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Diffstat (limited to 'arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c')
-rw-r--r--arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c362
1 files changed, 0 insertions, 362 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c
deleted file mode 100644
index fa1620cb39..0000000000
--- a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c
+++ /dev/null
@@ -1,362 +0,0 @@
-/*
- * 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>
-
-/* PLL runs at 2x dram-clk, controller runs at PLL / 4 (dram-clk / 2) */
-#define DRAM_CLK_MUL 2
-#define DRAM_CLK_DIV 4
-#define DRAM_SIGMA_DELTA_ENABLE 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 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 */
-
- auto_set_timing_para(para);
-
- /* Disable dram VTC */
- clrbits_le32(&mctl_ctl->pgcr0, 0x3f << 0);
-
- /* Set ODT */
- if ((CONFIG_DRAM_CLK > 400) && IS_ENABLED(CONFIG_DRAM_ODT_EN)) {
- setbits_le32(DXnGCR0(0), 0x3 << 9);
- setbits_le32(DXnGCR0(1), 0x3 << 9);
- } else {
- clrbits_le32(DXnGCR0(0), 0x3 << 9);
- clrbits_le32(DXnGCR0(1), 0x3 << 9);
- }
-
- /* set PLL configuration */
- if (CONFIG_DRAM_CLK >= 480)
- setbits_le32(&mctl_ctl->pllgcr, 0x1 << 18);
- else
- setbits_le32(&mctl_ctl->pllgcr, 0x3 << 18);
-
- /* 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));
-
- mctl_data_train_cfg(para);
-
- /* ZQ calibration */
- writel(CONFIG_DRAM_ZQ & 0xff, &mctl_ctl->zqcr1);
- /* CA calibration */
- mctl_set_pir(0x00000003);
- /* More ZQ calibration */
- writel(readl(&mctl_ctl->zqsr0) | 0x10000000, &mctl_ctl->zqcr2);
- writel((CONFIG_DRAM_ZQ >> 8) & 0xff, &mctl_ctl->zqcr1);
-
- /* 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);
-
- /* 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;
- struct sunxi_mctl_com_reg * const mctl_com =
- (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
-
- clrsetbits_le32(&ccm->dram_pll_cfg, CCM_DRAMPLL_CFG_SRC_MASK,
- CCM_DRAMPLL_CFG_SRC_PLL11);
-
- clock_set_pll11(CONFIG_DRAM_CLK * 1000000 * DRAM_CLK_MUL,
- DRAM_SIGMA_DELTA_ENABLE);
-
- 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 << 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);
-
- /* Set dram master access priority */
- writel(0x0, &mctl_com->mapr);
- writel(0x0f802f01, &mctl_ctl->sched);
- writel(0x0000400f, &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,
- };
-
- 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 2025-01-19 22:15:55 +0000