[PATCH 1/1] sunxi: H616: add LPDDR4 DRAM support
Mikhail Kalashnikov
iuncuim at gmail.com
Sat Jul 29 13:13:31 CEST 2023
From: iuncuim <iuncuim at gmail.com>
The H616 SoC family has support for several types of DRAM: DDR3,
LPDDR3, DDR4 and LPDDR4.
At the moment, the driver only supports DDR3 and LPDDR3 memory.
Let's extend the driver to support the LPDDR4 memory. This type
of memory widely used in device with T507(-H) SoC. All "magic"
values obtained from the boot0.
These changes have been successfully tested by me with MYiR MYB-YT507
(1GB ARTMEM ATL4B08323M62) and 9tripod X507BV4 (2GB FORESEE NCLDXC2MG512M32).
Signed-off-by: Mikhail Kalashnikov <iuncuim at gmail.com>
---
.../include/asm/arch-sunxi/dram_sun50i_h616.h | 1 +
arch/arm/mach-sunxi/Kconfig | 11 +
arch/arm/mach-sunxi/dram_sun50i_h616.c | 200 ++++++++++++++----
arch/arm/mach-sunxi/dram_timings/Makefile | 1 +
.../dram_timings/h616_lpddr4_1200.c | 96 +++++++++
5 files changed, 270 insertions(+), 39 deletions(-)
create mode 100644 arch/arm/mach-sunxi/dram_timings/h616_lpddr4_1200.c
diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
index 11774deded..ee25c324ff 100644
--- a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
+++ b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
@@ -130,6 +130,7 @@ check_member(sunxi_mctl_ctl_reg, unk_0x4240, 0x4240);
#define MSTR_DEVICETYPE_LPDDR2 BIT(2)
#define MSTR_DEVICETYPE_LPDDR3 BIT(3)
#define MSTR_DEVICETYPE_DDR4 BIT(4)
+#define MSTR_DEVICETYPE_LPDDR4 BIT(5)
#define MSTR_DEVICETYPE_MASK GENMASK(5, 0)
#define MSTR_2TMODE BIT(10)
#define MSTR_BUSWIDTH_FULL (0 << 12)
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index e20c3a3ee9..0e82edeeab 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -441,6 +441,9 @@ config SUNXI_DRAM_DDR2
config SUNXI_DRAM_LPDDR3
bool
+config SUNXI_DRAM_LPDDR4
+ bool
+
choice
prompt "DRAM Type and Timing"
default SUNXI_DRAM_DDR3_1333 if !MACH_SUN8I_V3S
@@ -484,6 +487,14 @@ config SUNXI_DRAM_H616_LPDDR3
This option is the LPDDR3 timing used by the stock boot0 by
Allwinner.
+config SUNXI_DRAM_H616_LPDDR4
+ bool "LPDDR4 DRAM chips on the H616 DRAM controller"
+ select SUNXI_DRAM_LPDDR4
+ depends on DRAM_SUN50I_H616
+ help
+ This option is the LPDDR4 timing used by the stock boot0 by
+ Allwinner.
