[RFC PATCH] brcmfmac: add 43751 SDIO ids and initialization

[Marc Gonzalez]

On 13/03/2023 15:41, Marc Gonzalez wrote:

> NOTA BENE: for mmc1, in both runs, kernel probes 10 times and fails with:
> 
> [    1.265231] mmc_attach_sdio failed with -110
> [    1.373006] mmc1: new HS200 MMC card at address 0001
> [    1.377242] mmcblk1: mmc1:0001 SCA16G 14.7 GiB 
> [    1.383718] mmcblk1boot0: mmc1:0001 SCA16G 4.00 MiB 
> [    1.387257] mmcblk1boot1: mmc1:0001 SCA16G 4.00 MiB 
> [    1.391912] mmcblk1rpmb: mmc1:0001 SCA16G 4.00 MiB, chardev (246:0)
> 
> mmc_attach_sdio() fails but mmc_add_card() succeeds anyway...?
> Confused.
> mmc_attach_sdio() doesn't call mmc_add_card() if it exits prematurely.

This might be because mmc1 and mmc2 are of "different nature".

[    2.083053] mmc2: new ultra high speed SDR50 SDIO card at address 0001
[    2.093918] CPU: 1 PID: 35 Comm: kworker/1:1 Not tainted 6.2.0-rc8 #300
[    2.100464] Hardware name: SEI Robotics SEI510 (DT)
[    2.105296] Workqueue: events_freezable mmc_rescan
[    2.110038] Call trace:
[    2.126856]  mmc_add_card+0xfc/0x2d0
[    2.130392]  mmc_attach_sdio+0x22c/0x3c0
[    2.134273]  mmc_rescan+0x258/0x2f0
[    2.137723]  process_one_work+0x1cc/0x320
[    2.141691]  worker_thread+0x14c/0x450
[    2.145399]  kthread+0x10c/0x110
[    2.148591]  ret_from_fork+0x10/0x20


/* below message from call_driver_probe() getting ENODEV */
[    2.152299] mmcblk: probe of mmc2:0001 rejects match -19
[    2.176589] YO mmc1
[    2.180263] YO mmc1
[    2.183937] YO mmc1
[    2.187621] YO mmc1
[    2.191299] YO mmc1
[    2.194972] YO mmc1
[    2.198649] YO mmc1
[    2.202326] YO mmc1
[    2.206000] YO mmc1
[    2.209674] YO mmc1
[    2.209687] mmc_attach_sdio failed with -110
[    2.318954] mmc1: new HS200 MMC card at address 0001
[    2.322515] CPU: 1 PID: 20 Comm: kworker/1:0 Not tainted 6.2.0-rc8 #300
[    2.329061] Hardware name: SEI Robotics SEI510 (DT)
[    2.333892] Workqueue: events_freezable mmc_rescan
[    2.338635] Call trace:
[    2.355453]  mmc_add_card+0xfc/0x2d0
[    2.358989]  mmc_attach_mmc+0xf0/0x180
[    2.362698]  mmc_rescan+0x280/0x2f0
[    2.366148]  process_one_work+0x1cc/0x320
[    2.370115]  worker_thread+0x14c/0x450
[    2.373824]  kthread+0x10c/0x110
[    2.377015]  ret_from_fork+0x10/0x20
[    2.381265] mmcblk1: mmc1:0001 SCA16G 14.7 GiB 
[    2.389945] mmcblk1boot0: mmc1:0001 SCA16G 4.00 MiB 
[    2.391199] mmcblk1boot1: mmc1:0001 SCA16G 4.00 MiB 
[    2.395897] mmcblk1rpmb: mmc1:0001 SCA16G 4.00 MiB, chardev (246:0)