From 3abfaefb9a6dda5e0bfa6160f55abfd0e32d8b0a Mon Sep 17 00:00:00 2001 From: Liu Ying Date: Tue, 19 Apr 2022 09:08:49 +0800 Subject: [PATCH] phy: Add LVDS configuration options This patch allows LVDS PHYs to be configured through the generic functions and through a custom structure added to the generic union. 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 Link: https://lore.kernel.org/r/20220419010852.452169-3-victor.liu@nxp.com Signed-off-by: Vinod Koul --- 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..09931d080a6d --- /dev/null +++ b/include/linux/phy/phy-lvds.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2020,2022 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 lane per 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; }; /**