[PATCH v8 05/15] rockchip: rk3066: add sdram driver
Johan Jonker
jbx6244 at gmail.com
Tue Jan 18 01:36:53 CET 2022
From: Paweł Jarosz <paweljarosz3691 at gmail.com>
Add rockchip rk3066 sdram driver
Signed-off-by: Paweł Jarosz <paweljarosz3691 at gmail.com>
Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
---
Changed V7:
restyle
rename TEST_PATTERN
changed function prefix
changed #if where possible
restyle U_BOOT_DRIVER structure
remove rk3066_dmc_of_to_plat because dmc DT data
only used in TPL in combination with OF_PLATDATA
---
drivers/ram/rockchip/Makefile | 1 +
drivers/ram/rockchip/sdram_rk3066.c | 892 ++++++++++++++++++++++++++++
2 files changed, 893 insertions(+)
create mode 100644 drivers/ram/rockchip/sdram_rk3066.c
diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile
index ca1c289b..6d530c29 100644
--- a/drivers/ram/rockchip/Makefile
+++ b/drivers/ram/rockchip/Makefile
@@ -5,6 +5,7 @@
obj-$(CONFIG_ROCKCHIP_PX30) += sdram_px30.o sdram_pctl_px30.o sdram_phy_px30.o
obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o
+obj-$(CONFIG_ROCKCHIP_RK3066) = sdram_rk3066.o
obj-$(CONFIG_ROCKCHIP_RK3128) = sdram_rk3128.o
obj-$(CONFIG_ROCKCHIP_RK3188) = sdram_rk3188.o
obj-$(CONFIG_ROCKCHIP_RK322X) = sdram_rk322x.o
diff --git a/drivers/ram/rockchip/sdram_rk3066.c b/drivers/ram/rockchip/sdram_rk3066.c
new file mode 100644
index 00000000..832154ee
--- /dev/null
+++ b/drivers/ram/rockchip/sdram_rk3066.c
@@ -0,0 +1,892 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * (C) Copyright 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ *
+ * Adapted from the very similar rk3188 ddr init.
+ */
+
+#include <common.h>
+#include <clk.h>
+#include <dm.h>
+#include <dt-structs.h>
+#include <errno.h>
+#include <hang.h>
+#include <init.h>
+#include <log.h>
+#include <ram.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/cru_rk3066.h>
+#include <asm/arch-rockchip/ddr_rk3188.h>
+#include <asm/arch-rockchip/grf_rk3066.h>
+#include <asm/arch-rockchip/hardware.h>
+#include <asm/arch-rockchip/pmu_rk3188.h>
+#include <asm/arch-rockchip/sdram_rk3288.h>
+#include <asm/arch-rockchip/sdram.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+
+struct rk3066_dmc_chan_info {
+ struct rk3288_ddr_pctl *pctl;
+ struct rk3288_ddr_publ *publ;
+ struct rk3188_msch *msch;
+};
+
+struct rk3066_dmc_dram_info {
+ struct rk3066_dmc_chan_info chan[1];
+ struct ram_info info;
+ struct clk ddr_clk;
+ struct rk3066_cru *cru;
+ struct rk3066_grf *grf;
+ struct rk3066_sgrf *sgrf;
+ struct rk3188_pmu *pmu;
+};
+
+struct rk3066_dmc_sdram_params {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct dtd_rockchip_rk3066_dmc of_plat;
+#endif
+ 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 rk3066_dmc_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_PATTERN 0x5aa5f00f
+#define DQS_GATE_TRAINING_ERROR_RANK0 BIT(4)
+#define DQS_GATE_TRAINING_ERROR_RANK1 BIT(5)
+
+static void rk3066_dmc_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 rk3066_dmc_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 rk3066_dmc_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 rk3066_dmc_phy_pctrl_reset(struct rk3066_cru *cru,
+ struct rk3288_ddr_publ *publ,
+ int channel)
+{
+ int i;
+
+ rk3066_dmc_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);
+ rk3066_dmc_ddr_reset(cru, channel, 1, 0);
+ udelay(10);
+ rk3066_dmc_ddr_reset(cru, channel, 0, 0);
+ udelay(10);
+}
+
