2022-08-12 00:05:10 +00:00
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{ lib, pkgs, ... }:
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2022-08-09 22:26:41 +00:00
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let
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# use the last commit on the 5.18 branch (5.18.14)
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# manjaro's changes between kernel patch versions tend to be minimal if any.
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manjaroBase = "https://gitlab.manjaro.org/manjaro-arm/packages/core/linux/-/raw/25bd828cd47b1c6e09fcbcf394a649b89d2876dd";
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manjaroPatch = name: sha256: {
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inherit name;
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patch = pkgs.fetchpatch {
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inherit name;
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url = "${manjaroBase}/${name}?inline=false";
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inherit sha256;
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};
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};
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# the idea for patching off Manjaro's kernel comes from jakewaksbaum:
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# - https://git.sr.ht/~jakewaksbaum/pi/tree/af20aae5653545d6e67a459b59ee3e1ca8a680b0/item/kernel/default.nix
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# - he later abandoned this, i think because he's using the Pinephone Pro which received mainline support.
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manjaroPatches = [
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(manjaroPatch
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"1001-arm64-dts-allwinner-add-hdmi-sound-to-pine-devices.patch"
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"sha256-DApd791A+AxB28Ven/MVAyuyVphdo8KQDx8O7oxVPnc="
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)
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# these patches below are critical to enable wifi (RTL8723CS)
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# - the alternative is a wholly forked kernel by megi/megous:
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# - https://xnux.eu/howtos/build-pinephone-kernel.html#toc-how-to-build-megi-s-pinehpone-kernel
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# - i don't know if these patches are based on megi's or original
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(manjaroPatch
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"2001-Bluetooth-Add-new-quirk-for-broken-local-ext-features.patch"
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"sha256-CExhJuUWivegxPdnzKINEsKrMFx/m/1kOZFmlZ2SEOc="
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)
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(manjaroPatch
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"2002-Bluetooth-btrtl-add-support-for-the-RTL8723CS.patch"
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"sha256-dDdvOphTcP/Aog93HyH+L9m55laTgtjndPSE4/rnzUA="
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)
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(manjaroPatch
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"2004-arm64-dts-allwinner-enable-bluetooth-pinetab-pinepho.patch"
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"sha256-o43P3WzXyHK1PF+Kdter4asuyGAEKO6wf5ixcco2kCQ="
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)
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# XXX: this one has a Makefile, which hardcodes /sbin/depmod:
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# - drivers/staging/rtl8723cs/Makefile
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# - not sure if this is problematic?
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(manjaroPatch
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"2005-staging-add-rtl8723cs-driver.patch"
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"sha256-6ywm3dQQ5JYl60CLKarxlSUukwi4QzqctCj3tVgzFbo="
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)
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];
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# pinephone uses the linux dtb at arch/arm64/boot/dts/allwinner/sun50i-a64-pinephone.dtsi
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# - this includes sun50i-a64.dtsi
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# - and sun50i-a64-cpu-opp.dtsi
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# - no need to touch the allwinner-h6 stuff: that's the SBC pine product
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# - i think it's safe to ignore sun9i stuff, but i don't know what it is
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kernelConfig = with lib.kernel; {
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# NB: nix adds the CONFIG_ prefix to each of these.
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# if you add the prefix yourself nix will IGNORE YOUR CONFIG.
