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Mon, 16 Sep 2024 10:32:41 +0000 Message-ID: Date: Mon, 16 Sep 2024 13:32:32 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 -next 01/11] dt-bindings: interrupt-controller: Add bcm2712 MSI-X DT bindings To: Rob Herring , Stanimir Varbanov Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-pci@vger.kernel.org, Broadcom internal kernel review list , Thomas Gleixner , Krzysztof Kozlowski , Conor Dooley , Florian Fainelli , Jim Quinlan , Nicolas Saenz Julienne , Bjorn Helgaas , Lorenzo Pieralisi , kw@linux.com, Philipp Zabel , Andrea della Porta , Phil Elwell , Jonathan Bell References: <20240910151845.17308-1-svarbanov@suse.de> <20240910151845.17308-2-svarbanov@suse.de> <20240911165611.GA897131-robh@kernel.org> Content-Language: en-US From: Stanimir Varbanov In-Reply-To: <20240911165611.GA897131-robh@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_COUNT_TWO(0.00)[2]; TAGGED_RCPT(0.00)[dt]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_TWELVE(0.00)[21]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_CC(0.00)[vger.kernel.org,lists.infradead.org,broadcom.com,linutronix.de,kernel.org,gmail.com,google.com,linux.com,pengutronix.de,suse.com,raspberrypi.com]; TO_DN_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,suse.de:mid] X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240916_033246_695824_224EE115 X-CRM114-Status: GOOD ( 19.48 ) 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 Hi Rob, Thank you for the review comments! On 9/11/24 19:56, Rob Herring wrote: > On Tue, Sep 10, 2024 at 06:18:35PM +0300, Stanimir Varbanov wrote: >> Adds DT bindings for bcm2712 MSI-X interrupt peripheral controller. >> >> Signed-off-by: Stanimir Varbanov >> --- >> .../brcm,bcm2712-msix.yaml | 69 +++++++++++++++++++ >> 1 file changed, 69 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml >> >> diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml >> new file mode 100644 >> index 000000000000..2b53dfa7c25e >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm2712-msix.yaml >> @@ -0,0 +1,69 @@ >> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/interrupt-controller/brcm,bcm2712-msix.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Broadcom bcm2712 MSI-X Interrupt Peripheral support >> + >> +maintainers: >> + - Stanimir Varbanov >> + >> +description: > > > Don't need '>' here. OK. > >> + This interrupt controller is used to provide interrupt vectors to the >> + generic interrupt controller (GIC) on bcm2712. It will be used as >> + external MSI-X controller for PCIe root complex. >> + >> +allOf: >> + - $ref: /schemas/interrupt-controller/msi-controller.yaml# >> + >> +properties: >> + compatible: >> + const: brcm,bcm2712-mip >> + >> + reg: >> + items: >> + - description: base registers address >> + - description: pcie message address >> + >> + interrupt-controller: true >> + >> + "#interrupt-cells": >> + const: 2 > > What goes in these cells? > > But really, what interrupts does an MSI controller handle? Or are we > just putting "interrupt-controller" in here so that kernel handles this > with IRQCHIP_DECLARE()? > Yes, looks like interrupt-controller property is need by IRQCHIP_DECLARE(). I will drop interrupt-controller/cells and convert the driver to use IRQCHIP_PLATFORM_DRIVER_BEGIN/END(). >> + >> + msi-controller: true > > Drop and use 'unevaluatedProperties'. OK. > >> + >> + "#msi-cells": >> + enum: [0] > > const: 0 OK. > >> + >> + msi-ranges: true > > Drop. OK. > >> + >> +additionalProperties: false >> + >> +required: >> + - compatible >> + - reg >> + - interrupt-controller >> + - "#interrupt-cells" >> + - msi-controller >> + - msi-ranges >> + >> +examples: >> + - | >> + #include >> + >> + axi { >> + #address-cells = <2>; >> + #size-cells = <2>; >> + >> + msi-controller@1000130000 { >> + compatible = "brcm,bcm2712-mip"; >> + reg = <0x10 0x00130000 0x00 0xc0>, >> + <0xff 0xfffff000 0x00 0x1000>; >> + msi-controller; >> + #msi-cells = <0>; >> + interrupt-controller; >> + #interrupt-cells = <2>; >> + msi-ranges = <&gicv2 GIC_SPI 128 IRQ_TYPE_EDGE_RISING 64>; >> + }; >> + }; >> -- >> 2.35.3 >>