/* SPDX-License-Identifier: GPL-2.0-only */ /* This file is part of the coreboot project. */ #ifndef _TEGRA_MIPI_PHY_H #define _TEGRA_MIPI_PHY_H /* * Macros for calculating the phy timings */ /* Period of one bit time in nano seconds */ #define DSI_TBIT_Factorized(Freq) (((1000) * (1000))/(Freq)) #define DSI_TBIT(Freq) (DSI_TBIT_Factorized(Freq)/(1000)) //#define NV_MAX(a,b) (((a) > (b)) ? (a) : (b)) /* Period of one byte time in nano seconds */ #define DSI_TBYTE(Freq) ((DSI_TBIT_Factorized(Freq)) * (8)) #define DSI_PHY_TIMING_DIV(X, Freq) ((X*1000) / (DSI_TBYTE(Freq))) /* * As per Mipi spec (minimum): * (3 + MAX(8 * DSI_TBIT, 60 + 4 * DSI_TBIT) / DSI_TBYTE) */ #define DSI_THSTRAIL_VAL(Freq) \ (MAX(((8) * (DSI_TBIT(Freq))), ((60) + ((4) * (DSI_TBIT(Freq)))))) int mipi_dphy_set_timing(struct tegra_dsi *dsi); #endif