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Message-Id: <03e43e97941df238ef1a618852aecd7be68adbb0.1716974502.git.geert+renesas@glider.be>
Date: Wed, 29 May 2024 11:29:30 +0200
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Magnus Damm <magnus.damm@...il.com>,
Linus Walleij <linus.walleij@...aro.org>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc: devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org,
linux-gpio@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 1/8] dt-bindings: fuse: Document R-Car E-FUSE / PFC
Document support for E-FUSE non-volatile memory accessible through PFC
on R-Car V3U and S4-8.
Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
---
v2:
- Add Reviewed-by.
---
.../bindings/fuse/renesas,rcar-efuse.yaml | 55 +++++++++++++++++++
1 file changed, 55 insertions(+)
create mode 100644 Documentation/devicetree/bindings/fuse/renesas,rcar-efuse.yaml
diff --git a/Documentation/devicetree/bindings/fuse/renesas,rcar-efuse.yaml b/Documentation/devicetree/bindings/fuse/renesas,rcar-efuse.yaml
new file mode 100644
index 0000000000000000..d7e289244e72cce1
--- /dev/null
+++ b/Documentation/devicetree/bindings/fuse/renesas,rcar-efuse.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fuse/renesas,rcar-efuse.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: R-Car E-FUSE connected to PFC
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@...der.be>
+
+description:
+ The E-FUSE is a type of non-volatile memory, which is accessible through the
+ Pin Function Controller (PFC) on some R-Car Gen4 SoCs.
+
+properties:
+ compatible:
+ enum:
+ - renesas,r8a779a0-efuse # R-Car V3U
+ - renesas,r8a779f0-efuse # R-Car S4-8
+
+ reg:
+ maxItems: 1
+ description: PFC System Group Fuse Control and Monitor register block
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - power-domains
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a779a0-cpg-mssr.h>
+ #include <dt-bindings/power/r8a779a0-sysc.h>
+
+ fuse: fuse@...78800 {
+ compatible = "renesas,r8a779a0-efuse";
+ reg = <0xe6078800 0x100>;
+ clocks = <&cpg CPG_MOD 916>;
+ power-domains = <&sysc R8A779A0_PD_ALWAYS_ON>;
+ resets = <&cpg 916>;
+ };
--
2.34.1
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