add rk3036 sdram driver so we can set up sdram in SPL
Signed-off-by: Lin Huang <h...@rock-chips.com>
---
Changes in v1: None
Changes in v2: None
Changes in v3:
- fix some code style error
Changes in v4:
- modify code advice by Simon Glass
Changes in v5:
- Advice by Simon:
- move some global variables to local variables
- delete __weak get_ddr_config() function
Changes in v6:
- Adviced by Simon:
- pass pointer to the function call
- fix some nits
arch/arm/include/asm/arch-rockchip/sdram_rk3036.h | 341 ++++++++++
arch/arm/mach-rockchip/rk3036/Makefile | 2 +
arch/arm/mach-rockchip/rk3036/sdram_rk3036.c | 764 ++++++++++++++++++++++
3 files changed, 1107 insertions(+)
create mode 100644 arch/arm/include/asm/arch-rockchip/sdram_rk3036.h
create mode 100644 arch/arm/mach-rockchip/rk3036/sdram_rk3036.c
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_rk3036.h
b/arch/arm/include/asm/arch-rockchip/sdram_rk3036.h
new file mode 100644
index 0000000..4ce2ba5
--- /dev/null
+++ b/arch/arm/include/asm/arch-rockchip/sdram_rk3036.h
@@ -0,0 +1,341 @@
+/*
+ * (C) Copyright 2015 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#ifndef _ASM_ARCH_SDRAM_RK3036_H
+#define _ASM_ARCH_SDRAM_RK3036_H
+
+#include <common.h>
+
+struct rk3036_ddr_pctl {
+ u32 scfg;
+ u32 sctl;
+ u32 stat;
+ u32 intrstat;
+ u32 reserved0[12];
+ u32 mcmd;
+ u32 powctl;
+ u32 powstat;
+ u32 cmdtstat;
+ u32 cmdtstaten;
+ u32 reserved1[3];
+ u32 mrrcfg0;
+ u32 mrrstat0;
+ u32 mrrstat1;
+ u32 reserved2[4];
+ u32 mcfg1;
+ u32 mcfg;
+ u32 ppcfg;
+ u32 mstat;
+ u32 lpddr2zqcfg;
+ u32 reserved3;
+ u32 dtupdes;
+ u32 dtuna;
+ u32 dtune;
+ u32 dtuprd0;
+ u32 dtuprd1;
+ u32 dtuprd2;
+ u32 dtuprd3;
+ u32 dtuawdt;
+ u32 reserved4[3];
+ u32 togcnt1u;
+ u32 tinit;
+ u32 trsth;
+ u32 togcnt100n;
+ u32 trefi;
+ u32 tmrd;
+ u32 trfc;
+ u32 trp;
+ u32 trtw;
+ u32 tal;
+ u32 tcl;
+ u32 tcwl;
+ u32 tras;
+ u32 trc;
+ u32 trcd;
+ u32 trrd;
+ u32 trtp;
+ u32 twr;
+ u32 twtr;
+ u32 texsr;
+ u32 txp;
+ u32 txpdll;
+ u32 tzqcs;
+ u32 tzqcsi;
+ u32 tdqs;
+ u32 tcksre;
+ u32 tcksrx;
+ u32 tcke;
+ u32 tmod;
+ u32 trstl;
+ u32 tzqcl;
+ u32 tmrr;
+ u32 tckesr;
+ u32 reserved5[47];
+ u32 dtuwactl;
+ u32 dturactl;
+ u32 dtucfg;
+ u32 dtuectl;
+ u32 dtuwd0;
+ u32 dtuwd1;
+ u32 dtuwd2;
+ u32 dtuwd3;
+ u32 dtuwdm;
+ u32 dturd0;
+ u32 dturd1;
+ u32 dturd2;
+ u32 dturd3;
+ u32 dtulfsrwd;
+ u32 dtulfsrrd;
+ u32 dtueaf;
+ u32 dfitctrldelay;
+ u32 dfiodtcfg;
+ u32 dfiodtcfg1;
+ u32 dfiodtrankmap;
+ u32 dfitphywrdata;
+ u32 dfitphywrlat;
+ u32 reserved7[2];
+ u32 dfitrddataen;
+ u32 dfitphyrdlat;
+ u32 reserved8[2];
+ u32 dfitphyupdtype0;
+ u32 dfitphyupdtype1;
+ u32 dfitphyupdtype2;
+ u32 dfitphyupdtype3;
+ u32 dfitctrlupdmin;
+ u32 dfitctrlupdmax;
+ u32 dfitctrlupddly;
+ u32 reserved9;
+ u32 dfiupdcfg;
+ u32 dfitrefmski;
+ u32 dfitctrlupdi;
+ u32 reserved10[4];
+ u32 dfitrcfg0;
+ u32 dfitrstat0;
+ u32 dfitrwrlvlen;
+ u32 dfitrrdlvlen;
+ u32 dfitrrdlvlgateen;
+ u32 dfiststat0;
+ u32 dfistcfg0;
+ u32 dfistcfg1;
+ u32 reserved11;
+ u32 dfitdramclken;
+ u32 dfitdramclkdis;
+ u32 dfistcfg2;
+ u32 dfistparclr;
+ u32 dfistparlog;
+ u32 reserved12[3];
+ u32 dfilpcfg0;
+ u32 reserved13[3];
+ u32 dfitrwrlvlresp0;
+ u32 dfitrwrlvlresp1;
+ u32 dfitrwrlvlresp2;
+ u32 dfitrrdlvlresp0;
+ u32 dfitrrdlvlresp1;
+ u32 dfitrrdlvlresp2;
+ u32 dfitrwrlvldelay0;
+ u32 dfitrwrlvldelay1;
+ u32 dfitrwrlvldelay2;
