ram: rockchip: add phy driver code for PX30

This sdram_phy_px30.c is based on PX30 SoC, the functions are common
for phy, other SoCs with similar hardware could re-use it.

Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>

2 files changed, 121 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-rockchip/sdram_phy_px30.h b/arch/arm/include/asm/arch-rockchip/sdram_phy_px30.h
new file mode 100644
index 0000000000..c75a633c91
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_phy_px30.h
@@ -0,0 +1,62 @@
+/* SPDX-License-Identifier:     GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef _ASM_ARCH_SDRAM_PHY_PX30_H
+#define _ASM_ARCH_SDRAM_PHY_PX30_H
+#include <asm/arch-rockchip/sdram_common.h>
+#include <asm/arch-rockchip/sdram_phy_ron_rtt_px30.h>
+
+struct ddr_phy_regs {
+	u32 phy[5][2];
+};
+
+#define PHY_REG(base, n)		((base) + 4 * (n))
+
+/* PHY_REG0 */
+#define DIGITAL_DERESET			BIT(3)
+#define ANALOG_DERESET			BIT(2)
+#define DIGITAL_RESET			(0 << 3)
+#define ANALOG_RESET			(0 << 2)
+
+/* PHY_REG1 */
+#define PHY_DDR2			(0)
+#define PHY_LPDDR2			(1)
+#define PHY_DDR3			(2)
+#define PHY_LPDDR3			(3)
+#define PHY_DDR4			(4)
+#define PHY_BL_4			(0 << 2)
+#define PHY_BL_8			BIT(2)
+
+/* PHY_REG2 */
+#define PHY_DTT_EN			BIT(0)
+#define PHY_DTT_DISB			(0 << 0)
+#define PHY_WRITE_LEVELING_EN		BIT(2)
+#define PHY_WRITE_LEVELING_DISB		(0 << 2)
+#define PHY_SELECT_CS0			(2)
+#define PHY_SELECT_CS1			(1)
+#define PHY_SELECT_CS0_1		(0)
+#define PHY_WRITE_LEVELING_SELECTCS(n)	((n) << 6)
+#define PHY_DATA_TRAINING_SELECTCS(n)	((n) << 4)
+
+struct ddr_phy_skew {
+	u32 a0_a1_skew[15];
+	u32 cs0_dm0_skew[11];
+	u32 cs0_dm1_skew[11];
+	u32 cs0_dm2_skew[11];
+	u32 cs0_dm3_skew[11];
+	u32 cs1_dm0_skew[11];
+	u32 cs1_dm1_skew[11];
+	u32 cs1_dm2_skew[11];
+	u32 cs1_dm3_skew[11];
+};
+
+void phy_soft_reset(void __iomem *phy_base);
+void phy_dram_set_bw(void __iomem *phy_base, u32 bw);
+void phy_cfg(void __iomem *phy_base,
+	     struct ddr_phy_regs *phy_regs, struct ddr_phy_skew *skew,
+	     struct sdram_base_params *base, u32 bw);
+int phy_data_training(void __iomem *phy_base, u32 cs, u32 dramtype);
+
+#endif
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_phy_ron_rtt_px30.h b/arch/arm/include/asm/arch-rockchip/sdram_phy_ron_rtt_px30.h
new file mode 100644
index 0000000000..9c15232047
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_phy_ron_rtt_px30.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier:     GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Rockchip Electronics Co., Ltd
+ */
+
+#ifndef _ASM_ARCH_SDRAM_PHY_RON_RTT_PX30_H
+#define _ASM_ARCH_SDRAM_PHY_RON_RTT_PX30_H
+
+#define PHY_DDR3_RON_RTT_DISABLE	(0)
+#define PHY_DDR3_RON_RTT_451ohm		(1)
+#define PHY_DDR3_RON_RTT_225ohm		(2)
+#define PHY_DDR3_RON_RTT_150ohm		(3)
+#define PHY_DDR3_RON_RTT_112ohm		(4)
+#define PHY_DDR3_RON_RTT_90ohm		(5)
+#define PHY_DDR3_RON_RTT_75ohm		(6)
+#define PHY_DDR3_RON_RTT_64ohm		(7)
+#define PHY_DDR3_RON_RTT_56ohm		(16)
+#define PHY_DDR3_RON_RTT_50ohm		(17)
+#define PHY_DDR3_RON_RTT_45ohm		(18)
+#define PHY_DDR3_RON_RTT_41ohm		(19)
+#define PHY_DDR3_RON_RTT_37ohm		(20)
+#define PHY_DDR3_RON_RTT_34ohm		(21)
+#define PHY_DDR3_RON_RTT_33ohm		(22)
+#define PHY_DDR3_RON_RTT_30ohm		(23)
+#define PHY_DDR3_RON_RTT_28ohm		(24)
+#define PHY_DDR3_RON_RTT_26ohm		(25)
+#define PHY_DDR3_RON_RTT_25ohm		(26)
+#define PHY_DDR3_RON_RTT_23ohm		(27)
+#define PHY_DDR3_RON_RTT_22ohm		(28)
+#define PHY_DDR3_RON_RTT_21ohm		(29)
+#define PHY_DDR3_RON_RTT_20ohm		(30)
+#define PHY_DDR3_RON_RTT_19ohm		(31)
+
+#define PHY_DDR4_LPDDR3_RON_RTT_DISABLE	(0)
+#define PHY_DDR4_LPDDR3_RON_RTT_480ohm	(1)
+#define PHY_DDR4_LPDDR3_RON_RTT_240ohm	(2)
+#define PHY_DDR4_LPDDR3_RON_RTT_160ohm	(3)
+#define PHY_DDR4_LPDDR3_RON_RTT_120ohm	(4)
+#define PHY_DDR4_LPDDR3_RON_RTT_96ohm	(5)
+#define PHY_DDR4_LPDDR3_RON_RTT_80ohm	(6)
+#define PHY_DDR4_LPDDR3_RON_RTT_68ohm	(7)
+#define PHY_DDR4_LPDDR3_RON_RTT_60ohm	(16)
+#define PHY_DDR4_LPDDR3_RON_RTT_53ohm	(17)
+#define PHY_DDR4_LPDDR3_RON_RTT_48ohm	(18)
+#define PHY_DDR4_LPDDR3_RON_RTT_43ohm	(19)
+#define PHY_DDR4_LPDDR3_RON_RTT_40ohm	(20)
+#define PHY_DDR4_LPDDR3_RON_RTT_37ohm	(21)
+#define PHY_DDR4_LPDDR3_RON_RTT_34ohm	(22)
+#define PHY_DDR4_LPDDR3_RON_RTT_32ohm	(23)
+#define PHY_DDR4_LPDDR3_RON_RTT_30ohm	(24)
+#define PHY_DDR4_LPDDR3_RON_RTT_28ohm	(25)
+#define PHY_DDR4_LPDDR3_RON_RTT_26ohm	(26)
+#define PHY_DDR4_LPDDR3_RON_RTT_25ohm	(27)
+#define PHY_DDR4_LPDDR3_RON_RTT_24ohm	(28)
+#define PHY_DDR4_LPDDR3_RON_RTT_22ohm	(29)
+#define PHY_DDR4_LPDDR3_RON_RTT_21ohm	(30)
+#define PHY_DDR4_LPDDR3_RON_RTT_20ohm	(31)
+
+#endif