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Sat, 2 Apr 2022 04:02:08 +0000 From: Liu Ying To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v6 2/5] phy: Add LVDS configuration options Date: Sat, 2 Apr 2022 12:03:22 +0800 Message-Id: <20220402040325.2465222-3-victor.liu@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220402040325.2465222-1-victor.liu@nxp.com> References: <20220402040325.2465222-1-victor.liu@nxp.com> X-ClientProxiedBy: SGAP274CA0011.SGPP274.PROD.OUTLOOK.COM (2603:1096:4:b6::23) To AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3434764e-ac0e-4fc5-091a-08da145d8e46 X-MS-TrafficTypeDiagnostic: HE1PR04MB3210:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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The parameters added here are based on common LVDS PHY implementation practices. The set of parameters should cover all potential users. Cc: Kishon Vijay Abraham I Cc: Vinod Koul Cc: NXP Linux Team Signed-off-by: Liu Ying --- v5->v6: * Rebase upon v5.17-rc1. v4->v5: * Align kernel-doc style to include/linux/phy/phy.h. (Vinod) * Trivial tweaks. * Drop Robert's R-b tag. v3->v4: * Add Robert's R-b tag. v2->v3: * No change. v1->v2: * No change. include/linux/phy/phy-lvds.h | 32 ++++++++++++++++++++++++++++++++ include/linux/phy/phy.h | 4 ++++ 2 files changed, 36 insertions(+) create mode 100644 include/linux/phy/phy-lvds.h diff --git a/include/linux/phy/phy-lvds.h b/include/linux/phy/phy-lvds.h new file mode 100644 index 000000000000..7a2f4747f624 --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020 NXP + */ + +#ifndef __PHY_LVDS_H_ +#define __PHY_LVDS_H_ + +/** + * struct phy_configure_opts_lvds - LVDS configuration set + * @bits_per_lane_and_dclk_cycle: Number of bits per data lane and + * differential clock cycle. + * @differential_clk_rate: Clock rate, in Hertz, of the LVDS + * differential clock. + * @lanes: Number of active, consecutive, + * data lanes, starting from lane 0, + * used for the transmissions. + * @is_slave: Boolean, true if the phy is a slave + * which works together with a master + * phy to support dual link transmission, + * otherwise a regular phy or a master phy. + * + * This structure is used to represent the configuration state of a LVDS phy. + */ +struct phy_configure_opts_lvds { + unsigned int bits_per_lane_and_dclk_cycle; + unsigned long differential_clk_rate; + unsigned int lanes; + bool is_slave; +}; + +#endif /* __PHY_LVDS_H_ */ diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index f3286f4cd306..b1413757fcc3 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -17,6 +17,7 @@ #include #include +#include #include struct phy; @@ -57,10 +58,13 @@ enum phy_media { * the MIPI_DPHY phy mode. * @dp: Configuration set applicable for phys supporting * the DisplayPort protocol. + * @lvds: Configuration set applicable for phys supporting + * the LVDS phy mode. */ union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; struct phy_configure_opts_dp dp; + struct phy_configure_opts_lvds lvds; }; /**