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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95A6CC04A68 for ; Thu, 28 Jul 2022 14:37:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233071AbiG1OhN (ORCPT ); Thu, 28 Jul 2022 10:37:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38026 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232486AbiG1OfW (ORCPT ); Thu, 28 Jul 2022 10:35:22 -0400 Received: from mail.baikalelectronics.com (unknown [87.245.175.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 610C6550B3; Thu, 28 Jul 2022 07:35:03 -0700 (PDT) Received: from mail (mail.baikal.int [192.168.51.25]) by mail.baikalelectronics.com (Postfix) with ESMTP id 3127216DB; Thu, 28 Jul 2022 17:37:22 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.baikalelectronics.com 3127216DB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baikalelectronics.ru; s=mail; t=1659019042; bh=KQRGL/XPxlRYl4cYVwRo4mgR2jl0BfcuH+fJxdVq07g=; h=From:To:CC:Subject:Date:In-Reply-To:References:From; b=qctQO9bjFogRTaaDobSWgBsBnRHQIHo/BBipoFuYk5oO1EEzB8GciMINthfrTvtx/ Nigz8wlMu/N1lWKJpFPy9SH2Jozb9ekrzNcY3ucLSt8jUOCs0dNO++9WeeQx49ueZP xe/7h25HyE+HI1Efpxfy6zpxrw6YgTy0r19WXK9k= Received: from localhost (192.168.53.207) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 28 Jul 2022 17:34:57 +0300 From: Serge Semin To: Rob Herring , Rob Herring , Krzysztof Kozlowski , Bjorn Helgaas , Lorenzo Pieralisi , Jingoo Han , Gustavo Pimentel , Alim Akhtar , Kunihiko Hayashi , Masami Hiramatsu , Marek Szyprowski , Jaehoon Chung CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Frank Li , Manivannan Sadhasivam , , , , , Subject: [PATCH v4 09/17] dt-bindings: PCI: dwc: Add clocks/resets common properties Date: Thu, 28 Jul 2022 17:34:19 +0300 Message-ID: <20220728143427.13617-10-Sergey.Semin@baikalelectronics.ru> In-Reply-To: <20220728143427.13617-1-Sergey.Semin@baikalelectronics.ru> References: <20220728143427.13617-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org DW PCIe RP/EP reference manuals explicit define all the clocks and reset requirements in [1] and [2]. Seeing the DW PCIe vendor-specific DT-bindings have already started assigning random names to the same set of the clocks and resets lines, let's define a generic names sets and add them to the DW PCIe definitions in the common DT-schema. These definitions will be used in the generic DW PCIe DT-schema and can be referenced in the particular DW PCIe DT-bindings if they are compatible with them, otherwise the platforms can be left with already defined clocks/resets properties. [1] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe Root Port, Version 5.40a, March 2019, p.55 - 78. [2] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe Endpoint, Version 5.40a, March 2019, p.58 - 81. Signed-off-by: Serge Semin --- Changelog v3: - This is a new patch unpinned from the next one: https://lore.kernel.org/linux-pci/20220503214638.1895-2-Sergey.Semin@baikalelectronics.ru/ by the Rob' request. (@Rob) - Drop synonymous from the names list since the device schemas create their own enumerations anyway. --- .../bindings/pci/samsung,exynos-pcie.yaml | 3 +- .../bindings/pci/snps,dw-pcie-common.yaml | 100 ++++++++++++++++++ .../bindings/pci/snps,dw-pcie-ep.yaml | 26 +++++ .../devicetree/bindings/pci/snps,dw-pcie.yaml | 20 +++- .../pci/socionext,uniphier-pcie-ep.yaml | 3 +- 5 files changed, 149 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml index 445eed94b53f..fedb774938f4 100644 --- a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml @@ -16,7 +16,8 @@ description: |+ snps,dw-pcie.yaml. allOf: - - $ref: /schemas/pci/snps,dw-pcie.yaml# + - $ref: /schemas/pci/pci-bus.yaml# + - $ref: /schemas/pci/snps,dw-pcie-common.yaml# properties: compatible: diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml index c6a55f90ddd5..f22fb01c9bd0 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml @@ -58,6 +58,36 @@ properties: minItems: 1 maxItems: 26 + clocks: + description: + DWC PCIe reference manual explicitly defines a set of the clocks required + to get the controller working correctly. In general all of them can + be divided into two groups':' application and core clocks. Note the + platforms may have some of the clock sources unspecified in case if the + corresponding domains are fed up from a common clock source. + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + + resets: + description: + DWC PCIe reference manual explicitly defines a set of the reset + signals required to be de-asserted to properly activate the controller + sub-parts. All of these signals can be divided into two sub-groups':' + application and core resets with respect to the main sub-domains they + are supposed to reset. Note the platforms may have some of these signals + unspecified in case if they are automatically handled or aggregated into + a comprehensive control module. + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + phys: description: There can be up to the number of possible lanes PHYs specified. @@ -218,4 +248,74 @@ definitions: uncorrectable error. const: sft_ue + clock-names: + description: + Reference clock names common for the DWC PCIe Root Port and Endpoint + controllers. + anyOf: + - description: + Data Bus Interface (DBI) clock. Clock signal for the AXI-bus + interface of the Configuration-Dependent Module, which is + basically the set of the controller CSRs. + const: dbi + - description: + Application