[U-Boot] [PATCH v3 50/66] rockchip: rk3368: add DRAM controller driver with DRAM initialisation

汤云平
2017-08-01T02:09:56Z

Dear Tomsich：

see as below，

diff --git a/drivers/ram/rockchip/dmc-rk3368.c b/drivers/ram/rockchip/dmc-rk3368.c
index fea96a5..d4cece5 100644
--- a/drivers/ram/rockchip/dmc-rk3368.c
+++ b/drivers/ram/rockchip/dmc-rk3368.c
@@ -333,17 +333,25 @@ static void ddrctl_reset(struct rk3368_cru *cru)
{
const u32 ctl_reset = BIT(3) | BIT(2);
const u32 phy_reset = BIT(1) | BIT(0);
-
+ /* should de-reset phy before de-reset pctl */
rk_setreg(&cru->softrst_con[10], ctl_reset | phy_reset);
udelay(1);
- rk_clrreg(&cru->softrst_con[10], ctl_reset | phy_reset);
+ rk_clrreg(&cru->softrst_con[10], phy_reset);
+ udelay(5);
+ rk_clrreg(&cru->softrst_con[10], ctl_reset);
}

static void ddrphy_reset(struct rk3368_ddrphy *ddrphy)
{
+ /*
+ * phy de-reset should de-reset analog part before
+ * digital part abort 1000 dram cycle.
+ */
clrbits_le32(&ddrphy->reg[0], BIT(3) | BIT(2));
udelay(1);
- setbits_le32(&ddrphy->reg[0], BIT(3) | BIT(2));
+ setbits_le32(&ddrphy->reg[0], BIT(2));
+ udelay(5);
+ setbits_le32(&ddrphy->reg[0], BIT(3));
}

@@ -984,7 +992,6 @@ U_BOOT_DRIVER(dmc_rk3368) = {
.probe = rk3368_dmc_probe,
.priv_auto_alloc_size = sizeof(struct dram_info),
.ofdata_to_platdata = rk3368_dmc_ofdata_to_platdata,
- .probe = rk3368_dmc_probe,
.priv_auto_alloc_size = sizeof(struct dram_info),
.platdata_auto_alloc_size = sizeof(struct rk3368_sdram_params),
};

Thanks

--------------
汤云平
福州瑞芯微电子有限公司
Fuzhou Rockchip Electronics Co.Ltd
福建省福州市铜盘路软件大道89号软件园A区21号楼 (350003)
No. 21 Building, A District, No.89,software Boulevard Fuzhou,Fujian,PRC
mail: typ at rock-chips.com
phone of Fuzhou：0591－83991906/07 -8884
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--------------------------------------------------------

From: Andy Yan
Date: 2017-08-01 09:30
To: Philipp Tomsich; u-boot
CC: Kever Yang; Klaus Goger; Simon Glass; Andreas Färber; Álvaro Fernández Rojas; Albert Aribaud; Vikas Manocha; Joe Hershberger; tony.tang
Subject: Re: [PATCH v3 50/66] rockchip: rk3368: add DRAM controller driver with DRAM initialisation
add Tony from our dram team, maybe he has some ideas for this patch.

On 2017年07月29日 03:22, Philipp Tomsich wrote:
> This adds a DRAM controller driver for the RK3368 and places it in
> drivers/ram/rockchip (where the other DM-enabled DRAM controller
> drivers for rockchip devices should also be moved eventually).
>
> At this stage, only the following feature-set is supported:
> - DDR3
> - 32-bit configuration (i.e. fully populated)
> - dual-rank (i.e. no auto-detection of ranks)
> - DDR3-1600K speed-bin
>
> This driver expects to run from a TPL stage that will later return to
> the RK3368 BROM. It communicates with later stages through the
> os_reg2 in the pmugrf (i.e. using the same mechanism as Rockchip's DDR
> init code).
>
> Unlike other DMC drivers for RK32xx and RK33xx parts, the required
> timings are calculated within the driver based on a target frequency
> and a DDR3 speed-bin (only the DDR3-1600K speed-bin is support at this
> time).
>
> The RK3368 also has the DDRC0_CON0 (DDR ch. 0, control-register 0)
> register for controlling the operation of its (single-channel) DRAM
> controller in the GRF block. This provides for selecting DDR3, mobile
> DDR modes, and control low-power operation.
> As part of this change, DDRC0_CON0 is also added to the GRF structure
> definition (at offset 0x600).
>
> Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
>
> Reviewed-by: Simon Glass <sjg@chromium.org>
> ---
>
> Changes in v3:
> - correctly states the location of the driver in the commit message
>
> Changes in v2: None
>
> arch/arm/include/asm/arch-rockchip/ddr_rk3368.h | 187 ++++
> arch/arm/include/asm/arch-rockchip/grf_rk3368.h | 3 +
> arch/arm/mach-rockchip/rk3368/Makefile | 1 -
> arch/arm/mach-rockchip/rk3368/sdram_rk3368.c | 60 --
> .../clock/rockchip,rk3368-dmc.txt | 67 ++
> drivers/ram/Makefile | 2 +
> drivers/ram/rockchip/Makefile | 7 +
> drivers/ram/rockchip/dmc-rk3368.c | 990 +++++++++++++++++++++
> include/dt-bindings/memory/rk3368-dmc.h | 30 +
> 9 files changed, 1286 insertions(+), 61 deletions(-)
> create mode 100644 arch/arm/include/asm/arch-rockchip/ddr_rk3368.h
> delete mode 100644 arch/arm/mach-rockchip/rk3368/sdram_rk3368.c
> create mode 100644 doc/device-tree-bindings/clock/rockchip,rk3368-dmc.txt
> create mode 100644 drivers/ram/rockchip/Makefile
> create mode 100644 drivers/ram/rockchip/dmc-rk3368.c
> create mode 100644 include/dt-bindings/memory/rk3368-dmc.h
>
> diff --git a/arch/arm/include/asm/arch-rockchip/ddr_rk3368.h b/arch/arm/include/asm/arch-rockchip/ddr_rk3368.h
> new file mode 100644
> index 0000000..4e2b233
> --- /dev/null
> +++ b/arch/arm/include/asm/arch-rockchip/ddr_rk3368.h
> @@ -0,0 +1,187 @@
> +/*
> + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#ifndef __ASM_ARCH_DDR_RK3368_H__
> +#define __ASM_ARCH_DDR_RK3368_H__
> +
> +/*
> + * The RK3368 DDR PCTL differs from the incarnation in the RK3288 only
> + * in a few details. Most notably, it has an additional field to track
> + * tREFI in controller cycles (i.e. trefi_mem_ddr3).
