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dmarc=none action=none header.from=nxp.com; Received: from AM7PR04MB7157.eurprd04.prod.outlook.com (2603:10a6:20b:118::20) by AM6PR04MB6279.eurprd04.prod.outlook.com (2603:10a6:20b:b7::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3195.17; Fri, 17 Jul 2020 04:22:52 +0000 Received: from AM7PR04MB7157.eurprd04.prod.outlook.com ([fe80::1101:adaa:ee89:af2a]) by AM7PR04MB7157.eurprd04.prod.outlook.com ([fe80::1101:adaa:ee89:af2a%3]) with mapi id 15.20.3174.026; Fri, 17 Jul 2020 04:22:52 +0000 From: Peter Chen To: shawnguo@kernel.org, robh+dt@kernel.org Subject: [PATCH v2 3/4] arm64: dts: imx8mm-evk: add two parameters for picophy tuning Date: Fri, 17 Jul 2020 12:22:25 +0800 Message-Id: <20200717042226.18495-3-peter.chen@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200717042226.18495-1-peter.chen@nxp.com> References: <20200717042226.18495-1-peter.chen@nxp.com> X-ClientProxiedBy: SG2PR0302CA0010.apcprd03.prod.outlook.com (2603:1096:3:2::20) To AM7PR04MB7157.eurprd04.prod.outlook.com (2603:10a6:20b:118::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from b29397-desktop.ap.freescale.net (119.31.174.67) by SG2PR0302CA0010.apcprd03.prod.outlook.com (2603:1096:3:2::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3195.9 via Frontend Transport; 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X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [40.107.21.62 listed in list.dnswl.org] -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [40.107.21.62 listed in wl.mailspike.net] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Peter Chen , linux-usb@vger.kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org With these two parameters tuning, it can pass USB eye diagram at evk board. Reviewed-by: Jun Li Signed-off-by: Peter Chen --- Changes for v2 - Address Shawn's comment to change subject. arch/arm64/boot/dts/freescale/imx8mm-evk.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts index 0f1d7f8aeac4..c432b628e1ed 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts @@ -324,6 +324,8 @@ srp-disable; adp-disable; usb-role-switch; + picophy,pre-emp-curr-control = <3>; + picophy,dc-vol-level-adjust = <7>; status = "okay"; port {