1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _TEGRA_MIPI_PHY_H 3 #define _TEGRA_MIPI_PHY_H 4 5 /* 6 * Macros for calculating the phy timings 7 */ 8 /* Period of one bit time in nano seconds */ 9 #define DSI_TBIT_Factorized(Freq) (((1000) * (1000))/(Freq)) 10 #define DSI_TBIT(Freq) (DSI_TBIT_Factorized(Freq)/(1000)) 11 12 //#define NV_MAX(a,b) (((a) > (b)) ? (a) : (b)) 13 14 /* Period of one byte time in nano seconds */ 15 #define DSI_TBYTE(Freq) ((DSI_TBIT_Factorized(Freq)) * (8)) 16 #define DSI_PHY_TIMING_DIV(X, Freq) ((X*1000) / (DSI_TBYTE(Freq))) 17 18 /* 19 * As per Mipi spec (minimum): 20 * (3 + MAX(8 * DSI_TBIT, 60 + 4 * DSI_TBIT) / DSI_TBYTE) 21 */ 22 #define DSI_THSTRAIL_VAL(Freq) \ 23 (MAX(((8) * (DSI_TBIT(Freq))), ((60) + ((4) * (DSI_TBIT(Freq)))))) 24 25 int mipi_dphy_set_timing(struct tegra_dsi *dsi); 26 27 #endif 28