+
config SUNXI_DRAM_H616_DDR3_1333
bool "DDR3-1333 boot0 timings on the H616 DRAM controller"
select SUNXI_DRAM_DDR3
diff --git a/arch/arm/mach-sunxi/dram_sun50i_h616.c b/arch/arm/mach-sunxi/dram_sun50i_h616.c
index 7e580b62dc..7b8799460b 100644
--- a/arch/arm/mach-sunxi/dram_sun50i_h616.c
+++ b/arch/arm/mach-sunxi/dram_sun50i_h616.c
@@ -238,6 +238,11 @@ static const u8 phy_init[] = {
0x08, 0x01, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x07,
0x17, 0x19, 0x1a
+#elif defined(CONFIG_SUNXI_DRAM_H616_LPDDR4)
+ 0x03, 0x00, 0x17, 0x05, 0x02, 0x19, 0x06, 0x07,
+ 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x01,
+ 0x18, 0x04, 0x1a
#endif
};
@@ -247,19 +252,31 @@ static void mctl_phy_configure_odt(const struct dram_para *para)
val = para->dx_dri & 0x1f;
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x388);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x38c);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(4, SUNXI_DRAM_PHY0_BASE + 0x38c);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x38c);
val = (para->dx_dri >> 8) & 0x1f;
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3c8);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3cc);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(4, SUNXI_DRAM_PHY0_BASE + 0x3cc);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3cc);
val = (para->dx_dri >> 16) & 0x1f;
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x408);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x40c);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(4, SUNXI_DRAM_PHY0_BASE + 0x40c);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x40c);
val = (para->dx_dri >> 24) & 0x1f;
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x448);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x44c);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(4, SUNXI_DRAM_PHY0_BASE + 0x44c);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x44c);
val = para->ca_dri & 0x1f;
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x340);
@@ -274,28 +291,40 @@ static void mctl_phy_configure_odt(const struct dram_para *para)
writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x380);
else
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x380);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x384);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x384);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x384);
val = (para->dx_odt >> 8) & 0x1f;
if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x3c0);
else
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3c0);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3c4);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x3c4);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x3c4);
val = (para->dx_odt >> 16) & 0x1f;
if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x400);
else
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x400);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x404);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x404);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x404);
val = (para->dx_odt >> 24) & 0x1f;
if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x440);
else
writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x440);
- writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x444);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel_relaxed(0, SUNXI_DRAM_PHY0_BASE + 0x444);
+ else
+ writel_relaxed(val, SUNXI_DRAM_PHY0_BASE + 0x444);
dmb();
}
@@ -813,8 +842,9 @@ static void mctl_phy_ca_bit_delay_compensation(const struct dram_para *para,
writel(val, SUNXI_DRAM_PHY0_BASE + 0x7e0);
writel(val, SUNXI_DRAM_PHY0_BASE + 0x7f4);
- if (para->type == SUNXI_DRAM_TYPE_DDR3) {
- val = (para->tpr10 >> 7) & 0x1e;
+ val = (para->tpr10 >> 7) & 0x1e;
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
if (para->tpr2 & 1) {
writel(val, SUNXI_DRAM_PHY0_BASE + 0x794);
if (config->ranks == 2) {
