[U-Boot] [RFC] colibri_imx7: Do not hardcode the memory size

[Fabio Estevam <festevam@gmail.com>]

Instead of hardcoding the memory size, use the generic 
imx_ddr_size() function, which extracts the memory size
in runtime by reading the DDR controller registers.

This helps in supporting 512MB and 1GB modules.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Hi Stefan,

I don't have the hardware to test, but I think we
should be good by using imx_ddr_size() here.

 board/toradex/colibri_imx7/colibri_imx7.c | 2 +-
 include/configs/colibri_imx7.h            | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/board/toradex/colibri_imx7/colibri_imx7.c b/board/toradex/colibri_imx7/colibri_imx7.c
index 2b7591e..9029c0b 100644
--- a/board/toradex/colibri_imx7/colibri_imx7.c
+++ b/board/toradex/colibri_imx7/colibri_imx7.c
@@ -52,7 +52,7 @@ DECLARE_GLOBAL_DATA_PTR;
 
 int dram_init(void)
 {
-	gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+	gd->ram_size = imx_ddr_size();
 
 	return 0;
 }
diff --git a/include/configs/colibri_imx7.h b/include/configs/colibri_imx7.h
index ff6bd67..02849ba 100644
--- a/include/configs/colibri_imx7.h
+++ b/include/configs/colibri_imx7.h
@@ -14,7 +14,6 @@
 #include "mx7_common.h"
 
 /*#define CONFIG_DBG_MONITOR*/
-#define PHYS_SDRAM_SIZE			SZ_1G
 
 /* Size of malloc() pool */
 #define CONFIG_SYS_MALLOC_LEN		(32 * SZ_1M)
-- 
2.7.4