From 034477bb31948d698d18b84bc0834c3e25a14d04 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Wed, 16 Sep 2009 23:21:57 +0400 Subject: [PATCH] mpc83xx: mpc8360emds: Don't use LBC SDRAM when DDR is available Since commit 5c2ff323a94e27e481f70c44838d43fcd844dd46 ("mpc8360emds: rework LBC SDRAM setup"), LBC SDRAM is available for use in Linux. Though, it appears that QE Ethernet in Gigabit mode can't transmit large packets when it tries to work with a data in LBC SDRAM (memtest didn't discover any issues, is LBC SDRAM just too slow?). With this patch we can still use the board without DDR memory, but if DDR is available, we don't use LBC SDRAM. Signed-off-by: Anton Vorontsov Signed-off-by: Kim Phillips --- board/freescale/mpc8360emds/mpc8360emds.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/board/freescale/mpc8360emds/mpc8360emds.c b/board/freescale/mpc8360emds/mpc8360emds.c index dc4dbd3c3..769eb2f11 100644 --- a/board/freescale/mpc8360emds/mpc8360emds.c +++ b/board/freescale/mpc8360emds/mpc8360emds.c @@ -126,6 +126,7 @@ phys_size_t initdram(int board_type) { volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR; u32 msize = 0; + u32 lbc_sdram_size; if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im) return -1; @@ -147,7 +148,9 @@ phys_size_t initdram(int board_type) /* * Initialize SDRAM if it is on local bus. */ - msize += sdram_init(msize * 1024 * 1024); + lbc_sdram_size = sdram_init(msize * 1024 * 1024); + if (!msize) + msize = lbc_sdram_size; /* return total bus SDRAM size(bytes) -- DDR */ return (msize * 1024 * 1024);