> + */
> +struct rk3368_ddr_pctl {
> + u32 scfg;
> + u32 sctl;
> + u32 stat;
> + u32 intrstat;
> + u32 reserved0[12];
> + u32 mcmd;
> + u32 powctl;
> + u32 powstat;
> + u32 cmdtstat;
> + u32 cmdtstaten;
> + u32 reserved1[3];
> + u32 mrrcfg0;
> + u32 mrrstat0;
> + u32 mrrstat1;
> + u32 reserved2[4];
> + u32 mcfg1;
> + u32 mcfg;
> + u32 ppcfg;
> + u32 mstat;
> + u32 lpddr2zqcfg;
> + u32 reserved3;
> + u32 dtupdes;
> + u32 dtuna;
> + u32 dtune;
> + u32 dtuprd0;
> + u32 dtuprd1;
> + u32 dtuprd2;
> + u32 dtuprd3;
> + u32 dtuawdt;
> + u32 reserved4[3];
> + u32 togcnt1u;
> + u32 tinit;
> + u32 trsth;
> + u32 togcnt100n;
> + u32 trefi;
> + u32 tmrd;
> + u32 trfc;
> + u32 trp;
> + u32 trtw;
> + u32 tal;
> + u32 tcl;
> + u32 tcwl;
> + u32 tras;
> + u32 trc;
> + u32 trcd;
> + u32 trrd;
> + u32 trtp;
> + u32 twr;
> + u32 twtr;
> + u32 texsr;
> + u32 txp;
> + u32 txpdll;
> + u32 tzqcs;
> + u32 tzqcsi;
> + u32 tdqs;
> + u32 tcksre;
> + u32 tcksrx;
> + u32 tcke;
> + u32 tmod;
> + u32 trstl;
> + u32 tzqcl;
> + u32 tmrr;
> + u32 tckesr;
> + u32 tdpd;
> + u32 trefi_mem_ddr3;
> + u32 reserved5[45];
> + u32 dtuwactl;
> + u32 dturactl;
> + u32 dtucfg;
> + u32 dtuectl;
> + u32 dtuwd0;
> + u32 dtuwd1;
> + u32 dtuwd2;
> + u32 dtuwd3;
> + u32 dtuwdm;
> + u32 dturd0;
> + u32 dturd1;
> + u32 dturd2;
> + u32 dturd3;
> + u32 dtulfsrwd;
> + u32 dtulfsrrd;
> + u32 dtueaf;
> + u32 dfitctrldelay;
> + u32 dfiodtcfg;
> + u32 dfiodtcfg1;
> + u32 dfiodtrankmap;
> + u32 dfitphywrdata;
> + u32 dfitphywrlat;
> + u32 reserved7[2];
> + u32 dfitrddataen;
> + u32 dfitphyrdlat;
> + u32 reserved8[2];
> + u32 dfitphyupdtype0;
> + u32 dfitphyupdtype1;
> + u32 dfitphyupdtype2;
> + u32 dfitphyupdtype3;
> + u32 dfitctrlupdmin;
> + u32 dfitctrlupdmax;
> + u32 dfitctrlupddly;
> + u32 reserved9;
> + u32 dfiupdcfg;
> + u32 dfitrefmski;
> + u32 dfitctrlupdi;
> + u32 reserved10[4];
> + u32 dfitrcfg0;
> + u32 dfitrstat0;
> + u32 dfitrwrlvlen;
> + u32 dfitrrdlvlen;
> + u32 dfitrrdlvlgateen;
> + u32 dfiststat0;
> + u32 dfistcfg0;
> + u32 dfistcfg1;
> + u32 reserved11;
> + u32 dfitdramclken;
> + u32 dfitdramclkdis;
> + u32 dfistcfg2;
> + u32 dfistparclr;
> + u32 dfistparlog;
> + u32 reserved12[3];
> + u32 dfilpcfg0;
> + u32 reserved13[3];
> + u32 dfitrwrlvlresp0;
> + u32 dfitrwrlvlresp1;
> + u32 dfitrwrlvlresp2;
> + u32 dfitrrdlvlresp0;
> + u32 dfitrrdlvlresp1;
> + u32 dfitrrdlvlresp2;
> + u32 dfitrwrlvldelay0;
> + u32 dfitrwrlvldelay1;
> + u32 dfitrwrlvldelay2;
> + u32 dfitrrdlvldelay0;
> + u32 dfitrrdlvldelay1;
> + u32 dfitrrdlvldelay2;
> + u32 dfitrrdlvlgatedelay0;
> + u32 dfitrrdlvlgatedelay1;
> + u32 dfitrrdlvlgatedelay2;
> + u32 dfitrcmd;
> + u32 reserved14[46];
> + u32 ipvr;
> + u32 iptr;
> +};
> +check_member(rk3368_ddr_pctl, iptr, 0x03fc);
> +
> +struct rk3368_ddrphy {
> + u32 reg[0x100];
> +};
> +check_member(rk3368_ddrphy, reg[0xff], 0x03fc);
> +
> +struct rk3368_msch {
> + u32 coreid;
> + u32 revisionid;
> + u32 ddrconf;
> + u32 ddrtiming;
> + u32 ddrmode;
> + u32 readlatency;
> + u32 reserved1[8];
> + u32 activate;
> + u32 devtodev;
> +};
> +check_member(rk3368_msch, devtodev, 0x003c);
> +
> +/* GRF_SOC_CON0 */
> +enum {
> + NOC_RSP_ERR_STALL = BIT(9),
> + MOBILE_DDR_SEL = BIT(4),
> + DDR0_16BIT_EN = BIT(3),
> + MSCH0_MAINDDR3_DDR3 = BIT(2),
> + MSCH0_MAINPARTIALPOP = BIT(1),
> + UPCTL_C_ACTIVE = BIT(0),
> +};
> +
> +#endif
> diff --git a/arch/arm/include/asm/arch-rockchip/grf_rk3368.h b/arch/arm/include/asm/arch-rockchip/grf_rk3368.h
> index 1f84ff9..6b6651a 100644
> --- a/arch/arm/include/asm/arch-rockchip/grf_rk3368.h
> +++ b/arch/arm/include/asm/arch-rockchip/grf_rk3368.h
> @@ -76,8 +76,11 @@ struct rk3368_grf {
> u32 soc_con15;
> u32 soc_con16;
> u32 soc_con17;
> + u32 reserved5[0x6e];
> + u32 ddrc0_con0;
> };
> check_member(rk3368_grf, soc_con17, 0x444);
> +check_member(rk3368_grf, ddrc0_con0, 0x600);
>
> struct rk3368_pmu_grf {
> u32 gpio0a_iomux;
> diff --git a/arch/arm/mach-rockchip/rk3368/Makefile b/arch/arm/mach-rockchip/rk3368/Makefile
> index 0390716..46798c2 100644
> --- a/arch/arm/mach-rockchip/rk3368/Makefile
> +++ b/arch/arm/mach-rockchip/rk3368/Makefile
> @@ -5,5 +5,4 @@
> #
> obj-y += clk_rk3368.o
> obj-y += rk3368.o
> -obj-y += sdram_rk3368.o
> obj-y += syscon_rk3368.o
> diff --git a/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c b/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c
> deleted file mode 100644
> index d0d0900..0000000
> --- a/arch/arm/mach-rockchip/rk3368/sdram_rk3368.c
> +++ /dev/null
> @@ -1,60 +0,0 @@
> -/*
> - * (C) Copyright 2016 Rockchip Electronics Co., Ltd.
