braveheartleo Posted February 7, 2020 Share Posted February 7, 2020 Hi, Is there any reason why the card is only initialized as high speed SDHC on this board? Quote [ 3.991777] sunxi-mmc 1c0f000.mmc: Got CD GPIO [ 4.021541] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB [ 4.105871] mmc0: host does not support reading read-only switch, assuming write-enable [ 4.119279] mmc0: new high speed SDHC card at address e624 [ 4.125858] mmcblk0: mmc0:e624 SC32G 29.7 GiB [ 4.135617] mmcblk0: p1 On my phone, it is initialized as ultra high speed SDR104 SDHC. Quote [ 14.035372,7] mmc_gpio_cd_irqt: mmc cd gpio status: 1 [ 14.449389,7] mmc1: new ultra high speed SDR104 SDHC card at address e624 [ 14.450205,7] mmcblk1: mmc1:e624 SC32G 29.7 GiB [ 14.451090,7] mmcblk1: p1 [ 14.553053,6] devfreq mmc1: Couldn't update frequency transition information. I'd like to know if there's anything I need to do to maximize the card's performance on this board. Thanks. Link to comment Share on other sites More sharing options...
braveheartleo Posted February 13, 2020 Author Share Posted February 13, 2020 (edited) After some search using a few different keywords yielded to the answers I was looking for from @tkaiser here. From that discussion, it would appear that the SD card speed was limited for stability reason. Edited February 13, 2020 by TRS-80 spacing, remove ping 1 Link to comment Share on other sites More sharing options...
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