diff --git a/drivers/nxp/ddr/phy-gen1/phy.c b/drivers/nxp/ddr/phy-gen1/phy.c
new file mode 100644
index 0000000..4b66d38
--- /dev/null
+++ b/drivers/nxp/ddr/phy-gen1/phy.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <common/debug.h>
+#include <ddr.h>
+
+static void cal_ddr_sdram_clk_cntl(struct ddr_cfg_regs *regs,
+					 const struct memctl_opt *popts)
+{
+	const unsigned int clk_adj = popts->clk_adj;
+	const unsigned int ss_en = 0U;
+
+	regs->clk_cntl = ((ss_en & U(0x1)) << 31U)		|
+				  ((clk_adj & U(0x1F)) << 22U);
+	debug("clk_cntl = 0x%x\n", regs->clk_cntl);
+}
+
+static void cal_ddr_cdr(struct ddr_cfg_regs *regs,
+			const struct memctl_opt *popts)
+{
+	regs->cdr[0] = popts->ddr_cdr1;
+	regs->cdr[1] = popts->ddr_cdr2;
+	debug("cdr[0] = 0x%x\n", regs->cdr[0]);
+	debug("cdr[1] = 0x%x\n", regs->cdr[1]);
+}
+
+static void cal_ddr_wrlvl_cntl(struct ddr_cfg_regs *regs,
+				const struct memctl_opt *popts)
+{
+	const unsigned int wrlvl_en = 1U;	/* enabled */
+	const unsigned int wrlvl_mrd = U(0x6);	/* > 40nCK */
+	const unsigned int wrlvl_odten = U(0x7);	/* 128 */
+	const unsigned int wrlvl_dqsen = U(0x5);	/* > 25nCK */
+	const unsigned int wrlvl_wlr = U(0x6);	/* > tWLO + 6 */
+	const unsigned int wrlvl_smpl = popts->wrlvl_override ?
+					popts->wrlvl_sample : U(0xf);
+	const unsigned int wrlvl_start = popts->wrlvl_start;
+
+	regs->wrlvl_cntl[0] = ((wrlvl_en & U(0x1)) << 31U)	|
+				  ((wrlvl_mrd & U(0x7)) << 24U)	|
+				  ((wrlvl_odten & U(0x7)) << 20U)	|
+				  ((wrlvl_dqsen & U(0x7)) << 16U)	|
+				  ((wrlvl_smpl & U(0xf)) << 12U)	|
+				  ((wrlvl_wlr & U(0x7)) << 8U)	|
+				  ((wrlvl_start & U(0x1F)) << 0U);
+	regs->wrlvl_cntl[1] = popts->wrlvl_ctl_2;
+	regs->wrlvl_cntl[2] = popts->wrlvl_ctl_3;
+	debug("wrlvl_cntl[0] = 0x%x\n", regs->wrlvl_cntl[0]);
+	debug("wrlvl_cntl[1] = 0x%x\n", regs->wrlvl_cntl[1]);
+	debug("wrlvl_cntl[2] = 0x%x\n", regs->wrlvl_cntl[2]);
+
+}
+
+static void cal_ddr_dbg(struct ddr_cfg_regs *regs,
+			const struct memctl_opt *popts)
+{
+	if (popts->cswl_override != 0) {
+		regs->debug[18] = popts->cswl_override;
+	}
+
+#ifdef CONFIG_SYS_FSL_DDR_EMU
+	/* disable DDR training for emulator */
+	regs->debug[2] = U(0x00000400);
+	regs->debug[4] = U(0xff800800);
+	regs->debug[5] = U(0x08000800);
+	regs->debug[6] = U(0x08000800);
+	regs->debug[7] = U(0x08000800);
+	regs->debug[8] = U(0x08000800);
+#endif
+	if (popts->cpo_sample != 0U) {
+		regs->debug[28] = popts->cpo_sample;
+		debug("debug[28] = 0x%x\n", regs->debug[28]);
+	}
+}
+
+int compute_ddr_phy(struct ddr_info *priv)
+{
+	const struct memctl_opt *popts = &priv->opt;
+	struct ddr_cfg_regs *regs = &priv->ddr_reg;
+
+	cal_ddr_sdram_clk_cntl(regs, popts);
+	cal_ddr_cdr(regs, popts);
+	cal_ddr_wrlvl_cntl(regs, popts);
+	cal_ddr_dbg(regs, popts);
+
+	return 0;
+}