OMAP3: Setup MUX settings for SDRC CKE signals

This patches ensures the MUX settings are correct for the SDRC
CKE signals to SDRAM. This allows the self-refresh to work when
2 chip-selects are in use.

A warning is thrown away in case the initial muxing is incorrect,
in order to track faulty or old-dated bootloaders.
Note: The CONFIG_OMAP_MUX and CONFIG_OMAP_MUX_WARNINGS options
must be enabled for the mux code to have effect.

Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
index 4abefd9566e8..e00ba128cece 100644
--- a/arch/arm/mach-omap2/board-omap3beagle.c
+++ b/arch/arm/mach-omap2/board-omap3beagle.c
@@ -409,6 +409,10 @@ static void __init omap3_beagle_init(void)
 
         usb_musb_init();
         omap3beagle_flash_init();
+
+        /* Ensure SDRC pins are mux'd for self-refresh */
+        omap_cfg_reg(H16_34XX_SDRC_CKE0);
+        omap_cfg_reg(H17_34XX_SDRC_CKE1);
 }
 
 static void __init omap3_beagle_map_io(void)