> - *
> - * SPDX-License-Identifier: GPL-2.0
> - */
> -
> -#include <common.h>
> -#include <dm.h>
> -#include <ram.h>
> -#include <syscon.h>
> -#include <asm/arch/clock.h>
> -#include <asm/arch/grf_rk3368.h>
> -#include <asm/arch/sdram_common.h>
> -
> -DECLARE_GLOBAL_DATA_PTR;
> -struct dram_info {
> - struct ram_info info;
> - struct rk3368_pmu_grf *pmugrf;
> -};
> -
> -static int rk3368_dmc_probe(struct udevice *dev)
> -{
> - struct dram_info *priv = dev_get_priv(dev);
> -
> - priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
> - debug("%s: grf=%p\n", __func__, priv->pmugrf);
> - priv->info.base = CONFIG_SYS_SDRAM_BASE;
> - priv->info.size = rockchip_sdram_size(
> - (phys_addr_t)&priv->pmugrf->os_reg[2]);
> -
> - return 0;
> -}
> -
> -static int rk3368_dmc_get_info(struct udevice *dev, struct ram_info *info)
> -{
> - struct dram_info *priv = dev_get_priv(dev);
> -
> - *info = priv->info;
> -
> - return 0;
> -}
> -
> -static struct ram_ops rk3368_dmc_ops = {
> - .get_info = rk3368_dmc_get_info,
> -};
> -
> -
> -static const struct udevice_id rk3368_dmc_ids[] = {
> - { .compatible = "rockchip,rk3368-dmc" },
> - { }
> -};
> -
> -U_BOOT_DRIVER(dmc_rk3368) = {
> - .name = "rockchip_rk3368_dmc",
> - .id = UCLASS_RAM,
> - .of_match = rk3368_dmc_ids,
> - .ops = &rk3368_dmc_ops,
> - .probe = rk3368_dmc_probe,
> - .priv_auto_alloc_size = sizeof(struct dram_info),
> -};
> diff --git a/doc/device-tree-bindings/clock/rockchip,rk3368-dmc.txt b/doc/device-tree-bindings/clock/rockchip,rk3368-dmc.txt
> new file mode 100644
> index 0000000..8e7357d
> --- /dev/null
> +++ b/doc/device-tree-bindings/clock/rockchip,rk3368-dmc.txt
> @@ -0,0 +1,67 @@
> +RK3368 dynamic memory controller driver
> +=======================================
> +
> +The RK3368 DMC (dynamic memory controller) driver supports setup/initialisation
> +during TPL using configuration data from the DTS (i.e. OF_PLATDATA), based on
> +the following key configuration data:
> + (a) a target-frequency (i.e. operating point) for the memory operation
> + (b) a speed-bin (as defined in JESD-79) for the DDR3 used in hardware
> + (c) a memory-schedule (i.e. mapping from physical addresses to the address
> + pins of the memory bus)
> +
> +Required properties
> +-------------------
> +
> +- compatible: "rockchip,rk3368-dmc"
> +- reg
> + protocol controller (PCTL) address and PHY controller (DDRPHY) address
> +- rockchip,ddr-speed-bin
> + the DDR3 device's speed-bin (as specified according to JESD-79)
> + DDR3_800D (5-5-5)
> + DDR3_800E (6-6-6)
> + DDR3_1066E (6-6-6)
> + DDR3_1066F (7-7-7)
> + DDR3_1066G (8-8-8)
> + DDR3_1333F (7-7-7)
> + DDR3_1333G (8-8-8)
> + DDR3_1333H (9-9-9)
> + DDR3_1333J (10-10-10)
> + DDR3_1600G (8-8-8)
> + DDR3_1600H (9-9-9)
> + DDR3_1600J (10-10-10)
> + DDR3_1600K (11-11-11)
> + DDR3_1866J (10-10-10)
> + DDR3_1866K (11-11-11)
> + DDR3_1866L (12-12-12)
> + DDR3_1866M (13-13-13)
> + DDR3_2133K (11-11-11)
> + DDR3_2133L (12-12-12)
> + DDR3_2133M (13-13-13)
> + DDR3_2133N (14-14-14)
> +- rockchip,ddr-frequency:
> + target DDR clock frequency in Hz (not all frequencies may be supported,
> + as there's some cooperation from the clock-driver required)
> +- rockchip,memory-schedule:
> + controls the decoding of physical addresses to DRAM addressing (i.e. how
> + the physical address maps onto the address pins/chip-select of the device)
> + DMC_MSCH_CBDR: column -> bank -> device -> row
> + DMC_MSCH_CBRD: column -> band -> row -> device
> + DMC_MSCH_CRBD: column -> row -> band -> device
> +
> +Example (for DDR3-1600K and 800MHz)
> +-----------------------------------
> +
> + #include <dt-bindings/memory/rk3368-dmc.h>
> +
> + dmc: dmc at ff610000 {
> + u-boot,dm-pre-reloc;
> + compatible = "rockchip,rk3368-dmc";
> + reg = <0 0xff610000 0 0x400
> + 0 0xff620000 0 0x400>;
> + };
> +
> + &dmc {
> + rockchip,ddr-speed-bin = <DDR3_1600K>;
> + rockchip,ddr-frequency = <800000000>;
> + rockchip,memory-schedule = <DMC_MSCH_CBRD>;
> + };
> diff --git a/drivers/ram/Makefile b/drivers/ram/Makefile
> index c409c48..51ae6be 100644
> --- a/drivers/ram/Makefile
> +++ b/drivers/ram/Makefile
> @@ -8,3 +8,5 @@ obj-$(CONFIG_RAM) += ram-uclass.o
> obj-$(CONFIG_SANDBOX) += sandbox_ram.o
> obj-$(CONFIG_STM32_SDRAM) += stm32_sdram.o
> obj-$(CONFIG_ARCH_BMIPS) += bmips_ram.o
> +
> +obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
> diff --git a/drivers/ram/rockchip/Makefile b/drivers/ram/rockchip/Makefile
> new file mode 100644
> index 0000000..b09d03c
> --- /dev/null
> +++ b/drivers/ram/rockchip/Makefile
> @@ -0,0 +1,7 @@
> +#
> +# Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
> +#
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +
> +obj-$(CONFIG_ROCKCHIP_RK3368) = dmc-rk3368.o
> diff --git a/drivers/ram/rockchip/dmc-rk3368.c b/drivers/ram/rockchip/dmc-rk3368.c
> new file mode 100644
> index 0000000..fea96a5
> --- /dev/null
> +++ b/drivers/ram/rockchip/dmc-rk3368.c
> @@ -0,0 +1,990 @@
> +/*
> + * (C) Copyright 2017 Theobroma Systems Design und Consulting GmbH
> + *
> + * SPDX-License-Identifier: GPL-2.0
> + */
> +
> +#include <common.h>
> +#include <clk.h>
> +#include <dm.h>
> +#include <dt-bindings/memory/rk3368-dmc.h>
> +#include <dt-structs.h>
> +#include <ram.h>
> +#include <regmap.h>
