From patchwork Tue Aug 30 12:20:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Conor Dooley X-Patchwork-Id: 12959247 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 4F4A2C0502C for ; Tue, 30 Aug 2022 12:21:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vD9kukk7szL5zllgfKFzu7VzC0nCQ2Z0wI8vIRR6pfo=; b=O+udJnDmm7ndNy m2eOJY4lLGroknLnPuov9pm6W9aS6IrIe8T6Rh7p9gvXE1neXofnpYGTzoV0IZY8le/8ZWS+gn5S/ R2um+4/bnkX6baNtcNXX+yjmspqEJ9DyJ6DaKTzM4tnVdPWkH1ztIPp0LJzi+ThrlNLhaT7kJg3FY u/TkoG/Bm0uvaIObkoID7GHsXgCDANaQ8sglL+5T598pXiw33z7AAOW+iDsAydABun/8nKC4oTarA d+vmmRwIwJxJ+AGIXIVD1hOB9pBLO5mfuosV6rt6e/JAHS82wo9PlLrK3Cty1POG92ROPbcQEjneG HmkAOKN+FeGi+VotdxJw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oT0FO-00GnBa-WD; Tue, 30 Aug 2022 12:21:39 +0000 Received: from esa.microchip.iphmx.com ([68.232.153.233]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oT0F3-00Gn3t-Jd for linux-riscv@lists.infradead.org; Tue, 30 Aug 2022 12:21:32 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1661862077; x=1693398077; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=TbYbqd7aTZtP9BqkPjjohaCeNbROPSiKKPHy/M7Hh8s=; b=m8OUl/o9o9lyFMq3Z0kZO2t3XDSZY9bT1w+s81hR8yhUpiDyOKChCK9d OKvNZ/fXKljs5zqoXiAZY8ClhggRG7gPsRU9EWidg46GK2UxGWSF8fcT2 yNbHgRBJneg+56rF+wYhtXZda3ilKVv9csNelg4ggMy8PkBINlgPoL96l vm8Yzxq7nEqjBHK0dxTA+KG4aCtwBxMQoopq/TuxJQgmduXwTdjvNDkCE hvWWUj+Cma4pB+LCxzFt91rYvBz8HYj9L3aACUTyx/iCnZRVG5nAcRlSc VLyKh5r6BpRzLHaG9j3g9jh+xcDVmkYS+abBsyZ63HEc+8l8Qtf2zcI9V A==; X-IronPort-AV: E=Sophos;i="5.93,274,1654585200"; d="scan'208";a="188635749" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 30 Aug 2022 05:21:16 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.12; Tue, 30 Aug 2022 05:21:16 -0700 Received: from wendy.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.12 via Frontend Transport; Tue, 30 Aug 2022 05:21:13 -0700 From: Conor Dooley To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Conor Dooley , Daire McNamara , Hugh Breslin CC: Paul Walmsley , Albert Ou , Claudiu Beznea , , , , , "Krzysztof Kozlowski" Subject: [PATCH v3 2/5] dt-bindings: clk: document PolarFire SoC fabric clocks Date: Tue, 30 Aug 2022 13:20:21 +0100 Message-ID: <20220830122023.2204485-3-conor.dooley@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220830122023.2204485-1-conor.dooley@microchip.com> References: <20220830122023.2204485-1-conor.dooley@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220830_052130_923717_92D159A9 X-CRM114-Status: GOOD ( 12.84 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On PolarFire SoC there are 4 PLL/DLL blocks, located in each of the ordinal corners of the chip, which our documentation refers to as "Clock Conditioning Circuitry". PolarFire SoC is an FPGA, these are highly configurable & many of the input clocks are optional. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Conor Dooley --- .../bindings/clock/microchip,mpfs-ccc.yaml | 80 +++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml diff --git a/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml b/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml new file mode 100644 index 000000000000..f1770360798f --- /dev/null +++ b/Documentation/devicetree/bindings/clock/microchip,mpfs-ccc.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/microchip,mpfs-ccc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip PolarFire SoC Fabric Clock Conditioning Circuitry + +maintainers: + - Conor Dooley + +description: | + Microchip PolarFire SoC has 4 Clock Conditioning Circuitry blocks. Each of + these blocks contains two PLLs and 2 DLLs & are located in the four corners of + the FPGA. For more information see "PolarFire SoC FPGA Clocking Resources" at: + https://onlinedocs.microchip.com/pr/GUID-8F0CC4C0-0317-4262-89CA-CE7773ED1931-en-US-1/index.html + +properties: + compatible: + const: microchip,mpfs-ccc + + reg: + items: + - description: PLL0's control registers + - description: PLL1's control registers + - description: DLL0's control registers + - description: DLL1's control registers + + clocks: + description: + The CCC PLL's have two input clocks. It is required that even if the input + clocks are identical that both are provided. + minItems: 2 + items: + - description: PLL0's refclk0 + - description: PLL0's refclk1 + - description: PLL1's refclk0 + - description: PLL1's refclk1 + - description: DLL0's refclk + - description: DLL1's refclk + + clock-names: + minItems: 2 + items: + - const: pll0_ref0 + - const: pll0_ref1 + - const: pll1_ref0 + - const: pll1_ref1 + - const: dll0_ref + - const: dll1_ref + + '#clock-cells': + const: 1 + description: | + The clock consumer should specify the desired clock by having the clock + ID in its "clocks" phandle cell. + See include/dt-bindings/clock/microchip,mpfs-clock.h for the full list of + PolarFire clock IDs. + +required: + - compatible + - reg + - clocks + - clock-names + - '#clock-cells' + +additionalProperties: false + +examples: + - | + clock-controller@38100000 { + compatible = "microchip,mpfs-ccc"; + reg = <0x38010000 0x1000>, <0x38020000 0x1000>, + <0x39010000 0x1000>, <0x39020000 0x1000>; + #clock-cells = <1>; + clocks = <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>, <&refclk_ccc>, + <&refclk_ccc>, <&refclk_ccc>; + clock-names = "pll0_ref0", "pll0_ref1", "pll1_ref0", "pll1_ref1", + "dll0_ref", "dll1_ref"; + };