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Fri, 12 May 2023 09:13:06 +0100 Date: Fri, 12 May 2023 09:13:06 +0100 Message-ID: <86ttwim0h9.wl-maz@kernel.org> From: Marc Zyngier To: Douglas Anderson Cc: Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Matthias Brugger , devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, wenst@chromium.org, Eddie Huang , Allen-KH Cheng , Ben Ho , Weiyi Lu , AngeloGioacchino Del Regno , linux-arm-kernel@lists.infradead.org, Tinghan Shen , jwerner@chromium.org, Hsin-Hsiung Wang , yidilin@chromium.org, Seiya Wang , Conor Dooley , linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/6] arm64: dts: mediatek: mt8183: Add mediatek,gicr-save-quirk In-Reply-To: <20230511150539.3.I525a2ed4260046d43c885ee1275e91707743df1c@changeid> References: <20230511150539.6.Ia0b6ebbaa351e3cd67e201355b9ae67783c7d718@changeid> <20230511150539.3.I525a2ed4260046d43c885ee1275e91707743df1c@changeid> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/28.2 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: dianders@chromium.org, tglx@linutronix.de, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, matthias.bgg@gmail.com, devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, wenst@chromium.org, eddie.huang@mediatek.com, allen-kh.cheng@mediatek.com, Ben.Ho@mediatek.com, weiyi.lu@mediatek.com, angelogioacchino.delregno@collabora.com, linux-arm-kernel@lists.infradead.org, tinghan.shen@mediatek.com, jwerner@chromium.org, hsin-hsiung.wang@mediatek.com, yidilin@chromium.org, seiya.wang@mediatek.com, conor+dt@kernel.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230512_011310_395574_BE9A7259 X-CRM114-Status: GOOD ( 20.80 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Thu, 11 May 2023 23:05:37 +0100, Douglas Anderson wrote: > > Firmware shipped on mt8183 Chromebooks is affected by the GICR > save/restore issue as described by the patch ("dt-bindings: > interrupt-controller: arm,gic-v3: Add quirk for Mediatek SoCs w/ > broken FW"). Add the quirk property. > > Fixes: e526c9bc11f8 ("arm64: dts: Add Mediatek SoC MT8183 and evaluation board dts and Makefile") > Signed-off-by: Douglas Anderson > --- > > arch/arm64/boot/dts/mediatek/mt8183.dtsi | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi > index 5169779d01df..39545172fce5 100644 > --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi > +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi > @@ -709,6 +709,7 @@ gic: interrupt-controller@c000000 { > <0 0x0c400000 0 0x2000>, /* GICC */ > <0 0x0c410000 0 0x1000>, /* GICH */ > <0 0x0c420000 0 0x2000>; /* GICV */ > + mediatek,gicr-save-quirk; Is that something you can safely generalise at the SoC level? Are these SoC solely used on Chromebooks, and/or without any hope of seeing any alternative FW being already in use? M. -- Without deviation from the norm, progress is not possible.