+ u32 dfitrrdlvldelay0;
+ u32 dfitrrdlvldelay1;
+ u32 dfitrrdlvldelay2;
+ u32 dfitrrdlvlgatedelay0;
+ u32 dfitrrdlvlgatedelay1;
+ u32 dfitrrdlvlgatedelay2;
+ u32 dfitrcmd;
+ u32 reserved14[46];
+ u32 ipvr;
+ u32 iptr;
+};
+check_member(rk3036_ddr_pctl, iptr, 0x03fc);
+
+struct rk3036_ddr_phy {
+ u32 ddrphy_reg1;
+ u32 ddrphy_reg3;
+ u32 ddrphy_reg2;
+ u32 reserve[11];
+ u32 ddrphy_reg4a;
+ u32 ddrphy_reg4b;
+ u32 reserve1[5];
+ u32 ddrphy_reg16;
+ u32 reserve2;
+ u32 ddrphy_reg18;
+ u32 ddrphy_reg19;
+ u32 reserve3;
+ u32 ddrphy_reg21;
+ u32 reserve4;
+ u32 ddrphy_reg22;
+ u32 reserve5[3];
+ u32 ddrphy_reg25;
+ u32 ddrphy_reg26;
+ u32 ddrphy_reg27;
+ u32 ddrphy_reg28;
+ u32 reserve6[17];
+ u32 ddrphy_reg6;
+ u32 ddrphy_reg7;
+ u32 reserve7;
+ u32 ddrphy_reg8;
+ u32 ddrphy_reg0e4;
+ u32 reserve8[11];
+ u32 ddrphy_reg9;
+ u32 ddrphy_reg10;
+ u32 reserve9;
+ u32 ddrphy_reg11;
+ u32 ddrphy_reg124;
+ u32 reserve10[38];
+ u32 ddrphy_reg29;
+ u32 reserve11[40];
+ u32 ddrphy_reg264;
+ u32 reserve12[18];
+ u32 ddrphy_reg2a;
+ u32 reserve13[4];
+ u32 ddrphy_reg30;
+ u32 ddrphy_reg31;
+ u32 ddrphy_reg32;
+ u32 ddrphy_reg33;
+ u32 ddrphy_reg34;
+ u32 ddrphy_reg35;
+ u32 ddrphy_reg36;
+ u32 ddrphy_reg37;
+ u32 ddrphy_reg38;
+ u32 ddrphy_reg39;
+ u32 ddrphy_reg40;
+ u32 ddrphy_reg41;
+ u32 ddrphy_reg42;
+ u32 ddrphy_reg43;
+ u32 ddrphy_reg44;
+ u32 ddrphy_reg45;
+ u32 ddrphy_reg46;
+ u32 ddrphy_reg47;
+ u32 ddrphy_reg48;
+ u32 ddrphy_reg49;
+ u32 ddrphy_reg50;
+ u32 ddrphy_reg51;
+ u32 ddrphy_reg52;
+ u32 ddrphy_reg53;
+ u32 reserve14;
+ u32 ddrphy_reg54;
+ u32 ddrphy_reg55;
+ u32 ddrphy_reg56;
+ u32 ddrphy_reg57;
+ u32 ddrphy_reg58;
+ u32 ddrphy_reg59;
+ u32 ddrphy_reg5a;
+ u32 ddrphy_reg5b;
+ u32 ddrphy_reg5c;
+ u32 ddrphy_reg5d;
+ u32 ddrphy_reg5e;
+ u32 reserve15[28];
+ u32 ddrphy_reg5f;
+ u32 reserve16[6];
+ u32 ddrphy_reg60;
+ u32 ddrphy_reg61;
+ u32 ddrphy_reg62;
+};
+check_member(rk3036_ddr_phy, ddrphy_reg62, 0x03e8);
+
+struct rk3036_pctl_timing {
+ u32 togcnt1u;
+ u32 tinit;
+ u32 trsth;
+ u32 togcnt100n;
+ u32 trefi;
+ u32 tmrd;
+ u32 trfc;
+ u32 trp;
+ u32 trtw;
+ u32 tal;
+ u32 tcl;
+ u32 tcwl;
+ u32 tras;
+ u32 trc;
+ u32 trcd;
+ u32 trrd;
+ u32 trtp;
+ u32 twr;
+ u32 twtr;
+ u32 texsr;
+ u32 txp;
+ u32 txpdll;
+ u32 tzqcs;
+ u32 tzqcsi;
+ u32 tdqs;
+ u32 tcksre;
+ u32 tcksrx;
+ u32 tcke;
+ u32 tmod;
+ u32 trstl;
+ u32 tzqcl;
+ u32 tmrr;
+ u32 tckesr;
+ u32 tdpd;
+};
+
+struct rk3036_phy_timing {
+ u32 mr[4];
+ u32 bl;
+ u32 cl_al;
+};
+
+typedef union {
+ u32 noc_timing;
+ struct {
+ u32 acttoact:6;
+ u32 rdtomiss:6;
+ u32 wrtomiss:6;
+ u32 burstlen:3;
+ u32 rdtowr:5;
+ u32 wrtord:5;
+ u32 bwratio:1;
+ };
+} rk3036_noc_timing;
+
+struct rk3036_ddr_timing {
+ u32 freq;
+ struct rk3036_pctl_timing pctl_timing;
+ struct rk3036_phy_timing phy_timing;
+ rk3036_noc_timing noc_timing;
+};
+
+struct rk3036_service_sys {
+ u32 id_coreid;
+ u32 id_revisionid;
+ u32 ddrconf;
+ u32 ddrtiming;
+ u32 ddrmode;
+ u32 readlatency;
+};
+
+struct rk3036_ddr_config {
+ /*
+ * 000: lpddr
+ * 001: ddr
+ * 010: ddr2
+ * 011: ddr3
+ * 100: lpddr2-s2
+ * 101: lpddr2-s4
+ * 110: lpddr3
+ */
+ u32 ddr_type;
+ u32 rank;
+ u32 cs0_row;
+ u32 cs1_row;
+
+ /* 2: 4bank, 3: 8bank */
+ u32 bank;
+ u32 col;
+
+ /* bw(0: 8bit, 1: 16bit, 2: 32bit) */
+ u32 bw;
+};
+
+/* rk3036 sdram initial */
+void sdram_init(void);
+
+/* get ddr die config, implement in specific board */
