AM6442: AM6442

Hello jimin.li,

Thank you for the query.

Do you have a diagram to explain the interface ? Is this a custom board ?

Regards,

Sreenivasa

hi  Kallikuppa Sreenivasa,

diagram as below.Yes,this is a custom board.

Kallikuppa Sreenivasa said:

Do you have a diagram to explain the interface ? Is this a custom board ?

GPMC interface connection configuration as below:

AM64X_IOPAD(0x003c, PIN_INPUT, 0) /* (T20) GPMC0_AD0 */
AM64X_IOPAD(0x0040, PIN_INPUT, 0) /* (U21) GPMC0_AD1 */
AM64X_IOPAD(0x0044, PIN_INPUT, 0) /* (T18) GPMC0_AD2 */
AM64X_IOPAD(0x0048, PIN_INPUT, 0) /* (U20) GPMC0_AD3 */
AM64X_IOPAD(0x004c, PIN_INPUT, 0) /* (U18) GPMC0_AD4 */
AM64X_IOPAD(0x0050, PIN_INPUT, 0) /* (U19) GPMC0_AD5 */
AM64X_IOPAD(0x0054, PIN_INPUT, 0) /* (V20) GPMC0_AD6 */
AM64X_IOPAD(0x0058, PIN_INPUT, 0) /* (V21) GPMC0_AD7 */
AM64X_IOPAD(0x005c, PIN_INPUT, 0) /* (V19) GPMC0_AD8 */
AM64X_IOPAD(0x0060, PIN_INPUT, 0) /* (T17) GPMC0_AD9 */

AM64X_IOPAD(0x0064, PIN_INPUT, 0) /* (R16) GPMC0_AD10 */
AM64X_IOPAD(0x0068, PIN_INPUT, 0) /* (W20) GPMC0_AD11 */
AM64X_IOPAD(0x006c, PIN_INPUT, 0) /* (W21) GPMC0_AD12 */
AM64X_IOPAD(0x0070, PIN_INPUT, 0) /* (V18) GPMC0_AD13 */
AM64X_IOPAD(0x0074, PIN_INPUT, 0) /* (Y21) GPMC0_AD14 */
AM64X_IOPAD(0x0078, PIN_INPUT, 0) /* (Y20) GPMC0_AD15 */

AM64X_IOPAD(0x00B8, PIN_INPUT, 8) /* (Y7) GPMC0_AD16 */
AM64X_IOPAD(0x00BC, PIN_INPUT, 8) /* (U8) GPMC0_AD17 */
AM64X_IOPAD(0x00C0, PIN_INPUT, 8) /* (W8) GPMC0_AD18 */
AM64X_IOPAD(0x00C4, PIN_INPUT, 8) /* (V8) GPMC0_AD19 */
AM64X_IOPAD(0x00C8, PIN_INPUT, 8) /* (Y8) GPMC0_AD20 */
AM64X_IOPAD(0x00CC, PIN_INPUT, 8) /* (V13) GPMC0_AD21 */
AM64X_IOPAD(0x00D0, PIN_INPUT, 8) /* (AA7) GPMC0_AD22 */
AM64X_IOPAD(0x00D4, PIN_INPUT, 8) /* (U13) GPMC0_AD23 */
AM64X_IOPAD(0x00D8, PIN_INPUT, 8) /* (W13) GPMC0_AD24 */
AM64X_IOPAD(0x00DC, PIN_INPUT, 8) /* (U15) GPMC0_AD25 */
AM64X_IOPAD(0x00E0, PIN_INPUT, 8) /* (U14) GPMC0_AD26 */
AM64X_IOPAD(0x00E4, PIN_INPUT, 8) /* (AA8) GPMC0_AD27 */
AM64X_IOPAD(0x00E8, PIN_INPUT, 8) /* (U9) GPMC0_AD28 */
AM64X_IOPAD(0x00EC, PIN_INPUT, 8) /* (W9) GPMC0_AD29 */
AM64X_IOPAD(0x00F0, PIN_INPUT, 8) /* (AA9) GPMC0_AD30 */
AM64X_IOPAD(0x00F4, PIN_INPUT, 8) /* (Y9) GPMC0_AD31 */

