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authorPaul Walmsley <paul@pwsan.com>2009-01-28 12:27:39 -0700
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-02-08 17:50:39 +0000
commit87246b7567f7d1951bfcea29875523ef435c0ebf (patch)
treeef95c7ee66f97630f5afa59ebf7054c371743767 /arch/arm/mach-omap2/io.c
parentf2ab99778a1a04ddbae38f4de4ef40f2edb92080 (diff)
[ARM] OMAP2 SDRC: add SDRAM timing parameter infrastructure
For a given SDRAM clock rate, SDRAM chips require memory controllers to use a specific set of timing minimums and maximums to transfer data reliably. These parameters can be different for different memory chips and can also potentially vary by board. This patch adds the infrastructure for board-*.c files to pass this timing data to the SDRAM controller init function. The timing data is specified in an 'omap_sdrc_params' structure, in terms of SDRC controller register values. An array of these structs, one per SDRC target clock rate, is passed by the board-*.c file to omap2_init_common_hw(). This patch does not define the values for different memory chips, nor does it use the values for anything; those will come in subsequent patches. linux-omap source commit is bc84ecfc795c2d1c5cda8da4127cf972f488a696. Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-omap2/io.c')
-rw-r--r--arch/arm/mach-omap2/io.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 3c1de3615eb..916fcd3a232 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -195,12 +195,12 @@ void __init omap2_map_common_io(void)
omapfb_reserve_sdram();
}
-void __init omap2_init_common_hw(void)
+void __init omap2_init_common_hw(struct omap_sdrc_params *sp)
{
omap2_mux_init();
pwrdm_init(powerdomains_omap);
clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
omap2_clk_init();
- omap2_sdrc_init();
+ omap2_sdrc_init(sp);
gpmc_init();
}