show how to packet rk3036 uboot image and boot from SD

Signed-off-by: Lin Huang <h...@rock-chips.com>
---
 doc/README.rockchip | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/README.rockchip b/doc/README.rockchip
index 87ce9d2..893f256 100644
--- a/doc/README.rockchip
+++ b/doc/README.rockchip
@@ -118,6 +118,13 @@ something like:
    Err:   serial@ff690000
    =>
 
+For evb_rk3036 board:
+       ./evb-rk3036/tools/mkimage -T rksd  -d evb-rk3036/spl/u-boot-spl.bin 
out && \
+       cat evb-rk3036/u-boot-dtb.bin >> out && \
+       sudo dd if=out of=/dev/sdc seek=64
+
+Note: rk3036 SDMMC and debug uart use some iomux, so if you boot from SD, the 
debug must
+       disable
 
 Booting from SPI
 ================
-- 
1.9.1

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