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Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tb4wZ-0000000DKe2-1Ths; Thu, 23 Jan 2025 21:40:55 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tb4u4-0000000DKSL-1thb for linux-arm-kernel@lists.infradead.org; Thu, 23 Jan 2025 21:38:21 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 8104F5C5B53; Thu, 23 Jan 2025 21:37:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 62AEAC4CED3; Thu, 23 Jan 2025 21:38:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737668299; bh=kIg09Min6QwFaovmaca18U9kozBuMZ1yuBDBVGZHNLw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=i0Gl7ZvIuWU4RspKumbfgiP3PSD4xH0Ac1OIpaIVQ7wbHfcXEC3xzHjRNNUWHhdT7 EyaW8WmYu/8mNAO0/UoTeo6doKEkdNDD9Rwhr+0mXjYlAFMtI+gGkREM23XdLPIMjU nEJwGXzJPx7O+coBGU9aYtBGVTHO5ooI48pAiSQNTNuursXmYsfpOWgotEDgdA9Zf0 CRwFe4bPhNhsE7BYcKc40iZpgKIgU6+jhC4JASdjys8GdiIjCvve0I63E564CgLPeE f9zGCoQGzFUV/QcOaJh87AfD2PYRljR8v2eQlYCVTW3G6PngfnG4Bv8L5ad7rCBpI6 57cW6lsfZqCnw== Date: Thu, 23 Jan 2025 15:38:18 -0600 From: Rob Herring To: Christian Bruel Cc: bhelgaas@google.com, lpieralisi@kernel.org, kw@linux.com, manivannan.sadhasivam@linaro.org, krzk+dt@kernel.org, conor+dt@kernel.org, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, jingoohan1@gmail.com, p.zabel@pengutronix.de, johan+linaro@kernel.org, quic_schintav@quicinc.com, cassel@kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, fabrice.gasnier@foss.st.com Subject: Re: [PATCH v3 01/10] dt-bindings: PCI: Add STM32MP25 PCIe Root Complex bindings Message-ID: <20250123213818.GA401153-robh@kernel.org> References: <20250115092134.2904773-1-christian.bruel@foss.st.com> <20250115092134.2904773-2-christian.bruel@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250115092134.2904773-2-christian.bruel@foss.st.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250123_133820_580490_AFD5FE79 X-CRM114-Status: GOOD ( 20.18 ) 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, Jan 15, 2025 at 10:21:25AM +0100, Christian Bruel wrote: > Document the bindings for STM32MP25 PCIe Controller configured in > root complex mode. > > Supports 4 INTx and MSI interrupts from the ARM GICv2m controller. > > STM32 PCIe may be in a power domain which is the case for the STM32MP25 > based boards. > > Supports WAKE# from wake-gpios > > Signed-off-by: Christian Bruel > --- > .../bindings/pci/st,stm32-pcie-common.yaml | 43 +++++++ > .../bindings/pci/st,stm32-pcie-host.yaml | 120 ++++++++++++++++++ > 2 files changed, 163 insertions(+) > create mode 100644 Documentation/devicetree/bindings/pci/st,stm32-pcie-common.yaml > create mode 100644 Documentation/devicetree/bindings/pci/st,stm32-pcie-host.yaml > > diff --git a/Documentation/devicetree/bindings/pci/st,stm32-pcie-common.yaml b/Documentation/devicetree/bindings/pci/st,stm32-pcie-common.yaml > new file mode 100644 > index 000000000000..9ee25bb25aac > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/st,stm32-pcie-common.yaml > @@ -0,0 +1,43 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pci/st,stm32-pcie-common.