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| − | {{ARM/breadcrumb}}
| + | #REDIRECT [[NixOS_on_ARM/OLIMEX_Teres-A64]] |
| − | <div class="infobox">
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| − | {|class="table"
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| − | !colspan="2" class="title"|Teres I
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| − | |-
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| − | !Manufacturer
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| − | |OLIMEX
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| − | |-
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| − | !Architecture
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| − | |AArch64
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| − | |-
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| − | !Bootloader
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| − | |U-Boot
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| − | |-
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| − | !Boot order
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| − | |To be confirmed
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| − | |-
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| − | !Maintainer
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| − | |[[User:Thra11|Thra11]]
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| − | |}
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| − | </div>
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| − | | |
| − | The Teres I is a DIY laptop kit based on the Allwinner A64 SoC.
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| − | | |
| − | It can boot from SD or from the internal eMMC.
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| − | | |
| − | == Status ==
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| − | | |
| − | Most functionality works in a generic aarch64 image using a recent kernel (tested 5.11 and 5.12).
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| − | | |
| − | == Board-specific installation notes ==
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| − | | |
| − | {{expansion}}
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| − | | |
| − | == Serial console==
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| − | | |
| − | Details about the pinout for the headphone jack are available [https://github.com/d3v1c3nv11/teres1-debug]. Serial output is enabled by writing 1 to GPIO 361. {{expansion}}
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| − | | |
| − | == Bluetooth ==
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| − | | |
| − | Bluetooth support for the Teres I is not yet included in linux. However, it can be made to work with a few modifications:
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| − | | |
| − | 1. Enable support for Realtek bluetooth controllers in your chosen kernel:
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| − | <syntaxhighlight lang="nix">
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| − | nixpkgs.config.packageOverrides = pkgs: {
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| − | linux_5_11 = pkgs.linux_5_11.override {
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| − | extraConfig = ''
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| − | BT_HCIUART_RTL y
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| − | '';
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| − | kernelPatches = [ {
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| − | name = "arm64-dts-allwinner-a64-Enable-Bluetooth-on-Teres-I";
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| − | patch = ./0001-arm64-dts-allwinner-a64-Enable-Bluetooth-on-Teres-I.patch;
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| − | }
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| − | ];
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| − | };
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| − | };
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| − | </syntaxhighlight>
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| − | 2. Add a section to the teres devicetree, <code>arch/arm64/boot/dts/allwinner/sun50i-a64-teres-i.dts</code>, to indicate that it has a realtek rtl8723bs bluetooth chip attached to uart1. This can be done either by patching the kernel sources, or as a device tree overlay:
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| − | <syntaxhighlight lang=dts>
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| − | &uart1 {
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| − | pinctrl-names = "default";
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| − | pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>;
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| − | uart-has-rtscts;
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| − | status = "okay";
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| − | | |
| − | bluetooth {
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| − | compatible = "realtek,rtl8723bs-bt";
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| − | device-wake-gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
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| − | host-wake-gpios = <&r_pio 0 5 GPIO_ACTIVE_HIGH>; /* PL5 */
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| − | enable-gpios = <&r_pio 0 4 GPIO_ACTIVE_HIGH>; /* PL4 */
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| − | };
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| − | };
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| − | </syntaxhighlight>
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| − | | |
| − | 3. The package <code>firmware-linux-nonfree</code>contains a blob which is suitable, <code>rtl8723bs_config-OBDA8723.bin</code> but it is suffixed with the ACPI ID. Since we are using a devicetree instead, linux expects it to be available as <code>rtl8723bs_config.bin</code>. We can achieve this by creating a simple package containing a symlink to the firmware file, and adding it to <code>hardware.firmware</code> in our NixOS configuration:
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| − | {{file|teres-rtl8723bs-firmware/default.nix|nix|<nowiki>
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| − | { runCommandNoCC, firmwareLinuxNonfree }:
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| − | | |
| − | runCommandNoCC "teres-rtl8723bs-firmware-${firmwareLinuxNonfree.version}" {} ''
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| − | mkdir -p $out/lib/firmware/rtl_bt
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| − | ln -s ${firmwareLinuxNonfree}/lib/firmware/rtl_bt/rtl8723bs_config-OBDA8723.bin \
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| − | $out/lib/firmware/rtl_bt/rtl8723bs_config.bin
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| − | ''
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| − | </nowiki>}}
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| − | | |
| − | == Known issues ==
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| − | * The keyboard firmware does not initialise in time to provide input to u-boot. An external USB keyboard can be used to change u-boot settings or choose which NixOS generation to boot.
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| − | | |
| − | {{expansion}}
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| − | | |
| − | == Resources ==
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| − | | |
| − | * [https://www.olimex.com/Products/DIY-Laptop/ Official product page]
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| − | * [https://www.olimex.com/forum/index.php?board=39.0 Manufacturer's forum]
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