@@ -840,8 +870,8 @@ static void mctl_phy_ca_bit_delay_compensation(const struct dram_para *para,
writel(val, SUNXI_DRAM_PHY0_BASE + 0x7b8);
}
}
- } else if (para->type == SUNXI_DRAM_TYPE_LPDDR3) {
- val = (para->tpr10 >> 7) & 0x1e;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
if (para->tpr2 & 1) {
writel(val, SUNXI_DRAM_PHY0_BASE + 0x7a0);
if (config->ranks == 2) {
@@ -855,7 +885,15 @@ static void mctl_phy_ca_bit_delay_compensation(const struct dram_para *para,
writel(val, SUNXI_DRAM_PHY0_BASE + 0x7f8);
}
}
- }
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ if (para->tpr2 & 1) {
+ writel(val, SUNXI_DRAM_PHY0_BASE + 0x788);
+ } else {
+ writel(val, SUNXI_DRAM_PHY0_BASE + 0x794);
+ };
+ break;
+ };
}
static bool mctl_phy_init(const struct dram_para *para,
@@ -868,30 +906,39 @@ static bool mctl_phy_init(const struct dram_para *para,
u32 val, val2, *ptr, mr0, mr2;
int i;
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ clrbits_le32(SUNXI_DRAM_PHY0_BASE + 0x4,0x80);
+
if (config->bus_full_width)
val = 0xf;
else
val = 3;
clrsetbits_le32(SUNXI_DRAM_PHY0_BASE + 0x3c, 0xf, val);
- if (para->tpr2 & 0x100) {
- if (para->type == SUNXI_DRAM_TYPE_DDR3) {
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
+ if (para->tpr2 & 0x100) {
val = 9;
val2 = 7;
- } else if (para->type == SUNXI_DRAM_TYPE_LPDDR3) {
- // untested setup: use some values for now
- val = 14;
- val2 = 8;
- }
- } else {
- if (para->type == SUNXI_DRAM_TYPE_DDR3) {
+ } else {
val = 13;
val2 = 9;
- } else if (para->type == SUNXI_DRAM_TYPE_LPDDR3) {
+ }
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
+ if (para->tpr2 & 0x100) {
+ val = 12;
+ val2 = 6;
+ } else {
val = 14;
val2 = 8;
}
- }
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ val = 20;
+ val2 = 10;
+ break;
+ };
writel(val, SUNXI_DRAM_PHY0_BASE + 0x14);
writel(val, SUNXI_DRAM_PHY0_BASE + 0x35c);
@@ -915,19 +962,33 @@ static bool mctl_phy_init(const struct dram_para *para,
if (para->tpr10 & TPR10_CA_BIT_DELAY)
mctl_phy_ca_bit_delay_compensation(para, config);
- if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
val = 0x80;
- else if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
val = 0xc0;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ val = 0x37;
+ break;
+ };
writel(val, SUNXI_DRAM_PHY0_BASE + 0x3dc);
writel(val, SUNXI_DRAM_PHY0_BASE + 0x45c);
mctl_phy_configure_odt(para);
- if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
val = 0x0a;
- else if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
val = 0x0b;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ val = 0x0d;
+ break;
+ };
clrsetbits_le32(SUNXI_DRAM_PHY0_BASE + 4, 0x7, val);
if (para->clk <= 672)
@@ -977,8 +1038,8 @@ static bool mctl_phy_init(const struct dram_para *para,
mr0 = 0x1f14;
mr2 = 0x20;
}
-
- if (para->type == SUNXI_DRAM_TYPE_DDR3) {
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
writel(mr0, &mctl_ctl->mrctrl1);
writel(0x80000030, &mctl_ctl->mrctrl0);
mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
@@ -994,7 +1055,8 @@ static bool mctl_phy_init(const struct dram_para *para,
writel(0, &mctl_ctl->mrctrl1);
writel(0x80003030, &mctl_ctl->mrctrl0);
mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
- } else if (para->type == SUNXI_DRAM_TYPE_LPDDR3) {
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
writel(mr0, &mctl_ctl->mrctrl1);
writel(0x800000f0, &mctl_ctl->mrctrl0);
mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
@@ -1010,7 +1072,45 @@ static bool mctl_phy_init(const struct dram_para *para,
writel(0x301, &mctl_ctl->mrctrl1);
writel(0x800000f0, &mctl_ctl->mrctrl0);
mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
- }
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ writel(0x0, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0x134, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0x21b, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0x333, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0x403, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0xb04, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0xc72, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0xe09, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+