AXI-bus Master interface clock. Basically this is + a clock for the controller DMA interface (PCI-to-CPU). + const: mstr + - description: + Application AXI-bus Slave interface clock. This is a clock for + the CPU-to-PCI memory IO interface. + const: slv + - description: + Controller Core-PCS PIPE interface clock. It's normally + supplied by an external PCS-PHY. + const: pipe + - description: + Controller Primary clock. It's assumed that all controller input + signals (except resets) are synchronous to this clock. + const: core + - description: + Auxiliary clock for the controller PMC domain. The controller + partitioning implies having some parts to operate with this + clock in some power management states. + const: aux + - description: + Generic reference clock. In case if there are several + interfaces fed up with a common clock source it's advisable to + define it with this name (for instance pipe, core and aux can + be connected to a single source of the periodic signal). + const: ref + - description: + Clock for the PHY registers interface. Originally this is + a PHY-viewport-based interface, but some platform may have + specifically designed one. + const: phy_reg + + reset-names: + description: + Reset signal names common for the DWC PCIe Root Port and Endpoint + controllers. + anyOf: + - description: Data Bus Interface (DBI) domain reset + const: dbi + - description: AXI-bus Master interface reset + const: mstr + - description: AXI-bus Slave interface reset + const: slv + - description: Controller Non-sticky CSR flags reset + const: non-sticky + - description: Controller sticky CSR flags reset + const: sticky + - description: PIPE-interface (Core-PCS) logic reset + const: pipe + - description: + Controller primary reset (resets everything except PMC module) + const: core + - description: PCS/PHY block reset + const: phy + - description: PMC hot reset signal + const: hot + - description: Cold reset signal + const: pwr + ... diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml index bfff723b529d..bb7e4381d392 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml @@ -74,6 +74,26 @@ properties: items: $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/interrupt-names + clocks: + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/clock-names + + resets: + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/reset-names + max-functions: maximum: 32 @@ -109,6 +129,12 @@ examples: interrupts = <23>, <24>; interrupt-names = "dma0", "dma1"; + clocks = <&sys_clk 12>, <&sys_clk 24>; + clock-names = "dbi", "ref"; + + resets = <&sys_rst 12>, <&sys_rst 24>; + reset-names = "dbi", "phy"; + phys = <&pcie_phy0>, <&pcie_phy1>, <&pcie_phy2>, <&pcie_phy3>; phy-names = "pcie0", "pcie1", "pcie2", "pcie3"; diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml index 9e96c6d0ef48..518fa5626c11 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml @@ -78,7 +78,25 @@ properties: - contains: const: msi - clocks: true + clocks: + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/clock-names + + resets: + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/reset-names additionalProperties: true diff --git a/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml index 1719a36952c0..8c2a8e8f96f9 100644 --- a/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml @@ -16,7 +16,8 @@ maintainers: - Kunihiko Hayashi allOf: - - $ref: /schemas/pci/snps,dw-pcie-ep.yaml# + - $ref: /schemas/pci/pci-ep.yaml# + - $ref: /schemas/pci/snps,dw-pcie-common.yaml# properties: compatible: -- 2.35.1 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 A5660C04A68 for ; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DW PCIe RP/EP reference manuals explicit define all the clocks and reset requirements in [1] and [2]. Seeing the DW PCIe vendor-specific DT-bindings have already started assigning random names to the same set of the clocks and resets lines, let's define a generic names sets and add them to the DW PCIe definitions in the common DT-schema. These definitions will be used in the generic DW PCIe DT-schema and can be referenced in the particular DW PCIe DT-bindings if they are compatible with them, otherwise the platforms can be left with already defined clocks/resets properties. [1] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe Root Port, Version 5.40a, March 2019, p.55 - 78. [2] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe Endpoint, Version 5.40a, March 2019, p.58 - 81. Signed-off-by: Serge Semin --- Changelog v3: - This is a new patch unpinned from the next one: https://lore.kernel.org/linux-pci/20220503214638.1895-2-Sergey.Semin@baikalelectronics.ru/ by the Rob' request. (@Rob) - Drop synonymous from the names list since the device schemas create their own enumerations anyway. --- .../bindings/pci/samsung,exynos-pcie.yaml | 3 +- .../bindings/pci/snps,dw-pcie-common.yaml | 100 ++++++++++++++++++ .../bindings/pci/snps,dw-pcie-ep.yaml | 26 +++++ .../devicetree/bindings/pci/snps,dw-pcie.yaml | 20 +++- .../pci/socionext,uniphier-pcie-ep.yaml | 3 +- 5 files changed, 149 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml index 445eed94b53f..fedb774938f4 100644 --- a/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml @@ -16,7 +16,8 @@ description: |+ snps,dw-pcie.yaml. allOf: - - $ref: /schemas/pci/snps,dw-pcie.yaml# + - $ref: /schemas/pci/pci-bus.yaml# + - $ref: /schemas/pci/snps,dw-pcie-common.yaml# properties: compatible: diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml index c6a55f90ddd5..f22fb01c9bd0 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml @@ -58,6 +58,36 @@ properties: minItems: 1 maxItems: 26 + clocks: + description: + DWC PCIe reference manual explicitly defines a set of the clocks required + to get the controller working correctly. In general all of them can + be divided into two groups':' application and core clocks. Note the + platforms may have some of the clock sources unspecified in case if the + corresponding domains are fed up from a common clock source. + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + + resets: + description: + DWC PCIe reference manual explicitly defines a set of the reset + signals required to be de-asserted to properly activate the controller + sub-parts. All of these signals can be divided into two sub-groups':' + application and core resets with respect to the main sub-domains they + are supposed to reset. Note the platforms may have some of these signals + unspecified in case if they are automatically handled or aggregated into + a comprehensive control module. + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + phys: description: There can be up to the number of possible lanes PHYs specified. @@ -218,4 +248,74 @@ definitions: uncorrectable error. const: sft_ue + clock-names: + description: + Reference clock names common for the DWC PCIe Root Port and Endpoint + controllers. + anyOf: + - description: + Data Bus Interface (DBI) clock. Clock signal for the AXI-bus + interface of the Configuration-Dependent Module, which is + basically the set of the controller CSRs. + const: dbi + - description: + Application AXI-bus Master interface clock. Basically this is + a clock for the controller DMA interface (PCI-to-CPU). + const: mstr + - description: + Application AXI-bus Slave interface clock. This is a clock for + the CPU-to-PCI memory IO interface. + const: slv + - description: + Controller Core-PCS PIPE interface clock. It's normally + supplied by an external PCS-PHY. + const: pipe + - description: + Controller Primary clock. It's assumed that all controller input + signals (except resets) are synchronous to this clock. + const: core + - description: + Auxiliary clock for the controller PMC domain. The controller + partitioning implies having some parts to operate with this + clock in some power management states. + const: aux + - description: + Generic reference clock. In case if there are several + interfaces fed up with a common clock source it's advisable to + define it with this name (for instance pipe, core and aux can + be connected to a single source of the periodic signal). + const: ref + - description: + Clock for the PHY registers interface. Originally this is + a PHY-viewport-based interface, but some platform may have + specifically designed one. + const: phy_reg + + reset-names: + description: + Reset signal names common for the DWC PCIe Root Port and Endpoint + controllers. + anyOf: + - description: Data Bus Interface (DBI) domain reset + const: dbi + - description: AXI-bus Master interface reset + const: mstr + - description: AXI-bus Slave interface reset + const: slv + - description: Controller Non-sticky CSR flags reset + const: non-sticky + - description: Controller sticky CSR flags reset + const: sticky + - description: PIPE-interface (Core-PCS) logic reset + const: pipe + - description: + Controller primary reset (resets everything except PMC module) + const: core + - description: PCS/PHY block reset + const: phy + - description: PMC hot reset signal + const: hot + - description: Cold reset signal + const: pwr + ... diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml index bfff723b529d..bb7e4381d392 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml @@ -74,6 +74,26 @@ properties: items: $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/interrupt-names + clocks: + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/clock-names + + resets: + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/reset-names + max-functions: maximum: 32 @@ -109,6 +129,12 @@ examples: interrupts = <23>, <24>; interrupt-names = "dma0", "dma1"; + clocks = <&sys_clk 12>, <&sys_clk 24>; + clock-names = "dbi", "ref"; + + resets = <&sys_rst 12>, <&sys_rst 24>; + reset-names = "dbi", "phy"; + phys = <&pcie_phy0>, <&pcie_phy1>, <&pcie_phy2>, <&pcie_phy3>; phy-names = "pcie0", "pcie1", "pcie2", "pcie3"; diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml index 9e96c6d0ef48..518fa5626c11 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml @@ -78,7 +78,25 @@ properties: - contains: const: msi - clocks: true + clocks: + minItems: 1 + maxItems: 7 + + clock-names: + minItems: 1 + maxItems: 7 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/clock-names + + resets: + minItems: 1 + maxItems: 10 + + reset-names: + minItems: 1 + maxItems: 10 + items: + $ref: /schemas/pci/snps,dw-pcie-common.yaml#/definitions/reset-names additionalProperties: true diff --git a/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml index 1719a36952c0..8c2a8e8f96f9 100644 --- a/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/socionext,uniphier-pcie-ep.yaml @@ -16,7 +16,8 @@ maintainers: - Kunihiko Hayashi allOf: - - $ref: /schemas/pci/snps,dw-pcie-ep.yaml# + - $ref: /schemas/pci/pci-ep.yaml# + - $ref: /schemas/pci/snps,dw-pcie-common.yaml# properties: compatible: -- 2.35.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel