Re: [PATCH v2] arm64: dts: qcom: hamoa: Add PSCI SYSTEM_RESET2 types

From: Xin Liu

Date: Tue Sep 01 2026 - 02:41:57 EST


On 3/18/2026 9:42 PM, Bjorn Andersson wrote:
On Wed, Feb 25, 2026 at 09:41:13PM -0800, Xin Liu wrote:
Add support for SYSTEM_RESET2 vendor-specific resets as
reboot-modes in the psci node. Describe the resets: "bootloader"
will cause device to reboot and stop in the bootloader's fastboot
mode. "edl" will cause device to reboot into "emergency download
mode", which permits loading images via the Firehose protocol.

Signed-off-by: Xin Liu <xin.liu@xxxxxxxxxxxxxxxx>
How did you test this? I tried to apply this, but I'm getting 52 counts
of:

xyz.dtb: psci (arm,psci-1.0) 'reboot-mode' does not match any of the regexes: '^pinctrl-[0-9]+$', '^power-domain-'

Am I doing something wrong?

Regards,
Bjorn

Hi Bjorn,

Thanks for testing!

The warning is expected without the companion binding patch. This DTS change depends on:
change-id: 20250709-arm-psci-system_reset2-vendor-reboots-46c80044afcf
from Shivendra Pratap's series, which adds reboot-mode as a valid
child node in Documentation/devicetree/bindings/arm/psci.yaml.

Without that patch applied, the schema enforces additionalProperties:
false with no reboot-mode pattern, causing the check failures you see.


Regards,
Xin


---
Changes in v2:
- Fix mode-bootloader and mode-edl reset_type
- Link to v1 : https://lore.kernel.org/all/20260209042700.1186392-1-xin.liu@xxxxxxxxxxxxxxxx/

arch/arm64/boot/dts/qcom/hamoa.dtsi | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi
index db65c392e618..a1bd8c3e4061 100644
--- a/arch/arm64/boot/dts/qcom/hamoa.dtsi
+++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi
@@ -450,6 +450,11 @@ system_pd: power-domain-system {
#power-domain-cells = <0>;
/* TODO: system-wide idle states */
};
+
+ reboot-mode {
+ mode-bootloader = <0x80010001 0x2>;
+ mode-edl = <0x80000000 0x1>;
+ };
};
reserved-memory {
--
2.43.0