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From: matti kaasinen <matti.kaasinen@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] am335x board i2c_probe fails from nand boot
Date: Wed, 4 Jan 2017 12:23:03 +0200	[thread overview]
Message-ID: <CADnUhn1gC7EnUvP6fHjXuNmhv52D5SUqzw07OQV_2mWmmJvsKg@mail.gmail.com> (raw)
In-Reply-To: <5f15e470-d12f-e3ea-d393-5cb6e0c700cd@ti.com>

2017-01-04 6:46 GMT+02:00 Lokesh Vutla <lokeshvutla@ti.com>:

> > "Card did not respond to voltage select!" is coming from:
> > drivers/mmc/mmc.c
>
> Can you check if mmc mux is being done properly?



This is one subject I had to fight lately. I just can't figure out how I
can feed my own dtb for u-boot usage. Compilation report complains that
CONFIG_DEFAULT_DEVICE_TREE is not set. If I set it in am335x_evm.h, i'll
get more complaints telling that it has already been set. If I #undef it
and then define it as "mydtb", it does not get produced and you will get
that first complaint. If I replace "am335x-evm.dtb" with "mydtb.dtb" mmc
boot still does not work because card present pin is not correctly mapped
because it is coming from gpio told in "mydtb.dtb".

Therefore, I had to modify drivers/mmc/omap_hsmmc.c by removing getdc and
getwp methods from omap_hsmmc_ops.
After that mmc boot started to work. This can now be dtb related problem in
some other place.

So, what is the correct method feeding modified dtb?

Thanks,
Matti

      parent reply	other threads:[~2017-01-04 10:23 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-03  9:26 [U-Boot] am335x board i2c_probe fails from nand boot matti kaasinen
2017-01-03 10:56 ` Yegor Yefremov
2017-01-03 11:02   ` matti kaasinen
2017-01-03 11:05     ` Yegor Yefremov
2017-01-03 11:10       ` matti kaasinen
2017-01-03 11:16 ` Lokesh Vutla
2017-01-03 12:33   ` matti kaasinen
2017-01-03 13:34     ` matti kaasinen
2017-01-03 14:37       ` matti kaasinen
2017-01-04  4:46         ` Lokesh Vutla
2017-01-04  7:33           ` matti kaasinen
2017-01-05 10:09             ` matti kaasinen
2017-01-05 13:01               ` matti kaasinen
2017-01-04 10:23           ` matti kaasinen [this message]

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