On 05/01/2023 10:01, Sascha Hauer wrote:

On Wed, Jan 04, 2023 at 09:59:35PM +0200, Bitterblue Smith wrote:

quoted

On 04/01/2023 01:01, Chris Morgan wrote:

quoted

On Wed, Dec 28, 2022 at 12:30:20AM +0100, Martin Blumenstingl wrote:

quoted

Wire up RTL8821CS chipset support using the new rtw88 SDIO HCI code as
well as the existing RTL8821C chipset code.

Unfortunately, this doesn't work for me. I applied it on top of 6.2-rc2
master and I get errors during probe (it appears the firmware never
loads).

Relevant dmesg logs are as follows:

[    0.989545] mmc2: new high speed SDIO card at address 0001
[    0.989993] rtw_8821cs mmc2:0001:1: Firmware version 24.8.0, H2C version 12
[    1.005684] rtw_8821cs mmc2:0001:1: sdio write32 failed (0x14): -110
[    1.005737] rtw_8821cs mmc2:0001:1: sdio read32 failed (0x1080): -110
[    1.005789] rtw_8821cs mmc2:0001:1: sdio write32 failed (0x11080): -110
[    1.005840] rtw_8821cs mmc2:0001:1: sdio read8 failed (0x3): -110
[    1.005920] rtw_8821cs mmc2:0001:1: sdio read8 failed (0x1103): -110
[    1.005998] rtw_8821cs mmc2:0001:1: sdio read32 failed (0x80): -110
[    1.006078] rtw_8821cs mmc2:0001:1: sdio read32 failed (0x1700): -110

The error of "sdio read32 failed (0x1700): -110" then repeats several
hundred times, then I get this:

[    1.066294] rtw_8821cs mmc2:0001:1: failed to download firmware
[    1.066367] rtw_8821cs mmc2:0001:1: sdio read16 failed (0x80): -110
[    1.066417] rtw_8821cs mmc2:0001:1: sdio read8 failed (0x100): -110
[    1.066697] rtw_8821cs mmc2:0001:1: failed to setup chip efuse info
[    1.066703] rtw_8821cs mmc2:0001:1: failed to setup chip information
[    1.066839] rtw_8821cs: probe of mmc2:0001:1 failed with error -16

The hardware I am using is an rtl8821cs that I can confirm was working
with a previous driver.

Thank you.

The USB-based RTL8811CU also doesn't work, with suspiciously similar
errors:

Dec 25 21:43:37 home kernel: rtw_8821cu 1-2:1.0: Firmware version 24.11.0, H2C version 12
Dec 25 21:43:37 home kernel: rtw_8821cu 1-2:1.0 wlp0s20f0u2: renamed from wlan0
Dec 25 21:43:40 home kernel: rtw_8821cu 1-2:1.0: read register 0x5 failed with -110

Is this the very first register access or are there other register
accesses before that actually do work?

Sascha

It's not the first register access. rtw_mac_power_switch() runs a few
times before things fail.