[linux-sunxi] [PATCH 11/17] sunxi: Add H616 DRAM support
Samuel Holland
samuel at sholland.org
Tue Jan 5 04:14:47 CET 2021
On 1/4/21 12:39 PM, Jernej Škrabec wrote:
> Dne ponedeljek, 04. januar 2021 ob 03:39:52 CET je Samuel Holland napisal(a):
>> On 1/3/21 3:26 AM, Jernej Skrabec wrote:
>>> Allwinner H616 supports many types of DRAM. Most notably it supports
>>> LPDDR4. However, all commercially available boards at this time use
>>> only DDR3, so this commit adds only DDR3 support.
>>>
>>> Controller and MBUS are very similar to H6 but PHY is completely
>>> unknown.
>>>
>>> Signed-off-by: Jernej Skrabec <jernej.skrabec at siol.net>
>>> ---
>>>
>>> arch/arm/include/asm/arch-sunxi/dram.h | 2 +
>>> .../include/asm/arch-sunxi/dram_sun50i_h616.h | 159 +++
>>> arch/arm/mach-sunxi/Kconfig | 43 +
>>> arch/arm/mach-sunxi/Makefile | 2 +
>>> arch/arm/mach-sunxi/dram_sun50i_h616.c | 1023 +++++++++++++++++
>>> arch/arm/mach-sunxi/dram_timings/Makefile | 2 +
>>> .../mach-sunxi/dram_timings/h616_ddr3_1333.c | 94 ++
>>> 7 files changed, 1325 insertions(+)
>>> create mode 100644 arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
>>> create mode 100644 arch/arm/mach-sunxi/dram_sun50i_h616.c
>>> create mode 100644 arch/arm/mach-sunxi/dram_timings/h616_ddr3_1333.c
>>>
>>> diff --git a/arch/arm/include/asm/arch-sunxi/dram.h
>>> b/arch/arm/include/asm/arch-sunxi/dram.h index 8002b7efdc19..c3b3e1f512b2
>>> 100644
>>> --- a/arch/arm/include/asm/arch-sunxi/dram.h
>>> +++ b/arch/arm/include/asm/arch-sunxi/dram.h
>>> @@ -29,6 +29,8 @@
>>>
>>> #include <asm/arch/dram_sun9i.h>
>>> #elif defined(CONFIG_MACH_SUN50I_H6)
>>> #include <asm/arch/dram_sun50i_h6.h>
>>>
>>> +#elif defined(CONFIG_MACH_SUN50I_H616)
>>> +#include <asm/arch/dram_sun50i_h616.h>
>>>
>>> #else
>>> #include <asm/arch/dram_sun4i.h>
>>> #endif
>>>
>>> diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
>>> b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h new file mode 100644
>>> index 000000000000..5d105afd6110
>>> --- /dev/null
>>> +++ b/arch/arm/include/asm/arch-sunxi/dram_sun50i_h616.h
>>> @@ -0,0 +1,159 @@
>>> +/*
>>> + * H616 dram controller register and constant defines
>>> + *
>>> + * (C) Copyright 2020 Jernej Skrabec <jernej.skrabec at siol.net>
>>> + *
>>> + * Based on H6 one, which is:
>>> + * (C) Copyright 2017 Icenowy Zheng <icenowy at aosc.io>
>>> + *
>>> + * SPDX-License-Identifier: GPL-2.0+
>>> + */
>>> +
>>> +#ifndef _SUNXI_DRAM_SUN50I_H616_H
>>> +#define _SUNXI_DRAM_SUN50I_H616_H
>>> +
>>> +#include <stdbool.h>
>>> +#ifndef __ASSEMBLY__
>>> +#include <linux/bitops.h>
>>> +#endif
>>> +
>>> +enum sunxi_dram_type {
>>> + SUNXI_DRAM_TYPE_DDR3 = 3,
>>> + SUNXI_DRAM_TYPE_DDR4,
>>> + SUNXI_DRAM_TYPE_LPDDR3 = 7,
>>> + SUNXI_DRAM_TYPE_LPDDR4
>>> +};
>>> +
>>> +/* MBUS part is largely the same as in H6, except for one special
>>> register */ +struct sunxi_mctl_com_reg {
>>> + u32 cr; /* 0x000 control register */
>>> + u8 reserved_0x004[4]; /* 0x004 */
>>> + u32 unk_0x008; /* 0x008 */
>>> + u32 tmr; /* 0x00c timer register */
>>> + u8 reserved_0x010[4]; /* 0x010 */
>>> + u32 unk_0x014; /* 0x014 */
>>> + u8 reserved_0x018[8]; /* 0x018 */
>>> + u32 maer0; /* 0x020 master enable register 0 */
>>> + u32 maer1; /* 0x024 master enable register 1 */
>>> + u32 maer2; /* 0x028 master enable register 2 */
>>> + u8 reserved_0x02c[468]; /* 0x02c */
>>> + u32 bwcr; /* 0x200 bandwidth control register */
>>> + u8 reserved_0x204[12]; /* 0x204 */
>>> + /*
>>> + * The last master configured by BSP libdram is at 0x49x, so the
>>> + * size of this struct array is set to 41 (0x29) now.
>>> + */
>>> + struct {
>>> + u32 cfg0; /* 0x0 */
>>> + u32 cfg1; /* 0x4 */
>>> + u8 reserved_0x8[8]; /* 0x8 */
>>> + } master[41]; /* 0x210 + index * 0x10 */
>>> + u8 reserved_0x4a0[96]; /* 0x4a0 */
>>> + u32 unk_0x500; /* 0x500 */
>>> +};
>>> +check_member(sunxi_mctl_com_reg, unk_0x500, 0x500);
>>> +
>>> +/*
>>> + * Controller registers seems to be the same or at least very similar
>>> + * to those in H6.
>>> + */
>>> +struct sunxi_mctl_ctl_reg {
>>> + u32 mstr; /* 0x000 */
>>> + u32 statr; /* 0x004 unused */
>>> + u32 mstr1; /* 0x008 unused */
>>> + u32 unk_0x00c; /* 0x00c */
>>
>> This is clken (and the same on H6). It is obvious when looking at the
>> standby power-down sequence.
>
> Where is that sequence? I mostly consulted H6 and Zynq docs where this
> register is not explained. I'll update it in next revision.
This is from the H6 ARISC firmware, which has a similar structure to earlier
generations with known registers.
Cheers,
Samuel
> Best regards,
> Jernej
>
>>
>>> + u32 mrctrl0; /* 0x010 unused */
>>> + u32 mrctrl1; /* 0x014 unused */
>>> + u32 mrstatr; /* 0x018 unused */
>>> + u32 mrctrl2; /* 0x01c unused */
>>> + u32 derateen; /* 0x020 unused */
>>> + u32 derateint; /* 0x024 unused */
>>> + u8 reserved_0x028[8]; /* 0x028 */
>>> + u32 pwrctl; /* 0x030 unused */
>>> + u32 pwrtmg; /* 0x034 unused */
>>> + u32 hwlpctl; /* 0x038 unused */
>>> + u8 reserved_0x03c[20]; /* 0x03c */
>>> + u32 rfshctl0; /* 0x050 unused */
>>> + u32 rfshctl1; /* 0x054 unused */
>>> + u8 reserved_0x058[8]; /* 0x05c */
>>> + u32 rfshctl3; /* 0x060 */
>>> + u32 rfshtmg; /* 0x064 */
>>> + u8 reserved_0x068[104]; /* 0x068 */
>>> + u32 init[8]; /* 0x0d0 */
>>> + u32 dimmctl; /* 0x0f0 unused */
>>> + u32 rankctl; /* 0x0f4 */