> +#include <syscon.h>
> +#include <asm/io.h>
> +#include <asm/arch/clock.h>
> +#include <asm/arch/cru_rk3368.h>
> +#include <asm/arch/grf_rk3368.h>
> +#include <asm/arch/ddr_rk3368.h>
> +#include <asm/arch/sdram.h>
> +#include <asm/arch/sdram_common.h>
> +
> +DECLARE_GLOBAL_DATA_PTR;
> +
> +struct dram_info {
> + struct ram_info info;
> + struct clk ddr_clk;
> + struct rk3368_cru *cru;
> + struct rk3368_grf *grf;
> + struct rk3368_ddr_pctl *pctl;
> + struct rk3368_ddrphy *phy;
> + struct rk3368_pmu_grf *pmugrf;
> + struct rk3368_msch *msch;
> +};
> +
> +struct rk3368_sdram_params {
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> + struct dtd_rockchip_rk3368_dmc of_plat;
> +#endif
> + struct rk3288_sdram_pctl_timing pctl_timing;
> + u32 trefi_mem_ddr3;
> + struct rk3288_sdram_channel chan;
> + struct regmap *map;
> + u32 ddr_freq;
> + u32 memory_schedule;
> + u32 ddr_speed_bin;
> + u32 tfaw_mult;
> +};
> +
> +/* PTCL bits */
> +enum {
> + /* PCTL_DFISTCFG0 */
> + DFI_INIT_START = BIT(0),
> + DFI_DATA_BYTE_DISABLE_EN = BIT(2),
> +
> + /* PCTL_DFISTCFG1 */
> + DFI_DRAM_CLK_SR_EN = BIT(0),
> + DFI_DRAM_CLK_DPD_EN = BIT(1),
> + ODT_LEN_BL8_W_SHIFT = 16,
> +
> + /* PCTL_DFISTCFG2 */
> + DFI_PARITY_INTR_EN = BIT(0),
> + DFI_PARITY_EN = BIT(1),
> +
> + /* PCTL_DFILPCFG0 */
> + TLP_RESP_TIME_SHIFT = 16,
> + LP_SR_EN = BIT(8),
> + LP_PD_EN = BIT(0),
> +
> + /* PCTL_DFIODTCFG */
> + RANK0_ODT_WRITE_SEL = BIT(3),
> + RANK1_ODT_WRITE_SEL = BIT(11),
> +
> + /* PCTL_SCFG */
> + HW_LOW_POWER_EN = BIT(0),
> +
> + /* PCTL_MCMD */
> + START_CMD = BIT(31),
> + MCMD_RANK0 = BIT(20),
> + MCMD_RANK1 = BIT(21),
> + DESELECT_CMD = 0,
> + PREA_CMD,
> + REF_CMD,
> + MRS_CMD,
> + ZQCS_CMD,
> + ZQCL_CMD,
> + RSTL_CMD,
> + MRR_CMD = 8,
> + DPDE_CMD,
> +
> + /* PCTL_POWCTL */
> + POWER_UP_START = BIT(0),
> +
> + /* PCTL_POWSTAT */
> + POWER_UP_DONE = BIT(0),
> +
> + /* PCTL_SCTL */
> + INIT_STATE = 0,
> + CFG_STATE,
> + GO_STATE,
> + SLEEP_STATE,
> + WAKEUP_STATE,
> +
> + /* PCTL_STAT */
> + LP_TRIG_SHIFT = 4,
> + LP_TRIG_MASK = 7,
> + PCTL_STAT_MSK = 7,
> + INIT_MEM = 0,
> + CONFIG,
> + CONFIG_REQ,
> + ACCESS,
> + ACCESS_REQ,
> + LOW_POWER,
> + LOW_POWER_ENTRY_REQ,
> + LOW_POWER_EXIT_REQ,
> +
> + /* PCTL_MCFG */
> + DDR2_DDR3_BL_8 = BIT(0),
> + DDR3_EN = BIT(5),
> + TFAW_TRRD_MULT4 = (0 << 18),
> + TFAW_TRRD_MULT5 = (1 << 18),
> + TFAW_TRRD_MULT6 = (2 << 18),
> +};
> +
> +#define DDR3_MR0_WR(n) \
> + ((n <= 8) ? ((n - 4) << 9) : (((n >> 1) & 0x7) << 9))
> +#define DDR3_MR0_CL(n) \
> + ((((n - 4) & 0x7) << 4) | (((n - 4) & 0x8) >> 2))
> +#define DDR3_MR0_BL8 \
> + (0 << 0)
> +#define DDR3_MR0_DLL_RESET \
> + (1 << 8)
> +#define DDR3_MR1_RTT120OHM \
> + ((0 << 9) | (1 << 6) | (0 << 2))
> +#define DDR3_MR2_TWL(n) \
> + (((n - 5) & 0x7) << 3)
> +
> +
> +#ifdef CONFIG_TPL_BUILD
> +
> +static void ddr_set_noc_spr_err_stall(struct rk3368_grf *grf, bool enable)
> +{
> + if (enable)
> + rk_setreg(&grf->ddrc0_con0, NOC_RSP_ERR_STALL);
> + else
> + rk_clrreg(&grf->ddrc0_con0, NOC_RSP_ERR_STALL);
> +}
> +
> +static void ddr_set_ddr3_mode(struct rk3368_grf *grf, bool ddr3_mode)
> +{
> + if (ddr3_mode)
> + rk_setreg(&grf->ddrc0_con0, MSCH0_MAINDDR3_DDR3);
> + else
> + rk_clrreg(&grf->ddrc0_con0, MSCH0_MAINDDR3_DDR3);
> +}
> +
> +static void ddrphy_config(struct rk3368_ddrphy *phy,
> + u32 tcl, u32 tal, u32 tcwl)
> +{
> + int i;
> +
> + /* Set to DDR3 mode */
> + clrsetbits_le32(&phy->reg[1], 0x3, 0x0);
> +
> + /* DDRPHY_REGB: CL, AL */
> + clrsetbits_le32(&phy->reg[0xb], 0xff, tcl << 4 | tal);
> + /* DDRPHY_REGC: CWL */
> + clrsetbits_le32(&phy->reg[0xc], 0x0f, tcwl);
> +
> + /* Update drive-strength */
> + writel(0xcc, &phy->reg[0x11]);
> + writel(0xaa, &phy->reg[0x16]);
> + /*
> + * Update NRCOMP/PRCOMP for all 4 channels (for details of all
> + * affected registers refer to the documentation of DDRPHY_REG20
> + * and DDRPHY_REG21 in the RK3368 TRM.
> + */
> + for (i = 0; i < 4; ++i) {
> + writel(0xcc, &phy->reg[0x20 + i * 0x10]);
> + writel(0x44, &phy->reg[0x21 + i * 0x10]);
> + }
> +
> + /* Enable write-leveling calibration bypass */
> + setbits_le32(&phy->reg[2], BIT(3));
> +}
> +
> +static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
> +{
> + int i;
> +
> + for (i = 0; i < n / sizeof(u32); i++)
> + writel(*src++, dest++);
> +}
> +
> +static void send_command(struct rk3368_ddr_pctl *pctl, u32 rank, u32 cmd)
> +{
> + u32 mcmd = START_CMD | cmd | rank;
> +
> + debug("%s: writing %x to MCMD\n", __func__, mcmd);
> + writel(mcmd, &pctl->mcmd);
> + while (readl(&pctl->mcmd) & START_CMD)
> + /* spin */;
> +}
> +
> +static void send_mrs(struct rk3368_ddr_pctl *pctl,
> + u32 rank, u32 mr_num, u32 mr_data)
> +{
> + u32 mcmd = START_CMD | MRS_CMD | rank | (mr_num << 17) | (mr_data << 4);
> +
> + debug("%s: writing %x to MCMD\n", __func__, mcmd);
> + writel(mcmd, &pctl->mcmd);
> + while (readl(&pctl->mcmd) & START_CMD)
> + /* spin */;
> +}
> +
> +static int memory_init(struct rk3368_ddr_pctl *pctl,
> + struct rk3368_sdram_params *params)
> +{
> + u32 mr[4];
> + const ulong timeout_ms = 500;
> + ulong tmp;
> +
> + /*
> + * Power up DRAM by DDR_PCTL_POWCTL[0] register of PCTL and
> + * wait power up DRAM finish with DDR_PCTL_POWSTAT[0] register
> + * of PCTL.
