DDR3 Config Setting in P1020RM

[alpesh_borad]

Hello,

I am using P1020RM in my current design.

In design, there are Two DDR-3 memory connected with P1020RM.

In earlier design, it was working fine @200MHz clock frequency and below are the hardware setting for 200MHz clock,

• Pin# AJ22, TSEC_1588_PULSE_OUT2 - kept Floating
• Pin# AH21, TSEC_1588_PULSE_OUT1 - kept Floating
  
• Pin# AG22, TSEC_1588_CLK_OUT - kept Floating

Now we want to increase the clock frequency to 333MHz and for that we made changes from code warrior QCVS for register setting and apply in our u-boot code but It's not working.

Below are the hardware setting for 333MHz clock,

• Pin# AJ22, TSEC_1588_PULSE_OUT2 - kept Low
• Pin# AH21, TSEC_1588_PULSE_OUT1 - kept Low
  
• Pin# AG22, TSEC_1588_CLK_OUT - kept High

Observation:-

With some different register setting,

• It shows error " D_INT time out. Memory may not work".

With some other different register setting,

• It's not going further after DRAM INIT.

Can any one provide the correct register and hardware setting to work DDR-3 @333MHz clock frequency? 

DDR3 Part# AS4C512M8D3A-12BIN

Regards,

Alpesh.

[Bulat]

It looks like you use 16-bit DDR3 bus width. Our developemnt boards have 32-bit memory bus, below is the memory dump of the DDR3 controller working at 333MHZ MCK frequency:

ffe02000: 0000003f 00000000 00000000 00000000
ffe02010: 00000000 00000000 00000000 00000000
ffe02080: 80014302 00000000 00000000 00000000
ffe02090: 00000000 00000000 00000000 00000000
ffe020a0: 00000000 00000000 00000000 00000000
ffe020b0: 00000000 00000000 00000000 00000000
ffe020c0: 00000000 00000000 00000000 00000000
ffe020d0: 00000000 00000000 00000000 00000000
ffe020e0: 00000000 00000000 00000000 00000000
ffe02020: 00000000 00000000 00000000 00000000
ffe02030: 00000000 00000000 00000000 00000000
ffe02040: 00000000 00000000 00000000 00000000
ffe02050: 00000000 00000000 00000000 00000000
ffe02060: 00000000 00000000 00000000 00000000
ffe02070: 00000000 00000000 00000000 00000000
ffe020f0: 00000000 00000000 00000000 00000000
ffe02100: 00020000 00110104 5d59e544 0fa888cd
ffe02110: c70c0008 24401000 00441210 00000000
ffe02120: 00000000 0a280100 deadbeef 00000000
ffe02130: 03000000 00000000 00000000 00000000
ffe02140: 00000000 00000000 00000000 00000000
ffe02150: 00000000 00000000 00000000 00000000
ffe02160: 00000001 01401400 00000000 00000000
ffe02170: 89080600 8675f608 00000000 00000000
ffe02180: 00000000 00000000 00000000 00000000
ffe02190: 00000000 00000000 00000000 00000000
ffe021a0: 00000000 00000000 00000000 00000000
ffe021b0: 00000000 00000000 00000000 00000000
ffe021c0: 00000000 00000000 00000000 00000000
ffe021d0: 00000000 00000000 00000000 00000000
ffe021e0: 00000000 00000000 00000000 00000000
ffe021f0: 00000000 00000000 00000000 00000000

Regards,

Bulat

[alpesh_borad]

Hello Bulat,

Thank you very much for your response.

We used your value but unfortunately that did not work for me.

We have modified some registers' value from your value which work for me.

Below is the table showing all registers' value which we used for 333MHz clock frequency.

Offset address (hex)	Register name	Value for 333MHz
2000	DDR_CS0_BNDS	0x0000003F
2008	DDR_CS1_BNDS	0x00000000
2080	DDR_CS0_CONFIG	0x80014402
2084	DDR_CS1_CONFIG	0x00000000
20C0	DDR_CS0_CONFIG_2	0x00000000
20C4	DDR_CS1_CONFIG_2	0x00000000
2100	DDR_TIMING_CFG_3	0x00050000
2104	DDR_TIMING_CFG_0	0x00110104
2108	DDR_TIMING_CFG_1	0x5D592544
210C	DDR_TIMING_CFG_2	0x0FA890CD
2110	DDR_DDR_SDRAM_CFG	0xC7140008
2114	DDR_DDR_SDRAM_CFG_2	0x24401010
2118	DDR_DDR_SDRAM_MODE	0x00441210
211C	DDR_DDR_SDRAM_MODE_2	0x00000000
2120	DDR_DDR_SDRAM_MD_CNTL	0x00000000
2124	DDR_DDR_SDRAM_INTERVAL	0x0A280100
2128	DDR_DDR_DATA_INIT	0xDEADBEEF
2130	DDR_DDR_SDRAM_CLK_CNTL	0x03000000
2148	DDR_DDR_INIT_ADDR	0x00000000
214C	DDR_DDR_INIT_EXT_ADDR	0x00000000
2160	DDR_TIMING_CFG_4	0x00000001
2164	DDR_TIMING_CFG_5	0x01401400
2170	DDR_DDR_ZQ_CNTL	0x89080600
2174	DDR_DDR_WRLVL_CNTL	0x8675F608
217C	DDR_DDR_SR_CNTR	0x00000000
2180	DDR_DDR_SDRAM_RCW_1	0x00000000
2184	DDR_DDR_SDRAM_RCW_2	0x00000000

Thanks again.

Regards,

Alpesh.

[Bulat]

Of course values needed to be modified in accordance with your bus width and specific DDR3 device parameters. Am I correct that DDR3 memory is now working?

Regards,

Bulat

[alpesh_borad]

Hello Bulat,

Yes, You're right.

The DDR-3 memory is now working with this new settings.

Thanks again.

Regards,

Alpesh.