+ writel(0x1624, &mctl_ctl->mrctrl1);
+ writel(0x80000030, &mctl_ctl->mrctrl0);
+ mctl_await_completion(&mctl_ctl->mrctrl0, BIT(31), 0);
+ break;
+ };
writel(0, SUNXI_DRAM_PHY0_BASE + 0x54);
@@ -1077,6 +1177,9 @@ static bool mctl_ctrl_init(const struct dram_para *para,
clrsetbits_le32(&mctl_com->unk_0x500, BIT(24), 0x200);
writel(0x8000, &mctl_ctl->clken);
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ writel(1, SUNXI_DRAM_COM_BASE + 0x50);
+
setbits_le32(&mctl_com->unk_0x008, 0xff00);
clrsetbits_le32(&mctl_ctl->sched[0], 0xff00, 0x3000);
@@ -1085,11 +1188,18 @@ static bool mctl_ctrl_init(const struct dram_para *para,
setbits_le32(&mctl_com->unk_0x008, 0xff00);
- reg_val = MSTR_BURST_LENGTH(8) | MSTR_ACTIVE_RANKS(config->ranks);
- if (para->type == SUNXI_DRAM_TYPE_DDR3)
- reg_val |= MSTR_DEVICETYPE_DDR3 | MSTR_2TMODE;
- else if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
- reg_val |= MSTR_DEVICETYPE_LPDDR3;
+ reg_val = MSTR_ACTIVE_RANKS(config->ranks);
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
+ reg_val |= MSTR_BURST_LENGTH(8) | MSTR_DEVICETYPE_DDR3 | MSTR_2TMODE;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
+ reg_val |= MSTR_BURST_LENGTH(8) | MSTR_DEVICETYPE_LPDDR3;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ reg_val |= MSTR_BURST_LENGTH(16) | MSTR_DEVICETYPE_LPDDR4;
+ break;
+ };
if (config->bus_full_width)
reg_val |= MSTR_BUSWIDTH_FULL;
else
@@ -1101,10 +1211,17 @@ static bool mctl_ctrl_init(const struct dram_para *para,
else
writel(0x0201, &mctl_ctl->odtmap);
- if (para->type == SUNXI_DRAM_TYPE_DDR3)
+ switch (para->type) {
+ case SUNXI_DRAM_TYPE_DDR3:
reg_val = 0x06000400;
- else if (para->type == SUNXI_DRAM_TYPE_LPDDR3)
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR3:
reg_val = 0x09020400;
+ break;
+ case SUNXI_DRAM_TYPE_LPDDR4:
+ reg_val = 0x04000400;
+ break;
+ };
writel(reg_val, &mctl_ctl->odtcfg);
writel(reg_val, &mctl_ctl->unk_0x2240);
writel(reg_val, &mctl_ctl->unk_0x3240);
@@ -1124,6 +1241,9 @@ static bool mctl_ctrl_init(const struct dram_para *para,
setbits_le32(&mctl_ctl->unk_0x3180, BIT(31) | BIT(30));
setbits_le32(&mctl_ctl->unk_0x4180, BIT(31) | BIT(30));
+ if (para->type == SUNXI_DRAM_TYPE_LPDDR4)
+ setbits_le32(&mctl_ctl->dbictl, 0x1);
+
setbits_le32(&mctl_ctl->rfshctl3, BIT(0));
clrbits_le32(&mctl_ctl->dfimisc, BIT(0));
@@ -1246,6 +1366,8 @@ static const struct dram_para para = {
.type = SUNXI_DRAM_TYPE_DDR3,
#elif defined(CONFIG_SUNXI_DRAM_H616_LPDDR3)
.type = SUNXI_DRAM_TYPE_LPDDR3,
+#elif defined(CONFIG_SUNXI_DRAM_H616_LPDDR4)
+ .type = SUNXI_DRAM_TYPE_LPDDR4,
#endif
.dx_odt = CONFIG_DRAM_SUN50I_H616_DX_ODT,
.dx_dri = CONFIG_DRAM_SUN50I_H616_DX_DRI,
diff --git a/arch/arm/mach-sunxi/dram_timings/Makefile b/arch/arm/mach-sunxi/dram_timings/Makefile
index 8bfd99448a..21afad4cd7 100644
--- a/arch/arm/mach-sunxi/dram_timings/Makefile
+++ b/arch/arm/mach-sunxi/dram_timings/Makefile
@@ -5,3 +5,4 @@ obj-$(CONFIG_SUNXI_DRAM_H6_LPDDR3) += h6_lpddr3.o
obj-$(CONFIG_SUNXI_DRAM_H6_DDR3_1333) += h6_ddr3_1333.o
obj-$(CONFIG_SUNXI_DRAM_H616_DDR3_1333) += h616_ddr3_1333.o
obj-$(CONFIG_SUNXI_DRAM_H616_LPDDR3) += h616_lpddr3.o
+obj-$(CONFIG_SUNXI_DRAM_H616_LPDDR4) += h616_lpddr4_1200.o
diff --git a/arch/arm/mach-sunxi/dram_timings/h616_lpddr4_1200.c b/arch/arm/mach-sunxi/dram_timings/h616_lpddr4_1200.c
new file mode 100644
index 0000000000..0614716268
--- /dev/null
+++ b/arch/arm/mach-sunxi/dram_timings/h616_lpddr4_1200.c
@@ -0,0 +1,96 @@
+/*
+ * sun50i H616 LPDDR4-1200 timings, as programmed by Allwinner's boot0
+ *
+ * The chips are probably able to be driven by a faster clock, but boot0
+ * uses a more conservative timing (as usual).
