Add sdram initialisation code which will be ussed by tpl first boot stage.
We need to implement sdram initialisation in tpl due to size issues on rk3066
platform.
Signed-off-by: Paweł Jarosz <paweljarosz3...@gmail.com>
---
arch/arm/include/asm/arch-rockchip/ddr_rk3188.h | 5 +
arch/arm/mach-rockchip/rk3066/sdram_init.c | 995 ++++++++++++++++++++++++
2 files changed, 1000 insertions(+)
create mode 100644 arch/arm/mach-rockchip/rk3066/sdram_init.c
diff --git a/arch/arm/include/asm/arch-rockchip/ddr_rk3188.h
b/arch/arm/include/asm/arch-rockchip/ddr_rk3188.h
index 3d7929f..74d11c6 100644
--- a/arch/arm/include/asm/arch-rockchip/ddr_rk3188.h
+++ b/arch/arm/include/asm/arch-rockchip/ddr_rk3188.h
@@ -10,6 +10,11 @@
#include <asm/arch/ddr_rk3288.h>
/*
+ * RK3066 Tpl memory init.
+ */
+void sdram_initialise(void);
+
+/*
* RK3188 Memory scheduler register map.
*/
struct rk3188_msch {
diff --git a/arch/arm/mach-rockchip/rk3066/sdram_init.c
b/arch/arm/mach-rockchip/rk3066/sdram_init.c
new file mode 100644
index 0000000..e7e506a
--- /dev/null
+++ b/arch/arm/mach-rockchip/rk3066/sdram_init.c
@@ -0,0 +1,995 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Adapted from the very similar rk3288 ddr init.
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <errno.h>
+#include <ram.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3066.h>
+#include <asm/arch/ddr_rk3188.h>
+#include <asm/arch/grf_rk3066.h>
+#include <asm/arch/pmu_rk3188.h>
+#include <asm/arch/sdram.h>
+#include <linux/err.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct pll_div {
+ u32 nr;
+ u32 nf;
+ u32 no;
+};
+
+enum {
+ VCO_MAX_HZ = 1416U * 1000000,
+ VCO_MIN_HZ = 300 * 1000000,
+ OUTPUT_MAX_HZ = 1416U * 1000000,
+ OUTPUT_MIN_HZ = 30 * 1000000,
+ FREF_MAX_HZ = 1416U * 1000000,
+ FREF_MIN_HZ = 30 * 1000,
+};
+
+enum {
+ /* PLL CON0 */
+ PLL_OD_MASK = 0x0f,
+
+ /* PLL CON1 */
+ PLL_NF_MASK = 0x1fff,
+
+ /* PLL CON2 */
+ PLL_BWADJ_MASK = 0x0fff,
+
+ /* PLL CON3 */
+ PLL_RESET_SHIFT = 5,
+
+ /* GRF_SOC_STATUS0 */
+ SOCSTS_DPLL_LOCK = 1 << 4,
+ SOCSTS_APLL_LOCK = 1 << 5,
+ SOCSTS_CPLL_LOCK = 1 << 6,
+ SOCSTS_GPLL_LOCK = 1 << 7,
+};
+
+#define CRU_BASE 0x20000000
+#define GRF_BASE 0x20008000
+#define PMU_BASE 0x20004000
+#define PCTL_BASE 0x20020000
+#define PUBL_BASE 0x20040000
+#define NOC_BASE 0x10128000
+
+#define RK3066_PCTL_TIMING_DEFAULT { \
+ .togcnt1u = 0x12c, \
+ .tinit = 0xc8, \
+ .trsth = 0x1f4, \
+ .togcnt100n = 0x1e, \
+ .trefi = 0x4e, \
+ .tmrd = 0x4, \
+ .trfc = 0x69, \
+ .trp = 0x6, \
+ .trtw = 0x3, \
+ .tal = 0x0, \
+ .tcl = 0x6, \
+ .tcwl = 0x5, \
+ .tras = 0xc, \
+ .trc = 0x10, \
+ .trcd = 0x6, \
+ .trrd = 0x4, \
+ .trtp = 0x4, \
+ .twr = 0x5, \
+ .twtr = 0x4, \
+ .texsr = 0x200, \
+ .txp = 0x3, \
+ .txpdll = 0xa, \
+ .tzqcs = 0x40, \
+ .tzqcsi = 0x0, \
+ .tdqs = 0x1, \
+ .tcksre = 0x5, \
+ .tcksrx = 0x5, \
+ .tcke = 0x3, \
+ .tmod = 0xc, \
+ .trstl = 0x1e, \
+ .tzqcl = 0x100, \
+ .tmrr = 0x0, \
+ .tckesr = 0x4, \
+ .tdpd = 0x0 \
+}
+
+#define RK3066_PHY_TIMING_DEFAULT { \
+ .dtpr0 = 0x208c6690, \
+ .dtpr1 = 0x690878, \
+ .dtpr2 = 0x10022a00, \
+ .mr = { 0x220, 0x40, 0x0, 0x0 } \
+}
+
+#define RK3066_SDRAM_PARAMS_DEFAULT { \
+ .noc_timing = 0x24716310, \
+ .noc_activate = 0, \
+ .ddrconfig = 2, \
+ .ddr_freq = 300000000, \
+ .dramtype = 3, \
+ .stride = 9, \
