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-rw-r--r--arch/arm/cpu/armv7/sunxi/Makefile1
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun8i_h3.c469
2 files changed, 470 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile
index 459d5d8b0c..33c76ef59d 100644
--- a/arch/arm/cpu/armv7/sunxi/Makefile
+++ b/arch/arm/cpu/armv7/sunxi/Makefile
@@ -49,5 +49,6 @@ obj-$(CONFIG_MACH_SUN6I) += dram_sun6i.o
obj-$(CONFIG_MACH_SUN7I) += dram_sun4i.o
obj-$(CONFIG_MACH_SUN8I_A23) += dram_sun8i_a23.o
obj-$(CONFIG_MACH_SUN8I_A33) += dram_sun8i_a33.o
+obj-$(CONFIG_MACH_SUN8I_H3) += dram_sun8i_h3.o
obj-y += fel_utils.o
endif
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i_h3.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i_h3.c
new file mode 100644
index 0000000000..b721d6011a
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/dram_sun8i_h3.c
@@ -0,0 +1,469 @@
+/*
+ * sun8i H3 platform dram controller init
+ *
+ * (C) Copyright 2007-2015 Allwinner Technology Co.
+ * Jerry Wang <wangflord@allwinnertech.com>
+ * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com>
+ * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com>
+ * (C) Copyright 2015 Jens Kuske <jenskuske@gmail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/dram.h>
+#include <linux/kconfig.h>
+
+struct dram_para {
+ u32 read_delays;
+ u32 write_delays;
+ u16 page_size;
+ u8 bus_width;
+ u8 dual_rank;
+ u8 row_bits;
+};
+
+static inline int ns_to_t(int nanoseconds)
+{
+ const unsigned int ctrl_freq = CONFIG_DRAM_CLK / 2;
+
+ return DIV_ROUND_UP(ctrl_freq * nanoseconds, 1000);
+}
+
+static u32 bin_to_mgray(int val)
+{
+ static const u8 lookup_table[32] = {
+ 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05,
+ 0x0c, 0x0d, 0x0e, 0x0f, 0x0a, 0x0b, 0x08, 0x09,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1e, 0x1f, 0x1c, 0x1d,
+ 0x14, 0x15, 0x16, 0x17, 0x12, 0x13, 0x10, 0x11,
+ };
+
+ return lookup_table[clamp(val, 0, 31)];
+}
+
+static int mgray_to_bin(u32 val)
+{
+ static const u8 lookup_table[32] = {
+ 0x00, 0x01, 0x02, 0x03, 0x06, 0x07, 0x04, 0x05,
+ 0x0e, 0x0f, 0x0c, 0x0d, 0x08, 0x09, 0x0a, 0x0b,
+ 0x1e, 0x1f, 0x1c, 0x1d, 0x18, 0x19, 0x1a, 0x1b,
+ 0x10, 0x11, 0x12, 0x13, 0x16, 0x17, 0x14, 0x15,
+ };
+
+ return lookup_table[val & 0x1f];
+}
+
+static void mctl_phy_init(u32 val)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ writel(val | PIR_INIT, &mctl_ctl->pir);
+ mctl_await_completion(&mctl_ctl->pgsr[0], PGSR_INIT_DONE, 0x1);
+}
+
+static void mctl_dq_delay(u32 read, u32 write)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+ int i, j;
+ u32 val;
+
+ for (i = 0; i < 4; i++) {
+ val = DATX_IOCR_WRITE_DELAY((write >> (i * 4)) & 0xf) |
+ DATX_IOCR_READ_DELAY((read >> (i * 4)) & 0xf);
+
+ for (j = DATX_IOCR_DQ(0); j <= DATX_IOCR_DM; j++)
