soc: nxp: imxrt: imxrt7xx: update rt7xx soc files

Add functions to configure MIPI_DSI power and clock when
MIPI_DSI is enabled.

Signed-off-by: Kate Wang <[email protected]>

Author: KATE-WANG-NXP

soc/nxp/imxrt/imxrt7xx/cm33/soc.c

@@ -1,5 +1,5 @@
 /*
- * Copyright 2024 NXP
+ * Copyright 2024,2025 NXP
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -17,6 +17,8 @@
 #include <zephyr/linker/sections.h>
 #include <zephyr/cache.h>
 #include <soc.h>
+#include "fsl_power.h"
+#include "fsl_clock.h"
 
 void soc_early_init_hook(void)
 {
@@ -35,3 +37,73 @@ void soc_reset_hook(void)
 }
 
 #endif /* CONFIG_SOC_RESET_HOOK */
+
+#ifdef CONFIG_MIPI_DSI
+/* Weak so board can override this function */
+void __weak imxrt_pre_init_display_interface(void)
+{
+	/* Assert MIPI control reset. */
+	RESET_SetPeripheralReset(kMIPI_DSI_CTRL_RST_SHIFT_RSTn);
+
+	/* Disable MIPI DSI power down. */
+	POWER_DisablePD(kPDRUNCFG_APD_MIPIDSI);
+	POWER_DisablePD(kPDRUNCFG_PPD_MIPIDSI);
+	POWER_DisablePD(kPDRUNCFG_PD_VDD2_MIPI);
+
+	/* Apply power down configuration. */
+	POWER_ApplyPD();
+
+	/* Configure MIPY ESC clock. */
+	/* Use PLL PFD1 as clock source, 396m. */
+	CLOCK_AttachClk(kMAIN_PLL_PFD1_to_MIPI_DPHYESC_CLK);
+	/* RxClkEsc min 60MHz, TxClkEsc 12 to 20MHz. */
+	/* RxClkEsc = 396MHz / 6 = 66MHz. */
+	CLOCK_SetClkDiv(kCLOCK_DivDphyEscRxClk, 6);
+	/* TxClkEsc = 396MHz / 6 / 4 = 16.5MHz. */
+	CLOCK_SetClkDiv(kCLOCK_DivDphyEscTxClk, 4);
+
+#ifdef CONFIG_MIPI_DBI
+	/* When using LCDIF, with 279.53MHz DBI source clock and 16bpp format, a 14 wr
+	 * period requires a 279.53MHz / 14 * 16 = 319.46Mhz DPHY clk source. Considering
+	 * the DCS packaging cost, the MIPI DPHY speed shall be ***SLIGHTLY*** larger
+	 * than the DBI interface speed. DPHY uses AUDIO_PLL_PFD2 which is 532.48MHz as
+	 * source, the frequency is 532.48 * 18 / 30 = 319.49MHz, which meets the
+	 * requirement.
+	 */
+	uint32_t mipiDsiDphyBitClkFreq_Hz =
+			DT_PROP(DT_NODELABEL(lcdif), clock_frequency) /
+			DT_PROP_OR(DT_NODELABEL(lcdif), divider, 1) /
+			DT_PROP(DT_NODELABEL(lcdif), wr_period) * 16U;
+#else
+	/* The DPHY bit clock must be fast enough to send out the pixels, it should be
+	 * larger than:
+	 * (Pixel clock * bit per output pixel) / number of MIPI data lane
+	 * DPHY uses AUDIO pll pfd2 as aource, and its max allowed clock frequency is
+	 * 532.48 x 18 / 16 = 599.04MHz. The MIPI panel supports up to 850MHz bit clock.
+	 */
+	uint32_t mipiDsiDphyBitClkFreq_Hz = DT_PROP(DT_NODELABEL(mipi_dsi), phy_clock);
+#endif
+	uint8_t clockDiv = (uint8_t)((uint64_t)CLOCK_GetAudioPllFreq() * 18U /
+					(uint64_t)mipiDsiDphyBitClkFreq_Hz);
+
+	CLOCK_InitAudioPfd(kCLOCK_Pfd2, clockDiv);
+
+	CLOCK_AttachClk(kAUDIO_PLL_PFD2_to_MIPI_DSI_HOST_PHY);
+	CLOCK_SetClkDiv(kCLOCK_DivDphyClk, 1);
+}
+
+void __weak imxrt_post_init_display_interface(void)
+{
+	/* Clear MIPI control reset. */
+	RESET_ClearPeripheralReset(kMIPI_DSI_CTRL_RST_SHIFT_RSTn);
+}
+
+void __weak imxrt_deinit_display_interface(void)
+{
+	/* Assert MIPI DSI reset */
+	RESET_SetPeripheralReset(kMIPI_DSI_CTRL_RST_SHIFT_RSTn);
+	/* Remove clock from DPHY */
+	CLOCK_AttachClk(kNONE_to_MIPI_DSI_HOST_PHY);
+}
+
+#endif

soc/nxp/imxrt/imxrt7xx/cm33/soc.h

@@ -33,6 +33,14 @@ extern "C" {
 void xspi_clock_safe_config(void);
 void xspi_setup_clock(XSPI_Type *base, uint32_t src, uint32_t divider);
 
+#ifdef CONFIG_MIPI_DSI
+void imxrt_pre_init_display_interface(void);
+
+void imxrt_post_init_display_interface(void);
+
+void imxrt_deinit_display_interface(void);
+#endif
+
 #ifdef __cplusplus
 }
 #endif