qualcomm-linux · sgaud-quic · Dec 20, 2025 · Jan 26, 2026 · Jan 26, 2026 · Jan 26, 2026
diff --git a/Documentation/ABI/testing/configfs-stp-policy-p_ost b/Documentation/ABI/testing/configfs-stp-policy-p_ost
@@ -0,0 +1,6 @@
+What:		/config/stp-policy/<device>:p_ost.<policy>/<node>/entity
+Date:		Jan 2026
+KernelVersion:	6.20
+Description:
+		Set the entity which is to identify the source, RW.
+
diff --git a/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu b/Documentation/ABI/testing/sysfs-bus-amba-devices-tgu
@@ -0,0 +1,51 @@
+What:		/sys/bus/amba/devices/<tgu-name>/enable_tgu
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the enable/disable status of TGU
+		Accepts only one of the 2 values -  0 or 1.
+		0 : disable TGU.
+		1 : enable TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_priority[0:3]/reg[0:17]
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the sensed signal with specific step and priority for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_condition_decode/reg[0:3]
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the decode mode with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_condition_select/reg[0:3]
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the next action with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_timer/reg[0:1]
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the timer value with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/step[0:7]_counter/reg[0:1]
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(RW) Set/Get the counter value with specific step for TGU.
+
+What:		/sys/bus/amba/devices/<tgu-name>/reset_tgu
+Date:		January 2026
+KernelVersion	6.19
+Contact:	Jinlong Mao <jinlong.mao@oss.qualcomm.com>, Songwei Chai <songwei.chai@oss.qualcomm.com>
+Description:
+		(Write) Write 1 to reset the dataset for TGU.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-ctcu b/Documentation/ABI/testing/sysfs-bus-coresight-devices-ctcu
@@ -0,0 +1,8 @@
+What:           /sys/bus/coresight/devices/<ctcu-name>/irq_threshold[0:1]
+Date:           February 2026
+KernelVersion:  7.1
+Contact:        Tingwei Zhang <tingwei.zhang@oss.qualcomm.com>; Jinlong Mao <jinlong.mao@oss.qualcomm.com>; Jie Gan <jie.gan@oss.qualcomm.com>
+Description:
+		(RW) Configure the byte-cntr IRQ register for the specified ETR device
+		based on its port number. An interrupt is generated when the data size
+		exceeds the value set in the IRQ register.
diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti b/Documentation/ABI/testing/sysfs-bus-coresight-devices-cti
@@ -245,3 +245,14 @@ Date:           Aug 2025
 KernelVersion   6.18
 Contact:        Mao Jinlong <quic_jinlmao@quicinc.com>
 Description:    (Read) Show hardware context information of device.
+
+What:           /sys/bus/coresight/devices/<cti-name>/regs/ext_reg_sel
+Date:           Dec 2025
+KernelVersion:  6.19
+Contact:        Mao Jinlong <jinlong.mao@oss.qualcomm.com>
+Description:    (RW) Select the index for extended registers.
+		QCOM CTI supports up to 128 triggers, there are 6 registers
+		need to be expanded to up to 4 instances:
+		CTITRIGINSTATUS, CTITRIGOUTSTATUS,
+		ITTRIGIN, ITTRIGOUT,
+		ITTRIGINACK, ITTRIGOUTACK.
diff --git a/Documentation/ABI/testing/sysfs-class-reboot-mode-reboot_modes b/Documentation/ABI/testing/sysfs-class-reboot-mode-reboot_modes
@@ -0,0 +1,39 @@
+What:		/sys/class/reboot-mode/<driver>/reboot_modes
+Date:		August 2025
+KernelVersion:	6.17.0-rc1
+Contact:	linux-pm@vger.kernel.org
+		Description:
+		This interface exposes the reboot-mode arguments
+		registered with the reboot-mode framework. It is
+		a read-only interface and provides a space
+		separated list of reboot-mode arguments supported
+		on the current platform.
+		Example:
+		 recovery fastboot bootloader
+
+		The exact sysfs path may vary depending on the
+		name of the driver that registers the arguments.
+		Example:
+		 /sys/class/reboot-mode/nvmem-reboot-mode/reboot_modes
+		 /sys/class/reboot-mode/syscon-reboot-mode/reboot_modes
+		 /sys/class/reboot-mode/qcom-pon/reboot_modes
+
+		The supported arguments can be used by userspace
+		to invoke device reset using the reboot() system
+		call, with the "argument" as string to "*arg"
+		parameter along with LINUX_REBOOT_CMD_RESTART2.
+		Example:
+		 reboot(LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
+		        LINUX_REBOOT_CMD_RESTART2, "bootloader");
+
+		A driver can expose the supported arguments by
+		registering them with the reboot-mode framework
+		using the property names that follow the
+		mode-<argument> format.
+		Example:
+		 mode-bootloader, mode-recovery.
+
+		This attribute is useful for scripts or initramfs
+		logic that need to programmatically determine
+		which reboot-mode arguments are valid before
+		triggering a reboot.
diff --git a/Documentation/ABI/testing/sysfs-driver-eud b/Documentation/ABI/testing/sysfs-driver-eud
@@ -7,3 +7,19 @@ Description:
 		EUD based on a 1 or a 0 value. By enabling EUD,
 		the user is able to activate the mini-usb hub of
 		EUD for debug and trace capabilities.
+
+What:		/sys/bus/platform/drivers/qcom_eud/.../port
+Date:		January 2026
+Contact:	Elson Serrao <elson.serrao@oss.qualcomm.com>
+Description:
+		Selects which USB port the Embedded USB Debugger (EUD)
+		is mapped to on platforms providing multiple High-Speed
+		USB ports.
+
+		Valid values:
+		  0 - Primary USB port
+		  1 - Secondary USB port
+
+		The attribute is writable only while EUD is disabled.
+		Reading the attribute returns the currently selected
+		USB port number.
diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-dynamic-funnel.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-dynamic-funnel.yaml
@@ -57,6 +57,11 @@ properties:
   power-domains:
     maxItems: 1
 