> + */
> + writel(POWER_UP_START, &pctl->powctl);
> +
> + tmp = get_timer(0);
> + do {
> + if (get_timer(tmp) > timeout_ms) {
> + error("%s: POWER_UP_START did not complete in %ld ms\n",
> + __func__, timeout_ms);
> + return -ETIME;
> + }
> + } while (!(readl(&pctl->powstat) & POWER_UP_DONE));
> +
> + /* Configure MR0 through MR3 */
> + mr[0] = DDR3_MR0_WR(params->pctl_timing.twr) |
> + DDR3_MR0_CL(params->pctl_timing.tcl) |
> + DDR3_MR0_DLL_RESET;
> + mr[1] = DDR3_MR1_RTT120OHM;
> + mr[2] = DDR3_MR2_TWL(params->pctl_timing.tcwl);
> + mr[3] = 0;
> +
> + /*
> + * Also see RK3368 Technical Reference Manual:
> + * "16.6.2 Initialization (DDR3 Initialization Sequence)"
> + */
> + send_command(pctl, MCMD_RANK0 | MCMD_RANK1, DESELECT_CMD);
> + udelay(1);
> + send_command(pctl, MCMD_RANK0 | MCMD_RANK1, PREA_CMD);
> + send_mrs(pctl, MCMD_RANK0 | MCMD_RANK1, 2, mr[2]);
> + send_mrs(pctl, MCMD_RANK0 | MCMD_RANK1, 3, mr[3]);
> + send_mrs(pctl, MCMD_RANK0 | MCMD_RANK1, 1, mr[1]);
> + send_mrs(pctl, MCMD_RANK0 | MCMD_RANK1, 0, mr[0]);
> + send_command(pctl, MCMD_RANK0 | MCMD_RANK1, ZQCL_CMD);
> +
> + return 0;
> +}
> +
> +static void move_to_config_state(struct rk3368_ddr_pctl *pctl)
> +{
> + /*
> + * Also see RK3368 Technical Reference Manual:
> + * "16.6.1 State transition of PCTL (Moving to Config State)"
> + */
> + u32 state = readl(&pctl->stat) & PCTL_STAT_MSK;
> +
> + switch (state) {
> + case LOW_POWER:
> + writel(WAKEUP_STATE, &pctl->sctl);
> + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS)
> + /* spin */;
> +
> + /* fall-through */
> + case ACCESS:
> + case INIT_MEM:
> + writel(CFG_STATE, &pctl->sctl);
> + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
> + /* spin */;
> + break;
> +
> + case CONFIG:
> + return;
> +
> + default:
> + break;
> + }
> +}
> +
> +static void move_to_access_state(struct rk3368_ddr_pctl *pctl)
> +{
> + /*
> + * Also see RK3368 Technical Reference Manual:
> + * "16.6.1 State transition of PCTL (Moving to Access State)"
> + */
> + u32 state = readl(&pctl->stat) & PCTL_STAT_MSK;
> +
> + switch (state) {
> + case LOW_POWER:
> + if (((readl(&pctl->stat) >> LP_TRIG_SHIFT) &
> + LP_TRIG_MASK) == 1)
> + return;
> +
> + writel(WAKEUP_STATE, &pctl->sctl);
> + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS)
> + /* spin */;
> +
> + /* fall-through */
> + case INIT_MEM:
> + writel(CFG_STATE, &pctl->sctl);
> + while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
> + /* spin */;
> +
> + /* fall-through */
> + case CONFIG:
> + writel(GO_STATE, &pctl->sctl);
> + while ((readl(&pctl->stat) & PCTL_STAT_MSK) == CONFIG)
> + /* spin */;
> + break;
> +
> + case ACCESS:
> + return;
> +
> + default:
> + break;
> + }
> +}
> +
> +static void ddrctl_reset(struct rk3368_cru *cru)
> +{
> + const u32 ctl_reset = BIT(3) | BIT(2);
> + const u32 phy_reset = BIT(1) | BIT(0);
> +
> + rk_setreg(&cru->softrst_con[10], ctl_reset | phy_reset);
> + udelay(1);
> + rk_clrreg(&cru->softrst_con[10], ctl_reset | phy_reset);
> +}
> +
> +static void ddrphy_reset(struct rk3368_ddrphy *ddrphy)
> +{
> + clrbits_le32(&ddrphy->reg[0], BIT(3) | BIT(2));
> + udelay(1);
> + setbits_le32(&ddrphy->reg[0], BIT(3) | BIT(2));
> +}
> +
> +static void ddrphy_config_delays(struct rk3368_ddrphy *ddrphy, u32 freq)
> +{
> + u32 dqs_dll_delay;
> +
> + setbits_le32(&ddrphy->reg[0x13], BIT(4));
> + clrbits_le32(&ddrphy->reg[0x14], BIT(3));
> +
> + setbits_le32(&ddrphy->reg[0x26], BIT(4));
> + clrbits_le32(&ddrphy->reg[0x27], BIT(3));
> +
> + setbits_le32(&ddrphy->reg[0x36], BIT(4));
> + clrbits_le32(&ddrphy->reg[0x37], BIT(3));
> +
> + setbits_le32(&ddrphy->reg[0x46], BIT(4));
> + clrbits_le32(&ddrphy->reg[0x47], BIT(3));
> +
> + setbits_le32(&ddrphy->reg[0x56], BIT(4));
> + clrbits_le32(&ddrphy->reg[0x57], BIT(3));
> +
> + if (freq <= 400000000)
> + setbits_le32(&ddrphy->reg[0xa4], 0x1f);
> + else
> + clrbits_le32(&ddrphy->reg[0xa4], 0x1f);
> +
> + if (freq < 681000000)
> + dqs_dll_delay = 3; /* 67.5 degree delay */
> + else
> + dqs_dll_delay = 2; /* 45 degree delay */
> +
> + writel(dqs_dll_delay, &ddrphy->reg[0x28]);
> + writel(dqs_dll_delay, &ddrphy->reg[0x38]);
> + writel(dqs_dll_delay, &ddrphy->reg[0x48]);
> + writel(dqs_dll_delay, &ddrphy->reg[0x58]);
> +}
> +
> +static int dfi_cfg(struct rk3368_ddr_pctl *pctl)
> +{
> + const ulong timeout_ms = 200;
> + ulong tmp;
> +
> + writel(DFI_DATA_BYTE_DISABLE_EN, &pctl->dfistcfg0);
> +
> + writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN,
> + &pctl->dfistcfg1);
> + writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2);
> + writel(7 << TLP_RESP_TIME_SHIFT | LP_SR_EN | LP_PD_EN,
> + &pctl->dfilpcfg0);
> +
> + writel(1, &pctl->dfitphyupdtype0);
> +
> + writel(0x1f, &pctl->dfitphyrdlat);
> + writel(0, &pctl->dfitphywrdata);
> + writel(0, &pctl->dfiupdcfg); /* phyupd and ctrlupd disabled */
> +
> + setbits_le32(&pctl->dfistcfg0, DFI_INIT_START);
> +
> + tmp = get_timer(0);
> + do {
> + if (get_timer(tmp) > timeout_ms) {
> + error("%s: DFI init did not complete within %ld ms\n",
> + __func__, timeout_ms);
> + return -ETIME;
> + }
> + } while ((readl(&pctl->dfiststat0) & 1) == 0);
> +
> + return 0;
> +}
> +
> +static inline u32 ps_to_tCK(const u32 ps, const ulong freq)
> +{
> + const ulong MHz = 1000000;
> + return DIV_ROUND_UP(ps * freq, 1000000 * MHz);
> +}
> +
> +static inline u32 ns_to_tCK(const u32 ns, const ulong freq)
> +{
> + return ps_to_tCK(ns * 1000, freq);
> +}
> +
> +static inline u32 tCK_to_ps(const ulong tCK, const ulong freq)
> +{
> + const ulong MHz = 1000000;
> + return DIV_ROUND_UP(tCK * 1000000 * MHz, freq);
> +}
> +
> +static int pctl_calc_timings(struct rk3368_sdram_params *params,
> + ulong freq)
> +{
> + struct rk3288_sdram_pctl_timing *pctl_timing = &params->pctl_timing;
> + const ulong MHz = 1000000;
> + u32 tccd;
> + u32 tfaw_as_ps;
> +
> + if (params->ddr_speed_bin != DDR3_1600K) {
> + error("%s: unimplemented DDR3 speed bin %d\n",
> + __func__, params->ddr_speed_bin);
> + return -1;
> + }
> +
> + /* PCTL is clocked at 1/2 the DRAM clock; err on the side of caution */
> + pctl_timing->togcnt1u = DIV_ROUND_UP(freq, 2 * MHz);
> + pctl_timing->togcnt100n = DIV_ROUND_UP(freq / 10, 2 * MHz);
> +
> + pctl_timing->tinit = 200; /* 200 usec */
> + pctl_timing->trsth = 500; /* 500 usec */
> + pctl_timing->trefi = 78; /* 7.8usec = 78 * 100ns */
> + params->trefi_mem_ddr3 = ns_to_tCK(pctl_timing->trefi * 100, freq);
> +
> + if (freq <= (400 * MHz)) {
> + pctl_timing->tcl = 6;
> + pctl_timing->tcwl = 10;
> + } else if (freq <= (533 * MHz)) {
> + pctl_timing->tcl = 8;
> + pctl_timing->tcwl = 6;
> + } else if (freq <= (666 * MHz)) {