+ *
+ * (C) Copyright 2020 Jernej Skrabec <jernej.skrabec at siol.net>
+ * Based on H6 DDR3 timings:
+ * (C) Copyright 2018,2019 Arm Ltd.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/cpu.h>
+
+void mctl_set_timing_params(const struct dram_para *para)
+{
+ struct sunxi_mctl_ctl_reg * const mctl_ctl =
+ (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE;
+
+ u8 tccd = 4; /* JEDEC: 4nCK */
+ u8 tfaw = ns_to_t(36); /* JEDEC: 30 ns w/ 1K pages */
+ u8 trrd = max(ns_to_t(6), 4); /* JEDEC: max(6 ns, 4nCK) */
+ u8 trcd = ns_to_t(17); /* JEDEC: 13.5 ns */
+ u8 trc = ns_to_t(60); /* JEDEC: 49.5 ns */
+ u8 txp = max(ns_to_t(6), 3); /* JEDEC: max(6 ns, 3nCK) */
+ u8 trtp = max(ns_to_t(8), 4); /* JEDEC: max(7.5 ns, 4nCK) */
+ u8 trp = ns_to_t(20); /* JEDEC: >= 13.75 ns */
+ u8 tras = ns_to_t(40); /* JEDEC >= 36 ns, <= 9*trefi */
+ u16 trefi = ns_to_t(7800) / 32; /* JEDEC: 7.8us at Tcase <= 85C */
+ u16 trfc = ns_to_t(350); /* JEDEC: 160 ns for 2Gb */
+ u16 txsr = 69; /* ? */
+
+ u8 tmrw = 6; /* ? */
+ u8 tmrd = 6; /* JEDEC: 4nCK */
+ u8 tmod = max(ns_to_t(15), 12); /* JEDEC: max(15 ns, 12nCK) */
+ u8 tcke = max(ns_to_t(6), 6); /* JEDEC: max(5.625 ns, 3nCK) */
+ u8 tcksrx = max(ns_to_t(5), 2); /* JEDEC: max(10 ns, 5nCK) */
+ u8 tcksre = max(ns_to_t(5), 2); /* JEDEC: max(10 ns, 5nCK) */
+ u8 tckesr = tcke; /* JEDEC: tCKE(min) + 1nCK */
+ u8 trasmax = (para->clk / 2) / 32; /* JEDEC: tREFI * 9 */
+ u8 txs = ns_to_t(380) / 32; /* JEDEC: max(5nCK,tRFC+10ns) */
+ u8 txsdll = 16; /* JEDEC: 512 nCK */
+ u8 txsabort = 4; /* ? */
+ u8 txsfast = 4; /* ? */
+ u8 tcl = 10; /* JEDEC: CL / 2 => 6 */
+ u8 tcwl = 5; /* JEDEC: 8 */
+ u8 t_rdata_en = 9; /* ? */
+
+ u8 twtp = 24; /* (WL + BL / 2 + tWR) / 2 */
+ u8 twr2rd = trtp + 14; /* (WL + BL / 2 + tWTR) / 2 */
+ u8 trd2wr = 18; /* (RL + BL / 2 + 2 - WL) / 2 */
+
+ /* 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(0x00020208, &mctl_ctl->dramtmg[9]);
+ writel(0xE0C05, &mctl_ctl->dramtmg[10]);
+ writel(0x440C021C, &mctl_ctl->dramtmg[11]);
+ writel(8, &mctl_ctl->dramtmg[12]);
+ writel(0xA100002, &mctl_ctl->dramtmg[13]);
+ writel(txsr, &mctl_ctl->dramtmg[14]);
+
+ writel(0x203f0, &mctl_ctl->init[0]);
+ writel(0x1f20000, &mctl_ctl->init[1]);
+ writel(0xd05, &mctl_ctl->init[2]);
+ writel(0x0034001b, &mctl_ctl->init[3]);
+ writel(0x00330000, &mctl_ctl->init[4]);
+ writel(0x00100004, &mctl_ctl->init[5]);
+ writel(0x00040072, &mctl_ctl->init[6]);
+ writel(0x00240009, &mctl_ctl->init[7]);
+
+ writel(0, &mctl_ctl->dfimisc);
+ clrsetbits_le32(&mctl_ctl->rankctl, 0xff0, 0x660);
+
+ /* Configure DFI timing */
+ writel(0x02918005, &mctl_ctl->dfitmg0);
+ writel(0x100202, &mctl_ctl->dfitmg1);
+
+ /* set refresh timing */
+ writel(0x002b0041, &mctl_ctl->rfshtmg);
+}
\ No newline at end of file
--
2.41.0
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