+ .odt = 0 \
+}
+
+#ifndef RK3066_PCTL_TIMING
+#define RK3066_PCTL_TIMING RK3066_PCTL_TIMING_DEFAULT
+#endif
+
+#ifndef RK3066_PHY_TIMING
+#define RK3066_PHY_TIMING RK3066_PHY_TIMING_DEFAULT
+#endif
+
+#ifndef RK3066_SDRAM_PARAMS
+#define RK3066_SDRAM_PARAMS RK3066_SDRAM_PARAMS_DEFAULT
+#endif
+
+struct chan_info {
+ struct rk3288_ddr_pctl *pctl;
+ struct rk3288_ddr_publ *publ;
+ struct rk3188_msch *msch;
+};
+
+struct dram_info {
+ struct chan_info chan[1];
+ struct ram_info info;
+ struct rk3066_cru *cru;
+ struct rk3066_grf *grf;
+ struct rk3188_pmu *pmu;
+};
+
+struct rk3066_sdram_params {
+ struct rk3288_sdram_channel ch[2];
+ struct rk3288_sdram_pctl_timing pctl_timing;
+ struct rk3288_sdram_phy_timing phy_timing;
+ struct rk3288_base_params base;
+ int num_channels;
+ struct regmap *map;
+};
+
+const int ddrconf_table[] = {
+ /*
+ * [5:4] row(13+n)
+ * [1:0] col(9+n), assume bw=2
+ * row col,bw
+ */
+ 0,
+ ((2 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((1 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((0 << DDRCONF_ROW_SHIFT) | 1 << DDRCONF_COL_SHIFT),
+ ((2 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((1 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((0 << DDRCONF_ROW_SHIFT) | 2 << DDRCONF_COL_SHIFT),
+ ((1 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT),
+ ((0 << DDRCONF_ROW_SHIFT) | 0 << DDRCONF_COL_SHIFT),
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+ 0,
+};
+
+#define TEST_PATTEN 0x5aa5f00f
+#define DQS_GATE_TRAINING_ERROR_RANK0 (1 << 4)
+#define DQS_GATE_TRAINING_ERROR_RANK1 (2 << 4)
+
+
+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++;
+ }
+}
+
+static void ddr_reset(struct rk3066_cru *cru, u32 ch, u32 ctl, u32 phy)
+{
+ u32 phy_ctl_srstn_shift = 13;
+ u32 ctl_psrstn_shift = 11;
+ u32 ctl_srstn_shift = 10;
+ u32 phy_psrstn_shift = 9;
+ u32 phy_srstn_shift = 8;
+
+ rk_clrsetreg(&cru->cru_softrst_con[5],
+ 1 << phy_ctl_srstn_shift | 1 << ctl_psrstn_shift |
+ 1 << ctl_srstn_shift | 1 << phy_psrstn_shift |
+ 1 << phy_srstn_shift,
+ phy << phy_ctl_srstn_shift | ctl << ctl_psrstn_shift |
+ ctl << ctl_srstn_shift | phy << phy_psrstn_shift |
+ phy << phy_srstn_shift);
+}
+
+static void ddr_phy_ctl_reset(struct rk3066_cru *cru, u32 ch, u32 n)
+{
+ u32 phy_ctl_srstn_shift = 13;
+
+ rk_clrsetreg(&cru->cru_softrst_con[5],
+ 1 << phy_ctl_srstn_shift, n << phy_ctl_srstn_shift);
+}
+
+static void phy_pctrl_reset(struct rk3066_cru *cru,
+ struct rk3288_ddr_publ *publ,
+ int channel)
+{
+ int i;
+
+ ddr_reset(cru, channel, 1, 1);
+ udelay(1);
+ clrbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
+ for (i = 0; i < 4; i++)
+ clrbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
+
+ udelay(10);
+ setbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
+ for (i = 0; i < 4; i++)
+ setbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
+
+ udelay(10);
+ ddr_reset(cru, channel, 1, 0);
+ udelay(10);
+ ddr_reset(cru, channel, 0, 0);
+ udelay(10);
+}
+
+static void phy_dll_bypass_set(struct rk3288_ddr_publ *publ,
+ u32 freq)
+{
+ int i;
+
+ if (freq <= 250000000) {
+ if (freq <= 150000000)
+ clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+ else
+ setbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+ setbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
+ for (i = 0; i < 4; i++)
