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>
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 44bc1c5..6b171b3 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -44,6 +44,7 @@
#include <mach/gpmc.h>
#include <mach/hardware.h>
#include <mach/nand.h>
+#include <mach/mux.h>
#include <mach/usb.h>
#include "sdram-micron-mt46h32m32lf-6.h"
@@ -396,6 +397,10 @@
overo_ads7846_init();
overo_init_smsc911x();
+ /* Ensure SDRC pins are mux'd for self-refresh */
+ omap_cfg_reg(H16_34XX_SDRC_CKE0);
+ omap_cfg_reg(H17_34XX_SDRC_CKE1);
+
if ((gpio_request(OVERO_GPIO_W2W_NRESET,
"OVERO_GPIO_W2W_NRESET") == 0) &&
(gpio_direction_output(OVERO_GPIO_W2W_NRESET, 1) == 0)) {