+void get_ddr_config(struct rk3036_ddr_config *config);
+
+/* get ddr size on board */
+size_t sdram_size(void);
+#endif
diff --git a/arch/arm/mach-rockchip/rk3036/Makefile
b/arch/arm/mach-rockchip/rk3036/Makefile
index 5d14b95..6095777 100644
--- a/arch/arm/mach-rockchip/rk3036/Makefile
+++ b/arch/arm/mach-rockchip/rk3036/Makefile
@@ -8,3 +8,5 @@ ifndef CONFIG_SPL_BUILD
obj-y += reset_rk3036.o
obj-y += syscon_rk3036.o
endif
+
+obj-y += sdram_rk3036.o
diff --git a/arch/arm/mach-rockchip/rk3036/sdram_rk3036.c
b/arch/arm/mach-rockchip/rk3036/sdram_rk3036.c
new file mode 100644
index 0000000..7a05e31
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3036/sdram_rk3036.c
@@ -0,0 +1,764 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/types.h>
+#include <asm/arch/cru_rk3036.h>
+#include <asm/arch/grf_rk3036.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sdram_rk3036.h>
+#include <asm/arch/timer.h>
+#include <asm/arch/uart.h>
+
+/*
+ * we can not fit the code to access the device tree in SPL
+ * (due to 4K SRAM size limits), so these are hard-coded
+ */
+#define CRU_BASE 0x20000000
+#define GRF_BASE 0x20008000
+#define DDR_PHY_BASE 0x2000a000
+#define DDR_PCTL_BASE 0x20004000
+#define CPU_AXI_BUS_BASE 0x10128000
+
+struct rk3036_sdram_priv {
+ struct rk3036_cru *cru;
+ struct rk3036_grf *grf;
+ struct rk3036_ddr_phy *phy;
+ struct rk3036_ddr_pctl *pctl;
+ struct rk3036_service_sys *axi_bus;
+
+ /* ddr die config */
+ struct rk3036_ddr_config ddr_config;
+};
+
+/* use integer mode, 396MHz dpll setting
+ * refdiv, fbdiv, postdiv1, postdiv2
+ */
+const struct pll_div dpll_init_cfg = {1, 66, 4, 1};
+
+/* 396Mhz ddr timing */
+const struct rk3036_ddr_timing ddr_timing = {0x18c,
+ {0x18c, 0xc8, 0x1f4, 0x27, 0x4e,
+ 0x4, 0x8b, 0x06, 0x03, 0x0, 0x06, 0x05, 0x0f, 0x15, 0x06, 0x04, 0x04,
+ 0x06, 0x04, 0x200, 0x03, 0x0a, 0x40, 0x2710, 0x01, 0x05, 0x05, 0x03,
+ 0x0c, 0x28, 0x100, 0x0, 0x04, 0x0},
+ {{0x420, 0x42, 0x0, 0x0}, 0x01, 0x60},
+ {0x24717315} };
+
+/*
+ * [7:6] bank(n:n bit bank)
+ * [5:4] row(13+n)
+ * [3] cs(0:1 cs, 1:2 cs)
+ * [2:1] bank(n:n bit bank)
+ * [0] col(10+n)
+ */
+const char ddr_cfg_2_rbc[] = {
+ ((3 << 6) | (3 << 4) | (0 << 3) | (0 << 1) | 1),
+ ((0 << 6) | (1 << 4) | (0 << 3) | (3 << 1) | 0),
+ ((0 << 6) | (2 << 4) | (0 << 3) | (3 << 1) | 0),
+ ((0 << 6) | (3 << 4) | (0 << 3) | (3 << 1) | 0),
+ ((0 << 6) | (1 << 4) | (0 << 3) | (3 << 1) | 1),
+ ((0 << 6) | (2 << 4) | (0 << 3) | (3 << 1) | 1),
+ ((0 << 6) | (3 << 4) | (0 << 3) | (3 << 1) | 1),
+ ((0 << 6) | (0 << 4) | (0 << 3) | (3 << 1) | 0),
+ ((0 << 6) | (0 << 4) | (0 << 3) | (3 << 1) | 1),
+ ((0 << 6) | (3 << 4) | (1 << 3) | (3 << 1) | 0),
+ ((0 << 6) | (3 << 4) | (1 << 3) | (3 << 1) | 1),
+ ((1 << 6) | (2 << 4) | (0 << 3) | (2 << 1) | 0),
+ ((3 << 6) | (2 << 4) | (0 << 3) | (0 << 1) | 1),
+ ((3 << 6) | (3 << 4) | (0 << 3) | (0 << 1) | 0),
+};
+
+/* DDRPHY REG */
+enum {
+ /* DDRPHY_REG1 */
+ SOFT_RESET_MASK = 3,
+ SOFT_RESET_SHIFT = 2,
+
+ /* DDRPHY_REG2 */
+ MEMORY_SELECT_DDR3 = 0 << 6,
+ DQS_SQU_CAL_NORMAL_MODE = 0 << 1,
+ DQS_SQU_CAL_START = 1 << 0,
+ DQS_SQU_NO_CAL = 0 << 0,
+
+ /* DDRPHY_REG2A */
+ CMD_DLL_BYPASS = 1 << 4,
+ CMD_DLL_BYPASS_DISABLE = 0 << 4,
+ HIGH_8BIT_DLL_BYPASS = 1 << 3,
+ HIGH_8BIT_DLL_BYPASS_DISABLE = 0 << 3,
+ LOW_8BIT_DLL_BYPASS = 1 << 2,
+ LOW_8BIT_DLL_BYPASS_DISABLE = 0 << 2,
+
+ /* DDRPHY_REG19 */
