linux-kernel - Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support

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Date:   Wed, 7 Jul 2021 22:11:14 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     peng.fan@....nxp.com
Cc:     abel.vesa@....com, aford173@...il.com, agx@...xcpu.org,
        andrew.smirnov@...il.com, devicetree@...r.kernel.org,
        festevam@...il.com, frieder.schrempf@...tron.de,
        jagan@...rulasolutions.com, kernel@...gutronix.de, krzk@...nel.org,
        l.stach@...gutronix.de, linux-arm-kernel@...ts.infradead.org,
        linux-imx@....com, linux-kernel@...r.kernel.org, marex@...x.de,
        p.zabel@...gutronix.de, peng.fan@....com, ping.bai@....com,
        robh+dt@...nel.org, s.hauer@...gutronix.de, shawnguo@...nel.org
Subject: Re: [PATCH V8 0/4] soc: imx: add i.MX BLK-CTL support

Hi Peng,

I have try to use this series to implement BLK-CTL for IMX8MQ and to test it with G1 and G2 VPUs.
You can find the code here:
https://gitlab.collabora.com/benjamin.gaignard/for-upstream/-/commits/control_block_imx8mq

It seems that IMX8MQ requires to set 'fuses' registers to enable the VPUs, I have added that in your code.

Unfortunately that doesn't work, the VPUs are blocked like if they were never reset.
Note that use syscon to manage the reset is working fine.
Since IMX8MQ control block seems lightly different than for IMX8MM, would you mind to add the support for it in your next series ?

Regards,
Benjamin