+ setbits_le32(&publ->datx8[i].dxdllcr,
+ DXDLLCR_DLLDIS);
+
+ setbits_le32(&publ->pir, PIR_DLLBYP);
+ } else {
+ clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
+ clrbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
+ for (i = 0; i < 4; i++) {
+ clrbits_le32(&publ->datx8[i].dxdllcr,
+ DXDLLCR_DLLDIS);
+ }
+
+ clrbits_le32(&publ->pir, PIR_DLLBYP);
+ }
+}
+
+static void dfi_cfg(struct rk3288_ddr_pctl *pctl, u32 dramtype)
+{
+ writel(DFI_INIT_START, &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(2 << TCTRL_DELAY_TIME_SHIFT, &pctl->dfitctrldelay);
+ writel(1 << TPHY_WRDATA_TIME_SHIFT, &pctl->dfitphywrdata);
+ writel(0xf << TPHY_RDLAT_TIME_SHIFT, &pctl->dfitphyrdlat);
+ writel(2 << TDRAM_CLK_DIS_TIME_SHIFT, &pctl->dfitdramclkdis);
+ writel(2 << TDRAM_CLK_EN_TIME_SHIFT, &pctl->dfitdramclken);
+ writel(1, &pctl->dfitphyupdtype0);
+
+ /* 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);
+}
+
+static void ddr_set_ddr3_mode(struct rk3066_grf *grf, uint channel,
+ bool ddr3_mode)
+{
+ uint mask, val;
+
+ mask = MSCH4_MAINDDR3_MASK << MSCH4_MAINDDR3_SHIFT;
+ val = ddr3_mode << MSCH4_MAINDDR3_SHIFT;
+ rk_clrsetreg(&grf->soc_con2, mask, val);
+}
+
+static void ddr_rank_2_row15en(struct rk3066_grf *grf, bool enable)
+{
+ uint mask, val;
+
+ mask = RANK_TO_ROW15_EN_MASK << RANK_TO_ROW15_EN_SHIFT;
+ val = enable << RANK_TO_ROW15_EN_SHIFT;
+ rk_clrsetreg(&grf->soc_con2, mask, val);
+}
+
+static void pctl_cfg(int channel, struct rk3288_ddr_pctl *pctl,
+ struct rk3066_sdram_params *sdram_params,
+ struct rk3066_grf *grf)
+{
+ copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u,
+ sizeof(sdram_params->pctl_timing));
+ switch (sdram_params->base.dramtype) {
+ case DDR3:
+ if (sdram_params->phy_timing.mr[1] & DDR3_DLL_DISABLE) {
+ writel(sdram_params->pctl_timing.tcl - 3,
+ &pctl->dfitrddataen);
+ } else {
+ writel(sdram_params->pctl_timing.tcl - 2,
+ &pctl->dfitrddataen);
+ }
+ writel(sdram_params->pctl_timing.tcwl - 1,
+ &pctl->dfitphywrlat);
+ 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);
+ ddr_set_ddr3_mode(grf, channel, true);
+ break;
+ }
+
+ setbits_le32(&pctl->scfg, 1);
+}
+
+static void phy_cfg(const struct chan_info *chan, int channel,
+ struct rk3066_sdram_params *sdram_params)
+{
+ struct rk3288_ddr_publ *publ = chan->publ;
+ struct rk3188_msch *msch = chan->msch;
+ uint ddr_freq_mhz = sdram_params->base.ddr_freq / 1000000;
+ u32 dinit2;
+ int i;
+
+ dinit2 = DIV_ROUND_UP(ddr_freq_mhz * 200000, 1000);
+ /* DDR PHY Timing */
+ copy_to_reg(&publ->dtpr[0], &sdram_params->phy_timing.dtpr0,
+ sizeof(sdram_params->phy_timing));
+ writel(sdram_params->base.noc_timing, &msch->ddrtiming);
+ writel(0x3f, &msch->readlatency);
+ writel(DIV_ROUND_UP(ddr_freq_mhz * 5120, 1000) << PRT_DLLLOCK_SHIFT |
+ DIV_ROUND_UP(ddr_freq_mhz * 50, 1000) << PRT_DLLSRST_SHIFT |
+ 8 << PRT_ITMSRST_SHIFT, &publ->ptr[0]);
+ writel(DIV_ROUND_UP(ddr_freq_mhz * 500000, 1000) << PRT_DINIT0_SHIFT |
+ DIV_ROUND_UP(ddr_freq_mhz * 400, 1000) << PRT_DINIT1_SHIFT,
+ &publ->ptr[1]);
+ writel(min(dinit2, 0x1ffffU) << PRT_DINIT2_SHIFT |
+ DIV_ROUND_UP(ddr_freq_mhz * 1000, 1000) << PRT_DINIT3_SHIFT,
+ &publ->ptr[2]);
+
+ switch (sdram_params->base.dramtype) {
+ case DDR3:
+ clrbits_le32(&publ->pgcr, 0x1f);
+ clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT,