+ CMD_FEEDBACK_ENABLE = 1 << 5,
+ CMD_SLAVE_DLL_INVERSE_MODE = 1 << 4,
+ CMD_SLAVE_DLL_NO_INVERSE_MODE = 0 << 4,
+ CMD_SLAVE_DLL_ENALBE = 1 << 3,
+ CMD_TX_SLAVE_DLL_DELAY_MASK = 7,
+ CMD_TX_SLAVE_DLL_DELAY_SHIFT = 0,
+
+ /* DDRPHY_REG6 */
+ LEFT_CHN_TX_DQ_PHASE_BYPASS_90 = 1 << 4,
+ LEFT_CHN_TX_DQ_PHASE_BYPASS_0 = 0 << 4,
+ LEFT_CHN_TX_DQ_DLL_ENABLE = 1 << 3,
+ LEFT_CHN_TX_DQ_DLL_DELAY_MASK = 7,
+ LEFT_CHN_TX_DQ_DLL_DELAY_SHIFT = 0,
+
+ /* DDRPHY_REG8 */
+ LEFT_CHN_RX_DQS_DELAY_TAP_MASK = 3,
+ LEFT_CHN_RX_DQS_DELAY_TAP_SHIFT = 0,
+
+ /* DDRPHY_REG9 */
+ RIGHT_CHN_TX_DQ_PHASE_BYPASS_90 = 1 << 4,
+ RIGHT_CHN_TX_DQ_PHASE_BYPASS_0 = 0 << 4,
+ RIGHT_CHN_TX_DQ_DLL_ENABLE = 1 << 3,
+ RIGHT_CHN_TX_DQ_DLL_DELAY_MASK = 7,
+ RIGHT_CHN_TX_DQ_DLL_DELAY_SHIFT = 0,
+
+ /* DDRPHY_REG11 */
+ RIGHT_CHN_RX_DQS_DELAY_TAP_MASK = 3,
+ RIGHT_CHN_RX_DQS_DELAY_TAP_SHIFT = 0,
+
+ /* DDRPHY_REG62 */
+ CAL_DONE_MASK = 3,
+ HIGH_8BIT_CAL_DONE = 1 << 1,
+ LOW_8BIT_CAL_DONE = 1 << 0,
+};
+
+/* PTCL */
+enum {
+ /* PCTL_DFISTCFG0 */
+ DFI_INIT_START = 1 << 0,
+ DFI_DATA_BYTE_DISABLE_EN = 1 << 2,
+
+ /* PCTL_DFISTCFG1 */
+ DFI_DRAM_CLK_SR_EN = 1 << 0,
+ DFI_DRAM_CLK_DPD_EN = 1 << 1,
+
+ /* PCTL_DFISTCFG2 */
+ DFI_PARITY_INTR_EN = 1 << 0,
+ DFI_PARITY_EN = 1 << 1,
+
+ /* PCTL_DFILPCFG0 */
+ TLP_RESP_TIME_SHIFT = 16,
+ LP_SR_EN = 1 << 8,
+ LP_PD_EN = 1 << 0,
+
+ /* PCTL_DFIODTCFG */
+ RANK0_ODT_WRITE_SEL = 1 << 3,
+ RANK1_ODT_WRITE_SEL = 1 << 11,
+
+ /* PCTL_DFIODTCFG1 */
+ ODT_LEN_BL8_W_SHIFT = 16,
+
+ /* PCTL_MCFG */
+ TFAW_CFG_MASK = 3,
+ TFAW_CFG_SHIFT = 18,
+ PD_EXIT_SLOW_MODE = 0 << 17,
+ PD_ACTIVE_POWER_DOWN = 1 << 16,
+ PD_IDLE_MASK = 0xff,
+ PD_IDLE_SHIFT = 8,
+ MEM_BL4 = 0 << 0,
+ MEM_BL8 = 1 << 0,
+
+ /* PCTL_MCFG1 */
+ HW_EXIT_IDLE_EN_MASK = 1,
+ HW_EXIT_IDLE_EN_SHIFT = 31,
+ SR_IDLE_MASK = 0x1ff,
+ SR_IDLE_SHIFT = 0,
+
+ /* PCTL_SCFG */
+ HW_LOW_POWER_EN = 1 << 0,
+
+ /* PCTL_POWCTL */
+ POWER_UP_START = 1 << 0,
+
+ /* PCTL_POWSTAT */
+ POWER_UP_DONE = 1 << 0,
+
+ /* PCTL_MCMD */
+ START_CMD = 1 << 31,
+ BANK_ADDR_MASK = 7,
+ BANK_ADDR_SHIFT = 17,
+ CMD_ADDR_MASK = 0x1fff,
+ CMD_ADDR_SHIFT = 4,
+ DESELECT_CMD = 0,
+ PREA_CMD,
+ REF_CMD,
+ MRS_CMD,
+ ZQCS_CMD,
+ ZQCL_CMD,
+ RSTL_CMD,
+ MRR_CMD = 8,
+
+ /* PCTL_STAT */
+ INIT_MEM = 0,
+ CONFIG,
+ CONFIG_REQ,
+ ACCESS,
+ ACCESS_REQ,
+ LOW_POWER,
+ LOW_POWER_ENTRY_REQ,
+ LOW_POWER_EXIT_REQ,
+ PCTL_STAT_MASK = 7,
+
+ /* PCTL_SCTL */
+ INIT_STATE = 0,
+ CFG_STATE = 1,
+ GO_STATE = 2,
+ SLEEP_STATE = 3,
+ WAKEUP_STATE = 4,
+};
+
+/* GRF_SOC_CON2 */
+#define MSCH4_MAINDDR3 (1 << 7)
+#define PHY_DRV_ODT_SET(n) ((n << 4) | n)
+#define DDR3_DLL_RESET (1 << 8)
+
+/* CK pull up/down driver strength control */
+enum {
+ PHY_RON_DISABLE = 0,
+ PHY_RON_309OHM = 1,
+ PHY_RON_155OHM,
+ PHY_RON_103OHM = 3,
+ PHY_RON_63OHM = 5,
+ PHY_RON_45OHM = 7,
+ PHY_RON_77OHM,
+ PHY_RON_62OHM,
+ PHY_RON_52OHM,
+ PHY_RON_44OHM,
+ PHY_RON_39OHM,
+ PHY_RON_34OHM,
+ PHY_RON_31OHM,
+ PHY_RON_28OHM,
+};
+
+/* DQ pull up/down control */
+enum {
+ PHY_RTT_DISABLE = 0,
+ PHY_RTT_861OHM = 1,
+ PHY_RTT_431OHM,
+ PHY_RTT_287OHM,
+ PHY_RTT_216OHM,
+ PHY_RTT_172OHM,
+ PHY_RTT_145OHM,
+ PHY_RTT_124OHM,
+ PHY_RTT_215OHM,
+ PHY_RTT_144OHM = 0xa,
+ PHY_RTT_123OHM,
+ PHY_RTT_108OHM,
+ PHY_RTT_96OHM,
+ PHY_RTT_86OHM,
+ PHY_RTT_78OHM,
+};
+
+/* DQS squelch DLL delay */
+enum {
+ DQS_DLL_NO_DELAY = 0,
+ DQS_DLL_22P5_DELAY,
+ DQS_DLL_45_DELAY,
