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-rw-r--r--arch/arm/mach-sunxi/Kconfig19
-rw-r--r--arch/arm/mach-sunxi/Makefile1
-rw-r--r--arch/arm/mach-sunxi/dram_sun50i_h6.c251
-rw-r--r--arch/arm/mach-sunxi/dram_timings/Makefile2
-rw-r--r--arch/arm/mach-sunxi/dram_timings/h6_ddr3_1333.c144
-rw-r--r--arch/arm/mach-sunxi/dram_timings/h6_lpddr3.c132
6 files changed, 371 insertions, 178 deletions
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 1669e62a6d..ffdf09f29e 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -300,6 +300,7 @@ config MACH_SUN50I_H6
select ARM64
select SUPPORT_SPL
select FIT
+ select PHY_SUN4I_USB
select SPL_LOAD_FIT
select DRAM_SUN50I_H6
@@ -340,7 +341,7 @@ config ARM_BOOT_HOOK_RMR
This allows both the SPL and the U-Boot proper to be entered in
either mode and switch to AArch64 if needed.
-if SUNXI_DRAM_DW
+if SUNXI_DRAM_DW || DRAM_SUN50I_H6
config SUNXI_DRAM_DDR3
bool
@@ -370,6 +371,22 @@ config SUNXI_DRAM_LPDDR3_STOCK
This option is the LPDDR3 timing used by the stock boot0 by
Allwinner.
+config SUNXI_DRAM_H6_LPDDR3
+ bool "LPDDR3 DRAM chips on the H6 DRAM controller"
+ select SUNXI_DRAM_LPDDR3
+ depends on DRAM_SUN50I_H6
+ ---help---
+ This option is the LPDDR3 timing used by the stock boot0 by
+ Allwinner.
+
+config SUNXI_DRAM_H6_DDR3_1333
+ bool "DDR3-1333 boot0 timings on the H6 DRAM controller"
+ select SUNXI_DRAM_DDR3
+ depends on DRAM_SUN50I_H6
+ ---help---
+ This option is the DDR3 timing used by the boot0 on H6 TV boxes
+ which use a DDR3-1333 timing.
+
config SUNXI_DRAM_DDR2_V3S
bool "DDR2 found in V3s chip"
select SUNXI_DRAM_DDR2
diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile
index 43a93e3085..d129f33479 100644
--- a/arch/arm/mach-sunxi/Makefile
+++ b/arch/arm/mach-sunxi/Makefile
@@ -39,4 +39,5 @@ obj-$(CONFIG_SPL_SPI_SUNXI) += spl_spi_sunxi.o
obj-$(CONFIG_SUNXI_DRAM_DW) += dram_sunxi_dw.o
obj-$(CONFIG_SUNXI_DRAM_DW) += dram_timings/
obj-$(CONFIG_DRAM_SUN50I_H6) += dram_sun50i_h6.o
+obj-$(CONFIG_DRAM_SUN50I_H6) += dram_timings/
endif
diff --git a/arch/arm/mach-sunxi/dram_sun50i_h6.c b/arch/arm/mach-sunxi/dram_sun50i_h6.c
index 5da90a2835..2a8275da3a 100644
--- a/arch/arm/mach-sunxi/dram_sun50i_h6.c
+++ b/arch/arm/mach-sunxi/dram_sun50i_h6.c
@@ -32,33 +32,8 @@
* similar PHY is ZynqMP.
*/
-/*
- * The delay parameters below allow to allegedly specify delay times of some
- * unknown unit for each individual bit trace in each of the four data bytes
- * the 32-bit wide access consists of. Also three control signals can be
- * adjusted individually.