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RTL8723CS = module;
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BT_HCIUART_3WIRE = yes;
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BT_HCIUART_RTL = yes;
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RTL8XXXU_UNTESTED = yes;
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BT_BNEP_MC_FILTER = yes;
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BT_BNEP_PROTO_FILTER = yes;
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BT_HS = yes;
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BT_LE = yes;
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# relevant configs inherited from nixos defaults (or above additions):
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# CONFIG_BT=m
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# CONFIG_BT_BREDR=y
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# CONFIG_BT_RFCOMM=m
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# CONFIG_BT_RFCOMM_TTY=y
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# CONFIG_BT_BNEP=m
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# CONFIG_BT_HIDP=m
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# CONFIG_BT_RTL=m
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# CONFIG_BT_HCIBTUSB=m
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# CONFIG_BT_HCIBTUSB_BCM=y
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# CONFIG_BT_HCIBTUSB_RTL=y
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# CONFIG_BT_HCIUART=m
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# CONFIG_BT_HCIUART_SERDEV=y
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# CONFIG_BT_HCIUART_H4=y
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# CONFIG_BT_HCIUART_LL=y
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# CONFIG_RTL_CARDS=m
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# CONFIG_RTLWIFI=m
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# CONFIG_RTLWIFI_PCI=m
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# CONFIG_RTLWIFI_USB=m
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# CONFIG_RTLWIFI_DEBUG=y
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# CONFIG_RTL8723_COMMON=m
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# CONFIG_RTLBTCOEXIST=m
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# CONFIG_RTL8XXXU=m
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# CONFIG_RTLLIB=m
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# consider adding (from mobile-nixos):
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# maybe: CONFIG_BT_HCIUART_3WIRE=y
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# maybe: CONFIG_BT_HCIUART_RTL=y
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# maybe: CONFIG_RTL8XXXU_UNTESTED=y
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# consider adding (from manjaro):
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# CONFIG_BT_6LOWPAN=m (not listed as option in nixos kernel)
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# these are referenced in the rtl8723 source, but not known to config (and not in mobile-nixos config
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# maybe: CONFIG_RTL_ODM_WLAN_DRIVER
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# maybe: CONFIG_RTL_TRIBAND_SUPPORT
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# maybe: CONFIG_SDIO_HCI
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# maybe: CONFIG_USB_HCI
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};
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# create a kernelPatch which overrides nixos' defconfig with extra options
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patchDefconfig = config: {
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# defconfig options. this method comes from here:
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# - https://discourse.nixos.org/t/the-correct-way-to-override-the-latest-kernel-config/533/9
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name = "sane-moby-defconfig";
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patch = null;
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extraStructuredConfig = config;
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};
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in
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{
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2022-08-10 01:01:48 +00:00
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# use Megi's kernel:
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# even with the Manjaro patches, stock 5.18 has a few issues on Pinephone:
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# - no battery charging
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# - phone rotation sensor is off by 90 degrees
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# - ambient light sensor causes screen brightness to be shakey
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# - phosh greeter may not appear after wake from sleep
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2023-02-14 10:19:32 +00:00
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boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux-megous;
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2022-08-10 01:01:48 +00:00
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boot.kernelPatches = [
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(patchDefconfig (kernelConfig //
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(with lib.kernel; {
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# disabling the sun5i_eink driver avoids this compilation error:
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# CC [M] drivers/video/fbdev/sun5i-eink-neon.o
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# aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfloat-abi=softfp'
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# aarch64-unknown-linux-gnu-gcc: error: unrecognized command line option '-mfpu=neon'
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# make[3]: *** [../scripts/Makefile.build:289: drivers/video/fbdev/sun5i-eink-neon.o] Error 1
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FB_SUN5I_EINK = no;
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2023-01-13 04:39:47 +00:00
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# used by the pinephone pro, but fails to compile with:
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# ../drivers/media/i2c/ov8858.c:1834:27: error: implicit declaration of function 'compat_ptr'
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VIDEO_OV8858 = no;
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2022-08-10 01:01:48 +00:00
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})
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))
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];
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2022-08-09 22:26:41 +00:00
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2022-08-12 00:02:41 +00:00
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# alternatively, use nixos' kernel and add the stuff we want:
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2022-08-10 01:01:48 +00:00
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# # cross-compilation optimization:
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# boot.kernelPackages =
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# let p = (import nixpkgs { localSystem = "x86_64-linux"; });
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# in p.pkgsCross.aarch64-multiplatform.linuxPackages_5_18;
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# # non-cross:
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# # boot.kernelPackages = pkgs.linuxPackages_5_18;
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2022-08-09 22:26:41 +00:00
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2022-08-10 01:01:48 +00:00
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# boot.kernelPatches = manjaroPatches ++ [
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# (patchDefconfig kernelConfig)
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# ];
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2022-08-09 22:26:41 +00:00
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}
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