我们载板使用orin模组EMMC1 controller扩展了一个64G EMMC，扩展的EMMC是1.8v信号。使用的jetpack6.2，目前功能已调通，但是orin EMMC controller1输出信号是3.3v，需怎样改成1.8v信号？
尝试修改了把tegra234.dtsi mmc@3400000节点删除了sdmmc1_3v3后，重新编译、烧写，检测不到EMMC
my collage designed board, extend emmc storage(64GB) from orin emmc1 controller. using jetpack6.2 sdk, modify pinmux and dtb, extend emmc is recongnized read/write is ok. but emmc chip is 1.8v singnal , orin module emmc1 controller support(3.3v and 1.8v) so I want force orin module emmc1 contoller output 1.8v signal.
We don’t support extra emmc. You could just compare your setting with sdmmc4 default one.
3.3V and 1.8V I/O signaling voltage level is supported by the host controller on SDMMC1. Check response from SD Card/eMMC for CMD55 followed by ACMD41 sent from host controller. Based on SD Card/eMMC response for operating voltage range (OVR) bits the host will select suitable voltage range for communication to the SD Card/eMMC.
thks quickly reply. Buts base our product designed I need force set EMMC1(cmd/data0~4) to 1.8V sig
Additional eMMC is not supported in software.
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.