ARM: AM33xx+: Update ioregs to pass different values

Currently same value is programmed for all ioregs. This is not
the case for all SoC's like AM4372. So adding a structure for ioregs
and updating in all board files. And also return from config_cmd_ctrl()
and config_ddr_data() functions if data is not passed.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
[trini: Fixup dxr2, cm_t335, adapt pcm051 rev3]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/board/compulab/cm_t335/spl.c b/board/compulab/cm_t335/spl.c
index 99f3a86..b3b150a 100644
--- a/board/compulab/cm_t335/spl.c
+++ b/board/compulab/cm_t335/spl.c
@@ -20,6 +20,14 @@
 #include <asm/arch/hardware_am33xx.h>
 #include <asm/sizes.h>
 
+const struct ctrl_ioregs ioregs = {
+	.cm0ioctl		= MT41J128MJT125_IOCTRL_VALUE,
+	.cm1ioctl		= MT41J128MJT125_IOCTRL_VALUE,
+	.cm2ioctl		= MT41J128MJT125_IOCTRL_VALUE,
+	.dt0ioctl		= MT41J128MJT125_IOCTRL_VALUE,
+	.dt1ioctl		= MT41J128MJT125_IOCTRL_VALUE,
+};
+
 static const struct ddr_data ddr3_data = {
 	.datardsratio0		= MT41J128MJT125_RD_DQS,
 	.datawdsratio0		= MT41J128MJT125_WR_DQS,
@@ -89,7 +97,7 @@
 		reset_cpu(0);
 	}
 	debug("%s: setting DRAM size to %ldM\n", __func__, size >> 20);
-	config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
+	config_ddr(303, &ioregs, &ddr3_data,
 		   &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
 }