// SPDX-License-Identifier: GPL-2.0
/*
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
*/
#include <common.h>
#include <clk.h>
#include <dm.h>
#include <dt-structs.h>
#include <errno.h>
#include <ram.h>
#include <regmap.h>
#include <syscon.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk322x.h>
#include <asm/arch/grf_rk322x.h>
#include <asm/arch/hardware.h>
#include <asm/arch/sdram_rk322x.h>
#include <asm/arch/timer.h>
#include <asm/arch/uart.h>
#include <asm/arch/sdram_common.h>
#include <asm/types.h>
#include <linux/err.h>
DECLARE_GLOBAL_DATA_PTR;
struct chan_info {
struct rk322x_ddr_pctl *pctl;
struct rk322x_ddr_phy *phy;
struct rk322x_service_sys *msch;
};
struct dram_info {
struct chan_info chan[1];
struct ram_info info;
struct clk ddr_clk;
struct rk322x_cru *cru;
struct rk322x_grf *grf;
};
struct rk322x_sdram_params {
#if CONFIG_IS_ENABLED(OF_PLATDATA)
struct dtd_rockchip_rk3228_dmc of_plat;
#endif
struct rk322x_sdram_channel ch[1];
struct rk322x_pctl_timing pctl_timing;
struct rk322x_phy_timing phy_timing;
struct rk322x_base_params base;
int num_channels;
struct regmap *map;
};
#ifdef CONFIG_TPL_BUILD
/*
* [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[] = {
((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 1),
((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 1),
((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 1),
((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 1),
((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 2),
((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 2),
((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 2),
((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 0),
((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 0),
((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 0),
((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 0),
((0 << 6) | (2 << 4) | (0 << 3) | (0 << 2) | 1),
((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 2),
((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 1),
((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 1),
((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 0),
};
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 rk322x_cru *cru,
struct rk322x_ddr_phy *ddr_phy)
{
rk_clrsetreg(&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(&cru->cru_softrst_con[5], 1 << DDRPHY_PSRST_SHIFT |
1 << DDRPHY_SRST_SHIFT);
rockchip_udelay(10);
rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT |
1 << DDRCTRL_SRST_SHIFT);
rockchip_udelay(10);
clrbits_le32(&ddr_phy->ddrphy_reg[0],
SOFT_RESET_MASK << SOFT_RESET_SHIFT);
rockchip_udelay(10);
setbits_le32(&ddr_phy->ddrphy_reg[0],
SOFT_DERESET_ANALOG);
rockchip_udelay(5);
setbits_le32(&ddr_phy->ddrphy_reg[0],
SOFT_DERESET_DIGITAL);
rockchip_udelay(1);
}
void phy_dll_bypass_set(struct rk322x_ddr_phy *ddr_phy, u32 freq)
{
u32 tmp;
setbits_le32(&ddr_phy->ddrphy_reg[0x13], 0x10);
setbits_le32(&ddr_phy->ddrphy_reg[0x26], 0x10);
setbits_le32(&ddr_phy->ddrphy_reg[0x36], 0x10);
setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x10);
setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x10);
clrbits_le32(&ddr_phy->ddrphy_reg[0x14], 0x8);
clrbits_le32(&ddr_phy->ddrphy_reg[0x27], 0x8);
clrbits_le32(&ddr_phy->ddrphy_reg[0x37], 0x8);
clrbits_le32(&ddr_phy->ddrphy_reg[0x47], 0x8);
clrbits_le32(&ddr_phy->ddrphy_reg[0x57], 0x8);
if (freq <= 400)
setbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f);
else
clrbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f);
