verdin-imx8mm: automatic ram size detection

Implement board_phys_sdram_size() to automatically detect Verdin iMX8M
Mini DualLite 1GB vs. Verdin iMX8M Mini Quad 2GB.

Note: This only works if we keep using similar RAM chips!

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

diff --git a/board/toradex/verdin-imx8mm/verdin-imx8mm.c b/board/toradex/verdin-imx8mm/verdin-imx8mm.c
index 9c6f35e..7cfae87 100644 (file)
--- a/board/toradex/verdin-imx8mm/verdin-imx8mm.c
+++ b/board/toradex/verdin-imx8mm/verdin-imx8mm.c
@@ -180,6 +180,16 @@ int board_late_init(void)
        return 0;
 }
 
+int board_phys_sdram_size(phys_size_t *size)
+{
+       if (!size)
+               return -EINVAL;
+
+       *size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
+
+       return 0;
+}
+
 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, struct bd_info *bd)
 {