[BPI-R64] OpenWRT kernel 5.4.40 running from eMMC

idreamer · June 11, 2020, 3:35am

Hi, @svintuss
Would you please create a github repo for all patches and firmware bin. I can’t follow your approach. Thanks.

svintuss · June 11, 2020, 9:24pm

Sure, will do that soon. I just want to find out how to make OpenWRT patches from manually modified files. I don’t like a “compile - install - make changes - recompile again - replace modules on working system” approach.

svintuss · June 11, 2020, 9:33pm

I’ve got some progress here.

After several hours of load testing with iperf3 I found out that mt7615 makes system crash if TX power exceeds 21 dBm. That means that in ‘AU’ or ‘US’ regional domains one have to manually limit TX power to 21 dBm.

I don’t know yet whether it’s my unit’s or a general BPI-MT7615 board/driver problem.

bourne_hlm · June 12, 2020, 4:22am

I also have that problem. I got a solution from BPI. If you want use BPI-MT7615 module on BPI-R64 board, The R64 board must modify a resistance to provide more power to the pci-e slot.

frank-w · June 13, 2020, 2:30pm

Which slot (pcie0,cn25?), which resistant and to which value?

svintuss · June 15, 2020, 3:19pm

You’re right.

Thanks to the assistance of 肖 [email protected] from @sinovoip I’ve managed to solve the TX power crash problem.

BPI-R64’s mPCIe slot current is limited to 1.5A (1.44A to be precise). When TX power of mt7615e board exceeds 22 dBm it starts to draw too much current and the whole system crashes.

This 1.5A limit is managed by SY6280 programmable switch. There are two solutions:

Short circuit pins 1 and 5 and remove the current limit.
Increase current limit by replacing R217 resistor to 3K one. This will give 2,27A current limit. The resistor is 0402 (1 mm x 0.5 mm)

I tried method 1, I can confirm that it works. Board is stable with 23 dBm TX power. Maybe the same procedure could be done to CN8 slot too.

UPD: There seems to be an issue with method 1: mt7615e goes up only after initial power on. If one reboots the board or presses reset button there comes up this message in kernel log:

[   12.231122] mt7615e 0000:01:00.0: Firmware is not ready for download

UPD2: Can confirm that method 2 works without issue. After changing R217 to 3KOhm the board is working fine on 23 dBm.

frank-w · June 18, 2020, 1:48pm

Cn8 has additional problem with missing capacitors on tx-lines

frank-w · August 8, 2020, 5:04pm

Is there any new state using eeprom from file? In Mainline i see only mtd version (which conflicts with mt7622), and mtd in 5.4 is broken (at least in openwrt)

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/mediatek/mt76/eeprom.c

And also mt76 git

github.com

openwrt/mt76/blob/master/eeprom.c

// SPDX-License-Identifier: ISC
/*
 * Copyright (C) 2016 Felix Fietkau <[email protected]>
 */
#include <linux/of.h>
#include <linux/of_net.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/etherdevice.h>
#include "mt76.h"

static int
mt76_get_of_eeprom(struct mt76_dev *dev, int len)
{
#if defined(CONFIG_OF) && defined(CONFIG_MTD)
	struct device_node *np = dev->dev->of_node;
	struct mtd_info *mtd;
	const __be32 *list;
	const char *part;
	phandle phandle;

This file has been truncated. show original

Water · February 21, 2021, 7:16am

hi svintuss,

I encounter this problem too. when I use MT7615 5g wifi, the board will be stuck then reboot. don’t have any log output. I hard to debug with my less knowledge of it without any log output in console.

neowong · April 21, 2021, 3:20am

i am remove the paython，when make it ,get this error:

–without-pymalloc CONFIG_SITE= ; fi )