AM64X_IOPAD(0x0098, PIN_INPUT_PULLUP, 0) /* (W19) GPMC0_WAIT0 */
AM64X_IOPAD(0x009c, PIN_INPUT_PULLUP, 0) /* (Y18) GPMC0_WAIT1 */
AM64X_IOPAD(0x00a8, PIN_OUTPUT_PULLUP, 0) /* (R19) GPMC0_CSn0 */
AM64X_IOPAD(0x007c, PIN_OUTPUT, 0) /* (R17) GPMC0_CLK */
AM64X_IOPAD(0x0084, PIN_OUTPUT, 0) /* (P16) GPMC0_ADVn_ALE */
AM64X_IOPAD(0x0088, PIN_OUTPUT, 0) /* (R18) GPMC0_OEn_REn */
AM64X_IOPAD(0x008c, PIN_OUTPUT, 0) /* (T21) GPMC0_WEn */
AM64X_IOPAD(0x0090, PIN_OUTPUT, 0) /* (P17) GPMC0_BE0n_CLE */
AM64X_IOPAD(0x0094, PIN_OUTPUT, 0) /* (P17) GPMC0_BE1n_CLE */
AM64X_IOPAD(0x00F8, PIN_OUTPUT, 8) /* (V9) GPMC0_BE2n_CLE */
AM64X_IOPAD(0x014C, PIN_OUTPUT, 8) /* (AA14) GPMC0_BE3n_CLE */
AM64X_IOPAD(0x00a0, PIN_OUTPUT_PULLUP, 0) /* (N16) GPMC0_WPn */
AM64X_IOPAD(0x00a4, PIN_OUTPUT, 0) /* (N17) GPMC0_DIR */

GPMC_CONFIG registers configuration as below: 

GPMC_CONFIG1_0 addr: 0x3B000060

value: 0x28002200 //burst not support.Read/write synchronous.read/write single access.WAIT pin is not monitored for read/write access.NOR flash like type.device size select 32bit.Address Data multiplex.GPMC CLK frequency = GPMC_FCLK frequency.GPMC_CONFIG2_0 addr: 3B000064 value: 0xF0F00

Hello jimin.li

Thank you for the input.

Could you please confirm the development environment you are using. Based on your inputs, i may have to reassign the thread to the expert.

Regards,

Sreenivasa

hi  Kallikuppa Sreenivasa,

Thanks,

ubuntu version is 20.04.

SDK version is ti-processor-sdk-linux-am64xx-evm-08.02.00.23-Linux-x86

GPMC driver is in a53 uboot.

Best regards,

jimin.li

Hello jimin.li

Thank you for the inputs. 

Please expect some delay in response as i reassign to the expert.

Regards,

Sreenivasa

Hi Jimin,

Sorry I won't be able to help from software perspective. The AM64x Processor SDK Linux v8.2 is not validated with FPGA.

Hi Bin,

Thanks,

GPMC access to FPGA in SDK linux ver8.2 is not support no matter 32bit or 16bit access?

Could you tell me which SDK linux version will support FPGA? 

Bin Liu said:

The AM64x Processor SDK Linux v8.2 is not validated with FPGA.

Best regards,

jimin.li

hi Bin and Kallikuppa Sreenivasa,

Yes,we've checked SDK linux ver8.2 source code only  support GPMC NAND access,cause GPMC driver is for NAND.

Could you kindly tell me if SDK(mcu_plus_sdk & proceesor_sdk_linux) not support FPGA, AM6442 GPMC controller will not support FPGA access?  

Bin Liu said:

The AM64x Processor SDK Linux v8.2 is not validated with FPGA.

There is no words say GPMC not support FPGA in AM64x TRM,we also checked issue list about GPMC description in sprz457e-202207-AM64xAM243x Processor Silicon-issuelist.pdf as below.So GPMC 32bit read with NAND and FPGA/FIFO is supported,my understand is right?

 GPMC access FPGA is planning on R5 listed in  sw build sheet as below.

thanks,

jimin.li

HI Bin,

Thanks for your reply.