+ DDRMD_DDR3 << DDRMD_SHIFT);
+ break;
+ }
+ if (sdram_params->base.odt) {
+ /*dynamic RTT enable */
+ for (i = 0; i < 4; i++)
+ setbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+ } else {
+ /*dynamic RTT disable */
+ for (i = 0; i < 4; i++)
+ clrbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+ }
+}
+
+static void phy_init(struct rk3288_ddr_publ *publ)
+{
+ setbits_le32(&publ->pir, PIR_INIT | PIR_DLLSRST
+ | PIR_DLLLOCK | PIR_ZCAL | PIR_ITMSRST | PIR_CLRSR);
+ udelay(1);
+ while ((readl(&publ->pgsr) &
+ (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE)) !=
+ (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE))
+ ;
+}
+
+static void send_command(struct rk3288_ddr_pctl *pctl, u32 rank,
+ u32 cmd, u32 arg)
+{
+ writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd);
+ udelay(1);
+ while (readl(&pctl->mcmd) & START_CMD)
+ ;
+}
+
+static inline void send_command_op(struct rk3288_ddr_pctl *pctl,
+ u32 rank, u32 cmd, u32 ma, u32 op)
+{
+ send_command(pctl, rank, cmd, (ma & LPDDR2_MA_MASK) << LPDDR2_MA_SHIFT |
+ (op & LPDDR2_OP_MASK) << LPDDR2_OP_SHIFT);
+}
+
+static void memory_init(struct rk3288_ddr_publ *publ,
+ u32 dramtype)
+{
+ setbits_le32(&publ->pir,
+ (PIR_INIT | PIR_DRAMINIT | PIR_LOCKBYP
+ | PIR_ZCALBYP | PIR_CLRSR | PIR_ICPC
+ | (dramtype == DDR3 ? PIR_DRAMRST : 0)));
+ udelay(1);
+ while ((readl(&publ->pgsr) & (PGSR_IDONE | PGSR_DLDONE))
+ != (PGSR_IDONE | PGSR_DLDONE))
+ ;
+}
+
+static void move_to_config_state(struct rk3288_ddr_publ *publ,
+ struct rk3288_ddr_pctl *pctl)
+{
+ unsigned int state;
+
+ while (1) {
+ state = readl(&pctl->stat) & PCTL_STAT_MSK;
+
+ switch (state) {
+ case LOW_POWER:
+ writel(WAKEUP_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MSK)
+ != ACCESS)
+ ;
+ /* wait DLL lock */
+ while ((readl(&publ->pgsr) & PGSR_DLDONE)
+ != PGSR_DLDONE)
+ ;
+ /*
+ * 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_MSK) != CONFIG)
+ ;
+ break;
+ case CONFIG:
+ return;
+ default:
+ break;
+ }
+ }
+}
+
+static void set_bandwidth_ratio(const struct chan_info *chan, int channel,
+ u32 n, struct rk3066_grf *grf)
+{
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+ struct rk3288_ddr_publ *publ = chan->publ;
+ struct rk3188_msch *msch = chan->msch;
+
+ if (n == 1) {
+ setbits_le32(&pctl->ppcfg, 1);
+ setbits_le32(&msch->ddrtiming, 1 << 31);
+ /* Data Byte disable*/
+ clrbits_le32(&publ->datx8[2].dxgcr, 1);
+ clrbits_le32(&publ->datx8[3].dxgcr, 1);
+ /* disable DLL */
+ setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
+ setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
+ } else {
+ clrbits_le32(&pctl->ppcfg, 1);
+ clrbits_le32(&msch->ddrtiming, 1 << 31);
+ /* Data Byte enable*/
+ setbits_le32(&publ->datx8[2].dxgcr, 1);
+ setbits_le32(&publ->datx8[3].dxgcr, 1);
+
+ /* enable DLL */
+ clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
+ clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
+ /* reset DLL */
+ clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
+ clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
+ udelay(10);
+ setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
+ setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
+ }
+ setbits_le32(&pctl->dfistcfg0, 1 << 2);
+}
+
+static int data_training(const struct chan_info *chan, int channel,