configure: error: Please install autoconf-archive package and re-run autoreconf
Makefile:352: recipe for target '/home/neo/BPI_R64_OpenWRT/openwrt/build_dir/hostpkg/Python-3.9.4/.configured' failed
make[3]: *** [/home/neo/BPI_R64_OpenWRT/openwrt/build_dir/hostpkg/Python-3.9.4/.configured] Error 1
make[3]: Leaving directory '/home/neo/BPI_R64_OpenWRT/openwrt/feeds/packages/lang/python/python3'
time: package/feeds/packages/python3/host-compile#5.97#0.40#8.36
package/Makefile:111: recipe for target 'package/feeds/packages/python3/host/compile' failed
make[2]: *** [package/feeds/packages/python3/host/compile] Error 2
make[2]: Leaving directory '/home/neo/BPI_R64_OpenWRT/openwrt'
package/Makefile:107: recipe for target '/home/neo/BPI_R64_OpenWRT/openwrt/staging_dir/target-aarch64_cortex-a53_musl/stamp/.package_compile' failed
make[1]: *** [/home/neo/BPI_R64_OpenWRT/openwrt/staging_dir/target-aarch64_cortex-a53_musl/stamp/.package_compile] Error 2
make[1]: Leaving directory '/home/neo/BPI_R64_OpenWRT/openwrt'
/home/neo/BPI_R64_OpenWRT/openwrt/include/toplevel.mk:218: recipe for target 'world' failed
make: *** [world] Error 2
copying kernel,dt, rootfs
cp: cannot stat 'build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_mt7622/bpi_bananapi-r64-kernel.bin': No such file or directory
cp: cannot stat 'build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_mt7622/image-mt7622-bananapi-bpi-r64.dtb': No such file or directory
cp: cannot stat 'build_dir/target-aarch64_cortex-a53_musl/linux-mediatek_mt7622/root.ext4': No such file or directory
done. Copy folder r64-boot into root folder of USB drive (at least 4GB needed)

frank-w · April 21, 2021, 5:10am

Have you tried this?

dangowrt · April 23, 2021, 7:21pm

The R64 is fully supported by mainline OpenWrt by now, no need to start off with outdated vendor-modified version of OpenWrt. You can follow the documentation on Build system setup regarding the prerequisites.

Then clone OpenWrt and launch menuconfig

git clone https://git.openwrt.org/openwrt/openwrt.git/
cd openwrt
scripts/feeds update
scripts/feeds install -a
make menuconfig

Then select R64 board and packages you would like:

Then trigger build using make -j$(nproc) and wait for a long time

colinw · April 24, 2021, 12:57am

A third option, like option 1 is to disable the current limiting by shorting pins 2 and 3. i.e. using a 0 ohm Resistor for R217 the ISET. This leaves the EN pin still functional so the reboot works. I was successful with this approach.

My ugly solder job:

svintuss · July 25, 2021, 1:24pm

Hello guys. It’s been some time since I tried to make use of BPI R64 and I fell off track. Could somebody fast forward me on recent updates regarding OpenWRT support?

Does mainline OpenWRT produce complete images for both SD and eMMC? Or I still need to extract the preloader, ATF and UBoot from BPI repository and then take compiled kernel and rootfs from OpenWRT and flash them manually?
Is it possible now to use squashfs or it’s still necessary to choose ext4 rootfs?
Are EEPROM patches for MT7615 and MT7622 still needed or you have found a way to place EEPROM in a file/on a partition?
Does Bluetooth work with MT7615?

dangowrt · July 25, 2021, 6:29pm

Installation to eMMC (and SPI-NAND) can be done using the bootloader menu when booting from SD card and also triggered to happen on next boot my modifying bootloader environment from inside OpenWrt. See https://openwrt.org/toh/sinovoip/bananapi_bpi-r64_v1.1#sd_card_installation
The opposite is true now: There are only squashfs images, the same image can be used on SPI-NAND, eMMC and SD card for sysupgrade.
mt76 still doesn’t supper loading EEPROM for MT7622 built-in 802.11bgn WiFi in a meaningful way for this board, you will need to patch to load from file.
Yes, Bluetooth works out of the box.

Kosyak · July 26, 2021, 2:57am

mt76 still doesn’t supper loading EEPROM for MT7622 built-in 802.11bgn WiFi in a meaningful way for this board, you will need to patch to load from file.

EEPROM can be flashed to SPI-NAND and mt76 can load it from there as intended:

svintuss · July 26, 2021, 5:52am

Thank you.

This trick won’t work for MT7615, right? I still have to hardcode firmware in its driver?

Kosyak · July 26, 2021, 6:09am

AFAIK, mt7615 boards have own internal EEPROM and no other data required from system, maybe I’m wrong.

frank-w · July 26, 2021, 6:35am

Mt7615 has own eeprom in its efuse,but if tx power needs to be increased you have to load modified eeprom. Afair it is limited to 19db

svintuss · July 26, 2021, 6:41am

Thank you, but I still need to load EEPROM for MT7615. As we discovered in this thread my board doesn’t have any preloaded calibration data.