>>> + u8 reserved_0x0f8[8]; /* 0x0f8 */
>>> + u32 dramtmg[17]; /* 0x100 */
>>> + u8 reserved_0x144[60]; /* 0x144 */
>>> + u32 zqctl[3]; /* 0x180 */
>>> + u32 zqstat; /* 0x18c unused */
>>> + u32 dfitmg0; /* 0x190 */
>>> + u32 dfitmg1; /* 0x194 */
>>> + u32 dfilpcfg[2]; /* 0x198 unused */
>>> + u32 dfiupd[3]; /* 0x1a0 */
>>> + u32 reserved_0x1ac; /* 0x1ac */
>>> + u32 dfimisc; /* 0x1b0 */
>>> + u32 dfitmg2; /* 0x1b4 unused */
>>> + u32 dfitmg3; /* 0x1b8 unused */
>>> + u32 dfistat; /* 0x1bc */
>>> + u32 dbictl; /* 0x1c0 */
>>> + u8 reserved_0x1c4[60]; /* 0x1c4 */
>>> + u32 addrmap[12]; /* 0x200 */
>>> + u8 reserved_0x230[16]; /* 0x230 */
>>> + u32 odtcfg; /* 0x240 */
>>> + u32 odtmap; /* 0x244 */
>>> + u8 reserved_0x248[8]; /* 0x248 */
>>> + u32 sched[2]; /* 0x250 */
>>> + u8 reserved_0x258[180]; /* 0x258 */
>>> + u32 dbgcmd; /* 0x30c unused */
>>> + u32 dbgstat; /* 0x310 unused */
>>> + u8 reserved_0x314[12]; /* 0x314 */
>>> + u32 swctl; /* 0x320 */
>>> + u32 swstat; /* 0x324 */
>>> + u8 reserved_0x328[7768];/* 0x328 */
>>> + u32 unk_0x2180; /* 0x2180 */
>>> + u8 reserved_0x2184[188];/* 0x2184 */
>>> + u32 unk_0x2240; /* 0x2240 */
>>> + u8 reserved_0x2244[3900];/* 0x2244 */
>>> + u32 unk_0x3180; /* 0x3180 */
>>> + u8 reserved_0x3184[188];/* 0x3184 */
>>> + u32 unk_0x3240; /* 0x3240 */
>>> + u8 reserved_0x3244[3900];/* 0x3244 */
>>> + u32 unk_0x4180; /* 0x4180 */
>>> + u8 reserved_0x4184[188];/* 0x4184 */
>>> + u32 unk_0x4240; /* 0x4240 */
>>> +};
>>> +check_member(sunxi_mctl_ctl_reg, swstat, 0x324);
>>> +check_member(sunxi_mctl_ctl_reg, unk_0x4240, 0x4240);
>>> +
>>> +#define MSTR_DEVICETYPE_DDR3 BIT(0)
>>> +#define MSTR_DEVICETYPE_LPDDR2 BIT(2)
>>> +#define MSTR_DEVICETYPE_LPDDR3 BIT(3)
>>> +#define MSTR_DEVICETYPE_DDR4 BIT(4)
>>> +#define MSTR_DEVICETYPE_MASK GENMASK(5, 0)
>>> +#define MSTR_2TMODE BIT(10)
>>> +#define MSTR_BUSWIDTH_FULL (0 << 12)
>>> +#define MSTR_BUSWIDTH_HALF (1 << 12)
>>> +#define MSTR_ACTIVE_RANKS(x) (((x == 2) ? 3 : 1) << 24)
>>> +#define MSTR_BURST_LENGTH(x) (((x) >> 1) << 16)
>>> +
>>> +struct dram_para {
>>> + u32 clk;
>>> + enum sunxi_dram_type type;
>>> + u8 cols;
>>> + u8 rows;
>>> + u8 ranks;
>>> + u8 bus_full_width;
>>> +};
>>> +
>>> +
>>> +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(struct dram_para *para);
>>> +
>>> +#endif /* _SUNXI_DRAM_SUN50I_H616_H */
>>> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
>>> index 69ab670abf39..1a5497989f04 100644
>>> --- a/arch/arm/mach-sunxi/Kconfig
>>> +++ b/arch/arm/mach-sunxi/Kconfig
>>> @@ -48,6 +48,46 @@ config DRAM_SUN50I_H6
>>>
>>> Select this dram controller driver for some sun50i platforms,
>>> like H6.
