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-rw-r--r--arch/arm/cpu/armv7/sunxi/Makefile1
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun8i_a83t.c424
2 files changed, 425 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/Makefile b/arch/arm/cpu/armv7/sunxi/Makefile
index d243b9e895..dfb0a3e3c0 100644
--- a/arch/arm/cpu/armv7/sunxi/Makefile
+++ b/arch/arm/cpu/armv7/sunxi/Makefile
@@ -54,6 +54,7 @@ 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-$(CONFIG_MACH_SUN8I_A83T) += dram_sun8i_a83t.o
obj-$(CONFIG_MACH_SUN8I_H3) += dram_sun8i_h3.o
obj-y += fel_utils.o
endif
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a83t.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a83t.c
new file mode 100644
index 0000000000..d757e403dc
--- /dev/null
+++ b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a83t.c
@@ -0,0 +1,424 @@
+/*
+ * Sun8i a33 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>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <errno.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/prcm.h>
+
+#define DRAM_CLK_MUL 2
+#define DRAM_CLK_DIV 1
+
+struct dram_para {
+ u8 cs1;
+ u8 seq;
+ u8 bank;
+ u8 rank;
+ u8 rows;
+ u8 bus_width;
+ u16 page_size;
+};
+
+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_CS1_CONTROL(para->cs1) | MCTL_CR_UNKNOWN |
+ MCTL_CR_CHANNEL(1) | MCTL_CR_DDR3 |
+ (para->seq ? MCTL_CR_SEQUENCE : 0) |
+ ((para->bus_width == 16) ? MCTL_CR_BUSW16 : MCTL_CR_BUSW8) |
+ MCTL_CR_PAGE_SIZE(para->page_size) | MCTL_CR_ROW(para->rows) |
+ MCTL_CR_BANK(para->bank) | MCTL_CR_RANK(para->rank),
+ &mctl_com->cr);
+}
+
+static void auto_detect_dram_size(struct dram_para *para)
+{
+ u8 orig_rank = para->rank;
+ int rows, columns;
+
+ /* Row detect */
+ para->page_size = 512;
+ para->seq = 1;
+ para->rows = 16;
+ para->rank = 1;
+ mctl_set_cr(para);
+ for (rows = 11 ; rows < 16 ; rows++) {
+ if (mctl_mem_matches(1 << (rows + 9))) /* row-column */
+ break;
+ }
+
+ /* Column (page size) detect */
+ para->rows = 11;
+ para->page_size = 8192;
+ mctl_set_cr(para);
+ for (columns = 9 ; columns < 13 ; columns++) {
+ if (mctl_mem_matches(1 << columns))
+ break;
+ }
+
+ para->seq = 0;
+ para->rank = orig_rank;
+ para->rows = rows;
+ para->page_size = 1 << columns;
+ mctl_set_cr(para);
+}
+
+static inline int ns_to_t(int nanoseconds)
+{
+ const unsigned int ctrl_freq =
+ CONFIG_DRAM_CLK * DRAM_CLK_MUL / DRAM_CLK_DIV;
+
+ return (ctrl_freq * nanoseconds + 999) / 1000;
+}
+
+static void auto_set_timing_para(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+ u32 reg_val;
+
+ 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);
+
+ /* Fixed timing parameters */
+ 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 work mode register */
+ mctl_set_cr(para);
+ /* Set mode register */
+ writel(MCTL_MR0, &mctl_ctl->mr0);
+ writel(MCTL_MR1, &mctl_ctl->mr1);
+ writel(MCTL_MR2, &mctl_ctl->mr2);
+ writel(MCTL_MR3, &mctl_ctl->mr3);
+ /* Set dram timing */
+ reg_val = (twtp << 24) | (tfaw << 16) | (trasmax << 8) | (tras << 0);
+ writel(reg_val, &mctl_ctl->dramtmg0);
+ reg_val = (txp << 16) | (trtp << 8) | (trc << 0);
+ writel(reg_val, &mctl_ctl->dramtmg1);
+ reg_val = (tcwl << 24) | (tcl << 16) | (trd2wr << 8) | (twr2rd << 0);
+ writel(reg_val, &mctl_ctl->dramtmg2);
+ reg_val = (tmrw << 16) | (tmrd << 12) | (tmod << 0);
+ writel(reg_val, &mctl_ctl->dramtmg3);
+ reg_val = (trcd << 24) | (tccd << 16) | (trrd << 8) | (trp << 0);
+ writel(reg_val, &mctl_ctl->dramtmg4);
+ reg_val = (tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | (tcke << 0);
+ writel(reg_val, &mctl_ctl->dramtmg5);