+  qcom,cpu-bound-components:
+    type: boolean
+    description:
+      Indicates whether the funnel is located physically within cpu cluster.
+
   label:
     description:
       Description of a coresight device.

diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-dynamic-replicator.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-dynamic-replicator.yaml
@@ -67,6 +67,11 @@ properties:
       Indicates that the replicator will lose register context when AMBA clock
       is removed which is observed in some replicator designs.
 
+  qcom,cpu-bound-components:
+    type: boolean
+    description:
+      Indicates whether the replicator is located physically within cpu cluster.
+
   in-ports:
     $ref: /schemas/graph.yaml#/properties/ports
     additionalProperties: false

diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml
@@ -86,6 +86,11 @@ properties:
     $ref: /schemas/types.yaml#/definitions/uint32
     maximum: 15
 
+  qcom,cpu-bound-components:
+    type: boolean
+    description:
+      indicates whether the TMC-ETF is located physically within cpu cluster.
+
   in-ports:
     $ref: /schemas/graph.yaml#/properties/ports
     additionalProperties: false

diff --git a/Documentation/devicetree/bindings/arm/psci.yaml b/Documentation/devicetree/bindings/arm/psci.yaml
@@ -98,6 +98,27 @@ properties:
       [1] Kernel documentation - ARM idle states bindings
         Documentation/devicetree/bindings/cpu/idle-states.yaml
 
+  reboot-mode:
+    type: object
+    $ref: /schemas/power/reset/reboot-mode.yaml#
+    unevaluatedProperties: false
+    properties:
+      # "mode-normal" is just SYSTEM_RESET
+      mode-normal: false
+    patternProperties:
+      "^mode-.*$":
+        minItems: 1
+        maxItems: 2
+        description: |
+          Describes a vendor-specific reset type. The string after "mode-"
+          maps a reboot mode to the parameters in the PSCI SYSTEM_RESET2 call.
+
+          Parameters are named mode-xxx = <type[, cookie]>, where xxx
+          is the name of the magic reboot mode, type is the lower 31 bits
+          of the reset_type, and, optionally, the cookie value. If the cookie
+          is not provided, it is defaulted to zero.
+          The 31st bit (vendor-resets) will be implicitly set by the driver.
+
 patternProperties:
   "^power-domain-":
     $ref: /schemas/power/power-domain.yaml#
@@ -137,6 +158,15 @@ allOf:
       required:
         - cpu_off
         - cpu_on
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              const: arm,psci-1.0
+    then:
+      properties:
+        reboot-mode: false
 
