From patchwork Mon Mar 13 22:50:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 662771 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 34D80C6FD19 for ; Mon, 13 Mar 2023 22:53:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230186AbjCMWxD (ORCPT ); Mon, 13 Mar 2023 18:53:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58632 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230234AbjCMWwx (ORCPT ); Mon, 13 Mar 2023 18:52:53 -0400 Received: from post.baikalelectronics.com (post.baikalelectronics.com [213.79.110.86]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 872208C0DA; Mon, 13 Mar 2023 15:52:15 -0700 (PDT) Received: from post.baikalelectronics.com (localhost.localdomain [127.0.0.1]) by post.baikalelectronics.com (Proxmox) with ESMTP id 79972E0EB6; Tue, 14 Mar 2023 01:51:14 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= baikalelectronics.ru; h=cc:cc:content-transfer-encoding :content-type:content-type:date:from:from:in-reply-to:message-id :mime-version:references:reply-to:subject:subject:to:to; s=post; bh=kB5Ypu9uI3/FVnScRsT5+ZCB/6/xGkijVX1+bsbiHl8=; b=AEiiwI5J1GW3 D/CidPHbAkj76a8RRcOgx654EoNK2OStvsjMtS4MEDlWxcM8AZMYkpHGHJ26Jleb 5WRkgKgzT+IEOYdGquZxV0kmd/1GbW/hVCKvLrBwTDIRFXbVpulymvcCiMjCF3DP LQeGU7zYIPNRS5PWZ1Qo2az1Js2YFX0= Received: from mail.baikal.int (mail.baikal.int [192.168.51.25]) by post.baikalelectronics.com (Proxmox) with ESMTP id 63DCDE0E6A; Tue, 14 Mar 2023 01:51:14 +0300 (MSK) Received: from localhost (10.8.30.10) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Tue, 14 Mar 2023 01:51:13 +0300 From: Serge Semin To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Rob Herring , Krzysztof Kozlowski CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , Christian Marangi , Richard Cochran , Biao Huang , Yang Yingliang , , , , , Subject: [PATCH net-next 05/16] dt-bindings: net: dwmac: Elaborate snps,clk-csr description Date: Tue, 14 Mar 2023 01:50:52 +0300 Message-ID: <20230313225103.30512-6-Sergey.Semin@baikalelectronics.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230313225103.30512-1-Sergey.Semin@baikalelectronics.ru> References: <20230313225103.30512-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-Originating-IP: [10.8.30.10] X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The property is utilized to set the CSR-MDC clock selector in the STMMAC driver. The specified value is used instead of auto-detecting the CSR/application clocks divider based on the reference clock rate. Let's add a more detailed description to clarify the property purpose and permitted values. In the later case the constraints are specified based on the DW *MAC CR registers permitted values. Signed-off-by: Serge Semin Acked-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/net/snps,dwmac.yaml | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 224f8f70db85..edef405766e4 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -427,7 +427,15 @@ properties: snps,clk-csr: $ref: /schemas/types.yaml#/definitions/uint32 description: - Frequency division factor for MDC clock. + CSR-MDC clock selector. It sets up a divider of the CSR/application + clock to create an MDC signal with desired frequency. Note the + property value doesn't specify the divider itself by encodes the + corresponding divider value specific to the IP-core. + DW GMAC 0 - 42, 1 - 62, 2 - 16, 3 - 26, 4 - 102, 5 - 124, 8 - 4, + 9 - 6, 10 - 8, 11 - 10, 12 - 12, 13 - 14, 14 - 16, 15 - 18. + DW xGMAC 0 - 62, 1 - 102, 2 - 122, 3 - 142, 4 - 162, 5 - 202. + minimum: 0 + maximum: 15 mdio: $ref: mdio.yaml#