ARM: k2g: Define embedded_dtb_select for runtime DTB selection in U-boot

[platform/kernel/u-boot.git] / board / ti / ks2_evm / board_k2g.c

diff --git a/board/ti/ks2_evm/board_k2g.c b/board/ti/ks2_evm/board_k2g.c
index f0bd31d..3c75e22 100644 (file)
--- a/board/ti/ks2_evm/board_k2g.c
+++ b/board/ti/ks2_evm/board_k2g.c
@@ -11,9 +11,13 @@
 #include <asm/ti-common/keystone_net.h>
 #include <asm/arch/psc_defs.h>
 #include <asm/arch/mmc_host_def.h>
+#include <fdtdec.h>
+#include <i2c.h>
 #include "mux-k2g.h"
 #include "../common/board_detect.h"
 
+#define K2G_GP_AUDIO_CODEC_ADDRESS     0x1B
+
 const unsigned int sysclk_array[MAX_SYSCLK] = {
        19200000,
        24000000,
@@ -210,6 +214,40 @@ int board_mmc_init(bd_t *bis)
 }
 #endif
 
+#if defined(CONFIG_DTB_RESELECT)
+static int k2g_alt_board_detect(void)
+{
+       int rc;
+
+       rc = i2c_set_bus_num(1);
+       if (rc)
+               return rc;
+
+       rc = i2c_probe(K2G_GP_AUDIO_CODEC_ADDRESS);
+       if (rc)
+               return rc;
+
+       ti_i2c_eeprom_am_set("66AK2GGP", "1.0X");
+
+       return 0;
+}
+
+int embedded_dtb_select(void)
+{
+       int rc;
+
+       rc = k2g_alt_board_detect();
+       if (rc) {
+               printf("Unable to do board detection\n");
+               return -1;
+       }
+
+       fdtdec_setup();
+
+       return 0;
+}
+#endif
+
 #ifdef CONFIG_BOARD_EARLY_INIT_F
 
 static void k2g_reset_mux_config(void)