if (freq <= 680)
tmp = 3;
else
tmp = 2;
writel(tmp, &ddr_phy->ddrphy_reg[0x28]);
writel(tmp, &ddr_phy->ddrphy_reg[0x38]);
writel(tmp, &ddr_phy->ddrphy_reg[0x48]);
writel(tmp, &ddr_phy->ddrphy_reg[0x58]);
}
static void send_command(struct rk322x_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 chan_info *chan,
struct rk322x_sdram_params *sdram_params)
{
struct rk322x_ddr_pctl *pctl = chan->pctl;
u32 dramtype = sdram_params->base.dramtype;
if (dramtype == DDR3) {
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 |
(sdram_params->phy_timing.mr[2] & CMD_ADDR_MASK) <<
CMD_ADDR_SHIFT);
send_command(pctl, 3, MRS_CMD,
(0x03 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
(sdram_params->phy_timing.mr[3] & CMD_ADDR_MASK) <<
CMD_ADDR_SHIFT);
send_command(pctl, 3, MRS_CMD,
(0x01 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
(sdram_params->phy_timing.mr[1] & CMD_ADDR_MASK) <<
CMD_ADDR_SHIFT);
send_command(pctl, 3, MRS_CMD,
(0x00 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT |
((sdram_params->phy_timing.mr[0] |
DDR3_DLL_RESET) &
CMD_ADDR_MASK) << CMD_ADDR_SHIFT);
send_command(pctl, 3, ZQCL_CMD, 0);
} else {
send_command(pctl, 3, MRS_CMD,
(0x63 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(0 & LPDDR23_OP_MASK) <<
LPDDR23_OP_SHIFT);
rockchip_udelay(10);
send_command(pctl, 3, MRS_CMD,
(0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(0xff & LPDDR23_OP_MASK) <<
LPDDR23_OP_SHIFT);
rockchip_udelay(1);
send_command(pctl, 3, MRS_CMD,
(0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(0xff & LPDDR23_OP_MASK) <<
LPDDR23_OP_SHIFT);
rockchip_udelay(1);
send_command(pctl, 3, MRS_CMD,
(1 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(sdram_params->phy_timing.mr[1] &
LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
send_command(pctl, 3, MRS_CMD,
(2 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(sdram_params->phy_timing.mr[2] &
LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
send_command(pctl, 3, MRS_CMD,
(3 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT |
(sdram_params->phy_timing.mr[3] &
LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
if (dramtype == LPDDR3)
send_command(pctl, 3, MRS_CMD, (11 & LPDDR23_MA_MASK) <<
LPDDR23_MA_SHIFT |
(sdram_params->phy_timing.mr11 &
LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT);
}
}
static u32 data_training(struct chan_info *chan)
{
struct rk322x_ddr_phy *ddr_phy = chan->phy;
struct rk322x_ddr_pctl *pctl = chan->pctl;
u32 value;
u32 bw = (readl(&ddr_phy->ddrphy_reg[0]) >> 4) & 0xf;
u32 ret;
/* disable auto refresh */
value = readl(&pctl->trefi) | (1 << 31);
writel(1 << 31, &pctl->trefi);
clrsetbits_le32(&ddr_phy->ddrphy_reg[2], 0x30,
DQS_SQU_CAL_SEL_CS0);
setbits_le32(&ddr_phy->ddrphy_reg[2], DQS_SQU_CAL_START);
rockchip_udelay(30);
ret = readl(&ddr_phy->ddrphy_reg[0xff]);
clrbits_le32(&ddr_phy->ddrphy_reg[2],
DQS_SQU_CAL_START);
/*
* since data training will take about 20us, so send some auto
* refresh(about 7.8us) to complement the lost time
*/
send_command(pctl, 3, PREA_CMD, 0);
send_command(pctl, 3, REF_CMD, 0);
writel(value, &pctl->trefi);
if (ret & 0x10) {
ret = -1;
} else {
ret = (ret & 0xf) ^ bw;
ret = (ret == 0) ? 0 : -1;
}
return ret;
}
static void move_to_config_state(struct rk322x_ddr_pctl *pctl)
{
unsigned int state;
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 rk322x_ddr_pctl *pctl)
{
unsigned int state;
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 move_to_lowpower_state(struct rk322x_ddr_pctl *pctl)