+ DQS_DLL_67P5_DELAY,
+ DQS_DLL_90_DELAY,
+ DQS_DLL_112P5_DELAY,
+ DQS_DLL_135_DELAY,
+ DQS_DLL_157P5_DELAY,
+};
+
+/* GRF_OS_REG1 */
+enum {
+ /*
+ * 000: lpddr
+ * 001: ddr
+ * 010: ddr2
+ * 011: ddr3
+ * 100: lpddr2-s2
+ * 101: lpddr2-s4
+ * 110: lpddr3
+ */
+ DDR_TYPE_MASK = 7,
+ DDR_TYPE_SHIFT = 13,
+
+ /* 0: 1 chn, 1: 2 chn */
+ DDR_CHN_CNT_SHIFT = 12,
+
+ /* 0: 1 rank, 1: 2 rank */
+ DDR_RANK_CNT_MASK = 1,
+ DDR_RANK_CNT_SHIFT = 11,
+
+ /*
+ * 00: 9col
+ * 01: 10col
+ * 10: 11col
+ * 11: 12col
+ */
+ DDR_COL_MASK = 3,
+ DDR_COL_SHIFT = 9,
+
+ /* 0: 8 bank, 1: 4 bank*/
+ DDR_BANK_MASK = 1,
+ DDR_BANK_SHIFT = 8,
+
+ /*
+ * 00: 13 row
+ * 01: 14 row
+ * 10: 15 row
+ * 11: 16 row
+ */
+ DDR_CS0_ROW_MASK = 3,
+ DDR_CS0_ROW_SHIFT = 6,
+ DDR_CS1_ROW_MASK = 3,
+ DDR_CS1_ROW_SHIFT = 4,
+
+ /*
+ * 00: 32 bit
+ * 01: 16 bit
+ * 10: 8 bit
+ * rk3036 only support 16bit
+ */
+ DDR_BW_MASK = 3,
+ DDR_BW_SHIFT = 2,
+ DDR_DIE_BW_MASK = 3,
+ DDR_DIE_BW_SHIFT = 0,
+};
+
+static void rkdclk_init(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_pll *pll = &priv->cru->pll[1];
+
+ /* pll enter slow-mode */
+ rk_clrsetreg(&priv->cru->cru_mode_con,
+ DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+ DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
+
+ /* use integer mode */
+ rk_clrreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
+
+ rk_clrsetreg(&pll->con0,
+ PLL_POSTDIV1_MASK << PLL_POSTDIV1_SHIFT | PLL_FBDIV_MASK,
+ (dpll_init_cfg.postdiv1 << PLL_POSTDIV1_SHIFT) |
+ dpll_init_cfg.fbdiv);
+ rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK << PLL_POSTDIV2_SHIFT |
+ PLL_REFDIV_MASK << PLL_REFDIV_SHIFT,
+ (dpll_init_cfg.postdiv2 << PLL_POSTDIV2_SHIFT |
+ dpll_init_cfg.refdiv << PLL_REFDIV_SHIFT));
+
+ /* waiting for pll lock */
+ while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
+ rockchip_udelay(1);
+
+ /* PLL enter normal-mode */
+ rk_clrsetreg(&priv->cru->cru_mode_con,
+ DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+ DPLL_MODE_NORM << DPLL_MODE_SHIFT);
+}
+
+static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
+{
+ int i;
+
+ for (i = 0; i < n / sizeof(u32); i++) {
+ writel(*src, dest);
+ src++;
+ dest++;
+ }
+}
+
+void phy_pctrl_reset(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_ddr_phy *ddr_phy = priv->phy;
+
+ rk_clrsetreg(&priv->cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT |
+ 1 << DDRCTRL_SRST_SHIFT | 1 << DDRPHY_PSRST_SHIFT |
+ 1 << DDRPHY_SRST_SHIFT,
+ 1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT |
+ 1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT);
+
+ rockchip_udelay(10);
+
+ rk_clrreg(&priv->cru->cru_softrst_con[5], 1 << DDRPHY_PSRST_SHIFT |
+ 1 << DDRPHY_SRST_SHIFT);
+ rockchip_udelay(10);
+
+ rk_clrreg(&priv->cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT |
+ 1 << DDRCTRL_SRST_SHIFT);
+ rockchip_udelay(10);
+
+ clrsetbits_le32(&ddr_phy->ddrphy_reg1,
+ SOFT_RESET_MASK << SOFT_RESET_SHIFT,
+ 0 << SOFT_RESET_SHIFT);
+ rockchip_udelay(10);
+ clrsetbits_le32(&ddr_phy->ddrphy_reg1,
+ SOFT_RESET_MASK << SOFT_RESET_SHIFT,
+ 3 << SOFT_RESET_SHIFT);
+
+ rockchip_udelay(1);
+}
+
+void phy_dll_bypass_set(struct rk3036_sdram_priv *priv, unsigned int freq)
+{
+ struct rk3036_ddr_phy *ddr_phy = priv->phy;
+
+ if (freq < ddr_timing.freq) {
+ writel(CMD_DLL_BYPASS | HIGH_8BIT_DLL_BYPASS |
+ LOW_8BIT_DLL_BYPASS, &ddr_phy->ddrphy_reg2a);
