mb/google/cherry: Add DRAM calibration support

Initialize and calibrate DRAM in romstage.

Signed-off-by: Ryan Chuang <ryan.chuang@mediatek.com>
Change-Id: Ib7677baef126ee60bf35da3a4eaf720eaa118a27
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54269
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/mainboard/google/cherry/sdram_configs.c b/src/mainboard/google/cherry/sdram_configs.c
new file mode 100644
index 0000000000..de6bdd1f05
--- /dev/null
+++ b/src/mainboard/google/cherry/sdram_configs.c
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <soc/dramc_param.h>
+
+const struct sdram_info *get_sdram_config(void)
+{
+	/*
+	 * The MT8195 platform supports "dram adaptive" feature to
+	 * automatically detect dram information, including channel, rank, die size...,
+	 * and can automatically configure EMI settings.
+	 * So we will be passing a placeholder param blob.
+	 */
+	static struct sdram_info params;
+	return &params;
+}