+ setbits_le32(&mctl_ctl->datx[i].iocr[j], val);
+ }
+
+ clrbits_le32(&mctl_ctl->pgcr[0], 1 << 26);
+
+ for (i = 0; i < 4; i++) {
+ val = DATX_IOCR_WRITE_DELAY((write >> (16 + i * 4)) & 0xf) |
+ DATX_IOCR_READ_DELAY((read >> (16 + i * 4)) & 0xf);
+
+ setbits_le32(&mctl_ctl->datx[i].iocr[DATX_IOCR_DQS], val);
+ setbits_le32(&mctl_ctl->datx[i].iocr[DATX_IOCR_DQSN], val);
+ }
+
+ setbits_le32(&mctl_ctl->pgcr[0], 1 << 26);
+
+ udelay(1);
+}
+
+static void mctl_set_master_priority(void)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+
+ /* enable bandwidth limit windows and set windows size 1us */
+ writel(0x00010190, &mctl_com->bwcr);
+
+ /* set cpu high priority */
+ writel(0x00000001, &mctl_com->mapr);
+
+ writel(0x0200000d, &mctl_com->mcr[0][0]);
+ writel(0x00800100, &mctl_com->mcr[0][1]);
+ writel(0x06000009, &mctl_com->mcr[1][0]);
+ writel(0x01000400, &mctl_com->mcr[1][1]);
+ writel(0x0200000d, &mctl_com->mcr[2][0]);
+ writel(0x00600100, &mctl_com->mcr[2][1]);
+ writel(0x0100000d, &mctl_com->mcr[3][0]);
+ writel(0x00200080, &mctl_com->mcr[3][1]);
+ writel(0x07000009, &mctl_com->mcr[4][0]);
+ writel(0x01000640, &mctl_com->mcr[4][1]);
+ writel(0x0100000d, &mctl_com->mcr[5][0]);
+ writel(0x00200080, &mctl_com->mcr[5][1]);
+ writel(0x01000009, &mctl_com->mcr[6][0]);
+ writel(0x00400080, &mctl_com->mcr[6][1]);
+ writel(0x0100000d, &mctl_com->mcr[7][0]);
+ writel(0x00400080, &mctl_com->mcr[7][1]);
+ writel(0x0100000d, &mctl_com->mcr[8][0]);
+ writel(0x00400080, &mctl_com->mcr[8][1]);
+ writel(0x04000009, &mctl_com->mcr[9][0]);
+ writel(0x00400100, &mctl_com->mcr[9][1]);
+ writel(0x2000030d, &mctl_com->mcr[10][0]);
+ writel(0x04001800, &mctl_com->mcr[10][1]);
+ writel(0x04000009, &mctl_com->mcr[11][0]);
+ writel(0x00400120, &mctl_com->mcr[11][1]);
+}
+
+static void mctl_set_timing_params(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ u8 tccd = 2;
+ u8 tfaw = ns_to_t(50);
+ u8 trrd = max(ns_to_t(10), 4);
+ u8 trcd = ns_to_t(15);
+ u8 trc = ns_to_t(53);
+ u8 txp = max(ns_to_t(8), 3);
+ u8 twtr = max(ns_to_t(8), 4);
+ u8 trtp = max(ns_to_t(8), 4);
+ u8 twr = max(ns_to_t(15), 3);
+ u8 trp = ns_to_t(15);
+ u8 tras = ns_to_t(38);
+ u16 trefi = ns_to_t(7800) / 32;
+ u16 trfc = ns_to_t(350);
+
+ u8 tmrw = 0;
+ u8 tmrd = 4;
+ u8 tmod = 12;
+ u8 tcke = 3;
+ u8 tcksrx = 5;
+ u8 tcksre = 5;
+ u8 tckesr = 4;
+ u8 trasmax = 24;
+
+ u8 tcl = 6; /* CL 12 */
+ u8 tcwl = 4; /* CWL 8 */
+ u8 t_rdata_en = 4;
+ u8 wr_latency = 2;
+
+ u32 tdinit0 = (500 * CONFIG_DRAM_CLK) + 1; /* 500us */
+ u32 tdinit1 = (360 * CONFIG_DRAM_CLK) / 1000 + 1; /* 360ns */
+ u32 tdinit2 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */
+ u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */
+
+ u8 twtp = tcwl + 2 + twr; /* WL + BL / 2 + tWR */
+ u8 twr2rd = tcwl + 2 + twtr; /* WL + BL / 2 + tWTR */