{
unsigned int state;
while (1) {
state = readl(&pctl->stat) & PCTL_STAT_MASK;
switch (state) {
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:
writel(SLEEP_STATE, &pctl->sctl);
while ((readl(&pctl->stat) & PCTL_STAT_MASK) !=
LOW_POWER)
;
break;
case LOW_POWER:
return;
default:
break;
}
}
}
/* pctl should in low power mode when call this function */
static void phy_softreset(struct dram_info *dram)
{
struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy;
struct rk322x_grf *grf = dram->grf;
writel(GRF_DDRPHY_BUFFEREN_CORE_EN, &grf->soc_con[0]);
clrbits_le32(&ddr_phy->ddrphy_reg[0], 0x3 << 2);
rockchip_udelay(1);
setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 2);
rockchip_udelay(5);
setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 3);
writel(GRF_DDRPHY_BUFFEREN_CORE_DIS, &grf->soc_con[0]);
}
/* bw: 2: 32bit, 1:16bit */
static void set_bw(struct dram_info *dram, u32 bw)
{
struct rk322x_ddr_pctl *pctl = dram->chan[0].pctl;
struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy;
struct rk322x_grf *grf = dram->grf;
if (bw == 1) {
setbits_le32(&pctl->ppcfg, 1);
clrbits_le32(&ddr_phy->ddrphy_reg[0], 0xc << 4);
writel(GRF_MSCH_NOC_16BIT_EN, &grf->soc_con[0]);
clrbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8);
clrbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8);
} else {
clrbits_le32(&pctl->ppcfg, 1);
setbits_le32(&ddr_phy->ddrphy_reg[0], 0xf << 4);
writel(GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN,
&grf->soc_con[0]);
setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8);
setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8);
}
}
static void pctl_cfg(struct rk322x_ddr_pctl *pctl,
struct rk322x_sdram_params *sdram_params,
struct rk322x_grf *grf)
{
u32 burst_len;
u32 bw;
u32 dramtype = sdram_params->base.dramtype;
if (sdram_params->ch[0].bw == 2)
bw = GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN;
else
bw = GRF_MSCH_NOC_16BIT_EN;
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(0x51010, &pctl->dfilpcfg0);
writel(1, &pctl->dfitphyupdtype0);
writel(0x0d, &pctl->dfitphyrdlat);
writel(0, &pctl->dfitphywrdata);
writel(0, &pctl->dfiupdcfg);
copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u,
sizeof(struct rk322x_pctl_timing));
if (dramtype == DDR3) {
writel((1 << 3) | (1 << 11),
&pctl->dfiodtcfg);
writel(7 << 16, &pctl->dfiodtcfg1);
writel((readl(&pctl->tcl) - 1) / 2 - 1, &pctl->dfitrddataen);
writel((readl(&pctl->tcwl) - 1) / 2 - 1, &pctl->dfitphywrlat);
writel(500, &pctl->trsth);
writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN |
DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW |
1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
&pctl->mcfg);
writel(bw | GRF_DDR3_EN, &grf->soc_con[0]);
} else {
if (sdram_params->phy_timing.bl & PHT_BL_8)
burst_len = MDDR_LPDDR2_BL_8;
else
burst_len = MDDR_LPDDR2_BL_4;
writel(readl(&pctl->tcl) / 2 - 1, &pctl->dfitrddataen);
writel(readl(&pctl->tcwl) / 2 - 1, &pctl->dfitphywrlat);
writel(0, &pctl->trsth);
if (dramtype == LPDDR2) {
writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
LPDDR2_S4 | LPDDR2_EN | burst_len |
(6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
&pctl->mcfg);
writel(0, &pctl->dfiodtcfg);
writel(0, &pctl->dfiodtcfg1);
} else {
writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
LPDDR2_S4 | LPDDR3_EN | burst_len |
(6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
&pctl->mcfg);
writel((1 << 3) | (1 << 2), &pctl->dfiodtcfg);