- */
-#define NR_OF_BYTE_LANES (32 / BITS_PER_BYTE)
-/* The eight data lines (DQn) plus DM, DQS, DQS/DM/DQ Output Enable and DQSN */
-#define WR_LINES_PER_BYTE_LANE (BITS_PER_BYTE + 4)
-/*
- * The eight data lines (DQn) plus DM, DQS, DQS/DM/DQ Output Enable, DQSN,
- * Termination and Power down
- */
-#define RD_LINES_PER_BYTE_LANE (BITS_PER_BYTE + 6)
-struct dram_para {
- u32 clk;
- enum sunxi_dram_type type;
- u8 cols;
- u8 rows;
- u8 ranks;
- const u8 dx_read_delays[NR_OF_BYTE_LANES][RD_LINES_PER_BYTE_LANE];
- const u8 dx_write_delays[NR_OF_BYTE_LANES][WR_LINES_PER_BYTE_LANE];
-};
-
static void mctl_sys_init(struct dram_para *para);
static void mctl_com_init(struct dram_para *para);
-static void mctl_set_timing_lpddr3(struct dram_para *para);
static void mctl_channel_init(struct dram_para *para);
static void mctl_core_init(struct dram_para *para)
@@ -67,7 +42,8 @@ static void mctl_core_init(struct dram_para *para)
mctl_com_init(para);
switch (para->type) {
case SUNXI_DRAM_TYPE_LPDDR3:
- mctl_set_timing_lpddr3(para);
+ case SUNXI_DRAM_TYPE_DDR3:
+ mctl_set_timing_params(para);
break;
default:
panic("Unsupported DRAM type!");
@@ -75,12 +51,14 @@ static void mctl_core_init(struct dram_para *para)
mctl_channel_init(para);
}
+/* PHY initialisation */
static void mctl_phy_pir_init(u32 val)
{
struct sunxi_mctl_phy_reg * const mctl_phy =
(struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE;
- writel(val | BIT(0), &mctl_phy->pir);
+ writel(val, &mctl_phy->pir);
+ writel(val | BIT(0), &mctl_phy->pir); /* Start initialisation. */
mctl_await_completion(&mctl_phy->pgsr[0], BIT(0), BIT(0));
}
@@ -169,125 +147,6 @@ static void mctl_set_master_priority(void)
MBUS_CONF(HDCP2, true, HIGH, 2, 100, 64, 32);
}
-static u32 mr_lpddr3[12] = {
- 0x00000000, 0x00000043, 0x0000001a, 0x00000001,
- 0x00000000, 0x00000000, 0x00000048, 0x00000000,
- 0x00000000, 0x00000000, 0x00000000, 0x00000003,
-};
-
-/* TODO: flexible timing */
-static void mctl_set_timing_lpddr3(struct dram_para *para)
-{
- struct sunxi_mctl_ctl_reg * const mctl_ctl =
- (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
- struct sunxi_mctl_phy_reg * const mctl_phy =
- (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE;
-
- u8 tccd = 2;
- u8 tfaw = max(ns_to_t(50), 4);
- u8 trrd = max(ns_to_t(10), 2);
- u8 trcd = max(ns_to_t(24), 2);
- u8 trc = ns_to_t(70);
- u8 txp = max(ns_to_t(8), 2);
- u8 twtr = max(ns_to_t(8), 2);
- u8 trtp = max(ns_to_t(8), 2);
- u8 twr = max(ns_to_t(15), 2);
- u8 trp = ns_to_t(18);
- u8 tras = ns_to_t(42);
- u8 twtr_sa = ns_to_t(5);
- u8 tcksrea = ns_to_t(11);
- u16 trefi = ns_to_t(3900) / 32;
- u16 trfc = ns_to_t(210);
- u16 txsr = ns_to_t(220);
-
- if (CONFIG_DRAM_CLK % 400 == 0) {
- /* Round up these parameters */
- twtr_sa++;
- tcksrea++;
- }
-
- u8 tmrw = 5;
- u8 tmrd = 5;
- u8 tmod = 12;
- u8 tcke = 3;
- u8 tcksrx = 5;
- u8 tcksre = 5;
- u8 tckesr = 5;
- u8 trasmax = CONFIG_DRAM_CLK / 60;
- u8 txs = 4;
- u8 txsdll = 4;
- u8 txsabort = 4;
- u8 txsfast = 4;
-
- u8 tcl = 5; /* CL 10 */
- u8 tcwl = 3; /* CWL 6 */
- u8 t_rdata_en = twtr_sa + 8;
-
- u32 tdinit0 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */
- u32 tdinit1 = (100 * CONFIG_DRAM_CLK) / 1000 + 1; /* 100ns */
- u32 tdinit2 = (11 * CONFIG_DRAM_CLK) + 1; /* 11us */
- u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */
-
- u8 twtp = tcwl + 4 + twr + 1;
- /*
- * The code below for twr2rd and trd2wr follows the IP core's
- * document from ZynqMP and i.MX7. The BSP has both number
- * substracted by 2.
