[PATCH 5/5] doc: rockchip: Update SPI flashing instruction

[Jonas Karlman]

Update documentation on how to write a bootable u-boot-rockchip-spi.bin
image into SPI flash. This removes the reference to a hardcoded and now
obsolete 0x60000 payload offset.

Also remove an obsolete reference to pad_cat.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 doc/board/rockchip/rockchip.rst | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/doc/board/rockchip/rockchip.rst b/doc/board/rockchip/rockchip.rst
index 99376fb54c90..5471bb928205 100644
--- a/doc/board/rockchip/rockchip.rst
+++ b/doc/board/rockchip/rockchip.rst
@@ -211,7 +211,7 @@ SD Card
 ^^^^^^^
 
 All Rockchip platforms (except rk3128 which doesn't use SPL) are now
-supporting a single boot image using binman and pad_cat.
+supporting a single boot image using binman.
 
 To write an image that boots from a SD card (assumed to be /dev/sda):
 
@@ -262,31 +262,15 @@ is u-boot-dtb.img
 SPI
 ^^^
 
-The SPI boot method requires the generation of idbloader.img with help of the mkimage tool.
+Write u-boot-rockchip-spi.bin to offset 0 of SPI flash.
 
-SPL-alone SPI boot image:
-
-.. code-block:: bash
-
-        ./tools/mkimage -n rk3399 -T rkspi -d spl/u-boot-spl.bin idbloader.img
-
-TPL+SPL SPI boot image:
-
-.. code-block:: bash
-
-        ./tools/mkimage -n rk3399 -T rkspi -d tpl/u-boot-tpl.bin:spl/u-boot-spl.bin idbloader.img
-
-Copy SPI boot images into SD card and boot from SD:
+Copy u-boot-rockchip-spi.bin into SD card and boot from SD:
 
 .. code-block:: bash
 
         sf probe
-        load mmc 1:1 $kernel_addr_r idbloader.img
-        sf erase 0 +$filesize
-        sf write $kernel_addr_r 0 ${filesize}
-        load mmc 1:1 ${kernel_addr_r} u-boot.itb
-        sf erase 0x60000 +$filesize
-        sf write $kernel_addr_r 0x60000 ${filesize}
+        load mmc 1:1 $kernel_addr_r u-boot-rockchip-spi.bin
+        sf update $fileaddr 0 $filesize
 
 2. Package the image with Rockchip miniloader
 ---------------------------------------------
-- 
2.41.0