Orange Pi 4 PCIe Link Speed?


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22 minutes ago, jstefanop said:

What is the current pcie link speed set for stable Armbian 5.9.x release?

We have Gen1 by default as it's the only one that's officially supported by Rockchip with RK3399:

https://github.com/armbian/build/blob/master/patch/kernel/rockchip64-current/add-board-orangepi-4.patch#L839

 

You can however try switching it to Gen2 with pcie-gen2 overlay (overlays=pcie-gen2 in /boot/armbianEnv.txt) and see how it goes:

https://github.com/armbian/build/blob/master/patch/kernel/rockchip64-current/general-rockchip-overlays.patch#L70

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I have a NanoPC T4 (RK3399) with Friendly ARM ubuntu distro NOT Armbian as yet - I plan to migrate hence why I am reading these forums

If this provides a data point?

scott@hass:~$ sudo lspci -vv | grep -E 'PCI bridge|LnkCap'
00:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd Device 0100 (prog-if 00 [Normal decode])
        LnkCap:    Port #0, Speed 5GT/s, Width x4, ASPM L1, Exit Latency L0s <256ns, L1 <8us
        LnkCap:    Port #0, Speed 8GT/s, Width x4, ASPM L1, Exit Latency L0s unlimited, L1 <64us

scott@hass:~$ sudo hdparm -t /dev/nvme0n1p2

/dev/nvme0n1p2:
 Timing buffered disk reads: 1784 MB in  3.00 seconds = 594.26 MB/sec

 

 

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On 12/11/2020 at 2:26 PM, piter75 said:

We have Gen1 by default as it's the only one that's officially supported by Rockchip with RK3399:

https://github.com/armbian/build/blob/master/patch/kernel/rockchip64-current/add-board-orangepi-4.patch#L839

 

You can however try switching it to Gen2 with pcie-gen2 overlay (overlays=pcie-gen2 in /boot/armbianEnv.txt) and see how it goes:

https://github.com/armbian/build/blob/master/patch/kernel/rockchip64-current/general-rockchip-overlays.patch#L70

 

Ok we just finished our 2x M.2 breakout board (uses both lanes exposed by the PCIE port on the orange pi 4). Is there a similar setting for link width? Its currently picking up a x4 Gen 3 M.2 drive with both link speed downgraded to gen 1 (as expected), and width downgraded to 1x. Should be 2x. 

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