- */
- u8 twr2rd = tcwl + 4 + 1 + twtr;
- u8 trd2wr = tcl + 4 + (tcksrea >> 1) - tcwl + 1;
-
- /* set mode register */
- memcpy(mctl_phy->mr, mr_lpddr3, sizeof(mr_lpddr3));
-
- /* set DRAM timing */
- writel((twtp << 24) | (tfaw << 16) | (trasmax << 8) | tras,
- &mctl_ctl->dramtmg[0]);
- writel((txp << 16) | (trtp << 8) | trc, &mctl_ctl->dramtmg[1]);
- writel((tcwl << 24) | (tcl << 16) | (trd2wr << 8) | twr2rd,
- &mctl_ctl->dramtmg[2]);
- writel((tmrw << 20) | (tmrd << 12) | tmod, &mctl_ctl->dramtmg[3]);
- writel((trcd << 24) | (tccd << 16) | (trrd << 8) | trp,
- &mctl_ctl->dramtmg[4]);
- writel((tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | tcke,
- &mctl_ctl->dramtmg[5]);
- /* Value suggested by ZynqMP manual and used by libdram */
- writel((txp + 2) | 0x02020000, &mctl_ctl->dramtmg[6]);
- writel((txsfast << 24) | (txsabort << 16) | (txsdll << 8) | txs,
- &mctl_ctl->dramtmg[8]);
- writel(txsr, &mctl_ctl->dramtmg[14]);
-
- clrsetbits_le32(&mctl_ctl->init[0], (3 << 30), (1 << 30));
- writel(0, &mctl_ctl->dfimisc);
- clrsetbits_le32(&mctl_ctl->rankctl, 0xff0, 0x660);
-
- /*
- * Set timing registers of the PHY.
- * Note: the PHY is clocked 2x from the DRAM frequency.
- */
- writel((trrd << 25) | (tras << 17) | (trp << 9) | (trtp << 1),
- &mctl_phy->dtpr[0]);
- writel((tfaw << 17) | 0x28000400 | (tmrd << 1), &mctl_phy->dtpr[1]);
- writel(((txs << 6) - 1) | (tcke << 17), &mctl_phy->dtpr[2]);
- writel(((txsdll << 22) - (0x1 << 16)) | twtr_sa | (tcksrea << 8),
- &mctl_phy->dtpr[3]);
- writel((txp << 1) | (trfc << 17) | 0x800, &mctl_phy->dtpr[4]);
- writel((trc << 17) | (trcd << 9) | (twtr << 1), &mctl_phy->dtpr[5]);
- writel(0x0505, &mctl_phy->dtpr[6]);
-
- /* Configure DFI timing */
- writel(tcl | 0x2000200 | (t_rdata_en << 16) | 0x808000,
- &mctl_ctl->dfitmg0);
- writel(0x040201, &mctl_ctl->dfitmg1);
-
- /* Configure PHY timing */
- writel(tdinit0 | (tdinit1 << 20), &mctl_phy->ptr[3]);
- writel(tdinit2 | (tdinit3 << 18), &mctl_phy->ptr[4]);
-
- /* set refresh timing */
- writel((trefi << 16) | trfc, &mctl_ctl->rfshtmg);
-}
-
static void mctl_sys_init(struct dram_para *para)
{
struct sunxi_ccm_reg * const ccm =
@@ -426,14 +285,11 @@ static void mctl_com_init(struct dram_para *para)
mctl_set_addrmap(para);
setbits_le32(&mctl_com->cr, BIT(31));
- /*
- * This address is magic; it's in SID memory area, but there's no
- * known definition of it.
- * On my Pine H64 board it has content 7.
- */
- if (readl(0x03006100) == 7)
+
+ /* The bonding ID seems to be always 7. */
+ if (readl(SUNXI_SIDC_BASE + 0x100) == 7) /* bonding ID */
clrbits_le32(&mctl_com->cr, BIT(27));
- else if (readl(0x03006100) == 3)
+ else if (readl(SUNXI_SIDC_BASE + 0x100) == 3)
setbits_le32(&mctl_com->cr, BIT(27));
if (para->clk > 408)
@@ -444,22 +300,37 @@ static void mctl_com_init(struct dram_para *para)
reg_val = 0x3f00;
clrsetbits_le32(&mctl_com->unk_0x008, 0x3f00, reg_val);
- /* TODO: half DQ, non-LPDDR3 types */
- writel(MSTR_DEVICETYPE_LPDDR3 | MSTR_BUSWIDTH_FULL |
- MSTR_BURST_LENGTH(8) | MSTR_ACTIVE_RANKS(para->ranks) |
- 0x80000000, &mctl_ctl->mstr);
- writel(DCR_LPDDR3 | DCR_DDR8BANK | 0x400, &mctl_phy->dcr);