+ struct rk3066_sdram_params *sdram_params)
+{
+ unsigned int j;
+ int ret = 0;
+ u32 rank;
+ int i;
+ u32 step[2] = { PIR_QSTRN, PIR_RVTRN };
+ struct rk3288_ddr_publ *publ = chan->publ;
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+
+ /* disable auto refresh */
+ writel(0, &pctl->trefi);
+
+ if (sdram_params->base.dramtype != LPDDR3)
+ setbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
+ rank = sdram_params->ch[channel].rank | 1;
+ for (j = 0; j < ARRAY_SIZE(step); j++) {
+ /*
+ * trigger QSTRN and RVTRN
+ * clear DTDONE status
+ */
+ setbits_le32(&publ->pir, PIR_CLRSR);
+
+ /* trigger DTT */
+ setbits_le32(&publ->pir,
+ PIR_INIT | step[j] | PIR_LOCKBYP | PIR_ZCALBYP |
+ PIR_CLRSR);
+ udelay(1);
+ /* wait echo byte DTDONE */
+ while ((readl(&publ->datx8[0].dxgsr[0]) & rank)
+ != rank)
+ ;
+ while ((readl(&publ->datx8[1].dxgsr[0]) & rank)
+ != rank)
+ ;
+ if (!(readl(&pctl->ppcfg) & 1)) {
+ while ((readl(&publ->datx8[2].dxgsr[0])
+ & rank) != rank)
+ ;
+ while ((readl(&publ->datx8[3].dxgsr[0])
+ & rank) != rank)
+ ;
+ }
+ if (readl(&publ->pgsr) &
+ (PGSR_DTERR | PGSR_RVERR | PGSR_RVEIRR)) {
+ ret = -1;
+ break;
+ }
+ }
+ /* send some auto refresh to complement the lost while DTT */
+ for (i = 0; i < (rank > 1 ? 8 : 4); i++)
+ send_command(pctl, rank, REF_CMD, 0);
+
+ if (sdram_params->base.dramtype != LPDDR3)
+ clrbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
+
+ /* resume auto refresh */
+ writel(sdram_params->pctl_timing.trefi, &pctl->trefi);
+
+ return ret;
+}
+
+static void move_to_access_state(const struct chan_info *chan)
+{
+ struct rk3288_ddr_publ *publ = chan->publ;
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+ unsigned int state;
+
+ while (1) {
+ state = readl(&pctl->stat) & PCTL_STAT_MSK;
+
+ switch (state) {
+ case LOW_POWER:
+ if (((readl(&pctl->stat) >> LP_TRIG_SHIFT) &
+ LP_TRIG_MASK) == 1)
+ return;
+
+ writel(WAKEUP_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS)
+ ;
+ /* wait DLL lock */
+ while ((readl(&publ->pgsr) & PGSR_DLDONE)
+ != PGSR_DLDONE)
+ ;
+ break;
+ case INIT_MEM:
+ writel(CFG_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
+ ;
+ /* fallthrough */
+ case CONFIG:
+ writel(GO_STATE, &pctl->sctl);
+ while ((readl(&pctl->stat) & PCTL_STAT_MSK) == CONFIG)
+ ;
+ break;
+ case ACCESS:
+ return;
+ default:
+ break;
+ }
+ }
+}
+
+static void dram_cfg_rbc(const struct chan_info *chan, u32 chnum,
+ struct rk3066_sdram_params *sdram_params)
+{
+ struct rk3288_ddr_publ *publ = chan->publ;
+
+ if (sdram_params->ch[chnum].bk == 3)
+ clrsetbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT,
+ 1 << PDQ_SHIFT);
+ else
+ clrbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT);
+
+ writel(sdram_params->base.ddrconfig, &chan->msch->ddrconf);
+}
+
+static void dram_all_config(const struct dram_info *dram,
+ struct rk3066_sdram_params *sdram_params)
+{
+ unsigned int chan;
+ u32 sys_reg = 0;
+
+ sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
+ sys_reg |= (sdram_params->num_channels - 1) << SYS_REG_NUM_CH_SHIFT;
+ for (chan = 0; chan < sdram_params->num_channels; chan++) {
+ const struct rk3288_sdram_channel *info =
+ &sdram_params->ch[chan];
+
+ sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(chan);
+ sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(chan);
+ sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(chan);
+ sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(chan);
+ sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(chan);
+ sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(chan);
+ sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(chan);
+ sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(chan);
+ sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(chan);
+
+ dram_cfg_rbc(&dram->chan[chan], chan, sdram_params);
+ }
+ if (sdram_params->ch[0].rank == 2)
+ ddr_rank_2_row15en(dram->grf, 0);
+ else
+ ddr_rank_2_row15en(dram->grf, 1);
+
+ writel(sys_reg, &dram->pmu->sys_reg[2]);
+}
+
+static int sdram_rank_bw_detect(struct dram_info *dram, int channel,
+ struct rk3066_sdram_params *sdram_params)
+{
+ int reg;
+ int need_trainig = 0;
+ const struct chan_info *chan = &dram->chan[channel];
+ struct rk3288_ddr_publ *publ = chan->publ;
+
+ ddr_rank_2_row15en(dram->grf, 0);
+
+ if (data_training(chan, channel, sdram_params) < 0) {
+ reg = readl(&publ->datx8[0].dxgsr[0]);
+ /* Check the result for rank 0 */
+ if ((channel == 0) && (reg & DQS_GATE_TRAINING_ERROR_RANK0)) {
+ return -EIO;
+ }
+
+ /* Check the result for rank 1 */
+ if (reg & DQS_GATE_TRAINING_ERROR_RANK1) {
+ sdram_params->ch[channel].rank = 1;
+ clrsetbits_le32(&publ->pgcr, 0xF << 18,
+ sdram_params->ch[channel].rank << 18);
+ need_trainig = 1;
+ }
+ reg = readl(&publ->datx8[2].dxgsr[0]);
+ if (reg & (1 << 4)) {
+ sdram_params->ch[channel].bw = 1;
+ set_bandwidth_ratio(chan, channel,
+ sdram_params->ch[channel].bw,
+ dram->grf);
+ need_trainig = 1;
+ }
+ }
+ /* Assume the Die bit width are the same with the chip bit width */
+ sdram_params->ch[channel].dbw = sdram_params->ch[channel].bw;
+
+ if (need_trainig &&
+ (data_training(chan, channel, sdram_params) < 0)) {
+ if (sdram_params->base.dramtype == LPDDR3) {
+ ddr_phy_ctl_reset(dram->cru, channel, 1);
+ udelay(10);
+ ddr_phy_ctl_reset(dram->cru, channel, 0);
+ udelay(10);
+ }
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
+ * Detect ram columns and rows.
+ * @dram: dram info struct
+ * @channel: channel number to handle
+ * @sdram_params: sdram parameters, function will fill in col and row values
+ *
+ * Returns 0 or negative on error.
+ */
+static int sdram_col_row_detect(struct dram_info *dram, int channel,
+ struct rk3066_sdram_params *sdram_params)
+{
+ int row, col;
+ unsigned int addr;
+ const struct chan_info *chan = &dram->chan[channel];
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+ struct rk3288_ddr_publ *publ = chan->publ;
+ int ret = 0;
+
+ /* Detect col */
+ for (col = 11; col >= 9; col--) {
+ writel(0, CONFIG_SYS_SDRAM_BASE);
+ addr = CONFIG_SYS_SDRAM_BASE +
+ (1 << (col + sdram_params->ch[channel].bw - 1));
+ writel(TEST_PATTEN, addr);
+ if ((readl(addr) == TEST_PATTEN) &&
+ (readl(CONFIG_SYS_SDRAM_BASE) == 0))
+ break;
+ }
+ if (col == 8) {
+ ret = -EINVAL;
+ goto out;
+ } else {
+ sdram_params->ch[channel].col = col;
+ }
+
+ ddr_rank_2_row15en(dram->grf, 1);
+ move_to_config_state(publ, pctl);
+ writel(1, &chan->msch->ddrconf);
+ move_to_access_state(chan);
+ /* Detect row, max 15,min13 in rk3066*/
+ for (row = 16; row >= 13; row--) {
+ writel(0, CONFIG_SYS_SDRAM_BASE);