writel((7 << 16) | 4, &pctl->dfiodtcfg1);
}
writel(bw | GRF_LPDDR2_3_EN, &grf->soc_con[0]);
}
setbits_le32(&pctl->scfg, 1);
}
static void phy_cfg(struct chan_info *chan,
struct rk322x_sdram_params *sdram_params)
{
struct rk322x_ddr_phy *ddr_phy = chan->phy;
struct rk322x_service_sys *axi_bus = chan->msch;
struct rk322x_msch_timings *noc_timing = &sdram_params->base.noc_timing;
struct rk322x_phy_timing *phy_timing = &sdram_params->phy_timing;
struct rk322x_pctl_timing *pctl_timing = &sdram_params->pctl_timing;
u32 cmd_drv, clk_drv, dqs_drv, dqs_odt;
writel(noc_timing->ddrtiming, &axi_bus->ddrtiming);
writel(noc_timing->ddrmode, &axi_bus->ddrmode);
writel(noc_timing->readlatency, &axi_bus->readlatency);
writel(noc_timing->activate, &axi_bus->activate);
writel(noc_timing->devtodev, &axi_bus->devtodev);
switch (sdram_params->base.dramtype) {
case DDR3:
writel(PHY_DDR3 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
break;
case LPDDR2:
writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
break;
default:
writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]);
break;
}
writel(phy_timing->cl_al, &ddr_phy->ddrphy_reg[0xb]);
writel(pctl_timing->tcwl, &ddr_phy->ddrphy_reg[0xc]);
cmd_drv = PHY_RON_RTT_34OHM;
clk_drv = PHY_RON_RTT_45OHM;
dqs_drv = PHY_RON_RTT_34OHM;
if (sdram_params->base.dramtype == LPDDR2)
dqs_odt = PHY_RON_RTT_DISABLE;
else
dqs_odt = PHY_RON_RTT_225OHM;
writel(cmd_drv, &ddr_phy->ddrphy_reg[0x11]);
clrsetbits_le32(&ddr_phy->ddrphy_reg[0x12], (0x1f << 3), cmd_drv << 3);
writel(clk_drv, &ddr_phy->ddrphy_reg[0x16]);
writel(clk_drv, &ddr_phy->ddrphy_reg[0x18]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x20]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x2f]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x30]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x3f]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x40]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x4f]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x50]);
writel(dqs_drv, &ddr_phy->ddrphy_reg[0x5f]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x21]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x2e]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x31]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x3e]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x41]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x4e]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x51]);
writel(dqs_odt, &ddr_phy->ddrphy_reg[0x5e]);
}
void dram_cfg_rbc(struct chan_info *chan,
struct rk322x_sdram_params *sdram_params)
{
char noc_config;
int i = 0;
struct rk322x_sdram_channel *config = &sdram_params->ch[0];
struct rk322x_service_sys *axi_bus = chan->msch;
move_to_config_state(chan->pctl);
if ((config->rank == 2) && (config->cs1_row == config->cs0_row)) {
if ((config->col + config->bw) == 12) {
i = 14;
goto finish;
} else if ((config->col + config->bw) == 11) {
i = 15;
goto finish;
}
}
noc_config = ((config->cs0_row - 13) << 4) | ((config->bk - 2) << 2) |
(config->col + config->bw - 11);
for (i = 0; i < 11; i++) {
if (noc_config == ddr_cfg_2_rbc[i])
break;
}
if (i < 11)
goto finish;
noc_config = ((config->bk - 2) << 6) | ((config->cs0_row - 13) << 4) |
(config->col + config->bw - 11);
for (i = 11; i < 14; i++) {
if (noc_config == ddr_cfg_2_rbc[i])
break;
}
if (i < 14)
goto finish;
else
i = 0;
finish:
writel(i, &axi_bus->ddrconf);
move_to_access_state(chan->pctl);
}
static void dram_all_config(const struct dram_info *dram,
