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From: Marc Gonzalez <marc.w.gonzalez@free.fr>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>,
	Arend van Spriel <aspriel@gmail.com>,
	Franky Lin <franky.lin@broadcom.com>,
	Hante Meuleman <hante.meuleman@broadcom.com>,
	Kalle Valo <kvalo@kernel.org>, Eric Dumazet <edumazet@google.com>,
	Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>,
	Alexander Prutskov <alep@cypress.com>,
	Joseph chuang <jiac@cypress.com>,
	Kevin Hilman <khilman@baylibre.com>,
	Jerome Brunet <jbrunet@baylibre.com>,
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	Angus Ainslie <angus@akkea.ca>, Pierre-Hugues Husson <phh@phh.me>,
	linux-wireless@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-amlogic@lists.infradead.org
Subject: Re: [RFC PATCH] brcmfmac: add 43751 SDIO ids and initialization
Date: Mon, 13 Mar 2023 14:55:29 +0100	[thread overview]
Message-ID: <3d91a067-c9c3-6d71-11a7-1289ea67f109@free.fr> (raw)
In-Reply-To: <0450e34e-7190-104c-832a-150f15f7c825@free.fr>

On 09/03/2023 18:51, Marc Gonzalez wrote:

> On 09/03/2023 15:29, Ulf Hansson wrote:
> 
>> To narrow down the problem, I would start by preventing the WiFi
>> driver from being insmoded. To make sure it doesn't affect the SDIO
>> card detection process.
>>
>> The point is, the SDIO card should be detected properly, no matter
>> whether there is a corresponding SDIO func driver (WiFi driver)
>> available for it. For a detected SDIO/eMMC/SD card, mmc_add_card()
>> prints a message about the card in the log during initialization. It
>> could look like the below print, for example:
>>
>> "mmc2: new ultra high speed SDR104 SDIO card at address 0001".
> 
> OK, I built the WiFi driver as a module which is NOT loaded at boot time.

Still trying to bisect this heisenbug into submission... :(

So far, I've pared it down to mmc_attach_sdio()

When probe WORKS, mmc_attach_sdio() returns 0.
When probe FAILS, mmc_attach_sdio() returns ETIMEDOUT
via mmc_send_io_op_cond(host, 0, &ocr);

Wrapping mmc_send_io_op_cond() in a loop
makes it work on the second try.

Would appreciate additional guidance. Am mostly stabbing in the dark :)

Regards


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  reply	other threads:[~2023-03-13 13:56 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-03 18:19 Unsupported WiFi adapter on S905X2 board Marc Gonzalez
2023-03-06  9:17 ` Neil Armstrong
2023-03-06 10:24   ` [RFC PATCH] brcmfmac: add 43751 SDIO ids and initialization Marc Gonzalez
2023-03-06 10:41     ` Marc Gonzalez
2023-03-07 14:40       ` Marc Gonzalez
2023-03-07 23:15         ` Franky Lin
2023-03-08 12:47           ` Marc Gonzalez
2023-03-08 17:21             ` Franky Lin
2023-03-08 17:37               ` Neil Armstrong
2023-03-22 17:40               ` Marc Gonzalez
2023-04-04 15:59                 ` Marc Gonzalez
2023-03-09 10:16     ` Marc Gonzalez
2023-03-09 12:13       ` Marc Gonzalez
2023-03-09 14:29         ` Ulf Hansson
2023-03-09 16:45           ` Marc Gonzalez
2023-03-09 17:51           ` Marc Gonzalez
2023-03-13 13:55             ` Marc Gonzalez [this message]
2023-03-13 14:41               ` Marc Gonzalez
2023-03-13 14:53                 ` Marc Gonzalez
2023-03-13 17:09               ` Marc Gonzalez
2023-03-13 20:04                 ` Martin Blumenstingl
2023-03-13 21:42                   ` Marc Gonzalez
2023-03-14  7:27                     ` Ulf Hansson
     [not found]                       ` <c7e48c6f-530b-7198-b8bb-fc927a2fdc66@free.fr>
2023-03-14 11:08                         ` Ulf Hansson
2023-03-14 16:37                           ` Marc Gonzalez
2023-03-15 20:55                             ` Ulf Hansson

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