From nobody Wed Jul 07 13:06:14 2021 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 0036611DE2B0 for ; Wed, 7 Jul 2021 13:06:22 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mx1.sbone.de (mx1.sbone.de [IPv6:2a01:4f8:13b:39f::9f:25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mx1.sbone.de", Issuer "SBone.DE" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GKfnT02smz4vwh for ; Wed, 7 Jul 2021 13:06:20 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.sbone.de (mail.sbone.de [IPv6:fde9:577b:c1a9:31::2013:587]) (using TLSv1 with cipher ADH-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mx1.sbone.de (Postfix) with ESMTPS id 9458C8D4A172 for ; Wed, 7 Jul 2021 13:06:17 +0000 (UTC) Received: from content-filter.sbone.de (content-filter.sbone.de [IPv6:fde9:577b:c1a9:31::2013:2742]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPS id 1D2ABE707CF for ; Wed, 7 Jul 2021 13:06:17 +0000 (UTC) X-Virus-Scanned: amavisd-new at sbone.de Received: from mail.sbone.de ([IPv6:fde9:577b:c1a9:31::2013:587]) by content-filter.sbone.de (content-filter.sbone.de [fde9:577b:c1a9:31::2013:2742]) (amavisd-new, port 10024) with ESMTP id Bpdkd84028uZ for ; Wed, 7 Jul 2021 13:06:15 +0000 (UTC) Received: from nv.sbone.de (nv.sbone.de [IPv6:fde9:577b:c1a9:31::2013:138]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.sbone.de (Postfix) with ESMTPSA id BE03BE707C8 for ; Wed, 7 Jul 2021 13:06:15 +0000 (UTC) Date: Wed, 7 Jul 2021 13:06:14 +0000 (UTC) From: "Bjoern A. Zeeb" To: freebsd-arm@FreeBSD.org Subject: rk3399 "power off" gpu? Message-ID: X-OpenPGP-Key-Id: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-Rspamd-Queue-Id: 4GKfnT02smz4vwh X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of bzeeb-lists@lists.zabbadoz.net designates 2a01:4f8:13b:39f::9f:25 as permitted sender) smtp.mailfrom=bzeeb-lists@lists.zabbadoz.net X-Spamd-Result: default: False [-0.30 / 15.00]; RCVD_TLS_LAST(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_COUNT_FIVE(0.00)[5]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a01:4f8:13b:39f::9f:25:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a01:4f8:13b:39f::9f:25]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[2a01:4f8:13b:39f::9f:25:from:127.0.2.255]; DMARC_NA(0.00)[zabbadoz.net]; NEURAL_SPAM_SHORT(1.00)[0.995]; NEURAL_HAM_LONG(-0.99)[-0.995]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/32, country:DE]; SUBJECT_ENDS_QUESTION(1.00)[]; MAILMAN_DEST(0.00)[freebsd-arm] X-ThisMailContainsUnwantedMimeParts: N Hi, I was wondering if there is a way to completely "shutdown" (power off) the GPU or put it into "low power" (suspend) mode? Just setting the gpu state to disabled is probably the wrong as it won't give the SYR828 PMIC anymore and u-boot likely enables it all. If it's possible would anyone have a dtso to do that? /bz -- Bjoern A. Zeeb r15:7