Currently the H6 DRAM driver only supports one kind of LPDDR3 DRAM. Split the timing parameters for LPDDR3-1333 into a separate file, to allow selecting an alternative later at compile time (as the sunxi-dw driver does).
Signed-off-by: Andre Przywara andre.przywara@arm.com --- .../include/asm/arch-sunxi/dram_sun50i_h6.h | 28 ++++ arch/arm/mach-sunxi/Kconfig | 10 +- arch/arm/mach-sunxi/Makefile | 1 + arch/arm/mach-sunxi/dram_sun50i_h6.c | 150 +----------------- arch/arm/mach-sunxi/dram_timings/Makefile | 1 + .../mach-sunxi/dram_timings/h6_lpddr3_1333.c | 132 +++++++++++++++ configs/orangepi_one_plus_defconfig | 1 + configs/pine_h64_defconfig | 1 + 8 files changed, 176 insertions(+), 148 deletions(-) create mode 100644 arch/arm/mach-sunxi/dram_timings/h6_lpddr3_1333.c
diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h6.h b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h6.h index eeb4da5c3f..b28ae583c9 100644 --- a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h6.h +++ b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h6.h @@ -287,6 +287,32 @@ check_member(sunxi_mctl_phy_reg, dx[3].reserved_0xf0, 0xaf0); #define DCR_DDR4 (4 << 0) #define DCR_DDR8BANK BIT(3)
+ +/* + * 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 inline int ns_to_t(int nanoseconds) { const unsigned int ctrl_freq = CONFIG_DRAM_CLK / 2; @@ -294,4 +320,6 @@ static inline int ns_to_t(int nanoseconds) return DIV_ROUND_UP(ctrl_freq * nanoseconds, 1000); }
+void mctl_set_timing_params(struct dram_para *para); + #endif /* _SUNXI_DRAM_SUN50I_H6_H */ diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index 1669e62a6d..e01cb6a09a 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -340,7 +340,7 @@ 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 +370,14 @@ config SUNXI_DRAM_LPDDR3_STOCK This option is the LPDDR3 timing used by the stock boot0 by Allwinner.
+config SUNXI_DRAM_H6_LPDDR3 + bool "LPDDR3-1333 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_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 7a8b724f08..697b8af4ce 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 +42,7 @@ 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); + mctl_set_timing_params(para); break; default: panic("Unsupported DRAM type!"); @@ -171,127 +146,6 @@ 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; - 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); -} - static void mctl_sys_init(struct dram_para *para) { struct sunxi_ccm_reg * const ccm = @@ -735,12 +589,14 @@ unsigned long sunxi_dram_init(void) (struct sunxi_mctl_com_reg *)SUNXI_DRAM_COM_BASE; struct dram_para para = { .clk = CONFIG_DRAM_CLK, +#ifdef CONFIG_SUNXI_DRAM_H6_LPDDR3 .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, +#endif };
unsigned long size; diff --git a/arch/arm/mach-sunxi/dram_timings/Makefile b/arch/arm/mach-sunxi/dram_timings/Makefile index 278a8a14cc..c3e74362eb 100644 --- a/arch/arm/mach-sunxi/dram_timings/Makefile +++ b/arch/arm/mach-sunxi/dram_timings/Makefile @@ -1,3 +1,4 @@ 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_1333.o diff --git a/arch/arm/mach-sunxi/dram_timings/h6_lpddr3_1333.c b/arch/arm/mach-sunxi/dram_timings/h6_lpddr3_1333.c new file mode 100644 index 0000000000..1000860113 --- /dev/null +++ b/arch/arm/mach-sunxi/dram_timings/h6_lpddr3_1333.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); +} diff --git a/configs/orangepi_one_plus_defconfig b/configs/orangepi_one_plus_defconfig index 65537c422f..e4b9f3a1c8 100644 --- a/configs/orangepi_one_plus_defconfig +++ b/configs/orangepi_one_plus_defconfig @@ -3,6 +3,7 @@ CONFIG_ARCH_SUNXI=y CONFIG_NR_DRAM_BANKS=1 CONFIG_SPL=y CONFIG_MACH_SUN50I_H6=y +CONFIG_SUNXI_DRAM_H6_LPDDR3=y CONFIG_MMC0_CD_PIN="PF6" # CONFIG_PSCI_RESET is not set # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set diff --git a/configs/pine_h64_defconfig b/configs/pine_h64_defconfig index 5ac89b462c..d88a6b1fd8 100644 --- a/configs/pine_h64_defconfig +++ b/configs/pine_h64_defconfig @@ -3,6 +3,7 @@ CONFIG_ARCH_SUNXI=y CONFIG_NR_DRAM_BANKS=1 CONFIG_SPL=y CONFIG_MACH_SUN50I_H6=y +CONFIG_SUNXI_DRAM_H6_LPDDR3=y CONFIG_MMC0_CD_PIN="PF6" CONFIG_MMC_SUNXI_SLOT_EXTRA=2 # CONFIG_PSCI_RESET is not set