Samsung Galaxy Book2 Go support by z3ntu · Pull Request #31 · sc7280-mainline/linux

z3ntu · 2026-06-05T07:15:55Z

No description provided.

Signed-off-by: Jasper Korten <jja2000@gmail.com>

supposedly......... Signed-off-by: Jasper Korten <jja2000@gmail.com>

Signed-off-by: Jasper Korten <jja2000@gmail.com>

Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>

f-izzo · 2026-06-06T08:22:36Z

This kernel booted as is on a postmarketOS edge installation with "console" UI booted using the following cmdline, results in a blinking framebuffer that stays black after a few seconds. It completed the boot on Linux 6.16
plymouth.ignore-serial-consoles plymouth.prefer-fbcon pmos_boot_uuid=AB74-6FAF pmos_root_uuid=c17910cb-e3a8-4c2f-a6da-3ea836a8f4ad pmos_rootfsopts=defaults pmos.debug-shell console=tty1 video=efifb efi=novamap,noruntime deferred_probe_timeout=30 arm64.nopauth clk_ignore_unused pd_ignore_unused

By replacing the current usb nodes in the dts with these nodes taken from sc7280-idp.dts, the framebuffer works properly again, the USB stick I'm booting on gets detected, but it still fails with "ERROR: failed to mount subpartitions"

Edit: it was a problem with my WIP pmOS device package: Adding dtbloader to the depends of APKBUILD makes the system boot.

usb dts nodes

&usb_1 {
	dr_mode = "host";

	status = "okay";
};

&usb_1_hsphy {
	status = "okay";

	vdda-pll-supply = <&vreg_l10c_0p8>;
	vdda33-supply = <&vreg_l2b_3p0>;
	vdda18-supply = <&vreg_l1c_1p8>;
	qcom,hs-rise-fall-time-bp = <0>;
	qcom,squelch-detector-bp = <(-2090)>;
	qcom,hs-disconnect-bp = <1743>;
	qcom,hs-amplitude-bp = <1780>;
	qcom,hs-crossover-voltage-microvolt = <(-31000)>;
	qcom,hs-output-impedance-micro-ohms = <2600000>;
};

&usb_1_qmpphy {
	status = "okay";

	vdda-phy-supply = <&vreg_l6b_1p2>;
	vdda-pll-supply = <&vreg_l1b_0p8>;
};

f-izzo · 2026-06-06T10:42:59Z

I was able to make WiFi work by enabling the remoteproc nodes, replacing the wpss_mem region from kodiak.dtsi with the one from qcm6490-idp.dts, adding the ath firmware dependencies to the pmOS device package and copying the firmware files from Windows.

Here are two patches to fix USB and display (were broken on 7.0) and to enable WiFi (needs firmware packages and firmware files from the Windows installation)
0001-SQUASHME-arm64-dts-qcom-sc7280-samsung-galaxy-book2-.patch
0002-SQUASHME-arm64-dts-qcom-sc7280-samsung-galaxy-book2-.patch

f-izzo · 2026-06-07T08:40:45Z

I propose we rename all references to galaxy-book2-go to the internal codename: hermes2, which is shorter and follows what is done when supporting phones.

f-izzo · 2026-06-07T17:09:16Z

The display panel works as-is, as long as the following Kconfig options are enabled:

CONFIG_QCOM_PHY_EDP
CONFIG_BACKLIGHT_PWM
CONFIG_DRM_PANEL_EDP

They are not on sc7280_defconfig from linux-postmarketos-qcom-sc7280

f-izzo · 2026-06-07T17:15:47Z

+
+&mdss_edp_out {
+	data-lanes = <0 1 2 3>;
+	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;


data-lanes and link-frequencies are not needed, I tested it and panel works fine without them.

f-izzo · 2026-06-07T19:44:40Z

Enabling the GPU only requires enabling the dts node and copying the qcdxkmsuc7280.mbn (a660_zap.mbn) file from the Windows partition.
Patch attached.
0001-SQUASHME-arm64-dts-qcom-sc7280-samsung-galaxy-book2-gpu.patch

f-izzo · 2026-06-07T19:47:23Z

We need to decide whether to keep the android-style firmware names to make them easily recognizable (e.g. adsp.mbn, cdsp.mbn) or switch to the windows-style firmware names to avoid renaming them (qcadsp7280.mbn, qcdxkmsuc7280.mbn).