+ u8 trd2wr = tcl + 2 + 1 - tcwl; /* RL + BL / 2 + 2 - WL */
+
+ /* set mode register */
+ writel(0x1c70, &mctl_ctl->mr[0]); /* CL=11, WR=12 */
+ writel(0x40, &mctl_ctl->mr[1]);
+ writel(0x18, &mctl_ctl->mr[2]); /* CWL=8 */
+ writel(0x0, &mctl_ctl->mr[3]);
+
+ /* set DRAM timing */
+ writel(DRAMTMG0_TWTP(twtp) | DRAMTMG0_TFAW(tfaw) |
+ DRAMTMG0_TRAS_MAX(trasmax) | DRAMTMG0_TRAS(tras),
+ &mctl_ctl->dramtmg[0]);
+ writel(DRAMTMG1_TXP(txp) | DRAMTMG1_TRTP(trtp) | DRAMTMG1_TRC(trc),
+ &mctl_ctl->dramtmg[1]);
+ writel(DRAMTMG2_TCWL(tcwl) | DRAMTMG2_TCL(tcl) |
+ DRAMTMG2_TRD2WR(trd2wr) | DRAMTMG2_TWR2RD(twr2rd),
+ &mctl_ctl->dramtmg[2]);
+ writel(DRAMTMG3_TMRW(tmrw) | DRAMTMG3_TMRD(tmrd) | DRAMTMG3_TMOD(tmod),
+ &mctl_ctl->dramtmg[3]);
+ writel(DRAMTMG4_TRCD(trcd) | DRAMTMG4_TCCD(tccd) | DRAMTMG4_TRRD(trrd) |
+ DRAMTMG4_TRP(trp), &mctl_ctl->dramtmg[4]);
+ writel(DRAMTMG5_TCKSRX(tcksrx) | DRAMTMG5_TCKSRE(tcksre) |
+ DRAMTMG5_TCKESR(tckesr) | DRAMTMG5_TCKE(tcke),
+ &mctl_ctl->dramtmg[5]);
+
+ /* set two rank timing */
+ clrsetbits_le32(&mctl_ctl->dramtmg[8], (0xff << 8) | (0xff << 0),
+ (0x66 << 8) | (0x10 << 0));
+
+ /* set PHY interface timing, write latency and read latency configure */
+ writel((0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8) |
+ (wr_latency << 0), &mctl_ctl->pitmg[0]);
+
+ /* set PHY timing, PTR0-2 use default */
+ writel(PTR3_TDINIT0(tdinit0) | PTR3_TDINIT1(tdinit1), &mctl_ctl->ptr[3]);
+ writel(PTR4_TDINIT2(tdinit2) | PTR4_TDINIT3(tdinit3), &mctl_ctl->ptr[4]);
+
+ /* set refresh timing */
+ writel(RFSHTMG_TREFI(trefi) | RFSHTMG_TRFC(trfc), &mctl_ctl->rfshtmg);
+}
+
+static void mctl_zq_calibration(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ int i;
+ u16 zq_val[6];
+ u8 val;
+
+ writel(0x0a0a0a0a, &mctl_ctl->zqdr[2]);
+
+ for (i = 0; i < 6; i++) {
+ u8 zq = (CONFIG_DRAM_ZQ >> (i * 4)) & 0xf;
+
+ writel((zq << 20) | (zq << 16) | (zq << 12) |
+ (zq << 8) | (zq << 4) | (zq << 0),
+ &mctl_ctl->zqcr);
+
+ writel(PIR_CLRSR, &mctl_ctl->pir);
+ mctl_phy_init(PIR_ZCAL);
+
+ zq_val[i] = readl(&mctl_ctl->zqdr[0]) & 0xff;
+ writel(REPEAT_BYTE(zq_val[i]), &mctl_ctl->zqdr[2]);
+
+ writel(PIR_CLRSR, &mctl_ctl->pir);
+ mctl_phy_init(PIR_ZCAL);
+
+ val = readl(&mctl_ctl->zqdr[0]) >> 24;
+ zq_val[i] |= bin_to_mgray(mgray_to_bin(val) - 1) << 8;
+ }
+
+ writel((zq_val[1] << 16) | zq_val[0], &mctl_ctl->zqdr[0]);
+ writel((zq_val[3] << 16) | zq_val[2], &mctl_ctl->zqdr[1]);
+ writel((zq_val[5] << 16) | zq_val[4], &mctl_ctl->zqdr[2]);
+}
+
+static void mctl_set_cr(struct dram_para *para)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+
+ writel(MCTL_CR_BL8 | MCTL_CR_2T | MCTL_CR_DDR3 | MCTL_CR_INTERLEAVED |
+ MCTL_CR_EIGHT_BANKS | MCTL_CR_BUS_WIDTH(para->bus_width) |
+ (para->dual_rank ? MCTL_CR_DUAL_RANK : MCTL_CR_SINGLE_RANK) |