+static void rk3066_dmc_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 rk3066_dmc_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);
+ /* Write ODT length. */
+ writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1);
+ /* Disable phyupd and ctrlupd. */
+ writel(0, &pctl->dfiupdcfg);
+}
+
+static void rk3066_dmc_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 rk3066_dmc_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 rk3066_dmc_pctl_cfg(int channel, struct rk3288_ddr_pctl *pctl,
+ struct rk3066_dmc_sdram_params *sdram_params,
+ struct rk3066_grf *grf)
+{
+ rk3066_dmc_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);
+ rk3066_dmc_ddr_set_ddr3_mode(grf, channel, true);
+ break;
+ }
+
+ setbits_le32(&pctl->scfg, 1);
+}
+
+static void rk3066_dmc_phy_cfg(const struct rk3066_dmc_chan_info *chan, int channel,
+ struct rk3066_dmc_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);
+ /* Set DDR PHY timing. */
+ rk3066_dmc_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) {
+ /* Enable dynamic RTT. */
+ for (i = 0; i < 4; i++)
+ setbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+ } else {
+ /* Disable dynamic RTT. */
+ for (i = 0; i < 4; i++)
+ clrbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
+ }
+}
+
+static void rk3066_dmc_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 rk3066_dmc_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 rk3066_dmc_send_command_op(struct rk3288_ddr_pctl *pctl,
+ u32 rank, u32 cmd, u32 ma, u32 op)
+{
+ rk3066_dmc_send_command(pctl, rank, cmd, (ma & LPDDR2_MA_MASK) << LPDDR2_MA_SHIFT |
+ (op & LPDDR2_OP_MASK) << LPDDR2_OP_SHIFT);
+}
+
+static void rk3066_dmc_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 rk3066_dmc_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 we need to wakeup first
+ * and then enter the config.
+ */
+ 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 rk3066_dmc_set_bandwidth_ratio(const struct rk3066_dmc_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 rk3066_dmc_data_training(const struct rk3066_dmc_chan_info *chan, int channel,
+ struct rk3066_dmc_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++)
+ rk3066_dmc_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 rk3066_dmc_move_to_access_state(const struct rk3066_dmc_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 rk3066_dmc_dram_cfg_rbc(const struct rk3066_dmc_chan_info *chan, u32 chnum,
+ struct rk3066_dmc_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 rk3066_dmc_dram_all_config(const struct rk3066_dmc_dram_info *dram,
+ struct rk3066_dmc_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);
+
+ rk3066_dmc_dram_cfg_rbc(&dram->chan[chan], chan, sdram_params);
+ }
+ if (sdram_params->ch[0].rank == 2)
+ rk3066_dmc_ddr_rank_2_row15en(dram->grf, 0);
+ else
+ rk3066_dmc_ddr_rank_2_row15en(dram->grf, 1);
+
+ writel(sys_reg, &dram->pmu->sys_reg[2]);
+}
+
+static int rk3066_dmc_sdram_rank_bw_detect(struct rk3066_dmc_dram_info *dram, int channel,
+ struct rk3066_dmc_sdram_params *sdram_params)
+{
+ int reg;
+ int need_trainig = 0;
+ const struct rk3066_dmc_chan_info *chan = &dram->chan[channel];
+ struct rk3288_ddr_publ *publ = chan->publ;
+
+ rk3066_dmc_ddr_rank_2_row15en(dram->grf, 0);
+
+ if (rk3066_dmc_data_training(chan, channel, sdram_params) < 0) {
+ debug("first data training fail!\n");
+ reg = readl(&publ->datx8[0].dxgsr[0]);
+ /* Check the result for rank 0. */
+ if (channel == 0 && (reg & DQS_GATE_TRAINING_ERROR_RANK0)) {
+ debug("data training fail!\n");