…or 7.0 kernel Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

…moteprocs and wifi Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>

jja2000 · 2026-06-10T14:05:15Z

In a comment, since it got nuked in the usb fixup commit for USB, I've mapped out how the usb lanes are divided over the ports. Results are based on the output given by HWiNFO. Expect windows'isms.

Root port 1 (single USB3 lane, single USB2 lane, usb_1):
- USB2.0 (hs): connected to internal 4-port hub (0424:2514)
  - Port 1: Left USB Type-C connector
  - Port 2: Right USB Type-C connector
  - Port 3: Right USB Type-A connector
  - Port 4: USB Webcam (04f2:b72f)
- USB3.0 (ss): Right USB Type-C connector
Root port 2 (single USB3 lane, usb_2):
- Unknown what these are used for, listed as (according to acpi ref) a connectable and user-visible micro-USB 3.0 port... Nonesuch to be seen on the outside anyway.

As far as capabilities per-port go, ACPI might be poorly written or muxing is working incorrectly. All are declared as USB3-compatible ports "with a switch" implying muxing, but when connecting actual devices, only the above configuration is possible.

For video, only the right USB Type-C connector seems to support DisplayPort out, left USB Type-C connector will throw up an error by the Samsung app that I should use the right side. Disabling the screen does not help in case the internal display is muxed.

seems our adsp firmware has audioreach and not elite. At least with elite probe nothing appears and audioreach we seem to get something. Let's see.

based on the DSDT

jja2000

In addition to the other comments w.r.t. the i2c addresses for the EMEC device (SAM0604), the following interrupts are also in that device node:

GpioInt (Level, ActiveLow, ExclusiveAndWake, PullUp, 0x0000,
    "\\_SB.GIO0", 0x00, ResourceConsumer, ,
    )
    {   // Pin list
        0x0300 // PDC, should be TLMM 101
    }
GpioInt (Edge, ActiveLow, ExclusiveAndWake, PullDefault, 0x0000,
    "\\_SB.GIO0", 0x00, ResourceConsumer, ,
    )
    {   // Pin list
        0x0280 // PDC, should be TLMM 20
    }
GpioInt (Level, ActiveLow, ExclusiveAndWake, PullUp, 0x0000,
    "\\_SB.GIO0", 0x00, ResourceConsumer, ,
    )
    {   // Pin list
        0x0340 // PDC, should be TLMM 103
    }
GpioInt (Edge, ActiveLow, ExclusiveAndWake, PullDefault, 0x0000,
     "\\_SB.GIO0", 0x00, ResourceConsumer, ,
    )
    {   // Pin list
        0x02C0 // PDC, should be TLMM 21
    }

Not sure what device they belong to specifically though...

jja2000 · 2026-06-11T07:55:36Z

+&i2c1 {
+	status = "okay";
+
+	// i2cdetect shows 0x31, 0x32, 0x33, 0x34, 0x49


ACPI says EMEC device (SAM0604) should be connected to i2c1 at address 0x14 and 0x33

jja2000 · 2026-06-11T07:56:27Z

+&i2c10 {
+	status = "okay";
+
+	// i2cdetect shows 0x09, 0x0b


Both of these belong to the EMEC device (SAM0604)

jja2000 · 2026-06-11T07:59:34Z

+
+	// i2cdetect shows 0x20, 0x21
+};
+


ACPI says EMEC (SAM0604) is connected to i2c3 on address 0x14 and 0x33

jja2000 · 2026-06-11T08:02:14Z

+
+	// i2cdetect shows 0x1d
+};
+


ACPI says EMEC (SAM0604) is connected to i2c8 on address 0x10

jja2000 · 2026-06-11T08:04:15Z

+
+	// i2cdetect shows 0x0d
+};
+


ACPI says EMEC (SAM0604) is connected to i2c13 on address 0x2C

jja2000 · 2026-06-11T11:37:45Z

+};
+
+// \\_SB.I2C3 -- has SAMM0210 at 0x20 (SAR2) & 0x21 (SAR3) with interrupt
+// https://treexy.com/products/driver-fusion/database/sensors/samsung/a96t396-proximity/


Grip sensor has no driver upstream, but there are Samsung phones with downstream drivers that have it, like the A25 5G.

