Linux/TDA2SX: Regarding the DDR3 tool(EMIF tools) which is used to get the initialization values of DDR3

Hi,
Did you check www.ti.com/.../sprac36 ?

Regards,
Somnath

Hi Somanath,

Yes I checked that file.But my question was how to generate that file or generate the DDR3 calibration values using the EMIF application tool mentioned in the sprac36c.pdf.
Because for our Customized board we are thinking to modify the DDR3 chip,If we modify the chip how I need to configure the DDR3 and how to generate "Register Configuration - Register Values" using EMIF tools.So I need the EMIF tool and after generating the register values of DDR3 in which files of u-boot I need to Modify?Please help me to know the procedure how to use the tool & configure the DDR3 after generating the register values,Because i'm new to DDR3.

Thanks,
A.Kavya Harini

Hii kevin,

Thanks for the Information I'll go through these documents and if I have any doubts i'll get back to you.

Thanks,
A.kavya harini

Hi Kevin,

I am trying to fill the board details(step:2 or work sheet 2) in the EMIF tool, but I don't know the PCB trace lengths values ,please help me which values I need to fill in that sheet.Please give some input data to fill that board details sheet to generate the values.

--> I have another doubt also regarding the work sheet :1 nothing but system details.
In the system details worksheet a)Company / Board Name / Revision (Ex: TI_EVM_revC)-->?
b)TI SOC Part Number-->?
Regarding these descriptions what values I need to fill? whether the board name is TI_TDA2xx_EVM or TI_DRA74x_EVM or some thing other. Please help me to fill these details also.

Please go through the below log while i'm booting our TDA2XX EVM board with 3.04 VISION SDK version images. i'm getting this log.

U-Boot 2016.05-00010-g9551b3d (May 16 2019 - 11:05:10 +0530)

CPU : DRA752-GP ES2.0
Model: TI DRA742
Board: DRA74x EVM REV H.0
DRAM: 4 GiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1

Please help me to resolve the issue.

Thanks & Regards,
A.Kavya Harini

Hi Mehmet,

Thanks for the reply I will go through it once for the trace lengths.

In the Mean while could you please suggest me,what data I need to put in work sheet-1.

In the system details worksheet  a)Company / Board Name / Revision (Ex: TI_EVM_revC)-->?
                                                    b)TI SOC Part Number-->?
Regarding these descriptions what values I need to fill? whether the board name is TI_TDA2xx_EVM or TI_DRA74x_EVM or some thing other. Please help me to fill these details also.

Please go through the below log while i'm booting our TDA2XX EVM board with 3.04 VISION SDK version images. i'm getting this log.

U-Boot 2016.05-00010-g9551b3d (May 16 2019 - 11:05:10 +0530)

CPU : DRA752-GP ES2.0
Model: TI DRA742
Board: DRA74x EVM REV H.0
DRAM: 4 GiB
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1

Hi Kevin,

Thanks for the reply.

I'm able to generate the values for TDA2x for cpu board DRA752-GP ES2.0. So as mentioned  in the "Software Guidelines to EMIF/DDR3 Configuration on DRA7xx Devices pdf" present in the following link.

http://www.ti.com/lit/an/spraca1/spraca1.pdf

I generated the values for DDR3 and I compared with the values present in the PDF under section 3.1 what I mentioned in the above link.Those values are matching correctly.(I generated values for chip MT41K512M16)

1. But I observed some generated values from EMIF tool are differed while filling the structures at u-boot covered at  section 3.2.1Updatethe EMIF1/2DDR3TimingParameters.

The parameters which are differed from generated values are listed below.

const struct emif_regs emif1_ddr3_532_mhz_1cs_2G{

.sdram_config2= 0x08000000                              ///////////////////////////////These are the values differing in EMIF1 structure///////////////////////////////

.sdram_tim2= 0x30BF7FDA

.sdram_tim3= 0x427F8BA8

.zq_config= 0x0007190B

}

const struct dmm_lisa_map_regsDRA75x_DDR3L_532MHz_TI_EVM_revG3_dmm_regs= {

.dmm_lisa_map_2= 0x80640300

}

const struct ctrl_ioregs ioregs_dra7xx_es1= {

.ctrl_lpddr2ch= 0x40404040,

.ctrl_ddrio_2= 0x84210000,                 ///////////////////////////////////In this structure these values are not generated in the EMIF tool////////////////////////

.ctrl_emif_sdram_config_ext= 0x0001C1A7,

.ctrl_emif_sdram_config_ext_final= 0x0001C1A7

,.ctrl_ddr_ctrl_ext_0= 0xA2000000,

}

In Software Guidelines to EMIF/DDR3 Configuration on DRA7xx Devices pdf & what ever the reference doc for EMIF tool saying to generate the tuning parameters, but the tool is generating only one structure, with that one structure how you are filling this "const struct emif_regs emif2_ddr3_532_mhz_1cs_2G{ }" structure.Those generated values are matching to emif1 structure

Why these values are differing?What exactly the differed values going to change in the aspect of configuring the DDR3.

These values are differed in PDF also.

2. As per my understanding emif1 is configuring to 2GB for two chips of "MT41K512M16" and emif2 is configuring to 2GB for four chips of "MT41K512M8".Is it right?

if it is right means we need to generate the tuning parameters independently for those two chips correct?

Please help me to understand the DDR3 parameters tuning.

Thanks & Regards,

A.Kavya Harini.

Hi Kevin,

Thanks for the reply. I have a small doubt.Could you please clear it.

1. If we select the hardware leveling, then no need to tune the physical registers(like EMIF_DDR_PHY_CONTROL_1). Is my way of thinking/understanding is correct?

2. If board trace lengths are modified, then how these register values will be updated, if we select the hardware leveling in EMIF tool.

Thanks & Regards,

A.Kavya Harini.

Hi Kevin,

Thanks for the Reply. It is very valuable information for us.

TI software driver--> Is the Ti software driver present in the ROM code or some other specific diver is using as TI software driver?

I want this information,Because we are going to select the Hardware leveling in our custom board.Please clarify me,that TI software driver is present in ROM code or not?

Thanks & Regards,

A.Kavya Harini.

Hi Piyali,

==>In the above conversation,"If hardware leveling is selected, these will be updated by the TI software driver after hardware leveling completes during initialization."

1.Could you please tell me the TI software driver name,if this TI software driver is present in SBL or in u-boot?

2.In my custom board memory traces are modified , compared to TI EVM.If I select Hardware leveling in EMIF tool whether, TI software driver handles the DLL values?Could you please confirm it.

Thanks & Regards,

A.Kavya Harini