soc/mediatek: Move common definitions to dramc_soc_common.h

Some definitions are the same in dramc_soc.h for MT8192, MT8195 and
MT8186, so we move them to dramc_soc_common.h

TEST=build pass
BUG=b:236331724

Signed-off-by: Bo-Chen Chen <rex-bc.chen@mediatek.com>
Change-Id: I3095333e62abf98de1f2d27033baeeba7a4cad79
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66276
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/soc/mediatek/common/include/soc/dramc_soc_common.h b/src/soc/mediatek/common/include/soc/dramc_soc_common.h
new file mode 100644
index 000000000000..8898709f4b35
--- /dev/null
+++ b/src/soc/mediatek/common/include/soc/dramc_soc_common.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef __SOC_MEDIATEK_DRAMC_SOC_COMMON_H__
+#define __SOC_MEDIATEK_DRAMC_SOC_COMMON_H__
+
+/*
+ * Internal CBT mode enum
+ * 1. Calibration flow uses vGet_Dram_CBT_Mode to
+ *    differentiate between mixed vs non-mixed LP4
+ * 2. Declared as dram_cbt_mode[RANK_MAX] internally to
+ *    store each rank's CBT mode type
+ */
+typedef enum {
+	CBT_NORMAL_MODE = 0,
+	CBT_BYTE_MODE1,
+} DRAM_CBT_MODE_T;
+
+#define DQS_NUMBER_LP4		2
+#define DQS_BIT_NUMBER		8
+#define DQ_DATA_WIDTH_LP4	16
+
+#endif	/* __SOC_MEDIATEK_DRAMC_SOC_COMMON_H__ */