Will update the comment with the right interrupt pin.

jja2000 · 2026-06-11T11:44:36Z

+};
+
+// \\_SB.I2C5 -- has SAMM0214 / ACC1 at 0x1d with interrupt
+// https://treexy.com/products/driver-fusion/database/sensors/samsung/lis2dlc12-accelerometer-device/


Probably compatible with st-accel, not sure what compatible exactly.

Matrix seems to be defined in the DSDT.

Will update comment with the right interrupt pin.

I agree it should be compatible with the driver, at least after some lis2dlc12-specific addition. Haven't looked around too much yet, but I can't find the sensor on the ST website but there's more mentions of this part number than just related to this laptop. No datasheet found of course.

jja2000 and others added 11 commits June 5, 2026 09:14

WIP: arm64: dts: qcom: Add Device Tree for the Samsung Galaxy Book2 Go

0ec598c

Signed-off-by: Jasper Korten <jja2000@gmail.com>

WIP: dts: book2go: add touchpad, keyboard, ufs and hall

95bd501

supposedly......... Signed-off-by: Jasper Korten <jja2000@gmail.com>

SQUASHME: Add more includes and headers

62d6c11

Signed-off-by: Jasper Korten <jja2000@gmail.com>

WIP: Samsung GB2GO updates

58c3ec2

Signed-off-by: Jasper Korten <jja2000@gmail.com>

SQUASHME: Touchpad and Keyboard are now working

e07be59

Signed-off-by: Jasper Korten <jja2000@gmail.com>

SQUASHME: UFS

180a698

Signed-off-by: Jasper Korten <jja2000@gmail.com>

drm/panel-edp: Add AUO B140HAN04.0 (0x65a9) panel entry

89b0342

Signed-off-by: Jasper Korten <jja2000@gmail.com>

WIP: arm64: dts: qcom: sc7280-samsung-galaxy-book2-go: enable panel

2459b9b

Signed-off-by: Jasper Korten <jja2000@gmail.com>

SQUASHME: arm64: dts: qcom: sc7280-samsung-galaxy-book2-go Enable UFS

2c8ea61

Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

book2go 7.0 fixups

b8c98d4

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>

fixup! defconfig: add fp5_defconfig

ae48d3a

f-izzo reviewed Jun 7, 2026

View reviewed changes

f-izzo and others added 8 commits June 8, 2026 12:00

SQUASHME: arm64: dts: qcom: sc7280-samsung-galaxy-book2-go: fix usb f…

81ed949

…or 7.0 kernel Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

SQUASHME: arm64: dts: qcom: sc7280-samsung-galaxy-book2-go: enable re…

2b7fdfe

…moteprocs and wifi Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

SQUASHME: arm64: dts: qcom: sc7280-samsung-galaxy-book2-go: enable gpu

d67ff97

Signed-off-by: Federico Amedeo Izzo <federico@izzo.pro>

fixup! defconfig: add fp5_defconfig

93c3a8c

fixup! defconfig: add fp5_defconfig

1a43215

book2go enable power key

550f577

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>

book2go enable sd card

9f67d16

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>

book2go fixup formatting

e8ae9b2

Signed-off-by: Luca Weiss <luca@lucaweiss.eu>

z3ntu added 3 commits June 10, 2026 20:25

book2go move i2c nodes to correct place

2cfe3b9

fixup! defconfig: add fp5_defconfig

7bd2baa

book2go use audioreach

993ba74

seems our adsp firmware has audioreach and not elite. At least with elite probe nothing appears and audioreach we seem to get something. Let's see.

book2go enable more i2c busses

150b29b

based on the DSDT

jja2000 reviewed Jun 11, 2026

View reviewed changes

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f-izzo commented Jun 6, 2026 •

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