struct rk322x_sdram_params *sdram_params)
{
struct rk322x_sdram_channel *info = &sdram_params->ch[0];
u32 sys_reg = 0;
sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
sys_reg |= (1 - 1) << SYS_REG_NUM_CH_SHIFT;
sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(0);
sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(0);
sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(0);
sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(0);
sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(0);
sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(0);
sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(0);
sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(0);
sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(0);
writel(sys_reg, &dram->grf->os_reg[2]);
}
#define TEST_PATTEN 0x5aa5f00f
static int dram_cap_detect(struct dram_info *dram,
struct rk322x_sdram_params *sdram_params)
{
u32 bw, row, col, addr;
u32 ret = 0;
struct rk322x_service_sys *axi_bus = dram->chan[0].msch;
if (sdram_params->base.dramtype == DDR3)
sdram_params->ch[0].dbw = 1;
else
sdram_params->ch[0].dbw = 2;
move_to_config_state(dram->chan[0].pctl);
/* bw detect */
set_bw(dram, 2);
if (data_training(&dram->chan[0]) == 0) {
bw = 2;
} else {
bw = 1;
set_bw(dram, 1);
move_to_lowpower_state(dram->chan[0].pctl);
phy_softreset(dram);
move_to_config_state(dram->chan[0].pctl);
if (data_training(&dram->chan[0])) {
printf("BW detect error\n");
ret = -EINVAL;
}
}
sdram_params->ch[0].bw = bw;
sdram_params->ch[0].bk = 3;
if (bw == 2)
writel(6, &axi_bus->ddrconf);
else
writel(3, &axi_bus->ddrconf);
move_to_access_state(dram->chan[0].pctl);
for (col = 11; col >= 9; col--) {
writel(0, CONFIG_SYS_SDRAM_BASE);
addr = CONFIG_SYS_SDRAM_BASE +
(1 << (col + bw - 1));
writel(TEST_PATTEN, addr);
if ((readl(addr) == TEST_PATTEN) &&
(readl(CONFIG_SYS_SDRAM_BASE) == 0))
break;
}
if (col == 8) {
printf("Col detect error\n");
ret = -EINVAL;
goto out;
} else {
sdram_params->ch[0].col = col;
}
writel(10, &axi_bus->ddrconf);
/* Detect row*/
for (row = 16; row >= 12; row--) {
writel(0, CONFIG_SYS_SDRAM_BASE);
addr = CONFIG_SYS_SDRAM_BASE + (1u << (row + 11 + 3 - 1));
writel(TEST_PATTEN, addr);
if ((readl(addr) == TEST_PATTEN) &&
(readl(CONFIG_SYS_SDRAM_BASE) == 0))
break;
}
if (row == 11) {
printf("Row detect error\n");
ret = -EINVAL;
} else {
sdram_params->ch[0].cs1_row = row;
sdram_params->ch[0].row_3_4 = 0;
sdram_params->ch[0].cs0_row = row;
}
/* cs detect */
writel(0, CONFIG_SYS_SDRAM_BASE);
writel(TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30));
writel(~TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30) + 4);
if ((readl(CONFIG_SYS_SDRAM_BASE + (1u << 30)) == TEST_PATTEN) &&
(readl(CONFIG_SYS_SDRAM_BASE) == 0))
sdram_params->ch[0].rank = 2;
else
sdram_params->ch[0].rank = 1;
out:
return ret;
}
static int sdram_init(struct dram_info *dram,
struct rk322x_sdram_params *sdram_params)
{
int ret;
ret = clk_set_rate(&dram->ddr_clk,
sdram_params->base.ddr_freq * MHz * 2);
if (ret < 0) {
printf("Could not set DDR clock\n");
return ret;
}
phy_pctrl_reset(dram->cru, dram->chan[0].phy);
phy_dll_bypass_set(dram->chan[0].phy, sdram_params->base.ddr_freq);
pctl_cfg(dram->chan[0].pctl, sdram_params, dram->grf);
phy_cfg(&dram->chan[0], sdram_params);
writel(POWER_UP_START, &dram->chan[0].pctl->powctl);
while (!(readl(&dram->chan[0].pctl->powstat) & POWER_UP_DONE))
;
memory_init(&dram->chan[0], sdram_params);
move_to_access_state(dram->chan[0].pctl);
