[U-Boot] [PATCH v2 05/12] sunxi: Add selective DRAM type and timing
Icenowy Zheng
icenowy at aosc.io
Sat Jun 3 09:10:18 UTC 2017
From: Icenowy Zheng <icenowy at aosc.xyz>
DRAM chip varies, and one code cannot satisfy all DRAMs.
Add options to select a timing set.
Currently only DDR3-1333 (the original set) is added into it.
Signed-off-by: Icenowy Zheng <icenowy at aosc.xyz>
---
arch/arm/include/asm/arch-sunxi/dram_sunxi_dw.h | 30 ++++++
arch/arm/mach-sunxi/Kconfig | 18 ++++
arch/arm/mach-sunxi/Makefile | 1 +
arch/arm/mach-sunxi/dram_sunxi_dw.c | 119 ++----------------------
arch/arm/mach-sunxi/dram_timings/Makefile | 1 +
arch/arm/mach-sunxi/dram_timings/ddr3_1333.c | 87 +++++++++++++++++
6 files changed, 143 insertions(+), 113 deletions(-)
create mode 100644 arch/arm/mach-sunxi/dram_timings/Makefile
create mode 100644 arch/arm/mach-sunxi/dram_timings/ddr3_1333.c
diff --git a/arch/arm/include/asm/arch-sunxi/dram_sunxi_dw.h b/arch/arm/include/asm/arch-sunxi/dram_sunxi_dw.h
index d301ac95c3..03fd46b724 100644
--- a/arch/arm/include/asm/arch-sunxi/dram_sunxi_dw.h
+++ b/arch/arm/include/asm/arch-sunxi/dram_sunxi_dw.h
@@ -205,4 +205,34 @@ struct sunxi_mctl_ctl_reg {
#define DXBDLR_WRITE_DELAY(x) ((x) << 8)
#define DXBDLR_READ_DELAY(x) ((x) << 0)
+/*
+ * 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 BITS_PER_BYTE 8
+#define NR_OF_BYTE_LANES (32 / BITS_PER_BYTE)
+/* The eight data lines (DQn) plus DM, DQS and DQSN */
+#define LINES_PER_BYTE_LANE (BITS_PER_BYTE + 3)
+struct dram_para {
+ u16 page_size;
+ u8 bus_full_width;
+ u8 dual_rank;
+ u8 row_bits;
+ u8 bank_bits;
+ const u8 dx_read_delays[NR_OF_BYTE_LANES][LINES_PER_BYTE_LANE];
+ const u8 dx_write_delays[NR_OF_BYTE_LANES][LINES_PER_BYTE_LANE];
+ const u8 ac_delays[31];
+};
+
+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);
+}
+
+void mctl_set_timing_params(uint16_t socid, struct dram_para *para);
+
#endif /* _SUNXI_DRAM_SUN8I_H3_H */
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 8b8fc20a51..3e529470e7 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -216,6 +216,24 @@ 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
+config SUNXI_DRAM_DDR3
+ bool
+
+choice
+ prompt "DRAM Type and Timing"
+ default SUNXI_DRAM_DDR3_1333
+
+config SUNXI_DRAM_DDR3_1333
+ bool "DDR3 1333"
+ select SUNXI_DRAM_DDR3
+ ---help---
+ This option is the original only supported memory type, which suits
+ many H3/H5/A64 boards available now.
+
+endchoice
+endif
+
config DRAM_TYPE
int "sunxi dram type"
depends on MACH_SUN8I_A83T
diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile
index 41cee26765..2a3c379b72 100644
--- a/arch/arm/mach-sunxi/Makefile
+++ b/arch/arm/mach-sunxi/Makefile
@@ -49,5 +49,6 @@ 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_SUNXI_DRAM_DW) += dram_sunxi_dw.o
+obj-$(CONFIG_SUNXI_DRAM_DW) += dram_timings/
obj-$(CONFIG_MACH_SUN9I) += dram_sun9i.o
endif
diff --git a/arch/arm/mach-sunxi/dram_sunxi_dw.c b/arch/arm/mach-sunxi/dram_sunxi_dw.c
index 3f54c8ee09..a5706423cb 100644
--- a/arch/arm/mach-sunxi/dram_sunxi_dw.c
+++ b/arch/arm/mach-sunxi/dram_sunxi_dw.c
@@ -16,34 +16,6 @@
#include <asm/arch/cpu.h>
#include <linux/kconfig.h>
-/*
- * 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 BITS_PER_BYTE 8
-#define NR_OF_BYTE_LANES (32 / BITS_PER_BYTE)
-/* The eight data lines (DQn) plus DM, DQS and DQSN */
-#define LINES_PER_BYTE_LANE (BITS_PER_BYTE + 3)
-struct dram_para {
- u16 page_size;
- u8 bus_full_width;
- u8 dual_rank;
- u8 row_bits;
- u8 bank_bits;
- const u8 dx_read_delays[NR_OF_BYTE_LANES][LINES_PER_BYTE_LANE];
- const u8 dx_write_delays[NR_OF_BYTE_LANES][LINES_PER_BYTE_LANE];
- const u8 ac_delays[31];
-};
-
-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 void mctl_phy_init(u32 val)
{
struct sunxi_mctl_ctl_reg * const mctl_ctl =
@@ -269,90 +241,6 @@ static void mctl_set_master_priority(uint16_t socid)
}
}
-static void mctl_set_timing_params(uint16_t socid, 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]);
-
- if (socid == SOCID_R40)
- writel(0x3, &mctl_ctl->lp3mr11); /* odt_en[7:4] */
-
- /* 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),
- ((socid == SOCID_H5 ? 0x33 : 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 u32 bin_to_mgray(int val)
{
static const u8 lookup_table[32] = {
@@ -449,7 +337,12 @@ static void mctl_set_cr(uint16_t socid, 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 |
+ writel(MCTL_CR_BL8 | MCTL_CR_INTERLEAVED |
+#if defined CONFIG_SUNXI_DRAM_DDR3
+ MCTL_CR_DDR3 | MCTL_CR_2T |
+#else
+#error Unsupported DRAM type!
+#endif
(para->bank_bits == 3 ? MCTL_CR_EIGHT_BANKS : MCTL_CR_FOUR_BANKS) |
MCTL_CR_BUS_FULL_WIDTH(para->bus_full_width) |
(para->dual_rank ? MCTL_CR_DUAL_RANK : MCTL_CR_SINGLE_RANK) |
diff --git a/arch/arm/mach-sunxi/dram_timings/Makefile b/arch/arm/mach-sunxi/dram_timings/Makefile
new file mode 100644
index 0000000000..7e71c76a5c
--- /dev/null
+++ b/arch/arm/mach-sunxi/dram_timings/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_SUNXI_DRAM_DDR3_1333) += ddr3_1333.o
diff --git a/arch/arm/mach-sunxi/dram_timings/ddr3_1333.c b/arch/arm/mach-sunxi/dram_timings/ddr3_1333.c
new file mode 100644
index 0000000000..0471e8a49e
--- /dev/null
+++ b/arch/arm/mach-sunxi/dram_timings/ddr3_1333.c
@@ -0,0 +1,87 @@
+#include <common.h>
+#include <asm/arch/dram.h>
+#include <asm/arch/cpu.h>
+
+void mctl_set_timing_params(uint16_t socid, 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]);
+
+ if (socid == SOCID_R40)
+ writel(0x3, &mctl_ctl->lp3mr11); /* odt_en[7:4] */
+
+ /* 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),
+ ((socid == SOCID_H5 ? 0x33 : 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);
+}
--
2.12.2
More information about the U-Boot
mailing list