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u-boot/arch/arm/mach-rockchip/rk3036/sdram_rk3036.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

766 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2015 Google, Inc
*/
#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, dpll output 792MHz and ddr get 396MHz
* refdiv, fbdiv, postdiv1, postdiv2
*/
const struct pll_div dpll_init_cfg = {1, 66, 2, 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_SLOW << DPLL_MODE_SHIFT);
/* use integer mode */
rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
rk_clrsetreg(&pll->con0,
PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
(dpll_init_cfg.postdiv1 << PLL_POSTDIV1_SHIFT) |
dpll_init_cfg.fbdiv);
rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
(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_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;
u32 cs1_row = 0;
struct rk3036_ddr_config config = priv->ddr_config;
if (config.rank > 1)
cs1_row = config.cs1_row - 13;
os_reg = config.ddr_type << DDR_TYPE_SHIFT |
0 << DDR_CHN_CNT_SHIFT |
(config.rank - 1) << DDR_RANK_CNT_SHIFT |
(config.col - 9) << DDR_COL_SHIFT |
(config.bank == 3 ? 0 : 1) << DDR_BANK_SHIFT |
(config.cs0_row - 13) << DDR_CS0_ROW_SHIFT |
cs1_row << DDR_CS1_ROW_SHIFT |
1 << DDR_BW_SHIFT |
(2 >> 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);
}
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