The Allwinner SRAM bindings list only compatible so integrate them into
generic SRAM bindings schema.
Signed-off-by: Krzysztof Kozlowski <k...@kernel.org>
---
Changes since v3:
1. New patch
---
.../bindings/arm/sunxi/smp-sram.txt | 44 -------------------
.../devicetree/bindings/sram/sram.yaml | 25 +++++++++++
2 files changed, 25 insertions(+), 44 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/arm/sunxi/smp-sram.txt
diff --git a/Documentation/devicetree/bindings/arm/sunxi/smp-sram.txt
b/Documentation/devicetree/bindings/arm/sunxi/smp-sram.txt
deleted file mode 100644
index 082e6a9382d3..000000000000
--- a/Documentation/devicetree/bindings/arm/sunxi/smp-sram.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-Allwinner SRAM for smp bringup:
-------------------------------------------------
-
-Allwinner's A80 SoC uses part of the secure sram for hotplugging of the
-primary core (cpu0). Once the core gets powered up it checks if a magic
-value is set at a specific location. If it is then the BROM will jump
-to the software entry address, instead of executing a standard boot.
-
-Therefore a reserved section sub-node has to be added to the mmio-sram
-declaration.
-
-Note that this is separate from the Allwinner SRAM controller found in
-../../sram/sunxi-sram.txt. This SRAM is secure only and not mappable to
-any device.
-
-Also there are no "secure-only" properties. The implementation should
-check if this SRAM is usable first.
-
-Required sub-node properties:
-- compatible : depending on the SoC this should be one of:
- "allwinner,sun9i-a80-smp-sram"
-
-The rest of the properties should follow the generic mmio-sram discription
-found in ../../misc/sram.txt
-
-Example:
-
- sram_b: sram@20000 {
- /* 256 KiB secure SRAM at 0x20000 */
- compatible = "mmio-sram";
- reg = <0x00020000 0x40000>;
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0 0x00020000 0x40000>;
-
- smp-sram@1000 {
- /*
- * This is checked by BROM to determine if
- * cpu0 should jump to SMP entry vector
- */
- compatible = "allwinner,sun9i-a80-smp-sram";
- reg = <0x1000 0x8>;
- };
- };
diff --git a/Documentation/devicetree/bindings/sram/sram.yaml
b/Documentation/devicetree/bindings/sram/sram.yaml
index 1c2d8b0408c0..95d8cc7e2b87 100644
--- a/Documentation/devicetree/bindings/sram/sram.yaml
+++ b/Documentation/devicetree/bindings/sram/sram.yaml
@@ -65,6 +65,7 @@ patternProperties:
Should contain a vendor specific string in the form
<vendor>,[<device>-]<usage>
enum:
+ - allwinner,sun9i-a80-smp-sram
- amlogic,meson8-smp-sram
- amlogic,meson8b-smp-sram
- renesas,smp-sram
@@ -216,3 +217,27 @@ examples:
reg = <0x10080000 0x50>;
};
};
+
+ - |
+ // Allwinner's A80 SoC uses part of the secure sram for hotplugging of the
+ // primary core (cpu0). Once the core gets powered up it checks if a magic
+ // value is set at a specific location. If it is then the BROM will jump
+ // to the software entry address, instead of executing a standard boot.
+ //
+ // Also there are no "secure-only" properties. The implementation should
+ // check if this SRAM is usable first.
+ sram@20000 {
+ // 256 KiB secure SRAM at 0x20000
+ compatible = "mmio-sram";
+ reg = <0x00020000 0x40000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x00020000 0x40000>;
+
+ smp-sram@1000 {
+ // This is checked by BROM to determine if
+ // cpu0 should jump to SMP entry vector
+ compatible = "allwinner,sun9i-a80-smp-sram";
+ reg = <0x1000 0x8>;
+ };
+ };
--
2.17.1
