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Wed, 17 Sep 2025 07:53:28 +0000 Date: Wed, 17 Sep 2025 08:53:27 +0100 Message-ID: <86qzw51pmw.wl-maz@kernel.org> From: Marc Zyngier To: Kuninori Morimoto Cc: "Liang, Kan" , Adrian Hunter , Alexander Shishkin , Arnaldo Carvalho de Melo , Catalin Marinas , Conor Dooley , Douglas Anderson , Geert Uytterhoeven , Ian Rogers , Ingo Molnar , James Clark , Jiri Olsa , John Garry , Krzysztof Kozlowski , Leo Yan , Lorenzo Pieralisi , Mark Rutland , Mike Leach , Namhyung Kim , Oliver Upton , Peter Zijlstra , Rob Herring , Shameer Kolothum , Will Deacon , devicetree@vger.kernel.org, linux-arm-kernel@lists. infradead.org, linux-perf-users@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: Re: [PATCH v3 5/6] arm64: dts: renesas: Add R8A78000 X5H DTs In-Reply-To: <87h5x1afgr.wl-kuninori.morimoto.gx@renesas.com> References: <87tt13i0lh.wl-kuninori.morimoto.gx@renesas.com> <87ms6vi0js.wl-kuninori.morimoto.gx@renesas.com> <86v7li1xs4.wl-maz@kernel.org> <87h5x1afgr.wl-kuninori.morimoto.gx@renesas.com> 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/30.1 (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: kuninori.morimoto.gx@renesas.com, kan.liang@linux.intel.com, adrian.hunter@intel.com, alexander.shishkin@linux.intel.com, acme@kernel.org, catalin.marinas@arm.com, conor+dt@kernel.org, dianders@chromium.org, geert+renesas@glider.be, irogers@google.com, mingo@redhat.com, james.clark@linaro.org, jolsa@kernel.org, john.g.garry@oracle.com, krzk+dt@kernel.org, leo.yan@linux.dev, lpieralisi@kernel.org, mark.rutland@arm.com, mike.leach@linaro.org, namhyung@kernel.org, oliver.upton@linux.dev, peterz@infradead.org, robh@kernel.org, shameerali.kolothum.thodi@huawei.com, will@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-renesas-soc@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-20250917_005332_351021_42236C61 X-CRM114-Status: GOOD ( 24.34 ) 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 On Wed, 17 Sep 2025 05:08:21 +0100, Kuninori Morimoto wrote: > > > Hi Marc > > > > + /* > > > + * The ARM GIC-720AE - View 1 > > > + * > > > + * see > > > + * r19uh0244ej0052-r-carx5h.pdf > > > + * - attachments: 002_R-CarX5H_Address_Map_r0p51.xlsx > > > + * - sheet [RT] > > > + * - line 619 > > > > Are these documents publicly available? If not, I don't think this > > helps much. > > You can get it if you are Renesas R-Car Consortium member. Given that statistically nobody outside of Renesas it a "member", the relevance of this document is pretty much nil. > And, the datasheet is very complex, I don't think people can find it by > himself without any hint. I guess we're just a bunch of inexperienced idiots unable to read a TRM. (eye roll...) > > > > + */ > > > + gic: interrupt-controller@39000000 { > > > + compatible = "arm,gic-v3"; > > > + #interrupt-cells = <3>; > > > + #address-cells = <0>; > > > + interrupt-controller; > > > + reg = <0 0x39000000 0 0x20000>, // GICD > > > + <0 0x39080000 0 0x40000>; // GICR > > > > In v2, you indicated that your GIC was configured for GICv4.1, which > > implied 256kB frames for each redistributor. Here, you have either > > just enough space for 32 RDs for a GICv3, or 16 RDs for GICv4. > > > > So either this is wrong, and you're missing half of the RD space, or > > v2 was wrong. Which one is it? > > will fix in v4 > > > > + interrupts = ; > > > > No ITS? That seems... surprising. > > Will be added later Why later? You're adding the GIC, add it all, not just a part of it. M. -- Without deviation from the norm, progress is not possible.