Hi All, We are working rzg2n based customized board,we got uboot working. Our hard ware voltage for SDIO interface is 1.8V fixed. when we try to detect micro-sd card
it is showing below error.
U-Boot 2018.09 (Feb 06 2023 - 11:03:23 +0000)
CPU: Renesas Electronics R8A774B1 rev 1.1Model: Relysys Technologies Relysys RZ/G2N platform (relysys-rzg2n)DRAM: 1.9 GiBBank #0: 0x048000000 - 0x0bfffffff, 1.9 GiB
Watchdog: Not found by seq!WDT: watchdog@e6020000Watchdog: Started!MMC: sd@ee140000: 0, sd@ee160000: 1Loading Environment from MMC... *** Warning - bad CRC, using default environment
In: serial@e6e88000Out: serial@e6e88000Err: serial@e6e88000Net: eth-1: ethernet@e6800000Hit any key to stop autoboot: 0=>=>=> mmc infoCard did not respond to voltage select!
Please help us to how to set microsd card voltage to 1.8v in software and get it work,
Thanks and regards,
Nagaraja
Hi MIcBIs,
Those are the line we put in boot_init_dram_Config-preset.c in the flash_writer code for debug purpose
Could you please let us know is Renesas SDK suports memory controller complaiance to both JESD209-4A and JESD209-4B specification on RZG2N Evaluation platform.
or it supports only JESD209-4A.
For your reference we are attaching the image of the processor which we are using
Nagraja.
I would suggest to get in touch with your local Renesas sales / support for this kind of questions.
What spec addition of JESD209-4B are you after?
Hi MicBis,
Micron guys are saying JESD209-4A version of LPDDR4 is 16 bit row address
and JESD209-4B is version of LPDDR4 is 17 bit row address.
So we want to know is our RZG2N support either of one or both.
Hi MIcBis,
Please find the attached data sheet of the LPDDR that we are useing , only difference is the row address is R[16:0] .
And only One rank
200b_z32m_sdp_ddp_qdp_auto_lpddr4_lpddr4x (1).pdf
Thanks and regards
This 1-rank memory cannot work with RZ/G2N, as I mentioned:
MicBis said:I can't find the DS of the MT53E1G32D2FW-046, anyway to have 4GB the RZ/G2N only supports 2-rank LPDDR4, 16Gbit x 2, 4GB per channel (only 1 channel is available), corresponding to 0x4, 0x4 setting.
The other DS included different information.