+ /* TODO: half DQ, DDR4 */
+ reg_val = MSTR_BUSWIDTH_FULL | MSTR_BURST_LENGTH(8) |
+ MSTR_ACTIVE_RANKS(para->ranks);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ reg_val |= MSTR_DEVICETYPE_LPDDR3;
+ if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ reg_val |= MSTR_DEVICETYPE_DDR3 | MSTR_2TMODE;
+ writel(reg_val | BIT(31), &mctl_ctl->mstr);
+
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ reg_val = DCR_LPDDR3 | DCR_DDR8BANK;
+ if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ reg_val = DCR_DDR3 | DCR_DDR8BANK | DCR_DDR2T;
+ writel(reg_val | 0x400, &mctl_phy->dcr);
if (para->ranks == 2)
writel(0x0303, &mctl_ctl->odtmap);
else
writel(0x0201, &mctl_ctl->odtmap);
- /* TODO: non-LPDDR3 types */
- tmp = para->clk * 7 / 2000;
- reg_val = 0x0400;
- reg_val |= (tmp + 7) << 24;
- reg_val |= (((para->clk < 400) ? 3 : 4) - tmp) << 16;
+ /* TODO: DDR4 */
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR3) {
+ tmp = para->clk * 7 / 2000;
+ reg_val = 0x0400;
+ reg_val |= (tmp + 7) << 24;
+ reg_val |= (((para->clk < 400) ? 3 : 4) - tmp) << 16;
+ } else if (para->type == SUNXI_DRAM_TYPE_DDR3) {
+ reg_val = 0x06000400; /* TODO?: Use CL - CWL value in [7:0] */
+ } else {
+ panic("Only (LP)DDR3 supported (type = %d)\n", para->type);
+ }
writel(reg_val, &mctl_ctl->odtcfg);
/* TODO: half DQ */
@@ -514,6 +385,9 @@ static void mctl_bit_delay_set(struct dram_para *para)
setbits_le32(&mctl_phy->pgcr[0], BIT(26));
udelay(1);
+ if (para->type != SUNXI_DRAM_TYPE_LPDDR3)
+ return;
+
for (i = 1; i < 14; i++) {
val = readl(&mctl_phy->acbdlr[i]);
val += 0x0a0a0a0a;
@@ -561,7 +435,8 @@ static void mctl_channel_init(struct dram_para *para)
else
clrsetbits_le32(&mctl_phy->dtcr[1], 0x30000, 0x10000);
- clrbits_le32(&mctl_phy->dtcr[1], BIT(1));
+ if (sunxi_dram_is_lpddr(para->type))
+ clrbits_le32(&mctl_phy->dtcr[1], BIT(1));
if (para->ranks == 2) {
writel(0x00010001, &mctl_phy->rankidr);
writel(0x20000, &mctl_phy->odtcr);
@@ -570,8 +445,11 @@ static void mctl_channel_init(struct dram_para *para)
writel(0x10000, &mctl_phy->odtcr);
}
- /* TODO: non-LPDDR3 types */
- clrsetbits_le32(&mctl_phy->dtcr[0], 0xF0000000, 0x10000040);
+ /* set bits [3:0] to 1? 0 not valid in ZynqMP d/s */
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ clrsetbits_le32(&mctl_phy->dtcr[0], 0xF0000000, 0x10000040);
+ else
+ clrsetbits_le32(&mctl_phy->dtcr[0], 0xF0000000, 0x10000000);
if (para->clk <= 792) {
if (para->clk <= 672) {
if (para->clk <= 600)
@@ -601,12 +479,13 @@ static void mctl_channel_init(struct dram_para *para)
writel(0x06060606, &mctl_phy->acbdlr[i]);
}
- /* TODO: non-LPDDR3 types */
- mctl_phy_pir_init(PIR_ZCAL | PIR_DCAL | PIR_PHYRST | PIR_DRAMINIT |
- PIR_QSGATE | PIR_RDDSKW | PIR_WRDSKW | PIR_RDEYE |
- PIR_WREYE);
+ val = PIR_ZCAL | PIR_DCAL | PIR_PHYRST | PIR_DRAMINIT | PIR_QSGATE |
+ PIR_RDDSKW | PIR_WRDSKW | PIR_RDEYE | PIR_WREYE;
+ if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ val |= PIR_DRAMRST | PIR_WL;
+ mctl_phy_pir_init(val);
- /* TODO: non-LPDDR3 types */
+ /* TODO: DDR4 types ? */
for (i = 0; i < 4; i++)
writel(0x00000909, &mctl_phy->dx[i].gcr[5]);
@@ -662,7 +541,8 @@ static void mctl_channel_init(struct dram_para *para)
panic("Error while initializing DRAM PHY!\n");
}
- clrsetbits_le32(&mctl_phy->dsgcr, 0xc0, 0x40);
+ if (sunxi_dram_is_lpddr(para->type))
+ clrsetbits_le32(&mctl_phy->dsgcr, 0xc0, 0x40);
clrbits_le32(&mctl_phy->pgcr[1], 0x40);
clrbits_le32(&mctl_ctl->dfimisc, BIT(0));
writel(1, &mctl_ctl->swctl);
@@ -714,29 +594,46 @@ unsigned long mctl_calc_size(struct dram_para *para)
return (1ULL << (para->cols + para->rows + 3)) * 4 * para->ranks;
}
-#define SUN50I_H6_DX_WRITE_DELAYS \
+#define SUN50I_H6_LPDDR3_DX_WRITE_DELAYS \
{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
-#define SUN50I_H6_DX_READ_DELAYS \
+#define SUN50I_H6_LPDDR3_DX_READ_DELAYS \
{{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }}
+#define SUN50I_H6_DDR3_DX_WRITE_DELAYS \
+ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
+#define SUN50I_H6_DDR3_DX_READ_DELAYS \
+ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
+
unsigned long sunxi_dram_init(void)
{
struct sunxi_mctl_com_reg * const mctl_com =
(struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE;
struct dram_para para = {
.clk = CONFIG_DRAM_CLK,
- .type = SUNXI_DRAM_TYPE_LPDDR3,
.ranks = 2,
.cols = 11,
.rows = 14,
- .dx_read_delays = SUN50I_H6_DX_READ_DELAYS,
- .dx_write_delays = SUN50I_H6_DX_WRITE_DELAYS,
+#ifdef CONFIG_SUNXI_DRAM_H6_LPDDR3
+ .type = SUNXI_DRAM_TYPE_LPDDR3,
+ .dx_read_delays = SUN50I_H6_LPDDR3_DX_READ_DELAYS,
+ .dx_write_delays = SUN50I_H6_LPDDR3_DX_WRITE_DELAYS,
+#elif defined(CONFIG_SUNXI_DRAM_H6_DDR3_1333)
+ .type = SUNXI_DRAM_TYPE_DDR3,
+ .dx_read_delays = SUN50I_H6_DDR3_DX_READ_DELAYS,
+ .dx_write_delays = SUN50I_H6_DDR3_DX_WRITE_DELAYS,
+#endif
};
unsigned long size;
diff --git a/arch/arm/mach-sunxi/dram_timings/Makefile b/arch/arm/mach-sunxi/dram_timings/Makefile
index 278a8a14cc..0deb9911fd 100644
--- a/arch/arm/mach-sunxi/dram_timings/Makefile
+++ b/arch/arm/mach-sunxi/dram_timings/Makefile
@@ -1,3 +1,5 @@
obj-$(CONFIG_SUNXI_DRAM_DDR3_1333) += ddr3_1333.o
obj-$(CONFIG_SUNXI_DRAM_LPDDR3_STOCK) += lpddr3_stock.o
obj-$(CONFIG_SUNXI_DRAM_DDR2_V3S) += ddr2_v3s.o
+obj-$(CONFIG_SUNXI_DRAM_H6_LPDDR3) += h6_lpddr3.o
+obj-$(CONFIG_SUNXI_DRAM_H6_DDR3_1333) += h6_ddr3_1333.o
diff --git a/arch/arm/mach-sunxi/dram_timings/h6_ddr3_1333.c b/arch/arm/mach-sunxi/dram_timings/h6_ddr3_1333.c
new file mode 100644
index 0000000000..611eaa3024
--- /dev/null
+++ b/arch/arm/mach-sunxi/dram_timings/h6_ddr3_1333.c
@@ -0,0 +1,144 @@
+/*
+ * sun50i H6 DDR3-1333 timings, as programmed by Allwinner's boot0
+ * for some TV boxes with the H6 and DDR3 memory.
+ *
+ * The chips are probably able to be driven by a faster clock, but boot0
+ * uses a more conservative timing (as usual).
+ *
+ * (C) Copyright 2018,2019 Arm Ltd.
+ * based on previous work by:
+ * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * References used:
+ * - JEDEC DDR3 SDRAM standard: JESD79-3F.pdf
+ * - Samsung K4B2G0446D datasheet
+ * - ZynqMP UG1087 register DDRC/PHY documentation
+ *
+ * Many thanks to Jernej Skrabec for contributing some fixes!
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/cpu.h>
+
+/*
+ * Only the first four are used for DDR3(?)
+ * MR0: BL8, seq. read burst, no test, fast exit (DLL on), no DLL reset,
+ * CAS latency (CL): 11, write recovery (WR): 12
+ * MR1: DLL enabled, output strength RZQ/6, Rtt_norm RZQ/2,
+ * write levelling disabled, TDQS disabled, output buffer enabled
+ * MR2: manual full array self refresh, dynamic ODT off,
+ * CAS write latency (CWL): 8
+ */
+static u32 mr_ddr3[7] = {
+ 0x00001c70, 0x00000040, 0x00000018, 0x00000000,
+ 0x00000000, 0x00000400, 0x00000848,
+};
+
+/* TODO: flexible timing */
+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;
+ struct sunxi_mctl_phy_reg * const mctl_phy =
+ (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE;
+ int i;
+
+ u8 tccd = 2; /* JEDEC: 4nCK */
+ u8 tfaw = ns_to_t(50); /* JEDEC: 30 ns w/ 1K pages */
+ u8 trrd = max(ns_to_t(6), 4); /* JEDEC: max(6 ns, 4nCK) */
+ u8 trcd = ns_to_t(15); /* JEDEC: 13.5 ns */
+ u8 trc = ns_to_t(53); /* JEDEC: 49.5 ns */
+ u8 txp = max(ns_to_t(6), 3); /* JEDEC: max(6 ns, 3nCK) */
+ u8 twtr = max(ns_to_t(8), 2); /* JEDEC: max(7.5 ns, 4nCK) */
+ u8 trtp = max(ns_to_t(8), 2); /* JEDEC: max(7.5 ns, 4nCK) */
+ u8 twr = ns_to_t(15); /* JEDEC: 15 ns */
+ u8 trp = ns_to_t(15); /* JEDEC: >= 13.75 ns */
+ u8 tras = ns_to_t(38); /* JEDEC >= 36 ns, <= 9*trefi */
+ u8 twtr_sa = 2; /* ? */
+ u8 tcksrea = 4; /* ? */
+ u16 trefi = ns_to_t(7800) / 32; /* JEDEC: 7.8us@Tcase <= 85C */
+ u16 trfc = ns_to_t(350); /* JEDEC: 160 ns for 2Gb */
+ u16 txsr = 4; /* ? */
+
+ u8 tmrw = 0; /* ? */
+ u8 tmrd = 4; /* JEDEC: 4nCK */
+ u8 tmod = max(ns_to_t(15), 12); /* JEDEC: max(15 ns, 12nCK) */
+ u8 tcke = max(ns_to_t(6), 3); /* JEDEC: max(5.625 ns, 3nCK) */
+ u8 tcksrx = max(ns_to_t(10), 5); /* JEDEC: max(10 ns, 5nCK) */
+ u8 tcksre = max(ns_to_t(10), 5); /* JEDEC: max(10 ns, 5nCK) */
+ u8 tckesr = tcke + 1; /* JEDEC: tCKE(min) + 1nCK */
+ u8 trasmax = 24; /* JEDEC: tREFI * 9 */
+ u8 txs = ns_to_t(360) / 32; /* JEDEC: max(5nCK,tRFC+10ns) */
+ u8 txsdll = 4; /* JEDEC: 512 nCK */
+ u8 txsabort = 4; /* ? */
+ u8 txsfast = 4; /* ? */
+ u8 tcl = 6; /* JEDEC: CL / 2 => 6 */
+ u8 tcwl = 4; /* JEDEC: 8 */
+ u8 t_rdata_en = 7; /* ? */
+
+ u32 tdinit0 = (500 * CONFIG_DRAM_CLK) + 1; /* 500us */
+ u32 tdinit1 = (360 * CONFIG_DRAM_CLK) / 1000 + 1;
+ u32 tdinit2 = (200 * CONFIG_DRAM_CLK) + 1;
+ u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */
+
+ u8 twtp = tcwl + 2 + twr; /* (WL + BL / 2 + tWR) / 2 */
+ u8 twr2rd = tcwl + 2 + twtr; /* (WL + BL / 2 + tWTR) / 2 */
+ u8 trd2wr = 5; /* (RL + BL / 2 + 2 - WL) / 2 */
+
+ if (tcl + 1 >= trtp + trp)
+ trtp = tcl + 2 - trp;
+
+ /* set mode registers */
+ for (i = 0; i < ARRAY_SIZE(mr_ddr3); i++)
+ writel(mr_ddr3[i], &mctl_phy->mr[i]);
+
+ /* set DRAM timing */
+ writel((twtp << 24) | (tfaw << 16) | (trasmax << 8) | tras,
+ &mctl_ctl->dramtmg[0]);
+ writel((txp << 16) | (trtp << 8) | trc, &mctl_ctl->dramtmg[1]);
+ writel((tcwl << 24) | (tcl << 16) | (trd2wr << 8) | twr2rd,
+ &mctl_ctl->dramtmg[2]);
+ writel((tmrw << 20) | (tmrd << 12) | tmod, &mctl_ctl->dramtmg[3]);
+ writel((trcd << 24) | (tccd << 16) | (trrd << 8) | trp,
+ &mctl_ctl->dramtmg[4]);
+ writel((tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | tcke,
+ &mctl_ctl->dramtmg[5]);
+ /* Value suggested by ZynqMP manual and used by libdram */
+ writel((txp + 2) | 0x02020000, &mctl_ctl->dramtmg[6]);
+ writel((txsfast << 24) | (txsabort << 16) | (txsdll << 8) | txs,
+ &mctl_ctl->dramtmg[8]);
+ writel(txsr, &mctl_ctl->dramtmg[14]);
+
+ clrsetbits_le32(&mctl_ctl->init[0], (3 << 30), (1 << 30));
+ writel(0, &mctl_ctl->dfimisc);
+ clrsetbits_le32(&mctl_ctl->rankctl, 0xff0, 0x660);
+
+ /*
+ * Set timing registers of the PHY.
