1 files changed, 56 insertions, 0 deletions
diff --git a/include/dbsc5.h b/include/dbsc5.h
new file mode 100644
index 00000000000..cec937d89e7
--- /dev/null
+++ b/include/dbsc5.h
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2024-2025 Renesas Electronics Corp.
+ */
+
+#ifndef __INCLUDE_DBSC5_H__
+#define __INCLUDE_DBSC5_H__
+
+/* The number of channels V4H has */
+#define DRAM_CH_CNT			4
+/* The number of slices V4H has */
+#define SLICE_CNT			2
+/* The number of chip select V4H has */
+#define CS_CNT				2
+
+struct renesas_dbsc5_board_config {
+	/* Channels in use */
+	u8 bdcfg_phyvalid;
+	/* Read vref (SoC) training range */
+	u32 bdcfg_vref_r;
+	/* Write vref (MR14, MR15) training range */
+	u16 bdcfg_vref_w;
+	/* CA vref (MR12) training range */
+	u16 bdcfg_vref_ca;
+	/* RFM required check */
+	bool bdcfg_rfm_chk;
+
+	/* Board parameter about channels */
+	struct {
+		/*
+		 * 0x00:  4Gb dual channel die /  2Gb single channel die
+		 * 0x01:  6Gb dual channel die /  3Gb single channel die
+		 * 0x02:  8Gb dual channel die /  4Gb single channel die
+		 * 0x03: 12Gb dual channel die /  6Gb single channel die
+		 * 0x04: 16Gb dual channel die /  8Gb single channel die
+		 * 0x05: 24Gb dual channel die / 12Gb single channel die
+		 * 0x06: 32Gb dual channel die / 16Gb single channel die
+		 * 0x07: 24Gb single channel die
+		 * 0x08: 32Gb single channel die
+		 * 0xFF: NO_MEMORY
+		 */
+		u8 bdcfg_ddr_density[CS_CNT];
+		/* SoC caX([6][5][4][3][2][1][0]) -> MEM caY: */
+		u32 bdcfg_ca_swap;
+		/* SoC dqsX([1][0]) -> MEM dqsY: */
+		u8 bdcfg_dqs_swap;
+		/* SoC dq([7][6][5][4][3][2][1][0]) -> MEM dqY/dm:  (8 means DM) */
+		u32 bdcfg_dq_swap[SLICE_CNT];
+		/* SoC dm -> MEM dqY/dm:  (8 means DM) */
+		u8 bdcfg_dm_swap[SLICE_CNT];
+		/* SoC ckeX([1][0]) -> MEM csY */
+		u8 bdcfg_cs_swap;
+	} ch[4];
+};
+
+#endif	/* __INCLUDE_DBSC5_H__ */