rockchip: arm64: rk3399: add ddr controller driver

RK3399 support DDR3, LPDDR3, DDR4 sdram, this patch is porting from
coreboot, support 4GB lpddr3 in this version.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Added rockchip: tag:
Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 119 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
new file mode 100644
index 0000000..22a6ca9
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2016-2017 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef _ASM_ARCH_SDRAM_RK3399_H
+#define _ASM_ARCH_SDRAM_RK3399_H
+
+enum {
+	DDR3 = 0x3,
+	LPDDR2 = 0x5,
+	LPDDR3 = 0x6,
+	LPDDR4 = 0x7,
+	UNUSED = 0xFF
+};
+
+struct rk3399_ddr_pctl_regs {
+	u32 denali_ctl[332];
+};
+
+struct rk3399_ddr_publ_regs {
+	u32 denali_phy[959];
+};
+
+struct rk3399_ddr_pi_regs {
+	u32 denali_pi[200];
+};
+
+struct rk3399_msch_regs {
+	u32 coreid;
+	u32 revisionid;
+	u32 ddrconf;
+	u32 ddrsize;
+	u32 ddrtiminga0;
+	u32 ddrtimingb0;
+	u32 ddrtimingc0;
+	u32 devtodev0;
+	u32 reserved0[(0x110 - 0x20) / 4];
+	u32 ddrmode;
+	u32 reserved1[(0x1000 - 0x114) / 4];
+	u32 agingx0;
+};
+
+struct rk3399_msch_timings {
+	u32 ddrtiminga0;
+	u32 ddrtimingb0;
+	u32 ddrtimingc0;
+	u32 devtodev0;
+	u32 ddrmode;
+	u32 agingx0;
+};
+
+struct rk3399_ddr_cic_regs {
+	u32 cic_ctrl0;
+	u32 cic_ctrl1;
+	u32 cic_idle_th;
+	u32 cic_cg_wait_th;
+	u32 cic_status0;
+	u32 cic_status1;
+	u32 cic_ctrl2;
+	u32 cic_ctrl3;
+	u32 cic_ctrl4;
+};
+
+/* DENALI_CTL_00 */
+#define START		1
+
+/* DENALI_CTL_68 */
+#define PWRUP_SREFRESH_EXIT	(1 << 16)
+
+/* DENALI_CTL_274 */
+#define MEM_RST_VALID	1
+
+struct rk3399_sdram_channel {
+	unsigned int rank;
+	/* dram column number, 0 means this channel is invalid */
+	unsigned int col;
+	/* dram bank number, 3:8bank, 2:4bank */
+	unsigned int bk;
+	/* channel buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned int bw;
+	/* die buswidth, 2:32bit, 1:16bit, 0:8bit */
+	unsigned int dbw;
+	/*
+	 * row_3_4 = 1: 6Gb or 12Gb die
+	 * row_3_4 = 0: normal die, power of 2
+	 */
+	unsigned int row_3_4;
+	unsigned int cs0_row;
+	unsigned int cs1_row;
+	unsigned int ddrconfig;
+	struct rk3399_msch_timings noc_timings;
+};
+
+struct rk3399_base_params {
+	unsigned int ddr_freq;
+	unsigned int dramtype;
+	unsigned int num_channels;
+	unsigned int stride;
+	unsigned int odt;
+};
+
+struct rk3399_sdram_params {
+	struct rk3399_sdram_channel ch[2];
+	struct rk3399_base_params base;
+	struct rk3399_ddr_pctl_regs pctl_regs;
+	struct rk3399_ddr_pi_regs pi_regs;
+	struct rk3399_ddr_publ_regs phy_regs;
+};
+
+#define PI_CA_TRAINING		(1 << 0)
+#define PI_WRITE_LEVELING	(1 << 1)
+#define PI_READ_GATE_TRAINING	(1 << 2)
+#define PI_READ_LEVELING	(1 << 3)
+#define PI_WDQ_LEVELING		(1 << 4)
+#define PI_FULL_TRAINING	0xff
+
+#endif