+
+ writel(LEFT_CHN_TX_DQ_PHASE_BYPASS_90 |
+ LEFT_CHN_TX_DQ_DLL_ENABLE |
+ (0 & LEFT_CHN_TX_DQ_DLL_DELAY_MASK) <<
+ LEFT_CHN_TX_DQ_DLL_DELAY_SHIFT, &ddr_phy->ddrphy_reg6);
+
+ writel(RIGHT_CHN_TX_DQ_PHASE_BYPASS_90 |
+ RIGHT_CHN_TX_DQ_DLL_ENABLE |
+ (0 & RIGHT_CHN_TX_DQ_DLL_DELAY_MASK) <<
+ RIGHT_CHN_TX_DQ_DLL_DELAY_SHIFT,
+ &ddr_phy->ddrphy_reg9);
+ } else {
+ writel(CMD_DLL_BYPASS_DISABLE | HIGH_8BIT_DLL_BYPASS_DISABLE |
+ LOW_8BIT_DLL_BYPASS_DISABLE, &ddr_phy->ddrphy_reg2a);
+
+ writel(LEFT_CHN_TX_DQ_PHASE_BYPASS_0 |
+ LEFT_CHN_TX_DQ_DLL_ENABLE |
+ (4 & LEFT_CHN_TX_DQ_DLL_DELAY_MASK) <<
+ LEFT_CHN_TX_DQ_DLL_DELAY_SHIFT,
+ &ddr_phy->ddrphy_reg6);
+
+ writel(RIGHT_CHN_TX_DQ_PHASE_BYPASS_0 |
+ RIGHT_CHN_TX_DQ_DLL_ENABLE |
+ (4 & RIGHT_CHN_TX_DQ_DLL_DELAY_MASK) <<
+ RIGHT_CHN_TX_DQ_DLL_DELAY_SHIFT,
+ &ddr_phy->ddrphy_reg9);
+ }
+
+ writel(CMD_SLAVE_DLL_NO_INVERSE_MODE | CMD_SLAVE_DLL_ENALBE |
+ (0 & CMD_TX_SLAVE_DLL_DELAY_MASK) <<
+ CMD_TX_SLAVE_DLL_DELAY_SHIFT, &ddr_phy->ddrphy_reg19);
+
+ /* 45 degree delay */
+ writel((DQS_DLL_45_DELAY & LEFT_CHN_RX_DQS_DELAY_TAP_MASK) <<
+ LEFT_CHN_RX_DQS_DELAY_TAP_SHIFT, &ddr_phy->ddrphy_reg8);
+ writel((DQS_DLL_45_DELAY & RIGHT_CHN_RX_DQS_DELAY_TAP_MASK) <<
+ RIGHT_CHN_RX_DQS_DELAY_TAP_SHIFT, &ddr_phy->ddrphy_reg11);
+}
+
+static void send_command(struct rk3036_ddr_pctl *pctl,
+ u32 rank, u32 cmd, u32 arg)
+{
+ writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd);
+ rockchip_udelay(1);
+ while (readl(&pctl->mcmd) & START_CMD)
+ ;
+}
+
+static void memory_init(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_ddr_pctl *pctl = priv->pctl;
+
+ send_command(pctl, 3, DESELECT_CMD, 0);
+ rockchip_udelay(1);
+ send_command(pctl, 3, PREA_CMD, 0);
+ send_command(pctl, 3, MRS_CMD,
+ (0x02 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
+ (ddr_timing.phy_timing.mr[2] & CMD_ADDR_MASK) <<
+ CMD_ADDR_SHIFT);
+
+ send_command(pctl, 3, MRS_CMD,
+ (0x03 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
+ (ddr_timing.phy_timing.mr[3] & CMD_ADDR_MASK) <<
+ CMD_ADDR_SHIFT);
+
+ send_command(pctl, 3, MRS_CMD,
+ (0x01 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
+ (ddr_timing.phy_timing.mr[1] & CMD_ADDR_MASK) <<
+ CMD_ADDR_SHIFT);
+
+ send_command(pctl, 3, MRS_CMD,
+ (0x00 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
+ (ddr_timing.phy_timing.mr[0] & CMD_ADDR_MASK) <<
+ CMD_ADDR_SHIFT | DDR3_DLL_RESET);
+
+ send_command(pctl, 3, ZQCL_CMD, 0);
+}
+
+static void data_training(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_ddr_phy *ddr_phy = priv->phy;
+ struct rk3036_ddr_pctl *pctl = priv->pctl;
+ u32 value;
+
+ /* disable auto refresh */
+ value = readl(&pctl->trefi),
+ writel(0, &pctl->trefi);
+
+ clrsetbits_le32(&ddr_phy->ddrphy_reg2, 0x03,
+ DQS_SQU_CAL_NORMAL_MODE | DQS_SQU_CAL_START);
+
+ rockchip_udelay(1);
+ while ((readl(&ddr_phy->ddrphy_reg62) & CAL_DONE_MASK) !=
+ (HIGH_8BIT_CAL_DONE | LOW_8BIT_CAL_DONE)) {
+ ;
+ }
+
+ clrsetbits_le32(&ddr_phy->ddrphy_reg2, 0x03,
+ DQS_SQU_CAL_NORMAL_MODE | DQS_SQU_NO_CAL);
+
+ /*
+ * since data training will take about 20us, so send some auto
+ * refresh(about 7.8us) to complement the lost time
+ */
+ send_command(pctl, 3, REF_CMD, 0);
+ send_command(pctl, 3, REF_CMD, 0);
+ send_command(pctl, 3, REF_CMD, 0);
+
+ writel(value, &pctl->trefi);
+}
+
+static void move_to_config_state(struct rk3036_sdram_priv *priv)