+ addr = CONFIG_SYS_SDRAM_BASE + (1 << (row + 15 - 1));
+ writel(TEST_PATTEN, addr);
+ if ((readl(addr) == TEST_PATTEN) &&
+ (readl(CONFIG_SYS_SDRAM_BASE) == 0))
+ break;
+ }
+ if (row == 12) {
+ ret = -EINVAL;
+ } else {
+ sdram_params->ch[channel].cs1_row = row;
+ sdram_params->ch[channel].row_3_4 = 0;
+ sdram_params->ch[channel].cs0_row = row;
+ }
+
+out:
+ return ret;
+}
+
+static int sdram_get_niu_config(struct rk3066_sdram_params *sdram_params)
+{
+ int i, tmp, size, ret = 0;
+
+ tmp = sdram_params->ch[0].col - 9;
+ tmp -= (sdram_params->ch[0].bw == 2) ? 0 : 1;
+ tmp |= ((sdram_params->ch[0].cs0_row - 13) << 4);
+ size = sizeof(ddrconf_table)/sizeof(ddrconf_table[0]);
+ for (i = 0; i < size; i++)
+ if (tmp == ddrconf_table[i])
+ break;
+ if (i >= size) {
+ ret = -EINVAL;
+ } else {
+ sdram_params->base.ddrconfig = i;
+ }
+
+ return ret;
+}
+
+size_t sdram_size_mb(struct rk3188_pmu *pmu)
+{
+ u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;
+ size_t chipsize_mb = 0;
+ size_t size_mb = 0;
+ u32 ch;
+ u32 sys_reg = readl(&pmu->sys_reg[2]);
+ u32 chans;
+
+ chans = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT) & SYS_REG_NUM_CH_MASK);
+
+ for (ch = 0; ch < chans; ch++) {
+ rank = 1 + (sys_reg >> SYS_REG_RANK_SHIFT(ch) &
+ SYS_REG_RANK_MASK);
+ col = 9 + (sys_reg >> SYS_REG_COL_SHIFT(ch) & SYS_REG_COL_MASK);
+ bk = 3 - ((sys_reg >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK);
+ cs0_row = 13 + (sys_reg >> SYS_REG_CS0_ROW_SHIFT(ch) &
+ SYS_REG_CS0_ROW_MASK);
+ cs1_row = 13 + (sys_reg >> SYS_REG_CS1_ROW_SHIFT(ch) &
+ SYS_REG_CS1_ROW_MASK);
+ bw = (2 >> ((sys_reg >> SYS_REG_BW_SHIFT(ch)) &
+ SYS_REG_BW_MASK));
+ row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) &
+ SYS_REG_ROW_3_4_MASK;
+ chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));
+
+ if (rank > 1)
+ chipsize_mb += chipsize_mb >>
+ (cs0_row - cs1_row);
+ if (row_3_4)
+ chipsize_mb = chipsize_mb * 3 / 4;
+ size_mb += chipsize_mb;
+ }
+
+ /* there can be no more than 2gb of memory */
+ size_mb = min(size_mb, 0x80000000 >> 20);
+
+ return size_mb;
+}
+
+static int rkclk_set_pll(struct rk3066_cru *cru, enum rk_clk_id clk_id,
+ const struct pll_div *div, bool has_bwadj)
+{
+ int pll_id = rk_pll_id(clk_id);
+ struct rk3066_pll *pll = &cru->pll[pll_id];
+ /* All PLLs have same VCO and output frequency range restrictions. */
+
+ /* enter reset */
+ rk_setreg(&pll->con3, 1 << PLL_RESET_SHIFT);
+
+ rk_clrsetreg(&pll->con0,
+ CLKR_MASK << CLKR_SHIFT | PLL_OD_MASK,
+ ((div->nr - 1) << CLKR_SHIFT) | (div->no - 1));
+ rk_clrsetreg(&pll->con1, CLKF_MASK, div->nf - 1);
+
+ if (has_bwadj)
+ rk_clrsetreg(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1);
+
+ udelay(10);
+
+ /* return from reset */
+ rk_clrreg(&pll->con3, 1 << PLL_RESET_SHIFT);
+
+ return 0;
+}
+
+static int rkclk_configure_ddr(struct rk3066_cru *cru, struct rk3066_grf *grf,
+ unsigned int hz, bool has_bwadj)
+{
+ static const struct pll_div dpll_cfg[] = {
+ {.nf = 25, .nr = 2, .no = 1},
+ {.nf = 400, .nr = 9, .no = 2},
+ {.nf = 500, .nr = 9, .no = 2},
+ {.nf = 100, .nr = 3, .no = 1},
+ };
+ int cfg;
+
+ switch (hz) {
+ case 300000000:
+ cfg = 0;
+ break;
+ case 533000000: /* actually 533.3P MHz */
+ cfg = 1;
+ break;
+ case 666000000: /* actually 666.6P MHz */
+ cfg = 2;
+ break;
+ case 800000000:
+ cfg = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* pll enter slow-mode */
+ rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+ DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
+
+ rkclk_set_pll(cru, CLK_DDR, &dpll_cfg[cfg], has_bwadj);
+
+ /* wait for pll lock */
+ while (!(readl(&grf->soc_status0) & SOCSTS_DPLL_LOCK))
+ udelay(1);
+
+ /* PLL enter normal-mode */
+ rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
+ DPLL_MODE_NORMAL << DPLL_MODE_SHIFT);
+
+ return 0;
+}
+
+void sdram_initialise(void)
+{
+ struct dram_info dram;
+ struct rk3066_sdram_params sdram_params = {
+ .pctl_timing = RK3066_PCTL_TIMING,
+ .phy_timing = RK3066_PHY_TIMING,
+ .base = RK3066_SDRAM_PARAMS
+ };
+ int channel = 0;
+ int zqcr;
+ int ret;
+
+ dram.cru = (void *)CRU_BASE;
+ dram.grf = (void *)GRF_BASE;
+ dram.pmu = (void *)PMU_BASE;
+ dram.chan[0].pctl = (void *)PCTL_BASE;
+ dram.chan[0].publ = (void *)PUBL_BASE;
+ dram.chan[0].msch = (void *)NOC_BASE;
+ dram.info.base = CONFIG_SYS_SDRAM_BASE;
+ dram.info.size = sdram_size_mb(dram.pmu) << 20;
+ sdram_params.num_channels = 1;
+
+ if ((sdram_params.base.dramtype == DDR3 &&
+ sdram_params.base.ddr_freq > 800000000)) {
+ return;
+ }
+
+ rkclk_configure_ddr(dram.cru, dram.grf, sdram_params.base.ddr_freq, 1);
+
+ const struct chan_info *chan = &dram.chan[channel];
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+ struct rk3288_ddr_publ *publ = chan->publ;
+
+ phy_pctrl_reset(dram.cru, publ, channel);
+ phy_dll_bypass_set(publ, sdram_params.base.ddr_freq);
+
+ dfi_cfg(pctl, sdram_params.base.dramtype);
+
+ pctl_cfg(channel, pctl, &sdram_params, dram.grf);
+
+ phy_cfg(chan, channel, &sdram_params);
+
+ phy_init(publ);
+
+ writel(POWER_UP_START, &pctl->powctl);
+ while (!(readl(&pctl->powstat) & POWER_UP_DONE))
+ ;
+
+ memory_init(publ, sdram_params.base.dramtype);
+ move_to_config_state(publ, pctl);
+
+ /* Using 32bit bus width for detect */
+ sdram_params.ch[channel].bw = 2;
+ set_bandwidth_ratio(chan, channel,
+ sdram_params.ch[channel].bw, dram.grf);
+ /*
+ * set cs, using n=3 for detect
+ * CS0, n=1
+ * CS1, n=2
+ * CS0 & CS1, n = 3
+ */
+ sdram_params.ch[channel].rank = 2,
+ clrsetbits_le32(&publ->pgcr, 0xF << 18,
+ (sdram_params.ch[channel].rank | 1) << 18);
+
+ /* DS=40ohm,ODT=155ohm */
+ zqcr = 1 << ZDEN_SHIFT | 2 << PU_ONDIE_SHIFT |
+ 2 << PD_ONDIE_SHIFT | 0x19 << PU_OUTPUT_SHIFT |
+ 0x19 << PD_OUTPUT_SHIFT;
+ writel(zqcr, &publ->zq1cr[0]);
+ writel(zqcr, &publ->zq0cr[0]);
+
+ /* Detect the rank and bit-width with data-training */
+ writel(1, &chan->msch->ddrconf);
+ sdram_rank_bw_detect(&dram, channel, &sdram_params);
+
+ if (sdram_params.base.dramtype == LPDDR3) {
+ u32 i;
+ writel(0, &pctl->mrrcfg0);
+ for (i = 0; i < 17; i++)
+ send_command_op(pctl, 1, MRR_CMD, i, 0);
+ }
+ writel(4, &chan->msch->ddrconf);
+ move_to_access_state(chan);
+ /* DDR3 and LPDDR3 are always 8 bank, no need detect */
+ sdram_params.ch[channel].bk = 3;
+ /* Detect Col and Row number*/
+ ret = sdram_col_row_detect(&dram, channel, &sdram_params);
+ if (ret)
+ goto error;
+
+ /* Find NIU DDR configuration */
+ ret = sdram_get_niu_config(&sdram_params);
+ if (ret)
+ goto error;
+
+ dram_all_config(&dram, &sdram_params);
+
+ return;
+error:
+ hang();
+}
+
--
2.7.4
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