arm: am64x: Add support for selecting DT based on EEPROM

Enable support for selecting DTB within SPL based on EEPROM.
This will help to use single defconfig for both EVM and SK

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

diff --git a/arch/arm/mach-k3/am642_init.c b/arch/arm/mach-k3/am642_init.c
index 2a38b843d9922d0ff632f1464159cc6d76654eb7..885f181d5842006c03f0e8bf8063fc9cda48e4f8 100644 (file)
--- a/arch/arm/mach-k3/am642_init.c
+++ b/arch/arm/mach-k3/am642_init.c
@@ -20,6 +20,7 @@
 #include <dm/uclass-internal.h>
 #include <dm/pinctrl.h>
 #include <mmc.h>
+#include <dm/root.h>
 
 #if defined(CONFIG_SPL_BUILD)
 
@@ -82,6 +83,29 @@ void k3_mmc_stop_clock(void) {}
 void k3_mmc_restart_clock(void) {}
 #endif
 
+#ifdef CONFIG_SPL_OF_LIST
+void do_dt_magic(void)
+{
+       int ret, rescan;
+
+       if (IS_ENABLED(CONFIG_TI_I2C_BOARD_DETECT))
+               do_board_detect();
+
+       /*
+        * Board detection has been done.
+        * Let us see if another dtb wouldn't be a better match
+        * for our board
+        */
+       if (IS_ENABLED(CONFIG_CPU_V7R)) {
+               ret = fdtdec_resetup(&rescan);
+               if (!ret && rescan) {
+                       dm_uninit();
+                       dm_init_and_scan(true);
+               }
+       }
+}
+#endif
+
 void board_init_f(ulong dummy)
 {
 #if defined(CONFIG_K3_LOAD_SYSFW)
@@ -106,6 +130,8 @@ void board_init_f(ulong dummy)
 
        preloader_console_init();
 
+       do_dt_magic();
+
 #if defined(CONFIG_K3_LOAD_SYSFW)
        /*
         * Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue