From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4ABDFC282DE for ; Thu, 6 Mar 2025 18:14:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=qoSIZeEZItfdQePn3xpCH5SMAbZNHhyWtQWXr+rp4aI=; b=OTIG+b0M3ktPUoET/a7l2P2Bu5 2+Tcq02iXy+2Ojc3Cd2cFuv45Gn1wlSgqfGNPAsqCx6HugP77FVdawqXwLsGr5WriBEcQRPnwk8g2 h8w1N2BALmgVAwBSUCDfuXLxOt71MFi1J3EQHXgV6gmGhSFcvDI9/DZ0bwxtVglGdjZXN30U8hxcb D0jAiNPk7FiDrbwP9B3h+CjK8e2aCnVtq+6ei2dcNOAas6GiXtgA0/k7zlvRR462rZ0UdyVv7y157 r62D90yRAoEfNaKY+vE1azBlH7FyPm0q//Djg0ZP3pegup9MLRo3uqIQmkzrzA/TTnA5zvrb6pTcJ m6nkvlQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqFjb-0000000BpVP-1ndY; Thu, 06 Mar 2025 18:14:15 +0000 Received: from gloria.sntech.de ([185.11.138.130]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqFeI-0000000BoCn-2UR6; Thu, 06 Mar 2025 18:08:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=qoSIZeEZItfdQePn3xpCH5SMAbZNHhyWtQWXr+rp4aI=; b=r5sEDRIGxBH5f3gyz69wvRQSgC t7CIcyI+U1fP26VBt8p8YKwZFGcGW3bvpz8Z5Vvzsq+xzhjX/qmWP2+LuRDlfBkasaCAMhh84pJKs 6ho59zt56Lv+Wbr07v4wpaMNgLx4T505ik1wUHZS6IGOhM3mca8GbssBhJztcPkhhBIjCi+guQ9cR lrBqyIUlEJwqu2ITq4EII85fjWKwmJeNgfwDmAmBapvG7dw0a/trEaxmpotVMPbqYBoqt0dfpGV2c YpsnWiEEf1NKxxRknYHSq+f2quCO2svAH2xIQ/H8k4lx7CGYb0XFuCuY8sYSh5h73ZdfaXCOyvlBy aX6mzrJA==; Received: from i53875a38.versanet.de ([83.135.90.56] helo=diego.localnet) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1tqFeA-0005TK-H2; Thu, 06 Mar 2025 19:08:38 +0100 From: Heiko =?UTF-8?B?U3TDvGJuZXI=?= To: Chukun Pan , Jonas Karlman Cc: Yao Zi , Lee Jones , Rob Herring , Conor Dooley , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH v2 2/2] arm64: dts: rockchip: Add rk3528 QoS register node Date: Thu, 06 Mar 2025 19:08:37 +0100 Message-ID: <117081043.nniJfEyVGO@diego> In-Reply-To: References: <20250306123809.273655-1-amadeus@jmu.edu.cn> <20250306123809.273655-3-amadeus@jmu.edu.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_100846_650865_97B30160 X-CRM114-Status: GOOD ( 18.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Am Donnerstag, 6. M=C3=A4rz 2025, 17:55:16 MEZ schrieb Jonas Karlman: > Hi Chukun, >=20 > On 2025-03-06 13:38, Chukun Pan wrote: > > The Quality-of-Service (QsS) node stores/restores specific > > register contents when the power domains is turned off/on. > > Add QoS node so that they can connect to the power domain. > >=20 > > Signed-off-by: Chukun Pan > > --- > > arch/arm64/boot/dts/rockchip/rk3528.dtsi | 160 +++++++++++++++++++++++ > > 1 file changed, 160 insertions(+) > >=20 >=20 > These QoS node are typically referenced from power domains so that the > PMU driver know what QoS to save/restore when a power domain is power > cycled. >=20 > Vendor kernel only reference the two qos_gpu nodes in it's power domains, > do you have any documentation or knowledge about what power domain the > remaining QoS are related to? I think the GPU actually is the _only_ fully switchable power-domain on the rk3528. The other powerdomains seem to be always on, but can do this idle-request thing. At least that is what I'm reading from the pm-domain definitions in the vendor-kernel, combined with a look at the pmu section of the rk3528 TRM. Heiko