Merge git://git.denx.de/u-boot-marvell

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/ddr/marvell/a38x/mv_ddr_common.c b/drivers/ddr/marvell/a38x/mv_ddr_common.c
new file mode 100644
index 0000000000..7afabbfd88
--- /dev/null
+++ b/drivers/ddr/marvell/a38x/mv_ddr_common.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) Marvell International Ltd. and its affiliates
+ */
+
+#include "mv_ddr_common.h"
+#include "ddr_ml_wrapper.h"
+
+void mv_ddr_ver_print(void)
+{
+	printf("%s %s\n", mv_ddr_version_string, mv_ddr_build_message);
+}
+
+/* ceiling division for positive integers */
+unsigned int ceil_div(unsigned int x, unsigned int y)
+{
+	return (x % y) ? (x / y + 1) : (x / y);
+}
+
+/*
+ * time to number of clocks calculation based on the rounding algorithm
+ * using 97.4% inverse factor per JEDEC Standard No. 21-C, 4.1.2.L-4:
+ * Serial Presence Detect (SPD) for DDR4 SDRAM Modules
+ */
+unsigned int time_to_nclk(unsigned int t, unsigned int tclk)
+{
+	/* t & tclk parameters are in ps */
+	return ((unsigned long)t * 1000 / tclk + 974) / 1000;
+}
+
+/* round division of two positive integers to the nearest whole number */
+int round_div(unsigned int dividend, unsigned int divisor, unsigned int *quotient)
+{
+	if (quotient == NULL) {
+		printf("%s: error: NULL quotient pointer found\n", __func__);
+		return MV_FAIL;
+	}
+
+	if (divisor == 0) {
+		printf("%s: error: division by zero\n", __func__);
+		return MV_FAIL;
+	} else {
+		*quotient = (dividend + divisor / 2) / divisor;
+	}
+
+	return MV_OK;
+}