88ac 0x4 -DATA 4 0x73fa88b8 0x4 +# DDR bus IOMUX PAD settings +DATA 4 0x73fa850c 0x20c5 # SDODT1 +DATA 4 0x73fa8510 0x20c5 # SDODT0 +DATA 4 0x73fa84ac 0xc5 # SDWE +DATA 4 0x73fa84b0 0xc5 # SDCKE0 +DATA 4 0x73fa84b4 0xc5 # SDCKE1 +DATA 4 0x73fa84cc 0xc5 # DRAM_CS0 +DATA 4 0x73fa84d0 0xc5 # DRAM_CS1 +DATA 4 0x73fa882c 0x2 # DRAM_B4 +DATA 4 0x73fa88a4 0x2 # DRAM_B0 +DATA 4 0x73fa88ac 0x2 # DRAM_B1 +DATA 4 0x73fa88b8 0x2 # DRAM_B2 +DATA 4 0x73fa84d4 0xc5 # DRAM_DQM0 +DATA 4 0x73fa84d8 0xc5 # DRAM_DQM1 +DATA 4 0x73fa84dc 0xc5 # DRAM_DQM2 +DATA 4 0x73fa84e0 0xc5 # DRAM_DQM3 # Setting DDR for micron # 13 Rows, 10 Cols, 32 bit, SREF=4 Micron Model -- cgit v1.2.3