Add reset and UART VDM support to tipd

Documentation/admin-guide/kernel-parameters.txt

@@ -3116,6 +3116,8 @@
 			* max_sec_lba48: Set or clear transfer size limit to
 			  65535 sectors.
 
+			* external: Mark port as external (hotplug-capable).
+
 			* [no]lpm: Enable or disable link power management.
 
 			* [no]setxfer: Indicate if transfer speed mode setting
@@ -7241,6 +7243,8 @@
 			This is just one of many ways that can clear memory. Make sure your system
 			keeps the content of memory across reboots before relying on this option.
 
+			NB: Both the mapped address and size must be page aligned for the architecture.
+
 			See also Documentation/trace/debugging.rst
 
 

Documentation/arch/arm64/booting.rst

@@ -288,6 +288,12 @@ Before jumping into the kernel, the following conditions must be met:
 
     - SCR_EL3.FGTEn (bit 27) must be initialised to 0b1.
 
+  For CPUs with the Fine Grained Traps 2 (FEAT_FGT2) extension present:
+
+  - If EL3 is present and the kernel is entered at EL2:
+
+    - SCR_EL3.FGTEn2 (bit 59) must be initialised to 0b1.
+
   For CPUs with support for HCRX_EL2 (FEAT_HCX) present:
 
   - If EL3 is present and the kernel is entered at EL2:
@@ -382,6 +388,22 @@ Before jumping into the kernel, the following conditions must be met:
 
     - SMCR_EL2.EZT0 (bit 30) must be initialised to 0b1.
 
+  For CPUs with the Performance Monitors Extension (FEAT_PMUv3p9):
+
+ - If EL3 is present:
+
+    - MDCR_EL3.EnPM2 (bit 7) must be initialised to 0b1.
+
+ - If the kernel is entered at EL1 and EL2 is present:
+
+    - HDFGRTR2_EL2.nPMICNTR_EL0 (bit 2) must be initialised to 0b1.
+    - HDFGRTR2_EL2.nPMICFILTR_EL0 (bit 3) must be initialised to 0b1.
+    - HDFGRTR2_EL2.nPMUACR_EL1 (bit 4) must be initialised to 0b1.
+
+    - HDFGWTR2_EL2.nPMICNTR_EL0 (bit 2) must be initialised to 0b1.
+    - HDFGWTR2_EL2.nPMICFILTR_EL0 (bit 3) must be initialised to 0b1.
+    - HDFGWTR2_EL2.nPMUACR_EL1 (bit 4) must be initialised to 0b1.
+
   For CPUs with Memory Copy and Memory Set instructions (FEAT_MOPS):
 
   - If the kernel is entered at EL1 and EL2 is present:

Documentation/arch/arm64/silicon-errata.rst

@@ -284,6 +284,8 @@ stable kernels.
 +----------------+-----------------+-----------------+-----------------------------+
 | Rockchip       | RK3588          | #3588001        | ROCKCHIP_ERRATUM_3588001    |
 +----------------+-----------------+-----------------+-----------------------------+
+| Rockchip       | RK3568          | #3568002        | ROCKCHIP_ERRATUM_3568002    |
++----------------+-----------------+-----------------+-----------------------------+
 +----------------+-----------------+-----------------+-----------------------------+
 | Fujitsu        | A64FX           | E#010001        | FUJITSU_ERRATUM_010001      |
 +----------------+-----------------+-----------------+-----------------------------+

Documentation/bpf/bpf_devel_QA.rst

@@ -382,6 +382,14 @@ In case of new BPF instructions, once the changes have been accepted
 into the Linux kernel, please implement support into LLVM's BPF back
 end. See LLVM_ section below for further information.
 
