4  * SPDX-License-Identifier: Apache-2.0
20 /* Max output frequency of DPHY bit clock */
38 /* MAX DSI TX payload */
56 	 * bit clock for a given target frequency, such that the DPHY clock  in dsi_mcux_best_clock()
57 	 * is faster than the target frequency. MCUX SDK implements a similar  in dsi_mcux_best_clock()
59 	 * configure the DPHY to output the closest realizable clock frequency  in dsi_mcux_best_clock()
61 	 * the output frequency is less than the requested one.  in dsi_mcux_best_clock()
69 	 * The formula for the DPHY output frequency is:  in dsi_mcux_best_clock()
75 		/* Determine VCO output frequency before CO divider */  in dsi_mcux_best_clock()
78 		/* If desired VCO output frequency is too low, try next CO shift */  in dsi_mcux_best_clock()
83 		/* If desired VCO output frequency is too high, no point in  in dsi_mcux_best_clock()
90 		/* Search the best CN and CM values for desired VCO frequency */  in dsi_mcux_best_clock()
94 			/* If the frequency after input divider is too high,  in dsi_mcux_best_clock()
101 			/* If the frequency after input divider is too low,  in dsi_mcux_best_clock()
108 			/* Get the closest CM value for this vco frequency  in dsi_mcux_best_clock()
114 			cm = (vco_freq + (refclk_cn_freq - 1)) / refclk_cn_freq;  in dsi_mcux_best_clock()
128 			/* Calculate candidate frequency */  in dsi_mcux_best_clock()
132 				/* SKIP frequencies less than target frequency.  in dsi_mcux_best_clock()
138 				if ((cand_freq - target_freq) < best_diff) {  in dsi_mcux_best_clock()
140 					best_diff = (cand_freq - target_freq);  in dsi_mcux_best_clock()
161 	const struct display_mcux_mipi_dsi_config *config = dev->config;  in dsi_mcux_attach()
169 	dsi_config.numLanes = mdev->data_lanes;  in dsi_mcux_attach()
170 	dsi_config.autoInsertEoTp = config->auto_insert_eotp;  in dsi_mcux_attach()
173 	DSI_Init((MIPI_DSI_Type *)&config->base, &dsi_config);  in dsi_mcux_attach()
180 	 *         (Pixel clock * bit per output pixel) / number of MIPI data lane  in dsi_mcux_attach()
183 	/* Find the best realizable clock value for the MIPI DSI */  in dsi_mcux_attach()
185 		dsi_mcux_best_clock(mipi_dsi_dphy_ref_clk_hz, config->phy_clock);  in dsi_mcux_attach()
188 		return -ENOTSUP;  in dsi_mcux_attach()
190 	/* Cap clock value to max frequency */  in dsi_mcux_attach()
198 	mipi_dsi_dphy_bit_clk_hz = DSI_InitDphy((MIPI_DSI_Type *)&config->base,  in dsi_mcux_attach()
203 	 * If nxp,lcdif node is present, then the MIPI DSI driver will  in dsi_mcux_attach()
206 	 * constantly refresh the MIPI panel.  in dsi_mcux_attach()
208 	if (mdev->mode_flags & MIPI_DSI_MODE_VIDEO) {  in dsi_mcux_attach()
210 		DSI_SetDpiConfig((MIPI_DSI_Type *)&config->base,  in dsi_mcux_attach()
211 				&config->dpi_config, mdev->data_lanes,  in dsi_mcux_attach()
223 	const struct display_mcux_mipi_dsi_config *config = dev->config;  in dsi_mcux_transfer()
228 	dsi_xfer.txDataSize = msg->tx_len;  in dsi_mcux_transfer()
229 	dsi_xfer.txData = msg->tx_buf;  in dsi_mcux_transfer()
230 	dsi_xfer.rxDataSize = msg->rx_len;  in dsi_mcux_transfer()
231 	dsi_xfer.rxData = msg->rx_buf;  in dsi_mcux_transfer()
233 	switch (msg->type) {  in dsi_mcux_transfer()
237 		return -ENOTSUP;  in dsi_mcux_transfer()
240 		dsi_xfer.dscCmd = msg->cmd;  in dsi_mcux_transfer()
245 		dsi_xfer.dscCmd = msg->cmd;  in dsi_mcux_transfer()
250 		dsi_xfer.dscCmd = msg->cmd;  in dsi_mcux_transfer()
260 					(DSI_TX_MAX_PAYLOAD_BYTE - 6));  in dsi_mcux_transfer()
280 		return -ENOTSUP;  in dsi_mcux_transfer()
282 		LOG_ERR("Unsupported message type (%d)", msg->type);  in dsi_mcux_transfer()
283 		return -ENOTSUP;  in dsi_mcux_transfer()
286 	status = DSI_TransferBlocking(&config->base, &dsi_xfer);  in dsi_mcux_transfer()
290 		return -EIO;  in dsi_mcux_transfer()
293 	if (msg->rx_len != 0) {  in dsi_mcux_transfer()