lost async page write and murata wifi

[openclosed]

Hi.

I have an imx6qp_sabrea board and I am testing with android_p9.0.0_2.2.0-ga demo image.

First question
I want to have write permission to the / vendor folder.
If you do "mount -o remount, rw / vendor", you get an error like below.
"Buffer I / O error on dev dm-1, logical block 0, lost sync page write
EXT4-fs (dm-1): re-mounted. Opts: block_validity, delalloc, barrier, user_xattr, acl, inode_readahead_blks = 8 "

I have tried changing the value of bootargs in u-boot.
androidboot.selinux = disabled
androidboot.dm_verity = disabled
androidboot.verifiedbootstate = orange androidboot.vbmeta.device_state = unlocked
The situation remains the same.

Adding "androidboot.veritymode = disabled" will reboot the machine after booting.

Is there no other way?

Second question
In the demo image, there is Murata Type ZP module F / W, and I want to use Type 1DX moulde.
Can I change the brcmfmac4339-sdio.bin file in / vendor / firmware / brcm?
The Murata Android Guide documentation says to replace it in the "etc / firmware / bcm" folder, but Android 9.0 doesn't have it.

[openclosed]

I can copy files after setting fastboot "unlock".
However, it still does not recognize the murata module.

It seems that "Active High" is not set in the "wlreg on" value in the dtbo-imx6qp.img file.

[jimmychan]

You can follow the Android User's guide to build the Android BSP to meet your needs.