DanielRIOT

--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
@@ -22,7 +22,7 @@
 
 	chosen {
 		stdout-path = "serial0:115200n8";
-		bootargs = "earlycon=uart8250,mmio32,0x11002000 console=ttyS0,115200n1 swiotlb=512";
+		bootargs = "console=ttyS0,115200n1 rootfstype=squashfs earlyprintk block2mtd.block2mtd=/dev/mmcblk0,65536,eMMC,5 mtdparts=eMMC:768k(preloader)ro,512k(uboot),512k(uboot-env),256k(Factory),64M(firmware),2048M(usrdata)";
 	};
 

DanielRIOT

// SPDX-License-Identifier: GPL-2.0
/dts-v1/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

#include "ar9331.dtsi"
/*

ar9331 GPIO : function

DanielRIOT

/* SPI1 
* D1 Output and D0 Input 
Wkup : 1_17 : P9.23
Resetn : 3_21 : P9.25
Wirq : 3_19 : P9.27 
*/

/dts-v1/;
/plugin/;

DanielRIOT

 [  593.104981] do_page_fault(): sending SIGSEGV to sh for invalid read access from 00004596
[  593.197570] epc = 00428f73 in busybox[400000+49000]
[  593.265560] ra  = 00428f73 in busybox[400000+49000]
[  593.364304] do_page_fault(): sending SIGSEGV to ubusd for invalid write access to 00415000
[  593.459328] epc = 77f53dc0 in libc.so[77ee2000+94000]
[  593.529765] ra  = 0040161b in ubusd[400000+4000]

root@OpenWrt:/usr/sbin# channel 3
[  600.531440] do_page_fault(): sending SIGSEGV to channel for invalid read access from 7ff2c014
[  600.630123] epc = 77faf9ec in libc.so[77f2a000+94000]

DanielRIOT

[    0.000000] Linux version 4.14.101 (openwrt@openwrt-VirtualBox) (gcc version 7.4.0 (OpenWrt GCC 7.4.0 r9275-27a30a0)) #0 Mon Feb 25 14:49:16 2019
[    0.000000] bootconsole [early0] enabled
[    0.000000] CPU0 revision is: 00019374 (MIPS 24Kc)
[    0.000000] MIPS: machine is RIOT Albatross
[    0.000000] SoC: Atheros AR9330 rev 1
[    0.000000] Determined physical RAM map:
[    0.000000]  memory: 04000000 @ 00000000 (usable)
[    0.000000] Initrd not found or empty - disabling initrd
[    0.000000] Primary instruction cache 64kB, VIPT, 4-way, linesize 32 bytes.
[    0.000000] Primary data cache 32kB, 4-way, VIPT, cache aliases, linesize 32 bytes

DanielRIOT

hard crash after channel change : 
[   93.594907] CPU 0 Unable to handle kernel paging request at virtual address ffffd11c, epc == 830f7004, ra == 830f7000
[   93.605677] Oops[#1]:
[   93.608229] CPU: 0 PID: 1580 Comm: uci Not tainted 4.14.101 #0
[   93.615011] task: 838f9b80 task.stack: 82dce000
[   93.620268] $ 0   : 00000000 00000001 00000000 00000020
[   93.626346] $ 4   : 00000001 08100000 80680000 80653f70
[   93.632421] $ 8   : 83957614 8006fc68 80137bf4 0000001c
[   93.638497] $12   : 7fcbbec8 77faa2c0 00400d71 00000002