+Q: What "BPF_INTERNAL" symbol namespace is for?
+-----------------------------------------------
+A: Symbols exported as BPF_INTERNAL can only be used by BPF infrastructure
+like preload kernel modules with light skeleton. Most symbols outside
+of BPF_INTERNAL are not expected to be used by code outside of BPF either.
+Symbols may lack the designation because they predate the namespaces,
+or due to an oversight.
+
 Stable submission
 =================
 

Documentation/core-api/printk-formats.rst

@@ -648,6 +648,38 @@ Examples::
 	%p4cc	Y10  little-endian (0x20303159)
 	%p4cc	NV12 big-endian (0xb231564e)
 
+Generic FourCC code
+-------------------
+
+::
+	%p4c[hnbl]	gP00 (0x67503030)
+
+Print a generic FourCC code, as both ASCII characters and its numerical
+value as hexadecimal.
+
+The additional ``h``, ``r``, ``b``, and ``l`` specifiers are used to specify
+host, reversed, big or little endian order data respectively. Host endian
+order means the data is interpreted as a 32-bit integer and the most
+significant byte is printed first; that is, the character code as printed
+matches the byte order stored in memory on big-endian systems, and is reversed
+on little-endian systems.
+
+Passed by reference.
+
+Examples for a little-endian machine, given &(u32)0x67503030::
+
+	%p4ch	gP00 (0x67503030)
+	%p4cl	gP00 (0x67503030)
+	%p4cb	00Pg (0x30305067)
+	%p4cr	00Pg (0x30305067)
+
+Examples for a big-endian machine, given &(u32)0x67503030::
+
+	%p4ch	gP00 (0x67503030)
+	%p4cl	00Pg (0x30305067)
+	%p4cb	gP00 (0x67503030)
+	%p4cr	00Pg (0x30305067)
+
 Rust
 ----
 

Documentation/devicetree/bindings/arm/apple.yaml

@@ -57,6 +57,25 @@ description: |
   - iPad Pro (2nd Generation) (10.5 Inch)
   - iPad Pro (2nd Generation) (12.9 Inch)
 
+  Devices based on the "T2" SoC:
+
+  - Apple T2 MacBookPro15,2 (j132)
+  - Apple T2 iMacPro1,1 (j137)
+  - Apple T2 MacBookAir8,2 (j140a)
+  - Apple T2 MacBookAir8,1 (j140k)
+  - Apple T2 MacBookPro16,1 (j152f)
+  - Apple T2 MacPro7,1 (j160)
+  - Apple T2 Macmini8,1 (j174)
+  - Apple T2 iMac20,1 (j185)
+  - Apple T2 iMac20,2 (j185f)
+  - Apple T2 MacBookPro15,4 (j213)
+  - Apple T2 MacBookPro16,2 (j214k)
+  - Apple T2 MacBookPro16,4 (j215)
+  - Apple T2 MacBookPro16,3 (j223)
+  - Apple T2 MacBookAir9,1 (j230k)
+  - Apple T2 MacBookPro15,1 (j680)
+  - Apple T2 MacBookPro15,3 (j780)
+
   Devices based on the "A11" SoC:
 
   - iPhone 8
@@ -211,6 +230,28 @@ properties:
           - const: apple,t8011
           - const: apple,arm-platform
 
+      - description: Apple T2 SoC based platforms
+        items:
+          - enum:
+              - apple,j132  # Apple T2 MacBookPro15,2 (j132)
+              - apple,j137  # Apple T2 iMacPro1,1 (j137)
+              - apple,j140a # Apple T2 MacBookAir8,2 (j140a)
+              - apple,j140k # Apple T2 MacBookAir8,1 (j140k)
+              - apple,j152f # Apple T2 MacBookPro16,1 (j152f)
+              - apple,j160  # Apple T2 MacPro7,1 (j160)
+              - apple,j174  # Apple T2 Macmini8,1 (j174)
+              - apple,j185  # Apple T2 iMac20,1 (j185)
+              - apple,j185f # Apple T2 iMac20,2 (j185f)
+              - apple,j213  # Apple T2 MacBookPro15,4 (j213)
+              - apple,j214k # Apple T2 MacBookPro16,2 (j214k)
+              - apple,j215  # Apple T2 MacBookPro16,4 (j215)
+              - apple,j223  # Apple T2 MacBookPro16,3 (j223)
+              - apple,j230k # Apple T2 MacBookAir9,1 (j230k)
+              - apple,j680  # Apple T2 MacBookPro15,1 (j680)
+              - apple,j780  # Apple T2 MacBookPro15,3 (j780)
+          - const: apple,t8012
+          - const: apple,arm-platform
+
       - description: Apple A11 SoC based platforms
         items:
           - enum:

