ct100
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I have Armbian running on a NanoPi R6C 8GB with 32GB eMMC. I made a new Armbian image with the build framework that uses newest linux-u-boot-nanopi-r6s-legacy 23.8.0-trunk linux-dtb-legacy-rk35xx 23.8.0-trunk linux-image-legacy-rk35xx 23.8.0-trunk Booted from microSD this system has an idle power consumption of 0,92w. I can access both the eMMC and microSD storage. When i transfer this system from microSD to eMMC with "nand-sata-install" to boot & OS on eMMC and cold boot without the microSD, the idle power consumption increases to 1,21w. After a shutdown and booting from the microSD again the idle power consumption is back at 0,92w. So far i have not been able to find a reason for this. The only things i noticed was: (microSD) Device Start End Sectors Size Type /dev/mmcblk1p1 32768 557055 524288 256M Linux extended boot /dev/mmcblk1p2 557056 61702144 61145089 29.2G Linux filesystem (eMMC) Device Start End Sectors Size Type /dev/mmcblk0p1 32768 59998207 59965440 28.6G Linux filesystem While microSD uses a vfat partition for /boot and an EXT4 partition for the OS the eMMC has a single EXT4 partition for everything. Does that change how the system is booting? https://github.com/radxa/u-boot/commit/bf47e8171f44804c7f2004f53d3f05801f8dbbb8 Different drive strength settings in u-boot for when eMMC is boot drive or not? Can that really increase the power usage of the eMMC by 0,3w?
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Is it possible to activate PCIe ASPM L1 substates with the NanoPi R6C / RK3588s Soc in general? > lspci -vvv | grep ASPM LnkCtl: ASPM L1 Enabled; RCB 64 bytes, Disabled- CommClk+ L1SubCap: PCI-PM_L1.2+ PCI-PM_L1.1+ ASPM_L1.2+ ASPM_L1.1+ L1_PM_Substates+ L1SubCtl1: PCI-PM_L1.2- PCI-PM_L1.1- ASPM_L1.2- ASPM_L1.1- My M.2 NVMe SSD supports all L1 substates but setting pcie_aspm.policy to "powersupersave" has no effect. Max is "powersave" to activate ASPM L1 and that works. Is this a limitation of the SoC or just not implemented in the armbian driver / kernel?