+ 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;
+ rk3066_dmc_set_bandwidth_ratio(chan, channel,
+ sdram_params->ch[channel].bw,
+ dram->grf);
+ need_trainig = 1;
+ }
+ }
+ /* Assume that the die bit width is equel to the chip bit width. */
+ sdram_params->ch[channel].dbw = sdram_params->ch[channel].bw;
+
+ if (need_trainig &&
+ (rk3066_dmc_data_training(chan, channel, sdram_params) < 0)) {
+ if (sdram_params->base.dramtype == LPDDR3) {
+ rk3066_dmc_ddr_phy_ctl_reset(dram->cru, channel, 1);
+ udelay(10);
+ rk3066_dmc_ddr_phy_ctl_reset(dram->cru, channel, 0);
+ udelay(10);
+ }
+ debug("2nd data training failed!");
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int rk3066_dmc_sdram_col_row_detect(struct rk3066_dmc_dram_info *dram, int channel,
+ struct rk3066_dmc_sdram_params *sdram_params)
+{
+ int row, col;
+ unsigned int addr;
+ const struct rk3066_dmc_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_PATTERN, addr);
+ if ((readl(addr) == TEST_PATTERN) &&
+ (readl(CONFIG_SYS_SDRAM_BASE) == 0))
+ break;
+ }
+ if (col == 8) {
+ debug("Col detect error\n");
+ ret = -EINVAL;
+ goto out;
+ } else {
+ sdram_params->ch[channel].col = col;
+ }
+
+ rk3066_dmc_ddr_rank_2_row15en(dram->grf, 1);
+ rk3066_dmc_move_to_config_state(publ, pctl);
+ writel(1, &chan->msch->ddrconf);
+ rk3066_dmc_move_to_access_state(chan);
+ /* Detect row, max 15, min13 for rk3066 */
+ for (row = 16; row >= 13; row--) {
+ writel(0, CONFIG_SYS_SDRAM_BASE);
+ addr = CONFIG_SYS_SDRAM_BASE + (1 << (row + 15 - 1));
+ writel(TEST_PATTERN, addr);
+ if ((readl(addr) == TEST_PATTERN) &&
+ (readl(CONFIG_SYS_SDRAM_BASE) == 0))
+ break;
+ }
+ if (row == 12) {
+ debug("Row detect error\n");
+ ret = -EINVAL;
+ } else {
+ sdram_params->ch[channel].cs1_row = row;
+ sdram_params->ch[channel].row_3_4 = 0;
+ debug("chn %d col %d, row %d\n", channel, col, row);
+ sdram_params->ch[channel].cs0_row = row;
+ }
+
+out:
+ return ret;
+}
+
+static int rk3066_dmc_sdram_get_niu_config(struct rk3066_dmc_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 = ARRAY_SIZE(rk3066_dmc_ddrconf_table) / sizeof(rk3066_dmc_ddrconf_table[0]);
+ for (i = 0; i < size; i++)
+ if (tmp == rk3066_dmc_ddrconf_table[i])
+ break;
+ if (i >= size) {
+ debug("niu config not found\n");
+ ret = -EINVAL;
+ } else {
+ debug("niu config %d\n", i);
+ sdram_params->base.ddrconfig = i;
+ }
+
+ return ret;
+}
+
+static int rk3066_dmc_sdram_init(struct rk3066_dmc_dram_info *dram,
+ struct rk3066_dmc_sdram_params *sdram_params)
+{
+ int channel;
+ int zqcr;
+ int ret;
+
+ if ((sdram_params->base.dramtype == DDR3 &&
+ sdram_params->base.ddr_freq > 800000000)) {
+ debug("SDRAM frequency is too high!");
+ return -E2BIG;
+ }
+
+ ret = clk_set_rate(&dram->ddr_clk, sdram_params->base.ddr_freq);
+ if (ret) {
+ debug("Could not set DDR clock\n");
+ return ret;
+ }
+
+ for (channel = 0; channel < 1; channel++) {
+ const struct rk3066_dmc_chan_info *chan = &dram->chan[channel];
+ struct rk3288_ddr_pctl *pctl = chan->pctl;
+ struct rk3288_ddr_publ *publ = chan->publ;
+
+ rk3066_dmc_phy_pctrl_reset(dram->cru, publ, channel);
+ rk3066_dmc_phy_dll_bypass_set(publ, sdram_params->base.ddr_freq);
+
+ rk3066_dmc_dfi_cfg(pctl, sdram_params->base.dramtype);
+
+ rk3066_dmc_pctl_cfg(channel, pctl, sdram_params, dram->grf);
+
+ rk3066_dmc_phy_cfg(chan, channel, sdram_params);
+
+ rk3066_dmc_phy_init(publ);
+
+ writel(POWER_UP_START, &pctl->powctl);
+ while (!(readl(&pctl->powstat) & POWER_UP_DONE))