> + pctl_timing->tcl = 10;
> + pctl_timing->tcwl = 7;
> + } else {
> + pctl_timing->tcl = 11;
> + pctl_timing->tcwl = 8;
> + }
> +
> + pctl_timing->tmrd = 4; /* 4 tCK (all speed bins) */
> + pctl_timing->trfc = ns_to_tCK(350, freq); /* tRFC: 350 (max) @ 8GBit */
> + pctl_timing->trp = max(4u, ps_to_tCK(13750, freq));
> + /*
> + * JESD-79:
> + * READ to WRITE Command Delay = RL + tCCD / 2 + 2tCK - WL
> + */
> + tccd = 4;
> + pctl_timing->trtw = pctl_timing->tcl + tccd/2 + 2 - pctl_timing->tcwl;
> + pctl_timing->tal = 0;
> + pctl_timing->tras = ps_to_tCK(35000, freq);
> + pctl_timing->trc = ps_to_tCK(48750, freq);
> + pctl_timing->trcd = ps_to_tCK(13750, freq);
> + pctl_timing->trrd = max(4u, ps_to_tCK(7500, freq));
> + pctl_timing->trtp = max(4u, ps_to_tCK(7500, freq));
> + pctl_timing->twr = ps_to_tCK(15000, freq);
> + /* The DDR3 mode-register does only support even values for tWR > 8. */
> + if (pctl_timing->twr > 8)
> + pctl_timing->twr = (pctl_timing->twr + 1) & ~1;
> + pctl_timing->twtr = max(4u, ps_to_tCK(7500, freq));
> + pctl_timing->texsr = 512; /* tEXSR(max) is tDLLLK */
> + pctl_timing->txp = max(3u, ps_to_tCK(6000, freq));
> + pctl_timing->txpdll = max(10u, ps_to_tCK(24000, freq));
> + pctl_timing->tzqcs = max(64u, ps_to_tCK(80000, freq));
> + pctl_timing->tzqcsi = 10000; /* as used by Rockchip */
> + pctl_timing->tdqs = 1; /* fixed for DDR3 */
> + pctl_timing->tcksre = max(5u, ps_to_tCK(10000, freq));
> + pctl_timing->tcksrx = max(5u, ps_to_tCK(10000, freq));
> + pctl_timing->tcke = max(3u, ps_to_tCK(5000, freq));
> + pctl_timing->tmod = max(12u, ps_to_tCK(15000, freq));
> + pctl_timing->trstl = ns_to_tCK(100, freq);
> + pctl_timing->tzqcl = max(256u, ps_to_tCK(320000, freq)); /* tZQoper */
> + pctl_timing->tmrr = 0;
> + pctl_timing->tckesr = pctl_timing->tcke + 1; /* JESD-79: tCKE + 1tCK */
> + pctl_timing->tdpd = 0; /* RK3368 TRM: "allowed values for DDR3: 0" */
> +
> +
> + /*
> + * The controller can represent tFAW as 4x, 5x or 6x tRRD only.
> + * We want to use the smallest multiplier that satisfies the tFAW
> + * requirements of the given speed-bin. If necessary, we stretch out
> + * tRRD to allow us to operate on a 6x multiplier for tFAW.
> + */
> + tfaw_as_ps = 40000; /* 40ns: tFAW for DDR3-1600K, 2KB page-size */
> + if (tCK_to_ps(pctl_timing->trrd * 6, freq) < tfaw_as_ps) {
> + /* If tFAW is > 6 x tRRD, we need to stretch tRRD */
> + pctl_timing->trrd = ps_to_tCK(DIV_ROUND_UP(40000, 6), freq);
> + params->tfaw_mult = TFAW_TRRD_MULT6;
> + } else if (tCK_to_ps(pctl_timing->trrd * 5, freq) < tfaw_as_ps) {
> + params->tfaw_mult = TFAW_TRRD_MULT6;
> + } else if (tCK_to_ps(pctl_timing->trrd * 4, freq) < tfaw_as_ps) {
> + params->tfaw_mult = TFAW_TRRD_MULT5;
> + } else {
> + params->tfaw_mult = TFAW_TRRD_MULT4;
> + }
> +
> + return 0;
> +}
> +
> +static void pctl_cfg(struct rk3368_ddr_pctl *pctl,
> + struct rk3368_sdram_params *params,
> + struct rk3368_grf *grf)
> +{
> + /* Configure PCTL timing registers */
> + params->pctl_timing.trefi |= BIT(31); /* see PCTL_TREFI */
> + copy_to_reg(&pctl->togcnt1u, &params->pctl_timing.togcnt1u,
> + sizeof(params->pctl_timing));
> + writel(params->trefi_mem_ddr3, &pctl->trefi_mem_ddr3);
> +
> + /* Set up ODT write selector and ODT write length */
> + writel((RANK0_ODT_WRITE_SEL | RANK1_ODT_WRITE_SEL), &pctl->dfiodtcfg);
> + writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1);
> +
> + /* Set up the CL/CWL-dependent timings of DFI */
> + writel((params->pctl_timing.tcl - 1) / 2 - 1, &pctl->dfitrddataen);
> + writel((params->pctl_timing.tcwl - 1) / 2 - 1, &pctl->dfitphywrlat);
> +
> + /* DDR3 */
> + writel(params->tfaw_mult | DDR3_EN | DDR2_DDR3_BL_8, &pctl->mcfg);
> + writel(0x001c0004, &grf->ddrc0_con0);
> +
> + setbits_le32(&pctl->scfg, HW_LOW_POWER_EN);
> +}
> +
> +static int ddrphy_data_training(struct rk3368_ddr_pctl *pctl,
> + struct rk3368_ddrphy *ddrphy)
> +{
> + const u32 trefi = readl(&pctl->trefi);
> + const ulong timeout_ms = 500;
> + ulong tmp;
> +
> + /* disable auto-refresh */
> + writel(0 | BIT(31), &pctl->trefi);
> +
> + clrsetbits_le32(&ddrphy->reg[2], 0x33, 0x20);
> + clrsetbits_le32(&ddrphy->reg[2], 0x33, 0x21);
> +
> + tmp = get_timer(0);
> + do {
> + if (get_timer(tmp) > timeout_ms) {
> + error("%s: did not complete within %ld ms\n",
> + __func__, timeout_ms);
> + return -ETIME;
> + }
> + } while ((readl(&ddrphy->reg[0xff]) & 0xf) != 0xf);
> +
> + send_command(pctl, MCMD_RANK0 | MCMD_RANK1, PREA_CMD);
> + clrsetbits_le32(&ddrphy->reg[2], 0x33, 0x20);
> + /* resume auto-refresh */
> + writel(trefi | BIT(31), &pctl->trefi);
> +
> + return 0;
> +}
> +
> +static int sdram_col_row_detect(struct udevice *dev)
> +{
> + struct dram_info *priv = dev_get_priv(dev);
> + struct rk3368_sdram_params *params = dev_get_platdata(dev);
> + struct rk3368_ddr_pctl *pctl = priv->pctl;
> + struct rk3368_msch *msch = priv->msch;
> + const u32 test_pattern = 0x5aa5f00f;
> + int row, col;
> + uintptr_t addr;
> +
> + move_to_config_state(pctl);
> + writel(6, &msch->ddrconf);
> + move_to_access_state(pctl);
> +
> + /* Detect col */
> + for (col = 11; col >= 9; col--) {
> + writel(0, CONFIG_SYS_SDRAM_BASE);
> + addr = CONFIG_SYS_SDRAM_BASE +
> + (1 << (col + params->chan.bw - 1));
> + writel(test_pattern, addr);
> + if ((readl(addr) == test_pattern) &&
> + (readl(CONFIG_SYS_SDRAM_BASE) == 0))
> + break;
> + }
> +
> + if (col == 8) {
> + error("%s: col detect error\n", __func__);
> + return -EINVAL;
> + }
> +
> + move_to_config_state(pctl);
> + writel(15, &msch->ddrconf);
> + move_to_access_state(pctl);
> +
> + /* Detect row*/
> + for (row = 16; row >= 12; row--) {
> + writel(0, CONFIG_SYS_SDRAM_BASE);
> + addr = CONFIG_SYS_SDRAM_BASE + (1 << (row + 15 - 1));
> + writel(test_pattern, addr);
> + if ((readl(addr) == test_pattern) &&
> + (readl(CONFIG_SYS_SDRAM_BASE) == 0))
> + break;
> + }
> +
> + if (row == 11) {
> + error("%s: row detect error\n", __func__);
> + return -EINVAL;
> + }
> +
> + /* Record results */
> + debug("%s: col %d, row %d\n", __func__, col, row);
> + params->chan.col = col;
> + params->chan.cs0_row = row;
> + params->chan.cs1_row = row;
> + params->chan.row_3_4 = 0;
> +
> + return 0;
> +}
> +
> +static int msch_niu_config(struct rk3368_msch *msch,
> + struct rk3368_sdram_params *params)
> +{
> + int i;
> + const u8 cols = params->chan.col - ((params->chan.bw == 2) ? 0 : 1);
> + const u8 rows = params->chan.cs0_row;
> +
> + /*
> + * The DDR address-translation table always assumes a 32bit
> + * bus and the comparison below takes care of adjusting for
> + * a 16bit bus (i.e. one column-address is consumed).