+ * Note: the PHY is clocked 2x from the DRAM frequency.
+ */
+ writel((trrd << 25) | (tras << 17) | (trp << 9) | (trtp << 1),
+ &mctl_phy->dtpr[0]);
+ writel((tfaw << 17) | 0x28000400 | (tmrd << 1), &mctl_phy->dtpr[1]);
+ writel(((txs << 6) - 1) | (tcke << 17), &mctl_phy->dtpr[2]);
+ writel(((txsdll << 22) - (0x1 << 16)) | twtr_sa | (tcksrea << 8),
+ &mctl_phy->dtpr[3]);
+ writel((txp << 1) | (trfc << 17) | 0x800, &mctl_phy->dtpr[4]);
+ writel((trc << 17) | (trcd << 9) | (twtr << 1), &mctl_phy->dtpr[5]);
+ writel(0x0505, &mctl_phy->dtpr[6]);
+
+ /* Configure DFI timing */
+ writel(tcl | 0x2000200 | (t_rdata_en << 16) | 0x808000,
+ &mctl_ctl->dfitmg0);
+ writel(0x040201, &mctl_ctl->dfitmg1);
+
+ /* Configure PHY timing. Zynq uses different registers. */
+ writel(tdinit0 | (tdinit1 << 20), &mctl_phy->ptr[3]);
+ writel(tdinit2 | (tdinit3 << 18), &mctl_phy->ptr[4]);
+
+ /* set refresh timing */
+ writel((trefi << 16) | trfc, &mctl_ctl->rfshtmg);
+}
diff --git a/arch/arm/mach-sunxi/dram_timings/h6_lpddr3.c b/arch/arm/mach-sunxi/dram_timings/h6_lpddr3.c
new file mode 100644
index 0000000000..1000860113
--- /dev/null
+++ b/arch/arm/mach-sunxi/dram_timings/h6_lpddr3.c
@@ -0,0 +1,132 @@
+/*
+ * sun50i H6 LPDDR3 timings
+ *
+ * (C) Copyright 2017 Icenowy Zheng <icenowy@aosc.io>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/cpu.h>
+
+static u32 mr_lpddr3[12] = {
+ 0x00000000, 0x00000043, 0x0000001a, 0x00000001,
+ 0x00000000, 0x00000000, 0x00000048, 0x00000000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000003,
+};
+
+/* TODO: flexible timing */
+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;
+ struct sunxi_mctl_phy_reg * const mctl_phy =
+ (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE;
+ int i;
+
+ u8 tccd = 2;
+ u8 tfaw = max(ns_to_t(50), 4);
+ u8 trrd = max(ns_to_t(10), 2);
+ u8 trcd = max(ns_to_t(24), 2);
+ u8 trc = ns_to_t(70);
+ u8 txp = max(ns_to_t(8), 2);
+ u8 twtr = max(ns_to_t(8), 2);
+ u8 trtp = max(ns_to_t(8), 2);
+ u8 twr = max(ns_to_t(15), 2);
+ u8 trp = ns_to_t(18);
+ u8 tras = ns_to_t(42);
+ u8 twtr_sa = ns_to_t(5);
+ u8 tcksrea = ns_to_t(11);
+ u16 trefi = ns_to_t(3900) / 32;
+ u16 trfc = ns_to_t(210);
+ u16 txsr = ns_to_t(220);
+
+ if (CONFIG_DRAM_CLK % 400 == 0) {
+ /* Round up these parameters */
+ twtr_sa++;
+ tcksrea++;
+ }
+
+ u8 tmrw = 5;
+ u8 tmrd = 5;
+ u8 tmod = 12;
+ u8 tcke = 3;
+ u8 tcksrx = 5;
+ u8 tcksre = 5;
+ u8 tckesr = 5;
+ u8 trasmax = CONFIG_DRAM_CLK / 60;
+ u8 txs = 4;
+ u8 txsdll = 4;
+ u8 txsabort = 4;
+ u8 txsfast = 4;
+
+ u8 tcl = 5; /* CL 10 */
+ u8 tcwl = 3; /* CWL 6 */
+ u8 t_rdata_en = twtr_sa + 8;
+
+ u32 tdinit0 = (200 * CONFIG_DRAM_CLK) + 1; /* 200us */
+ u32 tdinit1 = (100 * CONFIG_DRAM_CLK) / 1000 + 1; /* 100ns */
+ u32 tdinit2 = (11 * CONFIG_DRAM_CLK) + 1; /* 11us */
+ u32 tdinit3 = (1 * CONFIG_DRAM_CLK) + 1; /* 1us */
+
+ u8 twtp = tcwl + 4 + twr + 1;
+ /*
+ * The code below for twr2rd and trd2wr follows the IP core's
+ * document from ZynqMP and i.MX7. The BSP has both number
+ * substracted by 2.
