1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/st/ddr/stm32mp_ram.c b/drivers/st/ddr/stm32mp_ram.c
new file mode 100644
index 0000000..0804568
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ram.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <common/debug.h>
+#include <common/fdt_wrappers.h>
+#include <drivers/st/stm32mp_ram.h>
+#include <libfdt.h>
+
+#include <platform_def.h>
+
+int stm32mp_ddr_dt_get_info(void *fdt, int node, struct stm32mp_ddr_info *info)
+{
+	int ret;
+
+	ret = fdt_read_uint32(fdt, node, "st,mem-speed", &info->speed);
+	if (ret < 0) {
+		VERBOSE("%s: no st,mem-speed\n", __func__);
+		return -EINVAL;
+	}
+	ret = fdt_read_uint32(fdt, node, "st,mem-size", &info->size);
+	if (ret < 0) {
+		VERBOSE("%s: no st,mem-size\n", __func__);
+		return -EINVAL;
+	}
+	info->name = fdt_getprop(fdt, node, "st,mem-name", NULL);
+	if (info->name == NULL) {
+		VERBOSE("%s: no st,mem-name\n", __func__);
+		return -EINVAL;
+	}
+
+	INFO("RAM: %s\n", info->name);
+
+	return 0;
+}
+
+int stm32mp_ddr_dt_get_param(void *fdt, int node, const struct stm32mp_ddr_param *param,
+			     uint32_t param_size, uintptr_t config)
+{
+	int ret;
+	uint32_t idx;
+
+	for (idx = 0U; idx < param_size; idx++) {
+		ret = fdt_read_uint32_array(fdt, node, param[idx].name, param[idx].size,
+					    (void *)(config + param[idx].offset));
+
+		VERBOSE("%s: %s[0x%x] = %d\n", __func__, param[idx].name, param[idx].size, ret);
+		if (ret != 0) {
+			ERROR("%s: Cannot read %s, error=%d\n", __func__, param[idx].name, ret);
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}