+ /* Set two rank timing and exit self-refresh timing */
+ reg_val = readl(&mctl_ctl->dramtmg8);
+ reg_val &= ~(0xff << 8);
+ reg_val &= ~(0xff << 0);
+ reg_val |= (0x33 << 8);
+ reg_val |= (0x8 << 0);
+ writel(reg_val, &mctl_ctl->dramtmg8);
+ /* Set phy interface time */
+ reg_val = (0x2 << 24) | (t_rdata_en << 16) | (0x1 << 8)
+ | (wr_latency << 0);
+ /* PHY interface write latency and read latency configure */
+ writel(reg_val, &mctl_ctl->pitmg0);
+ /* Set phy time PTR0-2 use default */
+ writel(((tdinit0 << 0) | (tdinit1 << 20)), &mctl_ctl->ptr3);
+ writel(((tdinit2 << 0) | (tdinit3 << 20)), &mctl_ctl->ptr4);
+ /* Set refresh timing */
+ reg_val = (trefi << 16) | (trfc << 0);
+ writel(reg_val, &mctl_ctl->rfshtmg);
+}
+
+static void mctl_set_pir(u32 val)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ writel(val, &mctl_ctl->pir);
+ mctl_await_completion(&mctl_ctl->pgsr0, 0x1, 0x1);
+}
+
+static void mctl_data_train_cfg(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ if (para->rank == 2)
+ clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x3 << 24);
+ else
+ clrsetbits_le32(&mctl_ctl->dtcr, 0x3 << 24, 0x1 << 24);
+}
+
+static int mctl_train_dram(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ mctl_data_train_cfg(para);
+ mctl_set_pir(0x5f3);
+
+ return ((readl(&mctl_ctl->pgsr0) >> 20) & 0xff) ? -EIO : 0;
+}
+
+static void set_master_priority(void)
+{
+ writel(0x00a0000d, MCTL_MASTER_CFG0(0));
+ writel(0x00500064, MCTL_MASTER_CFG1(0));
+ writel(0x07000009, MCTL_MASTER_CFG0(1));
+ writel(0x00000600, MCTL_MASTER_CFG1(1));
+ writel(0x01000009, MCTL_MASTER_CFG0(3));
+ writel(0x00000064, MCTL_MASTER_CFG1(3));
+ writel(0x08000009, MCTL_MASTER_CFG0(4));
+ writel(0x00000640, MCTL_MASTER_CFG1(4));
+ writel(0x20000308, MCTL_MASTER_CFG0(8));
+ writel(0x00001000, MCTL_MASTER_CFG1(8));
+ writel(0x02800009, MCTL_MASTER_CFG0(9));
+ writel(0x00000100, MCTL_MASTER_CFG1(9));
+ writel(0x01800009, MCTL_MASTER_CFG0(5));
+ writel(0x00000100, MCTL_MASTER_CFG1(5));
+ writel(0x01800009, MCTL_MASTER_CFG0(7));
+ writel(0x00000100, MCTL_MASTER_CFG1(7));
+ writel(0x00640009, MCTL_MASTER_CFG0(6));
+ writel(0x00000032, MCTL_MASTER_CFG1(6));
+ writel(0x0100000d, MCTL_MASTER_CFG0(2));
+ writel(0x00500080, MCTL_MASTER_CFG1(2));
+}
+
+static int mctl_channel_init(struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+ struct sunxi_mctl_com_reg * const mctl_com =
+ (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
+ u32 low_data_lines_status; /* Training status of datalines 0 - 7 */
+ u32 high_data_lines_status; /* Training status of datalines 8 - 15 */
+ u32 i, rval;
+
+ auto_set_timing_para(para);
+
+ /* Set dram master access priority */
+ writel(0x000101a0, &mctl_com->bwcr);
+ /* set cpu high priority */
+ writel(0x1, &mctl_com->mapr);
+ set_master_priority();
+ udelay(250);
+
+ /* Disable dram VTC */
+ clrbits_le32(&mctl_ctl->pgcr0, 0x3f << 0 | 0x1 << 30);
+ clrsetbits_le32(&mctl_ctl->pgcr1, 0x1 << 24, 0x1 << 26);
+
+ writel(0x94be6fa3, MCTL_PROTECT);
+ udelay(100);
+ clrsetbits_le32(MX_UPD2, 0xfff << 16, 0x50 << 26);
+ writel(0x0, MCTL_PROTECT);
+ udelay(100);
+
+
+ /* Set ODT */
+ if (IS_ENABLED(CONFIG_DRAM_ODT_EN))
+ rval = 0x0;
+ else
+ rval = 0x2;
+
+ for (i = 0 ; i < 11 ; i++) {
+ clrsetbits_le32(DATX0IOCR(i), (0x3 << 24) | (0x3 << 16),
+ rval << 24);
+ clrsetbits_le32(DATX1IOCR(i), (0x3 << 24) | (0x3 << 16),
+ rval << 24);
+ clrsetbits_le32(DATX2IOCR(i), (0x3 << 24) | (0x3 << 16),
+ rval << 24);
+ clrsetbits_le32(DATX3IOCR(i), (0x3 << 24) | (0x3 << 16),
+ rval << 24);
+ }
+
+ for (i = 0; i < 31; i++)
+ clrsetbits_le32(CAIOCR(i), 0x3 << 26 | 0x3 << 16, 0x2 << 26);
