Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

3 files changed, 130 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar,l3bridge.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar,l3bridge.yaml
new file mode 100644
index 0000000000..a8ac4a2d67
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar,l3bridge.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 thingy.jp.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/mstar/mstar,l3bridge.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MStar/SigmaStar Armv7 SoC l3bridge
+
+maintainers:
+  - Daniel Palmer <daniel@thingy.jp>
+
+description: |
+  MStar/SigmaStar's Armv7 SoCs have a pipeline in the interface
+  between the CPU and memory. This means that before DMA capable
+  devices are allowed to run the pipeline must be flushed to ensure
+  everything is in memory.
+
+  The l3bridge region contains registers that allow such a flush
+  to be triggered.
+
+  This node is used by the platform code to find where the registers
+  are and install a barrier that triggers the required pipeline flush.
+
+properties:
+  compatible:
+    items:
+      - const: mstar,l3bridge
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    l3bridge: l3bridge@1f204400 {
+        compatible = "mstar,l3bridge";
+        reg = <0x1f204400 0x200>;
+    };
diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml
new file mode 100644
index 0000000000..5739848000
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar,smpctrl.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 thingy.jp.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/mstar/mstar,smpctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MStar/SigmaStar Armv7 SoC SMP control registers
+
+maintainers:
+  - Daniel Palmer <daniel@thingy.jp>
+
+description: |
+  MStar/SigmaStar's Armv7 SoCs that have more than one processor
+  have a region of registers that allow setting the boot address
+  and a magic number that allows secondary processors to leave
+  the loop they are parked in by the boot ROM.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - sstar,ssd201-smpctrl # SSD201/SSD202D
+      - const: mstar,smpctrl
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    smpctrl@204000 {
+        compatible = "sstar,ssd201-smpctrl", "mstar,smpctrl";
+        reg = <0x204000 0x200>;
+    };
diff --git a/Documentation/devicetree/bindings/arm/mstar/mstar.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
new file mode 100644
index 0000000000..937059fcc7
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/mstar/mstar.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MStar platforms
+
+maintainers:
+  - Daniel Palmer <daniel@thingy.jp>
+
+properties:
+  $nodename:
+    const: '/'
+  compatible:
+    oneOf:
+      - description: infinity boards
+        items:
+          - enum:
+              - thingyjp,breadbee-crust # thingy.jp BreadBee Crust
+          - const: mstar,infinity
+
+      - description: infinity2m boards
+        items:
+          - enum:
+              - 100ask,dongshanpione # 100ask DongShanPiOne
+              - honestar,ssd201htv2 # Honestar SSD201_HT_V2 devkit
+              - m5stack,unitv2 # M5Stack UnitV2
+              - miyoo,miyoo-mini # Miyoo Mini
+              - wirelesstag,ido-som2d01 # Wireless Tag IDO-SOM2D01
+              - wirelesstag,ido-sbc2d06-v1b-22w # Wireless Tag IDO-SBC2D06-1VB-22W
+          - const: mstar,infinity2m
+
+      - description: infinity3 boards
+        items:
+          - enum:
+              - thingyjp,breadbee # thingy.jp BreadBee
+          - const: mstar,infinity3
+
+      - description: mercury5 boards
+        items:
+          - enum:
+              - 70mai,midrived08 # 70mai midrive d08
+          - const: mstar,mercury5
+
+additionalProperties: true