+{
+ unsigned int state;
+ struct rk3036_ddr_pctl *pctl = priv->pctl;
+
+ while (1) {
+ state = readl(&pctl->stat) & PCTL_STAT_MASK;
+ switch (state) {
+ case LOW_POWER:
+ writel(WAKEUP_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MASK)
+ != ACCESS)
+ ;
+ /*
+ * If at low power state, need wakeup first, and then
+ * enter the config, so fallthrough
+ */
+ case ACCESS:
+ /* fallthrough */
+ case INIT_MEM:
+ writel(CFG_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG)
+ ;
+ break;
+ case CONFIG:
+ return;
+ default:
+ break;
+ }
+ }
+}
+
+static void move_to_access_state(struct rk3036_sdram_priv *priv)
+{
+ unsigned int state;
+ struct rk3036_ddr_pctl *pctl = priv->pctl;
+
+ while (1) {
+ state = readl(&pctl->stat) & PCTL_STAT_MASK;
+ switch (state) {
+ case LOW_POWER:
+ writel(WAKEUP_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS)
+ ;
+ break;
+ case INIT_MEM:
+ writel(CFG_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG)
+ ;
+ /* fallthrough */
+ case CONFIG:
+ writel(GO_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS)
+ ;
+ break;
+ case ACCESS:
+ return;
+ default:
+ break;
+ }
+ }
+}
+
+static void pctl_cfg(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_ddr_pctl *pctl = priv->pctl;
+ u32 burst_len;
+ u32 reg;
+
+ writel(DFI_INIT_START | DFI_DATA_BYTE_DISABLE_EN, &pctl->dfistcfg0);
+ writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN, &pctl->dfistcfg1);
+ writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2);
+ writel(7 << TLP_RESP_TIME_SHIFT | LP_SR_EN | LP_PD_EN,
+ &pctl->dfilpcfg0);
+
+ writel(1, &pctl->dfitphyupdtype0);
+ writel(0x0d, &pctl->dfitphyrdlat);
+
+ /* cs0 and cs1 write odt enable */
+ writel((RANK0_ODT_WRITE_SEL | RANK1_ODT_WRITE_SEL),
+ &pctl->dfiodtcfg);
+
+ /* odt write length */
+ writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1);
+
+ /* phyupd and ctrlupd disabled */
+ writel(0, &pctl->dfiupdcfg);
+
+ if ((ddr_timing.noc_timing.burstlen << 1) == 4)
+ burst_len = MEM_BL4;
+ else
+ burst_len = MEM_BL8;
+
+ copy_to_reg(&pctl->togcnt1u, &ddr_timing.pctl_timing.togcnt1u,
+ sizeof(struct rk3036_pctl_timing));
+ reg = readl(&pctl->tcl);
+ writel(reg - 3, &pctl->dfitrddataen);
+ reg = readl(&pctl->tcwl);
+ writel(reg - 1, &pctl->dfitphywrlat);
+
+ writel(burst_len | (1 & TFAW_CFG_MASK) << TFAW_CFG_SHIFT |
+ PD_EXIT_SLOW_MODE | PD_ACTIVE_POWER_DOWN |
+ (0 & PD_IDLE_MASK) << PD_IDLE_SHIFT,
+ &pctl->mcfg);
+
+ writel(RK_SETBITS(MSCH4_MAINDDR3), &priv->grf->soc_con2);
+ setbits_le32(&pctl->scfg, HW_LOW_POWER_EN);
+}
+
+static void phy_cfg(struct rk3036_sdram_priv *priv)
+{
+ struct rk3036_ddr_phy *ddr_phy = priv->phy;
+ struct rk3036_service_sys *axi_bus = priv->axi_bus;
+
+ writel(ddr_timing.noc_timing.noc_timing, &axi_bus->ddrtiming);
+ writel(0x3f, &axi_bus->readlatency);
+
+ writel(MEMORY_SELECT_DDR3 | DQS_SQU_CAL_NORMAL_MODE,
+ &ddr_phy->ddrphy_reg2);
+
+ clrsetbits_le32(&ddr_phy->ddrphy_reg3, 1, ddr_timing.phy_timing.bl);
+ writel(ddr_timing.phy_timing.cl_al, &ddr_phy->ddrphy_reg4a);
+ writel(PHY_DRV_ODT_SET(PHY_RON_44OHM), &ddr_phy->ddrphy_reg16);
+ writel(PHY_DRV_ODT_SET(PHY_RON_44OHM), &ddr_phy->ddrphy_reg22);
+ writel(PHY_DRV_ODT_SET(PHY_RON_44OHM), &ddr_phy->ddrphy_reg25);
+ writel(PHY_DRV_ODT_SET(PHY_RON_44OHM), &ddr_phy->ddrphy_reg26);
+ writel(PHY_DRV_ODT_SET(PHY_RTT_216OHM), &ddr_phy->ddrphy_reg27);