 additionalProperties: false
 
@@ -260,4 +290,17 @@ examples:
         domain-idle-states = <&cluster_ret>, <&cluster_pwrdn>;
       };
     };
+
+  - |+
+
+    // Case 5: SYSTEM_RESET2 vendor resets
+    psci {
+      compatible = "arm,psci-1.0";
+      method = "smc";
+
+      reboot-mode {
+        mode-edl = <0>;
+        mode-bootloader = <1 2>;
+      };
+    };
 ...
diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml
@@ -29,7 +29,11 @@ properties:
     oneOf:
       - items:
           - enum:
+              - qcom,glymur-ctcu
+              - qcom,kaanapali-ctcu
               - qcom,qcs8300-ctcu
+              - qcom,sm8750-ctcu
+              - qcom,x1e80100-ctcu
           - const: qcom,sa8775p-ctcu
       - enum:
           - qcom,sa8775p-ctcu
@@ -44,6 +48,11 @@ properties:
     items:
       - const: apb
 
+  interrupts:
+    items:
+      - description: Interrupt for the ETR device connected to in-port0.
+      - description: Interrupt for the ETR device connected to in-port1.
+
   label:
     description:
       Description of a coresight device.
@@ -65,13 +74,18 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
     ctcu@1001000 {
         compatible = "qcom,sa8775p-ctcu";
         reg = <0x1001000 0x1000>;
 
         clocks = <&aoss_qmp>;
         clock-names = "apb";
 
+        interrupts = <GIC_SPI 270 IRQ_TYPE_EDGE_RISING>,
+                     <GIC_SPI 262 IRQ_TYPE_EDGE_RISING>;
+
         in-ports {
             #address-cells = <1>;
             #size-cells = <0>;

diff --git a/Documentation/devicetree/bindings/arm/qcom,tgu.yaml b/Documentation/devicetree/bindings/arm/qcom,tgu.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+# Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,tgu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trigger Generation Unit - TGU
+
+description: |
+  The Trigger Generation Unit (TGU) is a Data Engine which can be utilized
+  to sense a plurality of signals and create a trigger into the CTI or
+  generate interrupts to processors. The TGU is like the trigger circuit
+  of a Logic Analyzer. The corresponding trigger logic can be realized by
+  configuring the conditions for each step after sensing the signal.
+  Once setup and enabled, it will observe sense inputs and based upon
+  the activity of those inputs, even over clock cycles, may detect a
+  preprogrammed state/sequence and then produce a trigger or interrupt.
+
+  The primary use case of the TGU is to detect patterns or sequences on a
+  given set of signals within some region to identify the issue in time
+  once there is abnormal behavior in the subsystem.
+
+maintainers:
+  - Mao Jinlong <jinlong.mao@oss.qualcomm.com>
+  - Songwei Chai <songwei.chai@oss.qualcomm.com>
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,tgu
+  required:
+    - compatible
+
+properties:
+  compatible:
+    items:
+      - const: qcom,tgu
+      - const: arm,primecell
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: apb_pclk
+
+  in-ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    additionalProperties: false
+
+    properties:
+      port:
+        description:
+          The port mechanism here ensures the relationship between TGU and
+          TPDM, as TPDM is one of the inputs for TGU. It will allow TGU to
+          function as TPDM's helper and enable TGU when the connected
+          TPDM is enabled.
+        $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    tgu@10b0e000 {
+        compatible = "qcom,tgu", "arm,primecell";
+        reg = <0x10b0e000 0x1000>;
+
+        clocks = <&aoss_qmp>;
+        clock-names = "apb_pclk";
+
+        in-ports {
+            port {
+                tgu_in_tpdm_swao: endpoint{
+                    remote-endpoint = <&tpdm_swao_out_tgu>;
+                };
+            };
+        };
+    };
+...