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authorDaniel Palmer <daniel@0x0f.com>2020-07-28 12:03:14 +0200
committerArnd Bergmann <arnd@arndb.de>2020-07-28 13:15:47 +0200
commit9e30b098f25f525af048e685ccb79fc958cfd200 (patch)
treebd184745e5260b5db19a20936fd39114635cb510 /Documentation/devicetree/bindings/arm
parentdt-bindings: arm: mstar: Add binding details for mstar, pmsleep (diff)
downloadlinux-9e30b098f25f525af048e685ccb79fc958cfd200.tar.xz
linux-9e30b098f25f525af048e685ccb79fc958cfd200.zip
dt-bindings: arm: mstar: Move existing MStar binding descriptions
Now there is an mstar directory move the existing MStar specific descriptions into that directory. Signed-off-by: Daniel Palmer <daniel@0x0f.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/mstar/mstar,l3bridge.yaml44
-rw-r--r--Documentation/devicetree/bindings/arm/mstar/mstar.yaml (renamed from Documentation/devicetree/bindings/arm/mstar.yaml)2
2 files changed, 45 insertions, 1 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 000000000000..6816bd68f9cf
--- /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.yaml b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
index bdce34b3336e..c2f980b00b06 100644
--- a/Documentation/devicetree/bindings/arm/mstar.yaml
+++ b/Documentation/devicetree/bindings/arm/mstar/mstar.yaml
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
-$id: http://devicetree.org/schemas/arm/mstar.yaml#
+$id: http://devicetree.org/schemas/arm/mstar/mstar.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MStar platforms device tree bindings