+ MCTL_CR_PAGE_SIZE(para->page_size) |
+ MCTL_CR_ROW_BITS(para->row_bits), &mctl_com->cr);
+}
+
+static void mctl_sys_init(struct dram_para *para)
+{
+ struct sunxi_ccm_reg * const ccm =
+ (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ clrbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE);
+ clrbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET);
+ clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL);
+ clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL);
+ clrbits_le32(&ccm->pll5_cfg, CCM_PLL5_CTRL_EN);
+ udelay(10);
+
+ clrbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST);
+ udelay(1000);
+
+ clock_set_pll5(CONFIG_DRAM_CLK * 2 * 1000000, false);
+ clrsetbits_le32(&ccm->dram_clk_cfg,
+ CCM_DRAMCLK_CFG_DIV_MASK | CCM_DRAMCLK_CFG_SRC_MASK,
+ CCM_DRAMCLK_CFG_DIV(1) | CCM_DRAMCLK_CFG_SRC_PLL5 |
+ CCM_DRAMCLK_CFG_UPD);
+ mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0);
+
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_RESET_OFFSET_MCTL);
+ setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL);
+ setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET);
+ setbits_le32(&ccm->mbus0_clk_cfg, MBUS_CLK_GATE);
+
+ setbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_RST);
+ udelay(10);
+
+ writel(0xc00e, &mctl_ctl->clken);
+ udelay(500);
+}
+
+static int mctl_channel_init(struct dram_para *para)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ unsigned int i;
+
+ mctl_set_cr(para);
+ mctl_set_timing_params(para);
+ mctl_set_master_priority();
+
+ /* setting VTC, default disable all VT */
+ clrbits_le32(&mctl_ctl->pgcr[0], (1 << 30) | 0x3f);
+ clrsetbits_le32(&mctl_ctl->pgcr[1], 1 << 24, 1 << 26);
+
+ /* increase DFI_PHY_UPD clock */
+ writel(PROTECT_MAGIC, &mctl_com->protect);
+ udelay(100);
+ clrsetbits_le32(&mctl_ctl->upd2, 0xfff << 16, 0x50 << 16);
+ writel(0x0, &mctl_com->protect);
+ udelay(100);
+
+ /* set dramc odt */
+ for (i = 0; i < 4; i++)
+ clrsetbits_le32(&mctl_ctl->datx[i].gcr, (0x3 << 4) |
+ (0x1 << 1) | (0x3 << 2) | (0x3 << 12) |
+ (0x3 << 14),
+ IS_ENABLED(CONFIG_DRAM_ODT_EN) ? 0x0 : 0x2);
+
+ /* AC PDR should always ON */
+ setbits_le32(&mctl_ctl->aciocr, 0x1 << 1);
+
+ /* set DQS auto gating PD mode */
+ setbits_le32(&mctl_ctl->pgcr[2], 0x3 << 6);
+
+ /* dx ddr_clk & hdr_clk dynamic mode */
+ clrbits_le32(&mctl_ctl->pgcr[0], (0x3 << 14) | (0x3 << 12));
+
+ /* dphy & aphy phase select 270 degree */
+ clrsetbits_le32(&mctl_ctl->pgcr[2], (0x3 << 10) | (0x3 << 8),
+ (0x1 << 10) | (0x2 << 8));
+
+ /* set half DQ */
+ if (para->bus_width != 32) {
+ writel(0x0, &mctl_ctl->datx[2].gcr);
+ writel(0x0, &mctl_ctl->datx[3].gcr);
+ }
+
+ /* data training configuration */
+ clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24,
+ (para->dual_rank ? 0x3 : 0x1) << 24);
+
+
+ if (para->read_delays || para->write_delays) {