Documentation/devicetree/bindings/arm/apple/apple,pmgr.yaml

@@ -22,6 +22,11 @@ properties:
   compatible:
     items:
       - enum:
+          - apple,s5l8960x-pmgr
+          - apple,t7000-pmgr
+          - apple,s8000-pmgr
+          - apple,t8010-pmgr
+          - apple,t8015-pmgr
           - apple,t8103-pmgr
           - apple,t8112-pmgr
           - apple,t6000-pmgr

Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml

@@ -55,8 +55,7 @@ properties:
       - const: arm,primecell
 
   reg:
-    minItems: 1
-    maxItems: 2
+    maxItems: 1
 
   clocks:
     maxItems: 1

Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml

@@ -41,8 +41,7 @@ properties:
       - const: arm,primecell
 
   reg:
-    minItems: 1
-    maxItems: 2
+    maxItems: 1
 
   qcom,dsb-element-bits:
     description:

Documentation/devicetree/bindings/display/apple,h7-display-pipe-mipi.yaml

@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/apple,h7-display-pipe-mipi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple pre-DCP display controller MIPI interface
+
+maintainers:
+  - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description:
+  The MIPI controller part of the pre-DCP Apple display controller
+
+allOf:
+  - $ref: dsi-controller.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t8112-display-pipe-mipi
+          - apple,t8103-display-pipe-mipi
+      - const: apple,h7-display-pipe-mipi
+
+  reg:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input port. Always connected to the primary controller
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Output MIPI DSI port to the panel
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    dsi@28200000 {
+        compatible = "apple,t8103-display-pipe-mipi", "apple,h7-display-pipe-mipi";
+        reg = <0x28200000 0xc000>;
+        power-domains = <&ps_dispdfr_mipi>;
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+
+                dfr_adp_out_mipi: endpoint {
+                    remote-endpoint = <&dfr_adp_out_mipi>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+
+                dfr_panel_in: endpoint {
+                    remote-endpoint = <&dfr_mipi_out_panel>;
+                };
+            };
+        };
+    };
+...

Documentation/devicetree/bindings/display/apple,h7-display-pipe.yaml

@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/apple,h7-display-pipe.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple pre-DCP display controller
+
+maintainers:
+  - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description:
+  A secondary display controller used to drive the "touchbar" on
+  certain Apple laptops.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - apple,t8112-display-pipe
+          - apple,t8103-display-pipe
+      - const: apple,h7-display-pipe
+
+  reg:
+    items:
+      - description: Primary register block, controls planes and blending
+      - description:
+          Contains other configuration registers like interrupt
+          and FIFO control
+
+  reg-names:
+    items:
+      - const: be
+      - const: fe
+
+  power-domains:
+    description:
+      Phandles to pmgr entries that are needed for this controller to turn on.
+      Aside from that, their specific functions are unknown
+    maxItems: 2
+
+  interrupts:
+    items:
+      - description: Unknown function
+      - description: Primary interrupt. Vsync events are reported via it
+
+  interrupt-names:
+    items:
+      - const: be
+      - const: fe
+
+  iommus:
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    description: Output port. Always connected to apple,h7-display-pipe-mipi
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - port
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/apple-aic.h>
+    display-pipe@28200000 {
+        compatible = "apple,t8103-display-pipe", "apple,h7-display-pipe";
+        reg = <0x28200000 0xc000>,
+              <0x28400000 0x4000>;
+        reg-names = "be", "fe";
+        power-domains = <&ps_dispdfr_fe>, <&ps_dispdfr_be>;
+        interrupt-parent = <&aic>;
+        interrupts = <AIC_IRQ 502 IRQ_TYPE_LEVEL_HIGH>,
+                     <AIC_IRQ 506 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-names = "be", "fe";
+        iommus = <&displaydfr_dart 0>;
+
+        port {
+            dfr_adp_out_mipi: endpoint {
+                remote-endpoint = <&dfr_mipi_in_adp>;
+            };
+        };
+    };
+...