+
+ /* set PLL configuration */
+ if (CONFIG_DRAM_CLK >= 480)
+ setbits_le32(&mctl_ctl->pllgcr, 0x1 << 19);
+ else
+ setbits_le32(&mctl_ctl->pllgcr, 0x3 << 19);
+
+ /* Auto detect dram config, set 2 rank and 16bit bus-width */
+ para->cs1 = 0;
+ para->rank = 2;
+ para->bus_width = 16;
+ mctl_set_cr(para);
+
+ /* Open DQS gating */
+ clrbits_le32(&mctl_ctl->pgcr2, (0x3 << 6));
+ clrbits_le32(&mctl_ctl->dqsgmr, (0x1 << 8) | (0x7));
+
+ if (readl(&mctl_com->cr) & 0x1)
+ writel(0x00000303, &mctl_ctl->odtmap);
+ else
+ writel(0x00000201, &mctl_ctl->odtmap);
+
+ mctl_data_train_cfg(para);
+ /* ZQ calibration */
+ clrsetbits_le32(ZQnPR(0), 0x000000ff, CONFIG_DRAM_ZQ & 0xff);
+ clrsetbits_le32(ZQnPR(1), 0x000000ff, (CONFIG_DRAM_ZQ >> 8) & 0xff);
+ /* CA calibration */
+ mctl_set_pir(0x0201f3 | 0x1<<10);
+
+ /* DQS gate training */
+ if (mctl_train_dram(para) != 0) {
+ low_data_lines_status = (readl(DXnGSR0(0)) >> 24) & 0x03;
+ high_data_lines_status = (readl(DXnGSR0(1)) >> 24) & 0x03;
+
+ if (low_data_lines_status == 0x3)
+ return -EIO;
+
+ /* DRAM has only one rank */
+ para->rank = 1;
+ mctl_set_cr(para);
+
+ if (low_data_lines_status == high_data_lines_status)
+ goto done; /* 16 bit bus, 1 rank */
+
+ if (!(low_data_lines_status & high_data_lines_status)) {
+ /* Retry 16 bit bus-width with CS1 set */
+ para->cs1 = 1;
+ mctl_set_cr(para);
+ if (mctl_train_dram(para) == 0)
+ goto done;
+ }
+
+ /* Try 8 bit bus-width */
+ writel(0x0, DXnGCR0(1)); /* Disable high DQ */
+ para->cs1 = 0;
+ para->bus_width = 8;
+ mctl_set_cr(para);
+ if (mctl_train_dram(para) != 0)
+ return -EIO;
+ }
+done:
+ /* Check the dramc status */
+ mctl_await_completion(&mctl_ctl->statr, 0x1, 0x1);
+
+ /* Close DQS gating */
+ setbits_le32(&mctl_ctl->pgcr2, 0x3 << 6);
+
+ /* set PGCR3,CKE polarity */
+ writel(0x00aa0060, &mctl_ctl->pgcr3);
+ /* Enable master access */
+ writel(0xffffffff, &mctl_com->maer);
+
+ return 0;
+}
+
+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->mbus_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);
+ clrbits_le32(&ccm->dram_clk_cfg, 0x01<<31);
+
+ clock_set_pll5(CONFIG_DRAM_CLK * 1000000 * DRAM_CLK_MUL);
+
+ clrsetbits_le32(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_DIV_MASK,
+ CCM_DRAMCLK_CFG_DIV(DRAM_CLK_DIV) |
+ CCM_DRAMCLK_CFG_RST | CCM_DRAMCLK_CFG_UPD);
+ mctl_await_completion(&ccm->dram_clk_cfg, CCM_DRAMCLK_CFG_UPD, 0);
+
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << 14);
+ setbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_MCTL);
+ setbits_le32(&ccm->mbus_reset, CCM_MBUS_RESET_RESET);
+ setbits_le32(&ccm->mbus_clk_cfg, MBUS_CLK_GATE);
+
+ 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->mbus_clk_cfg, MBUS_CLK_GATE);
+
+ /* Set dram master access priority */
+ writel(0x0000e00f, &mctl_ctl->clken); /* normal */
+
+ udelay(250);
+}
+
+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 = {
+ .cs1 = 0,
+ .bank = 1,
+ .rank = 1,
+ .rows = 15,
+ .bus_width = 16,
+ .page_size = 2048,
+ };
+
+ setbits_le32(SUNXI_PRCM_BASE + 0x1e0, 0x1 << 8);
+
+ writel(0, (SUNXI_PRCM_BASE + 0x1e8));
+ udelay(10);
+
+ mctl_sys_init(&para);
+
+ if (mctl_channel_init(&para) != 0)
+ return 0;
+
+ auto_detect_dram_size(&para);
+
+ /* Enable master software clk */
+ writel(readl(&mctl_com->swonr) | 0x3ffff, &mctl_com->swonr);
+
+ /* Set DRAM ODT MAP */
+ if (para.rank == 2)
+ writel(0x00000303, &mctl_ctl->odtmap);
+ else
+ writel(0x00000201, &mctl_ctl->odtmap);
+
+ return para.page_size * (para.bus_width / 8) *
+ (1 << (para.bank + para.rank + para.rows));
+}
generated by cgit (git 2.34.1) at 2024-12-28 13:53:28 +0000