+ writel(PHY_DRV_ODT_SET(PHY_RTT_216OHM), &ddr_phy->ddrphy_reg28);
+}
+
+void dram_cfg_rbc(struct rk3036_sdram_priv *priv)
+{
+ char noc_config;
+ int i = 0;
+ struct rk3036_ddr_config config = priv->ddr_config;
+ struct rk3036_service_sys *axi_bus = priv->axi_bus;
+
+ move_to_config_state(priv);
+
+ /* 2bit in BIT1, 2 */
+ if (config.rank == 2) {
+ noc_config = (config.cs0_row - 13) << 4 | config.bank << 1 |
+ 1 << 3 | (config.col - 10);
+ if (noc_config == ddr_cfg_2_rbc[9]) {
+ i = 9;
+ goto finish;
+ } else if (noc_config == ddr_cfg_2_rbc[10]) {
+ i = 10;
+ goto finish;
+ }
+ }
+
+ noc_config = (config.cs0_row - 13) << 4 | config.bank << 1 |
+ (config.col - 10);
+
+ for (i = 0; i < sizeof(ddr_cfg_2_rbc); i++) {
+ if (noc_config == ddr_cfg_2_rbc[i])
+ goto finish;
+ }
+
+ /* bank: 1 bit in BIT6,7, 1bit in BIT1, 2 */
+ noc_config = 1 << 6 | (config.cs0_row - 13) << 4 |
+ 2 << 1 | (config.col - 10);
+ if (noc_config == ddr_cfg_2_rbc[11]) {
+ i = 11;
+ goto finish;
+ }
+
+ /* bank: 2bit in BIT6,7 */
+ noc_config = (config.bank << 6) | (config.cs0_row - 13) << 4 |
+ (config.col - 10);
+
+ if (noc_config == ddr_cfg_2_rbc[0])
+ i = 0;
+ else if (noc_config == ddr_cfg_2_rbc[12])
+ i = 12;
+ else if (noc_config == ddr_cfg_2_rbc[13])
+ i = 13;
+finish:
+ writel(i, &axi_bus->ddrconf);
+ move_to_access_state(priv);
+}
+
+static void sdram_all_config(struct rk3036_sdram_priv *priv)
+{
+ u32 os_reg = 0;
+ struct rk3036_ddr_config config = priv->ddr_config;
+
+ os_reg = config.ddr_type << DDR_TYPE_SHIFT |
+ 0 << DDR_CHN_CNT_SHIFT |
+ (config.rank - 1) << DDR_RANK_CNT_SHIFT |
+ (config.col - 1) << DDR_COL_SHIFT |
+ (config.bank == 3 ? 0 : 1) << DDR_BANK_SHIFT |
+ (config.cs0_row - 13) << DDR_CS0_ROW_SHIFT |
+ (config.cs1_row - 13) << DDR_CS1_ROW_SHIFT |
+ 1 << DDR_BW_SHIFT | config.bw << DDR_DIE_BW_SHIFT;
+ writel(os_reg, &priv->grf->os_reg[1]);
+}
+
+size_t sdram_size(void)
+{
+ u32 size, os_reg, cs0_row, cs1_row, col, bank, rank;
+ struct rk3036_grf *grf = (void *)GRF_BASE;
+
+ os_reg = readl(&grf->os_reg[1]);
+
+ cs0_row = 13 + ((os_reg >> DDR_CS0_ROW_SHIFT) & DDR_CS0_ROW_MASK);
+ cs1_row = 13 + ((os_reg >> DDR_CS1_ROW_SHIFT) & DDR_CS1_ROW_MASK);
+ col = 9 + ((os_reg >> DDR_COL_SHIFT) & DDR_COL_MASK);
+ bank = 3 - ((os_reg >> DDR_BANK_SHIFT) & DDR_BANK_MASK);
+ rank = 1 + ((os_reg >> DDR_RANK_CNT_SHIFT) & DDR_RANK_CNT_MASK);
+
+ /* row + col + bank + bw(rk3036 only support 16bit, so fix in 1) */
+ size = 1 << (cs0_row + col + bank + 1);
+
+ if (rank > 1)
+ size += size >> (cs0_row - cs1_row);
+
+ return size;
+}
+
+void sdram_init(void)
+{
+ struct rk3036_sdram_priv sdram_priv;
+
+ sdram_priv.cru = (void *)CRU_BASE;
+ sdram_priv.grf = (void *)GRF_BASE;
+ sdram_priv.phy = (void *)DDR_PHY_BASE;
+ sdram_priv.pctl = (void *)DDR_PCTL_BASE;
+ sdram_priv.axi_bus = (void *)CPU_AXI_BUS_BASE;
+
+ get_ddr_config(&sdram_priv.ddr_config);
+ sdram_all_config(&sdram_priv);
+ rkdclk_init(&sdram_priv);
+ phy_pctrl_reset(&sdram_priv);
+ phy_dll_bypass_set(&sdram_priv, ddr_timing.freq);
+ pctl_cfg(&sdram_priv);
+ phy_cfg(&sdram_priv);
+ writel(POWER_UP_START, &sdram_priv.pctl->powctl);
+ while (!(readl(&sdram_priv.pctl->powstat) & POWER_UP_DONE))
+ ;
+ memory_init(&sdram_priv);
+ move_to_config_state(&sdram_priv);
+ data_training(&sdram_priv);
+ move_to_access_state(&sdram_priv);
+ dram_cfg_rbc(&sdram_priv);
+}
--
1.9.1
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