+ mctl_dq_delay(para->read_delays, para->write_delays);
+ udelay(50);
+ }
+
+ mctl_zq_calibration(para);
+
+ mctl_phy_init(PIR_PLLINIT | PIR_DCAL | PIR_PHYRST | PIR_DRAMRST |
+ PIR_DRAMINIT | PIR_QSGATE);
+
+ /* detect ranks and bus width */
+ if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20)) {
+ /* only one rank */
+ if (((readl(&mctl_ctl->datx[0].gsr[0]) >> 24) & 0x2) ||
+ ((readl(&mctl_ctl->datx[1].gsr[0]) >> 24) & 0x2)) {
+ clrsetbits_le32(&mctl_ctl->dtcr, 0xf << 24, 0x1 << 24);
+ para->dual_rank = 0;
+ }
+
+ /* only half DQ width */
+ if (((readl(&mctl_ctl->datx[2].gsr[0]) >> 24) & 0x1) ||
+ ((readl(&mctl_ctl->datx[3].gsr[0]) >> 24) & 0x1)) {
+ writel(0x0, &mctl_ctl->datx[2].gcr);
+ writel(0x0, &mctl_ctl->datx[3].gcr);
+ para->bus_width = 16;
+ }
+
+ mctl_set_cr(para);
+ udelay(20);
+
+ /* re-train */
+ mctl_phy_init(PIR_QSGATE);
+ if (readl(&mctl_ctl->pgsr[0]) & (0xfe << 20))
+ return 1;
+ }
+
+ /* check the dramc status */
+ mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1);
+
+ /* liuke added for refresh debug */
+ setbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31);
+ udelay(10);
+ clrbits_le32(&mctl_ctl->rfshctl0, 0x1 << 31);
+ udelay(10);
+
+ /* set PGCR3, CKE polarity */
+ writel(0x00aa0060, &mctl_ctl->pgcr[3]);
+
+ /* power down zq calibration module for power save */
+ setbits_le32(&mctl_ctl->zqcr, ZQCR_PWRDOWN);
+
+ /* enable master access */
+ writel(0xffffffff, &mctl_com->maer);
+
+ return 0;
+}
+
+static void mctl_auto_detect_dram_size(struct dram_para *para)
+{
+ /* detect row address bits */
+ para->page_size = 512;
+ para->row_bits = 16;
+ mctl_set_cr(para);
+
+ for (para->row_bits = 11; para->row_bits < 16; para->row_bits++)
+ if (mctl_mem_matches((1 << (para->row_bits + 3)) * para->page_size))
+ break;
+
+ /* detect page size */
+ para->page_size = 8192;
+ mctl_set_cr(para);
+
+ for (para->page_size = 512; para->page_size < 8192; para->page_size *= 2)
+ if (mctl_mem_matches(para->page_size))
+ break;
+}
+
+unsigned long sunxi_dram_init(void)
+{
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ struct dram_para para = {
+ .read_delays = 0x00007979,
+ .write_delays = 0x6aaa0000,
+ .dual_rank = 0,
+ .bus_width = 32,
+ .row_bits = 15,
+ .page_size = 4096,
+ };
+
+ mctl_sys_init(&para);
+ if (mctl_channel_init(&para))
+ return 0;
+
+ if (para.dual_rank)
+ writel(0x00000303, &mctl_ctl->odtmap);
+ else
+ writel(0x00000201, &mctl_ctl->odtmap);
+ udelay(1);
+
+ /* odt delay */
+ writel(0x0c000400, &mctl_ctl->odtcfg);
+
+ /* clear credit value */
+ setbits_le32(&mctl_com->cccr, 1 << 31);
+ udelay(10);
+
+ mctl_auto_detect_dram_size(&para);
+ mctl_set_cr(&para);
+
+ return (1 << (para.row_bits + 3)) * para.page_size *
+ (para.dual_rank ? 2 : 1);
+}
generated by cgit (git 2.34.1) at 2024-12-26 12:53:35 +0000