From patchwork Thu Jul 20 11:15:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Samin X-Patchwork-Id: 13320320 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A7350A5C for ; Thu, 20 Jul 2023 11:15:17 +0000 (UTC) Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 543DE2690; Thu, 20 Jul 2023 04:15:15 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 4A21824E0DF; Thu, 20 Jul 2023 19:15:12 +0800 (CST) Received: from EXMBX062.cuchost.com (172.16.6.62) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 20 Jul 2023 19:15:12 +0800 Received: from starfive-sdk.starfivetech.com (171.223.208.138) by EXMBX062.cuchost.com (172.16.6.62) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Thu, 20 Jul 2023 19:15:10 +0800 From: Samin Guo To: , , , Peter Geis , Frank CC: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Conor Dooley , Krzysztof Kozlowski , Andrew Lunn , Heiner Kallweit , "Russell King" , Samin Guo , "Yanhong Wang" Subject: [PATCH v5 1/2] dt-bindings: net: motorcomm: Add pad driver strength cfg Date: Thu, 20 Jul 2023 19:15:08 +0800 Message-ID: <20230720111509.21843-2-samin.guo@starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230720111509.21843-1-samin.guo@starfivetech.com> References: <20230720111509.21843-1-samin.guo@starfivetech.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [171.223.208.138] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX062.cuchost.com (172.16.6.62) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org The motorcomm phy (YT8531) supports the ability to adjust the drive strength of the rx_clk/rx_data. The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can be configured with hardware pull-up resistors to match the SOC voltage (usually 1.8V). The software can read the registers 0xA001 obtain the current LDO voltage value. Reviewed-by: Hal Feng Signed-off-by: Samin Guo Reviewed-by: Andrew Lunn Reviewed-by: Conor Dooley --- .../bindings/net/motorcomm,yt8xxx.yaml | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml index 157e3bbcaf6f..605be74f8556 100644 --- a/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml +++ b/Documentation/devicetree/bindings/net/motorcomm,yt8xxx.yaml @@ -52,6 +52,40 @@ properties: for a timer. type: boolean + motorcomm,rx-clk-drv-microamp: + description: | + drive strength of rx_clk rgmii pad. + The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can + be configured with hardware pull-up resistors to match the SOC voltage + (usually 1.8V). + The software can read the registers to obtain the LDO voltage and configure + the legal drive strength(curren). + ===================================================== + | voltage | curren Available (uA) | + | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 | + | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 | + ===================================================== + enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970, + 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ] + default: 2910 + + motorcomm,rx-data-drv-microamp: + description: | + drive strength of rx_data/rx_ctl rgmii pad. + The YT8531 RGMII LDO voltage supports 1.8V/3.3V, and the LDO voltage can + be configured with hardware pull-up resistors to match the SOC voltage + (usually 1.8V). + The software can read the registers to obtain the LDO voltage and configure + the legal drive strength(curren). + ===================================================== + | voltage | curren Available (uA) | + | 1.8v | 1200 2100 2700 2910 3110 3600 3970 4350 | + | 3.3v | 3070 4080 4370 4680 5020 5450 5740 6140 | + ===================================================== + enum: [ 1200, 2100, 2700, 2910, 3070, 3110, 3600, 3970, + 4080, 4350, 4370, 4680, 5020, 5450, 5740, 6140 ] + default: 2910 + motorcomm,tx-clk-adj-enabled: description: | This configuration is mainly to adapt to VF2 with JH7110 SoC.