-----Original Message-----
From: Krzysztof Kozlowski <krzk@kernel.org>
Sent: 26 July 2019 12:40
To: Guillaume Gardet <redacted>
Cc: linux-samsung-soc@vger.kernel.org; Kukjin Kim <kgene@kernel.org>;
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH V2 1/2] arm: dts: exynos: Add GPU/Mali T604 node to
exynos5250

On Thu, 25 Jul 2019 at 14:37, Guillaume Gardet [off-list ref]
wrote:

quoted

quoted

No, regulator is not provided. On all Exynos boards Mali uses its
own dedicated regulator (and sometimes additional one). It worked in
your case because the regulator was set as always-on but this is a

workaround for lack of consumers.

quoted

quoted

Once there is a consumer, the regulator should not be always-on to
save the energy when not used.

I do not have the required info here. Do you have it, or could I skip the

mali-supply for now?

You can guess from regulator name :)
For the Arndale, the schematics are saying it is buck4.

Thanks. This is buck4 as well for snow.

On Arndale board, buck4 has a fixed voltage of 1V contrary to snow, which leads to the following error:
[   21.131930] panfrost 11800000.gpu: Cannot set voltage 925000 uV

The following change fixes the previous error:
-                               regulator-min-microvolt = <1000000>;
-                               regulator-max-microvolt = <1000000>;
+                               regulator-min-microvolt = <850000>;
+                               regulator-max-microvolt = <1300000>;

Should I remove arndale enablement for now until this is fixed separately, or could I add this fixup in this patch serie, as it is related?

Regards,
Guillaume

Best regards,
Krzysztof

IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel