2017-12-18 4:23 GMT+01:00 Vinod Koul <vinod.koul@xxxxxxxxx>:
> On Wed, Dec 13, 2017 at 04:50:33PM +0100, Nicolas Chauvet wrote:
>> This avoid the following error when using an initramfs on wandboard quad
>> Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2
>
> Are you sure this fixes with latest kernel as the firmware in kernel has
> been removed with commit 5620a0d1aacd: ("firmware: delete in-kernel
> firmware")
Hi ,
Thx for your review.
I've only tested on Fedora kernel 4.14+. This kernel compiles mostly
everything as a module (specially imx-sdma) and (as I understand), it
relies on the separate linux-firmware repository for any (imx-sdma)
firmware.
This patch is only relevant when imx-sdma is compiled as a module (and
harmless if not) and the rootfs isn't available when sdma-imx is
loaded. This typically happens when the imx-sdma is bundled within an
initramfs, but the related firmware is missing from there.
Using the MODULE_FIRMWARE tag will instruct the initramfs builder
(here dracut in my case) to fetch the related firmware once imx-sdma
is selected. (if ever the firmware is missing, it shoudn't produce any
error).
I hope this description is clear enough. Please let me know if anything missing.
Thx
--
-
Nicolas (kwizart)
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