> + */
> + const struct {
> + u8 rows;
> + u8 columns;
> + u8 type;
> + } ddrconf_table[] = {
> + /*
> + * C-B-R-D patterns are first. For these we require an
> + * exact match for the columns and rows (as there's
> + * one entry per possible configuration).
> + */
> + [0] = { .rows = 13, .columns = 10, .type = DMC_MSCH_CBRD },
> + [1] = { .rows = 14, .columns = 10, .type = DMC_MSCH_CBRD },
> + [2] = { .rows = 15, .columns = 10, .type = DMC_MSCH_CBRD },
> + [3] = { .rows = 16, .columns = 10, .type = DMC_MSCH_CBRD },
> + [4] = { .rows = 14, .columns = 11, .type = DMC_MSCH_CBRD },
> + [5] = { .rows = 15, .columns = 11, .type = DMC_MSCH_CBRD },
> + [6] = { .rows = 16, .columns = 11, .type = DMC_MSCH_CBRD },
> + [7] = { .rows = 13, .columns = 9, .type = DMC_MSCH_CBRD },
> + [8] = { .rows = 14, .columns = 9, .type = DMC_MSCH_CBRD },
> + [9] = { .rows = 15, .columns = 9, .type = DMC_MSCH_CBRD },
> + [10] = { .rows = 16, .columns = 9, .type = DMC_MSCH_CBRD },
> + /*
> + * 11 through 13 are C-R-B-D patterns. These are
> + * matched for an exact number of columns and to
> + * ensure that the hardware uses at least as many rows
> + * as the pattern requires (i.e. we make sure that
> + * there's no gaps up until we hit the device/chip-select;
> + * however, these patterns can accept up to 16 rows,
> + * as the row-address continues right after the CS
> + * switching)
> + */
> + [11] = { .rows = 15, .columns = 10, .type = DMC_MSCH_CRBD },
> + [12] = { .rows = 14, .columns = 11, .type = DMC_MSCH_CRBD },
> + [13] = { .rows = 13, .columns = 10, .type = DMC_MSCH_CRBD },
> + /*
> + * 14 and 15 are catch-all variants using a C-B-D-R
> + * scheme (i.e. alternating the chip-select every time
> + * C-B overflows) and stuffing the remaining C-bits
> + * into the top. Matching needs to make sure that the
> + * number of columns is either an exact match (i.e. we
> + * can use less the the maximum number of rows) -or-
> + * that the columns exceed what is given in this table
> + * and the rows are an exact match (in which case the
> + * remaining C-bits will be stuffed onto the top after
> + * the device/chip-select switches).
> + */
> + [14] = { .rows = 16, .columns = 10, .type = DMC_MSCH_CBDR },
> + [15] = { .rows = 16, .columns = 9, .type = DMC_MSCH_CBDR },
> + };
> +
> + /*
> + * For C-B-R-D, we need an exact match (i.e. both for the number of
> + * columns and rows), while for C-B-D-R, only the the number of
> + * columns needs to match.
> + */
> + for (i = 0; i < ARRAY_SIZE(ddrconf_table); i++) {
> + bool match = false;
> +
> + /* If this entry if for a different matcher, then skip it */
> + if (ddrconf_table[i].type != params->memory_schedule)
> + continue;
> +
> + /*
> + * Match according to the rules (exact/inexact/at-least)
> + * documented in the ddrconf_table above.
> + */
> + switch (params->memory_schedule) {
> + case DMC_MSCH_CBRD:
> + match = (ddrconf_table[i].columns == cols) &&
> + (ddrconf_table[i].rows == rows);
> + break;
> +
> + case DMC_MSCH_CRBD:
> + match = (ddrconf_table[i].columns == cols) &&
> + (ddrconf_table[i].rows <= rows);
> + break;
> +
> + case DMC_MSCH_CBDR:
> + match = (ddrconf_table[i].columns == cols) ||
> + ((ddrconf_table[i].columns <= cols) &&
> + (ddrconf_table[i].rows == rows));
> + break;
> +
> + default:
> + break;
> + }
> +
> + if (match) {
> + debug("%s: setting ddrconf 0x%x\n", __func__, i);
> + writel(i, &msch->ddrconf);
> + return 0;
> + }
> + }
> +
> + error("%s: ddrconf (NIU config) not found\n", __func__);
> + return -EINVAL;
> +}
> +
> +static void dram_all_config(struct udevice *dev)
> +{
> + struct dram_info *priv = dev_get_priv(dev);
> + struct rk3368_pmu_grf *pmugrf = priv->pmugrf;
> + struct rk3368_sdram_params *params = dev_get_platdata(dev);
> + const struct rk3288_sdram_channel *info = &params->chan;
> + u32 sys_reg = 0;
> + const int chan = 0;
> +
> + sys_reg |= DDR3 << SYS_REG_DDRTYPE_SHIFT;
> + sys_reg |= 0 << SYS_REG_NUM_CH_SHIFT;
> +
> + sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(chan);
> + sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(chan);
> + sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(chan);
> + sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(chan);
> + sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(chan);
> + sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(chan);
> + sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(chan);
> + sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(chan);
> + sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(chan);
> +
> + writel(sys_reg, &pmugrf->os_reg[2]);
> +}
> +
> +static int setup_sdram(struct udevice *dev)
> +{
> + struct dram_info *priv = dev_get_priv(dev);
> + struct rk3368_sdram_params *params = dev_get_platdata(dev);
> +
> + struct rk3368_ddr_pctl *pctl = priv->pctl;
> + struct rk3368_ddrphy *ddrphy = priv->phy;
> + struct rk3368_cru *cru = priv->cru;
> + struct rk3368_grf *grf = priv->grf;
> + struct rk3368_msch *msch = priv->msch;
> +
> + int ret;
> +
> + /* The input clock (i.e. DPLL) needs to be 2x the DRAM frequency */
> + ret = clk_set_rate(&priv->ddr_clk, 2 * params->ddr_freq);
> + if (ret < 0) {
> + debug("%s: could not set DDR clock: %d\n", __func__, ret);
> + return ret;
> + }
> +
> + /* Update the read-latency for the RK3368 */
> + writel(0x32, &msch->readlatency);
> +
> + /* Initialise the DDR PCTL and DDR PHY */
> + ddrctl_reset(cru);
> + ddrphy_reset(ddrphy);
> + ddrphy_config_delays(ddrphy, params->ddr_freq);
> + dfi_cfg(pctl);
> + /* Configure relative system information of grf_ddrc0_con0 register */
> + ddr_set_ddr3_mode(grf, true);
> + ddr_set_noc_spr_err_stall(grf, true);
> + /* Calculate timings */
> + pctl_calc_timings(params, params->ddr_freq);