ret = dram_cap_detect(dram, sdram_params);
if (ret)
goto out;
dram_cfg_rbc(&dram->chan[0], sdram_params);
dram_all_config(dram, sdram_params);
out:
return ret;
}
static int rk322x_dmc_ofdata_to_platdata(struct udevice *dev)
{
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
struct rk322x_sdram_params *params = dev_get_platdata(dev);
const void *blob = gd->fdt_blob;
int node = dev_of_offset(dev);
int ret;
params->num_channels = 1;
ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
(u32 *)¶ms->pctl_timing,
sizeof(params->pctl_timing) / sizeof(u32));
if (ret) {
printf("%s: Cannot read rockchip,pctl-timing\n", __func__);
return -EINVAL;
}
ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
(u32 *)¶ms->phy_timing,
sizeof(params->phy_timing) / sizeof(u32));
if (ret) {
printf("%s: Cannot read rockchip,phy-timing\n", __func__);
return -EINVAL;
}
ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
(u32 *)¶ms->base,
sizeof(params->base) / sizeof(u32));
if (ret) {
printf("%s: Cannot read rockchip,sdram-params\n", __func__);
return -EINVAL;
}
ret = regmap_init_mem(dev_ofnode(dev), ¶ms->map);
if (ret)
return ret;
#endif
return 0;
}
#endif /* CONFIG_TPL_BUILD */
#if CONFIG_IS_ENABLED(OF_PLATDATA)
static int conv_of_platdata(struct udevice *dev)
{
struct rk322x_sdram_params *plat = dev_get_platdata(dev);
struct dtd_rockchip_rk322x_dmc *of_plat = &plat->of_plat;
int ret;
memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing,
sizeof(plat->pctl_timing));
memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing,
sizeof(plat->phy_timing));
memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base));
plat->num_channels = 1;
ret = regmap_init_mem_platdata(dev, of_plat->reg,
ARRAY_SIZE(of_plat->reg) / 2,
&plat->map);
if (ret)
return ret;
return 0;
}
#endif
static int rk322x_dmc_probe(struct udevice *dev)
{
#ifdef CONFIG_TPL_BUILD
struct rk322x_sdram_params *plat = dev_get_platdata(dev);
int ret;
struct udevice *dev_clk;
#endif
struct dram_info *priv = dev_get_priv(dev);
priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
#ifdef CONFIG_TPL_BUILD
#if CONFIG_IS_ENABLED(OF_PLATDATA)
ret = conv_of_platdata(dev);
if (ret)
return ret;
#endif
priv->chan[0].msch = syscon_get_first_range(ROCKCHIP_SYSCON_MSCH);
priv->chan[0].pctl = regmap_get_range(plat->map, 0);
priv->chan[0].phy = regmap_get_range(plat->map, 1);
ret = rockchip_get_clk(&dev_clk);
if (ret)
return ret;
priv->ddr_clk.id = CLK_DDR;
ret = clk_request(dev_clk, &priv->ddr_clk);
if (ret)
return ret;
priv->cru = rockchip_get_cru();
if (IS_ERR(priv->cru))
return PTR_ERR(priv->cru);
ret = sdram_init(priv, plat);
if (ret)
return ret;
#else
priv->info.base = CONFIG_SYS_SDRAM_BASE;
priv->info.size = rockchip_sdram_size(
(phys_addr_t)&priv->grf->os_reg[2]);
#endif
return 0;
}
static int rk322x_dmc_get_info(struct udevice *dev, struct ram_info *info)
{
struct dram_info *priv = dev_get_priv(dev);
*info = priv->info;
return 0;
}
static struct ram_ops rk322x_dmc_ops = {
.get_info = rk322x_dmc_get_info,
};
static const struct udevice_id rk322x_dmc_ids[] = {
{ .compatible = "rockchip,rk3228-dmc" },
{ }
};
U_BOOT_DRIVER(dmc_rk322x) = {
.name = "rockchip_rk322x_dmc",
.id = UCLASS_RAM,
.of_match = rk322x_dmc_ids,
.ops = &rk322x_dmc_ops,
#ifdef CONFIG_TPL_BUILD
.ofdata_to_platdata = rk322x_dmc_ofdata_to_platdata,
#endif
.probe = rk322x_dmc_probe,
.priv_auto_alloc_size = sizeof(struct dram_info),
#ifdef CONFIG_TPL_BUILD
.platdata_auto_alloc_size = sizeof(struct rk322x_sdram_params),
#endif
};