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: STM32MP25 PCIe RC/EP controller > + > +maintainers: > + - Christian Bruel > + > +description: > + STM32MP25 PCIe RC/EP common properties > + > +properties: > + clocks: > + maxItems: 1 > + description: PCIe system clock > + > + resets: > + maxItems: 1 > + > + phys: > + maxItems: 1 You have phys in host bridge and the root ports? > + > + phy-names: > + const: pcie-phy -names is unless when there is only 1 entry. We already know it's a 'phy' for 'pcie', so the whole string adds nothing. > + > + power-domains: > + maxItems: 1 > + > + access-controllers: > + maxItems: 1 > + > + reset-gpios: > + description: GPIO controlled connection to PERST# signal > + maxItems: 1 You have multiple root ports, but only one PERST# signal? > + > +required: > + - clocks > + - resets > + > +additionalProperties: true > diff --git a/Documentation/devicetree/bindings/pci/st,stm32-pcie-host.yaml b/Documentation/devicetree/bindings/pci/st,stm32-pcie-host.yaml > new file mode 100644 > index 000000000000..b5b8c92522e0 > --- /dev/null > +++ b/Documentation/devicetree/bindings/pci/st,stm32-pcie-host.yaml > @@ -0,0 +1,120 @@ > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/pci/st,stm32-pcie-host.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: STMicroelectronics STM32MP25 PCIe Root Complex > + > +maintainers: > + - Christian Bruel > + > +description: > + PCIe root complex controller based on the Synopsys DesignWare PCIe core. > + > +allOf: > + - $ref: /schemas/pci/snps,dw-pcie.yaml# > + - $ref: /schemas/pci/st,stm32-pcie-common.yaml# > + > +properties: > + compatible: > + const: st,stm32mp25-pcie-rc > + > + reg: > + items: > + - description: Data Bus Interface (DBI) registers. > + - description: PCIe configuration registers. > + > + reg-names: > + items: > + - const: dbi > + - const: config > + > + msi-parent: > + maxItems: 1 > + > + wake-gpios: > + description: GPIO used as WAKE# input signal > + maxItems: 1 > + > + wakeup-source: true > + > +dependentRequired: > + wakeup-source: [ wake-gpios ] > + > +patternProperties: > + '^pcie@[0-2],0$': > + type: object > + $ref: /schemas/pci/pci-pci-bridge.yaml# > + > + properties: > + reg: > + maxItems: 1 > + > + phys: > + maxItems: 1 > + > + phy-names: > + const: pcie-phy > + > + required: > + - phys > + - phy-names > + - ranges > + > + unevaluatedProperties: false > + > +required: > + - interrupt-map > + - interrupt-map-mask > + - ranges > + - dma-ranges > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include > + #include > + #include > + #include > + #include > + > + pcie@48400000 { > + compatible = "st,stm32mp25-pcie-rc"; > + device_type = "pci"; > + reg = <0x48400000 0x400000>, > + <0x10000000 0x10000>; > + reg-names = "dbi", "config"; > + #interrupt-cells = <1>; > + interrupt-map-mask = <0 0 0 7>; > + interrupt-map = <0 0 0 1 &intc 0 0 GIC_SPI 264 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 2 &intc 0 0 GIC_SPI 265 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 3 &intc 0 0 GIC_SPI 266 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 4 &intc 0 0 GIC_SPI 267 IRQ_TYPE_LEVEL_HIGH>; > + #address-cells = <3>; > + #size-cells = <2>; > + ranges = <0x01000000 0x0 0x00000000 0x10010000 0x0 0x10000>, > + <0x02000000 0x0 0x10020000 0x10020000 0x0 0x7fe0000>, > + <0x42000000 0x0 0x18000000 0x18000000 0x0 0x8000000>; > + dma-ranges = <0x42000000 0x0 0x80000000 0x80000000 0x0 0x80000000>; > + clocks = <&rcc CK_BUS_PCIE>; > + resets = <&rcc PCIE_R>; > + msi-parent = <&v2m0>; > + wakeup-source; > + wake-gpios = <&gpioh 5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; > + reset-gpios = <&gpioj 8 GPIO_ACTIVE_LOW>; > + access-controllers = <&rifsc 68>; > + power-domains = <&CLUSTER_PD>; > + > + pcie@0,0 { > + device_type = "pci"; > + reg = <0x0 0x0 0x0 0x0 0x0>; > + phys = <&combophy PHY_TYPE_PCIE>; > + phy-names = "pcie-phy"; > + #address-cells = <3>; > + #size-cells = <2>; > + ranges; > + }; > + > + }; > -- > 2.34.1 >