> + /* Initialise the device timings in protocol controller */
> + pctl_cfg(pctl, params, grf);
> + /* Configure AL, CL ... information of PHY registers */
> + ddrphy_config(ddrphy,
> + params->pctl_timing.tcl,
> + params->pctl_timing.tal,
> + params->pctl_timing.tcwl);
> +
> + /* Initialize DRAM and configure with mode-register values */
> + ret = memory_init(pctl, params);
> + if (ret)
> + goto error;
> +
> + move_to_config_state(pctl);
> + /* Perform data-training */
> + ddrphy_data_training(pctl, ddrphy);
> + move_to_access_state(pctl);
> +
> + /* TODO(prt): could detect rank in training... */
> + params->chan.rank = 2;
> + /* TODO(prt): bus width is not auto-detected (yet)... */
> + params->chan.bw = 2; /* 32bit wide bus */
> + params->chan.dbw = params->chan.dbw; /* 32bit wide bus */
> +
> + /* DDR3 is always 8 bank */
> + params->chan.bk = 3;
> + /* Detect col and row number */
> + ret = sdram_col_row_detect(dev);
> + if (ret)
> + goto error;
> +
> + /* Configure NIU DDR configuration */
> + ret = msch_niu_config(msch, params);
> + if (ret)
> + goto error;
> +
> + /* set up OS_REG to communicate w/ next stage and OS */
> + dram_all_config(dev);
> +
> + return 0;
> +
> +error:
> + printf("DRAM init failed!\n");
> + hang();
> +}
> +#endif
> +
> +static int rk3368_dmc_ofdata_to_platdata(struct udevice *dev)
> +{
> + int ret = 0;
> +
> +#if !CONFIG_IS_ENABLED(OF_PLATDATA)
> + struct rk3368_sdram_params *plat = dev_get_platdata(dev);
> +
> + ret = regmap_init_mem(dev, &plat->map);
> + if (ret)
> + return ret;
> +#endif
> +
> + return ret;
> +}
> +
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> +static int conv_of_platdata(struct udevice *dev)
> +{
> + struct rk3368_sdram_params *plat = dev_get_platdata(dev);
> + struct dtd_rockchip_rk3368_dmc *of_plat = &plat->of_plat;
> + int ret;
> +
> + plat->ddr_freq = of_plat->rockchip_ddr_frequency;
> + plat->ddr_speed_bin = of_plat->rockchip_ddr_speed_bin;
> + plat->memory_schedule = of_plat->rockchip_memory_schedule;
> +
> + ret = regmap_init_mem_platdata(dev, of_plat->reg,
> + ARRAY_SIZE(of_plat->reg) / 2,
> + &plat->map);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +#endif
> +
> +static int rk3368_dmc_probe(struct udevice *dev)
> +{
> +#ifdef CONFIG_TPL_BUILD
> + struct rk3368_sdram_params *plat = dev_get_platdata(dev);
> + struct rk3368_ddr_pctl *pctl;
> + struct rk3368_ddrphy *ddrphy;
> + struct rk3368_cru *cru;
> + struct rk3368_grf *grf;
> + struct rk3368_msch *msch;
> + int ret;
> + struct udevice *dev_clk;
> +#endif
> + struct dram_info *priv = dev_get_priv(dev);
> +
> +#if CONFIG_IS_ENABLED(OF_PLATDATA)
> + ret = conv_of_platdata(dev);
> + if (ret)
> + return ret;
> +#endif
> +
> + priv->pmugrf = syscon_get_first_range(ROCKCHIP_SYSCON_PMUGRF);
> + debug("%s: pmugrf=%p\n", __func__, priv->pmugrf);
> +
> +#ifdef CONFIG_TPL_BUILD
> + pctl = regmap_get_range(plat->map, 0);
> + ddrphy = regmap_get_range(plat->map, 1);
> + msch = syscon_get_first_range(ROCKCHIP_SYSCON_MSCH);
> + grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
> +
> + priv->pctl = pctl;
> + priv->phy = ddrphy;
> + priv->msch = msch;
> + priv->grf = grf;
> +
> + ret = rockchip_get_clk(&dev_clk);
> + if (ret)
> + return ret;
> + priv->ddr_clk.id = CLK_DDR;
> + ret = clk_request(dev_clk, &priv->ddr_clk);
> + if (ret)
> + return ret;
> +
> + cru = rockchip_get_cru();
> + priv->cru = cru;
> + if (IS_ERR(priv->cru))
> + return PTR_ERR(priv->cru);
> +
> + ret = setup_sdram(dev);
> + if (ret)
> + return ret;
> +#endif
> +
> + priv->info.base = 0;
> + priv->info.size =
> + rockchip_sdram_size((phys_addr_t)&priv->pmugrf->os_reg[2]);
> +
> + /*
> + * we use the 0x00000000~0xfdffffff space since 0xff000000~0xffffffff
> + * is SoC register space (i.e. reserved), and 0xfe000000~0xfeffffff is
> + * inaccessible for some IP controller.
> + */
> + priv->info.size = min(priv->info.size, (size_t)0xfe000000);
> +
> + return 0;
> +}
> +
> +static int rk3368_dmc_get_info(struct udevice *dev, struct ram_info *info)
> +{
> + struct dram_info *priv = dev_get_priv(dev);
> +
> + *info = priv->info;
> + return 0;
> +}
> +
> +static struct ram_ops rk3368_dmc_ops = {
> + .get_info = rk3368_dmc_get_info,
> +};
> +
> +
> +static const struct udevice_id rk3368_dmc_ids[] = {
> + { .compatible = "rockchip,rk3368-dmc" },
> + { }
> +};
> +
> +U_BOOT_DRIVER(dmc_rk3368) = {
> + .name = "rockchip_rk3368_dmc",
> + .id = UCLASS_RAM,
> + .of_match = rk3368_dmc_ids,
> + .ops = &rk3368_dmc_ops,
> + .probe = rk3368_dmc_probe,
> + .priv_auto_alloc_size = sizeof(struct dram_info),
> + .ofdata_to_platdata = rk3368_dmc_ofdata_to_platdata,
> + .probe = rk3368_dmc_probe,
> + .priv_auto_alloc_size = sizeof(struct dram_info),
> + .platdata_auto_alloc_size = sizeof(struct rk3368_sdram_params),
> +};
> diff --git a/include/dt-bindings/memory/rk3368-dmc.h b/include/dt-bindings/memory/rk3368-dmc.h
> new file mode 100644
> index 0000000..b06ffde
> --- /dev/null
> +++ b/include/dt-bindings/memory/rk3368-dmc.h
> @@ -0,0 +1,30 @@
> +#ifndef DT_BINDINGS_RK3368_DMC_H
> +#define DT_BINDINGS_RK3368_DMC_H
> +
> +#define DMC_MSCH_CBDR 0x0
> +#define DMC_MSCH_CBRD 0x1
> +#define DMC_MSCH_CRBD 0x2
> +
> +#define DDR3_800D 0
> +#define DDR3_800E 1
> +#define DDR3_1066E 2
> +#define DDR3_1066F 3
> +#define DDR3_1066G 4
> +#define DDR3_1333F 5
> +#define DDR3_1333G 6
> +#define DDR3_1333H 7
> +#define DDR3_1333J 8
> +#define DDR3_1600G 9
> +#define DDR3_1600H 10
> +#define DDR3_1600J 11
> +#define DDR3_1600K 12
> +#define DDR3_1866J 13
> +#define DDR3_1866K 14
> +#define DDR3_1866L 15
> +#define DDR3_1866M 16
> +#define DDR3_2133K 17
> +#define DDR3_2133L 18
> +#define DDR3_2133M 19
> +#define DDR3_2133N 20
> +
> +#endif