+ */
+ u8 twr2rd = tcwl + 4 + 1 + twtr;
+ u8 trd2wr = tcl + 4 + (tcksrea >> 1) - tcwl + 1;
+
+ /* set mode registers */
+ for (i = 0; i < ARRAY_SIZE(mr_lpddr3); i++)
+ writel(mr_lpddr3[i], &mctl_phy->mr[i]);
+
+ /* set DRAM timing */
+ writel((twtp << 24) | (tfaw << 16) | (trasmax << 8) | tras,
+ &mctl_ctl->dramtmg[0]);
+ writel((txp << 16) | (trtp << 8) | trc, &mctl_ctl->dramtmg[1]);
+ writel((tcwl << 24) | (tcl << 16) | (trd2wr << 8) | twr2rd,
+ &mctl_ctl->dramtmg[2]);
+ writel((tmrw << 20) | (tmrd << 12) | tmod, &mctl_ctl->dramtmg[3]);
+ writel((trcd << 24) | (tccd << 16) | (trrd << 8) | trp,
+ &mctl_ctl->dramtmg[4]);
+ writel((tcksrx << 24) | (tcksre << 16) | (tckesr << 8) | tcke,
+ &mctl_ctl->dramtmg[5]);
+ /* Value suggested by ZynqMP manual and used by libdram */
+ writel((txp + 2) | 0x02020000, &mctl_ctl->dramtmg[6]);
+ writel((txsfast << 24) | (txsabort << 16) | (txsdll << 8) | txs,
+ &mctl_ctl->dramtmg[8]);
+ writel(txsr, &mctl_ctl->dramtmg[14]);
+
+ clrsetbits_le32(&mctl_ctl->init[0], (3 << 30), (1 << 30));
+ writel(0, &mctl_ctl->dfimisc);
+ clrsetbits_le32(&mctl_ctl->rankctl, 0xff0, 0x660);
+
+ /*
+ * Set timing registers of the PHY.
+ * Note: the PHY is clocked 2x from the DRAM frequency.
+ */
+ writel((trrd << 25) | (tras << 17) | (trp << 9) | (trtp << 1),
+ &mctl_phy->dtpr[0]);
+ writel((tfaw << 17) | 0x28000400 | (tmrd << 1), &mctl_phy->dtpr[1]);
+ writel(((txs << 6) - 1) | (tcke << 17), &mctl_phy->dtpr[2]);
+ writel(((txsdll << 22) - (0x1 << 16)) | twtr_sa | (tcksrea << 8),
+ &mctl_phy->dtpr[3]);
+ writel((txp << 1) | (trfc << 17) | 0x800, &mctl_phy->dtpr[4]);
+ writel((trc << 17) | (trcd << 9) | (twtr << 1), &mctl_phy->dtpr[5]);
+ writel(0x0505, &mctl_phy->dtpr[6]);
+
+ /* Configure DFI timing */
+ writel(tcl | 0x2000200 | (t_rdata_en << 16) | 0x808000,
+ &mctl_ctl->dfitmg0);
+ writel(0x040201, &mctl_ctl->dfitmg1);
+
+ /* Configure PHY timing */
+ writel(tdinit0 | (tdinit1 << 20), &mctl_phy->ptr[3]);
+ writel(tdinit2 | (tdinit3 << 18), &mctl_phy->ptr[4]);
+
+ /* set refresh timing */
+ writel((trefi << 16) | trfc, &mctl_ctl->rfshtmg);
+}
generated by cgit (git 2.34.1) at 2024-12-28 03:36:35 +0000