+ ;
+
+ rk3066_dmc_memory_init(publ, sdram_params->base.dramtype);
+ rk3066_dmc_move_to_config_state(publ, pctl);
+
+ /* Use 32bit bus width for detection. */
+ sdram_params->ch[channel].bw = 2;
+ rk3066_dmc_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);
+ rk3066_dmc_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++)
+ rk3066_dmc_send_command_op(pctl, 1, MRR_CMD, i, 0);
+ }
+ writel(4, &chan->msch->ddrconf);
+ rk3066_dmc_move_to_access_state(chan);
+ /* DDR3 and LPDDR3 are always 8 bank, no need to detect. */
+ sdram_params->ch[channel].bk = 3;
+ /* Detect Col and Row number. */
+ ret = rk3066_dmc_sdram_col_row_detect(dram, channel, sdram_params);
+ if (ret)
+ goto error;
+ }
+ /* Find NIU DDR configuration. */
+ ret = rk3066_dmc_sdram_get_niu_config(sdram_params);
+ if (ret)
+ goto error;
+
+ rk3066_dmc_dram_all_config(dram, sdram_params);
+ debug("SDRAM init OK!\n");
+
+ return 0;
+error:
+ debug("SDRAM init failed!\n");
+ hang();
+}
+
+static int rk3066_dmc_setup_sdram(struct udevice *dev)
+{
+ struct rk3066_dmc_dram_info *priv = dev_get_priv(dev);
+ struct rk3066_dmc_sdram_params *params = dev_get_plat(dev);
+
+ return rk3066_dmc_sdram_init(priv, params);
+}
+
+static int rk3066_dmc_conv_of_plat(struct udevice *dev)
+{
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct rk3066_dmc_sdram_params *plat = dev_get_plat(dev);
+ struct dtd_rockchip_rk3066_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));
+ /* RK3066 supports dual-channel, set default channel num to 2. */
+ plat->num_channels = 1;
+ ret = regmap_init_mem_plat(dev, of_plat->reg,
+ ARRAY_SIZE(of_plat->reg) / 2, &plat->map);
+ if (ret)
+ return ret;
+
+ return 0;
+#else
+ return -EINVAL;
+#endif
+}
+
+static int rk3066_dmc_probe(struct udevice *dev)
+{
+ struct rk3066_dmc_dram_info *priv = dev_get_priv(dev);
+
+ priv->pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU);
+
+ if (IS_ENABLED(CONFIG_TPL_BUILD)) {
+ struct rk3066_dmc_sdram_params *plat = dev_get_plat(dev);
+ struct regmap *map;
+ struct udevice *dev_clk;
+ int ret;
+
+ ret = rk3066_dmc_conv_of_plat(dev);
+ if (ret)
+ return ret;
+
+ map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_NOC);
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+ priv->chan[0].msch = regmap_get_range(map, 0);
+ priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+ priv->chan[0].pctl = regmap_get_range(plat->map, 0);
+ priv->chan[0].publ = 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 = rk3066_dmc_setup_sdram(dev);
+ if (ret)
+ return ret;
+ } else {
+ priv->info.base = CONFIG_SYS_SDRAM_BASE;
+ priv->info.size = rockchip_sdram_size((phys_addr_t)&priv->pmu->sys_reg[2]);
+ }
+
+ return 0;
+}
+
+static int rk3066_dmc_get_info(struct udevice *dev, struct ram_info *info)
+{
+ struct rk3066_dmc_dram_info *priv = dev_get_priv(dev);
+
+ *info = priv->info;
+
+ return 0;
+}
+
+static struct ram_ops rk3066_dmc_ops = {
+ .get_info = rk3066_dmc_get_info,
+};
+
+static const struct udevice_id rk3066_dmc_ids[] = {
+ { .compatible = "rockchip,rk3066-dmc" },
+ { }
+};
+
+U_BOOT_DRIVER(rockchip_rk3066_dmc) = {
+ .name = "rockchip_rk3066_dmc",
+ .id = UCLASS_RAM,
+ .ops = &rk3066_dmc_ops,
+ .probe = rk3066_dmc_probe,
+ .of_match = rk3066_dmc_ids,
+ .priv_auto = sizeof(struct rk3066_dmc_dram_info),
+#if IS_ENABLED(CONFIG_TPL_BUILD)
+ .plat_auto = sizeof(struct rk3066_dmc_sdram_params),
+#endif
+};
--
2.20.1
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