MLK-19722-3 doc: imx: Move SPD related info to the appropriate doc

Currently the Serial Download Protocol tools and procedure are
documented in two places:

- doc/imx/README.sdp
- doc/imx/README.imx6

It is better to consolidate all SDP related information into
README.sdp file, so move the content from README.imx6 to
README.sdp.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
(cherry picked from commit 27373a1723f427fd271ff1b39de2f0bca8c5302d)

2 files changed, 20 insertions, 27 deletions

diff --git a/doc/imx/README.imx6 b/doc/imx/README.imx6
index b0644f8491..eab88353f6 100644
--- a/doc/imx/README.imx6
+++ b/doc/imx/README.imx6
@@ -88,28 +88,3 @@ Reading bank 4:
 
 Word 0x00000002: 9f027772 00000004
 
-2. Using imx_usb_loader for first install with SPL
---------------------------------------------------
-
-imx_usb_loader is a very nice tool by Boundary Devices that
-allow to install U-Boot without a JTAG debugger, using
-the USB boot mode as described in the manual. It is
-a replacement for Freescale's MFGTOOLS.
-
-The sources can be found here:
-
-	https://github.com/boundarydevices/imx_usb_loader.git
-
-Booting in USB mode, the i.MX6 announces itself to the Linux Host as:
-
-Bus 001 Device 111: ID 15a2:0061 Freescale Semiconductor, Inc.
-
-imx_usb_loader is able to download a single file (u-boot.imx)
-to the board. For boards without SPL support, it is enough to
-issue the command:
-
-	sudo ../imx_usb_loader/imx_usb -v u-boot.imx
-
-In order to load SPL and u-boot.img via imx_usb_loader tool,
-please refer to doc/README.sdp.
-
diff --git a/doc/imx/README.sdp b/doc/imx/README.sdp
index 178ea688a7..6ea6e41395 100644
--- a/doc/imx/README.sdp
+++ b/doc/imx/README.sdp
@@ -16,14 +16,19 @@ protocols allow to access a USB device without OS specific drivers. The
 U-Boot implementation has primarly been tested using the open source
 imx_loader utility (https://github.com/boundarydevices/imx_usb_loader).
 
+imx_usb_loader is a very nice tool by Boundary Devices that allow to
+install U-Boot without a JTAG debugger, using the USB boot mode as
+described in the manual. It is a replacement for Freescale's
+MFGTOOLS.
+
 The host side utilities are typically capable to interpret the i.MX
 specific image header (see doc/README.imximage). There are extensions
 for imx_loader's imx_usb utility which allow to interpret the U-Boot
 specific legacy image format (see mkimage(1)). Also the U-Boot side
 support beside the i.MX specific header the U-Boot legacy header.
 
-Usage
------
+1. Using imx_usb_loader for first install with SPL
+--------------------------------------------------
 
 This implementation can be started in U-Boot using the sdp command
 (CONFIG_CMD_USB_SDP) or in SPL if Serial Downloader boot mode has been
@@ -98,3 +103,16 @@ With that SPL and U-Boot can be downloaded with a single invocation
 of imx_usb without arguments:
 
   # imx_usb
+
+2. Using imx_usb_loader non-SPL images
+---------------------------------------
+
+Booting in USB mode, the i.MX6 announces itself to the Linux Host as:
+
+Bus 001 Device 111: ID 15a2:0061 Freescale Semiconductor, Inc.
+
+imx_usb_loader is able to download a single file (u-boot.imx)
+to the board. For boards without SPL support, it is enough to
+issue the command:
+
+	sudo ../imx_usb_loader/imx_usb -v u-boot.imx