>>>
>>> +config DRAM_SUN50I_H616
>>> + bool
>>> + help
>>> + Select this dram controller driver for some sun50i platforms,
>>> + like H616.
>>> +
>>> +if DRAM_SUN50I_H616
>>> +config DRAM_SUN50I_H616_WRITE_LEVELING
>>> + bool "H616 DRAM write leveling"
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs write leveling.
>>> +
>>> +config DRAM_SUN50I_H616_READ_CALIBRATION
>>> + bool"H616 DRAM read calibration"
>>
>> Missing a space here.
>>
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs read calibration.
>>> +
>>> +config DRAM_SUN50I_H616_READ_TRAINING
>>> + bool "H616 DRAM read training"
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs read training.
>>> +
>>> +config DRAM_SUN50I_H616_WRITE_TRAINING
>>> + bool "H616 DRAM write training"
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs write training.
>>> +
>>> +config DRAM_SUN50I_H616_BIT_DELAY_COMPENSATION
>>> + bool "H616 DRAM bit delay compensation"
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs bit delay
>>> + compensation.
>>> +
>>> +config DRAM_SUN50I_H616_UNKNOWN_FEATURE
>>> + bool "H616 DRAM unknown feature"
>>> + ---help---
>>> + Select this when DRAM on your H616 board needs this unknown
>>> + feature.
>>> +endif
>>> +
>>>
>>> config SUN6I_P2WI
>>>
>>> bool "Allwinner sun6i internal P2WI controller"
>>> help
>>>
>>> @@ -423,6 +463,7 @@ config DRAM_CLK
>>>
>>> MACH_SUN8I_V3S
>>>
>>> default 672 if MACH_SUN50I
>>> default 744 if MACH_SUN50I_H6
>>>
>>> + default 720 if MACH_SUN50I_H616
>>>
>>> ---help---
>>> Set the dram clock speed, valid range 240 - 480 (prior to sun9i),
>>> must be a multiple of 24. For the sun9i (A80), the tested values
>>>
>>> @@ -439,6 +480,7 @@ endif
>>>
>>> config DRAM_ZQ
>>>
>>> int "sunxi dram zq value"
>>>
>>> + depends on !MACH_SUN50I_H616
>>>
>>> default 123 if MACH_SUN4I || MACH_SUN5I || MACH_SUN6I || \
>>>
>>> MACH_SUN8I_A23 || MACH_SUN8I_A33 ||
> MACH_SUN8I_A83T
>>>
>>> default 127 if MACH_SUN7I
>>>
>>> @@ -456,6 +498,7 @@ config DRAM_ODT_EN
>>>
>>> default y if MACH_SUN8I_R40
>>> default y if MACH_SUN50I
>>> default y if MACH_SUN50I_H6
>>>
>>> + default y if MACH_SUN50I_H616
>>>
>>> ---help---
>>> Select this to enable dram odt (on die termination).
>>>
>>> diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile
>>> index b8aca43d6630..3f081d92f379 100644
>>> --- a/arch/arm/mach-sunxi/Makefile
>>> +++ b/arch/arm/mach-sunxi/Makefile
>>> @@ -40,4 +40,6 @@ 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/
>>>
>>> +obj-$(CONFIG_DRAM_SUN50I_H616) += dram_sun50i_h616.o
>>> +obj-$(CONFIG_DRAM_SUN50I_H616) += dram_timings/
>>>
>>> endif
>>>
>>> diff --git a/arch/arm/mach-sunxi/dram_sun50i_h616.c
>>> b/arch/arm/mach-sunxi/dram_sun50i_h616.c new file mode 100644
>>> index 000000000000..0c86f54b8a73[...]
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