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001-mtk-0007-doc-mediatek-add-documentation-for-mt7621-reference-.patch
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001-mtk-0007-doc-mediatek-add-documentation-for-mt7621-reference-.patch
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From 3fed02d930597c53f1c8500aff14581bb87a1e3d Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Fri, 20 May 2022 11:22:31 +0800
Subject: [PATCH 07/25] doc: mediatek: add documentation for mt7621 reference
boards
The MT7621 requires external binary blob being executed during u-boot's
boot-up flow. It's necessary to provide a guide here for users to correctly
build the u-boot.
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
doc/board/index.rst | 1 +
doc/board/mediatek/index.rst | 9 +++++++
doc/board/mediatek/mt7621.rst | 48 +++++++++++++++++++++++++++++++++++
3 files changed, 58 insertions(+)
create mode 100644 doc/board/mediatek/index.rst
create mode 100644 doc/board/mediatek/mt7621.rst
diff --git a/doc/board/index.rst b/doc/board/index.rst
index f90a9cad45..01b99f9cf5 100644
--- a/doc/board/index.rst
+++ b/doc/board/index.rst
@@ -23,6 +23,7 @@ Board-specific doc
highbank/index
intel/index
kontron/index
+ mediatek/index
microchip/index
nokia/index
nxp/index
diff --git a/doc/board/mediatek/index.rst b/doc/board/mediatek/index.rst
new file mode 100644
index 0000000000..38cd8cb5b2
--- /dev/null
+++ b/doc/board/mediatek/index.rst
@@ -0,0 +1,9 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Mediatek
+=========
+
+.. toctree::
+ :maxdepth: 2
+
+ mt7621
diff --git a/doc/board/mediatek/mt7621.rst b/doc/board/mediatek/mt7621.rst
new file mode 100644
index 0000000000..1662255546
--- /dev/null
+++ b/doc/board/mediatek/mt7621.rst
@@ -0,0 +1,48 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+mt7621_rfb/mt7621_nand_rfb
+==========================
+
+U-Boot for the MediaTek MT7621 boards
+
+Quick Start
+-----------
+
+- Get the DDR initialization binary blob
+- Configure CPU and DDR parameters
+- Build U-Boot
+
+Get the DDR initialization binary blob
+--------------------------------------
+
+Download one from:
+ - https://raw.githubusercontent.com/mtk-openwrt/mt7621-lowlevel-preloader/master/mt7621_stage_sram.bin
+ - https://raw.githubusercontent.com/mtk-openwrt/mt7621-lowlevel-preloader/master/mt7621_stage_sram_noprint.bin
+
+mt7621_stage_sram_noprint.bin has removed all output logs. To use this one,
+download and rename it to mt7621_stage_sram.bin
+
+Put the binary blob to the u-boot build directory.
+
+Configure CPU and DDR parameters
+--------------------------------
+
+menuconfig > MIPS architecture > MediaTek MIPS platforms > CPU & DDR configuration
+
+Select the correct DDR timing parameters for your board. The size shown here
+must match the DDR size of you board.
+
+The frequency of CPU and DDR can also be adjusted.
+
+Build U-Boot
+------------
+
+.. code-block:: bash
+
+ $ export CROSS_COMPILE=mipsel-linux-
+ $ make O=build mt7621_rfb_defconfig # or mt7621_nand_rfb_defconfig
+ $ cp mt7621_stage_sram.bin ./build/mt7621_stage_sram.bin
+ $ # or cp mt7621_stage_sram_noprint.bin ./build/mt7621_stage_sram.bin
+ $ make O=build
+
+Burn the u-boot-mt7621.bin to the SPI-NOR or NAND flash.
--
2.36.1