rockchip: dts: tinker: Add tinker-s board support

Support tinker-s board. The board is equivalent of tinker board
except of emmc.

TODO:
- support of usb current burst when the board is powered from pc

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/board/rockchip/tinker_rk3288/tinker-rk3288.c b/board/rockchip/tinker_rk3288/tinker-rk3288.c
index 6c76c3c..7a0c3c9 100644
--- a/board/rockchip/tinker_rk3288/tinker-rk3288.c
+++ b/board/rockchip/tinker_rk3288/tinker-rk3288.c
@@ -8,6 +8,8 @@
 #include <env.h>
 #include <i2c_eeprom.h>
 #include <netdev.h>
+#include <asm/arch-rockchip/bootrom.h>
+#include <asm/io.h>
 
 static int get_ethaddr_from_eeprom(u8 *addr)
 {
@@ -33,3 +35,13 @@ int rk3288_board_late_init(void)
 
 	return 0;
 }
+
+int mmc_get_env_dev(void)
+{
+	u32 bootdevice_brom_id = readl(BROM_BOOTSOURCE_ID_ADDR);
+
+	if (bootdevice_brom_id == BROM_BOOTSOURCE_EMMC)
+		return 0;
+
+	return 1;
+}