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Subject: Re: [PATCH v4 5/9] ARM: imx_v6_v7_defconfig: build imx sdma driver as
 module
To:     Marcel Ziswiler <marcel@ziswiler.com>,
        linux-arm-kernel@lists.infradead.org
Cc:     Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Fabio Estevam <festevam@gmail.com>,
        Andreas Kemnade <andreas@kemnade.info>,
        NXP Linux Team <linux-imx@nxp.com>,
        Pascal Zimmermann <pzimmermann@dh-electronics.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Russell King <linux@armlinux.org.uk>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>, linux-kernel@vger.kernel.org
References: <20210920144938.314588-1-marcel@ziswiler.com>
 <20210920144938.314588-6-marcel@ziswiler.com>
From:   Marek Vasut <marex@denx.de>
Message-ID: <dc987232-8687-a3cc-cc44-9e82e94ddd52@denx.de>
Date:   Mon, 20 Sep 2021 16:52:38 +0200
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On 9/20/21 4:49 PM, Marcel Ziswiler wrote:
> From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> 
> Build CONFIG_IMX_SDMA as a module to avoid the following boot issue:
> 
> [    5.214751] imx-sdma 20ec000.sdma: Direct firmware load for
>   imx/sdma/sdma-imx6q.bin failed with error -2
> [    5.215762] imx-sdma 20ec000.sdma: Falling back to sysfs fallback
>   for: imx/sdma/sdma-imx6q.bin

Isn't there some ROM-side SDMA firmware baked into the MX6 which is used 
as a fallback if loading newer one from filesystem fails ? I suspect the 
default ROM firmware might be buggy.