From 8d6c65bd91bdccf98109916dc2d558af6c89396a Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Tue, 19 May 2020 10:08:12 +0200 Subject: [PATCH] dt-bindings: memory-controllers: renesas,dbsc: Convert to json-schema Convert the Renesas DDR Bus Controller Device Tree binding documentation to json-schema. Drop referrals to driver behavior. Make power-domains required, as it is present for all current users. Update the example to match reality. Signed-off-by: Geert Uytterhoeven Signed-off-by: Rob Herring --- .../bindings/memory-controllers/renesas,dbsc.txt | 44 ----------------- .../bindings/memory-controllers/renesas,dbsc.yaml | 56 ++++++++++++++++++++++ 2 files changed, 56 insertions(+), 44 deletions(-) delete mode 100644 Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.txt create mode 100644 Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.yaml diff --git a/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.txt b/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.txt deleted file mode 100644 index 9f78e6c..0000000 --- a/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.txt +++ /dev/null @@ -1,44 +0,0 @@ -DT bindings for Renesas R-Mobile and SH-Mobile memory controllers -================================================================= - -Renesas R-Mobile and SH-Mobile SoCs contain one or more memory controllers. -These memory controllers differ from one SoC variant to another, and are called -by different names ("DDR Bus Controller (DBSC)", "DDR3 Bus State Controller -(DBSC3)", "SDRAM Bus State Controller (SBSC)"). - -Currently memory controller device nodes are used only to reference PM -domains, and prevent these PM domains from being powered down, which would -crash the system. - -As there exist no actual drivers for these controllers yet, these bindings -should be considered EXPERIMENTAL for now. - -Required properties: - - compatible: Must be one of the following SoC-specific values: - - "renesas,dbsc-r8a73a4" (R-Mobile APE6) - - "renesas,dbsc3-r8a7740" (R-Mobile A1) - - "renesas,sbsc-sh73a0" (SH-Mobile AG5) - - reg: Must contain the base address and length of the memory controller's - registers. - -Optional properties: - - interrupts: Must contain a list of interrupt specifiers for memory - controller interrupts, if available. - - interrupt-names: Must contain a list of interrupt names corresponding to - the interrupts in the interrupts property, if available. - Valid interrupt names are: - - "sec" (secure interrupt) - - "temp" (normal (temperature) interrupt) - - power-domains: Must contain a reference to the PM domain that the memory - controller belongs to, if available. - -Example: - - sbsc1: memory-controller@fe400000 { - compatible = "renesas,sbsc-sh73a0"; - reg = <0xfe400000 0x400>; - interrupts = <0 35 IRQ_TYPE_LEVEL_HIGH>, - <0 36 IRQ_TYPE_LEVEL_HIGH>; - interrupt-names = "sec", "temp"; - power-domains = <&pd_a4bc0>; - }; diff --git a/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.yaml b/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.yaml new file mode 100644 index 0000000..7056ccb --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/renesas,dbsc.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/memory-controllers/renesas,dbsc.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Renesas DDR Bus Controllers + +maintainers: + - Geert Uytterhoeven + +description: | + Renesas SoCs contain one or more memory controllers. These memory + controllers differ from one SoC variant to another, and are called by + different names, e.g. "DDR Bus Controller (DBSC)", "DDR3 Bus State Controller + (DBSC3)", or "SDRAM Bus State Controller (SBSC)"). + +properties: + compatible: + enum: + - renesas,dbsc-r8a73a4 # R-Mobile APE6 + - renesas,dbsc3-r8a7740 # R-Mobile A1 + - renesas,sbsc-sh73a0 # SH-Mobile AG5 + + reg: + maxItems: 1 + + interrupts: + maxItems: 2 + + interrupt-names: + items: + - const: sec # secure interrupt + - const: temp # normal (temperature) interrupt + + power-domains: + maxItems: 1 + +required: + - compatible + - reg + - power-domains + +additionalProperties: false + +examples: + - | + #include + sbsc1: memory-controller@fe400000 { + compatible = "renesas,sbsc-sh73a0"; + reg = <0xfe400000 0x400>; + interrupts = , + ; + interrupt-names = "sec", "temp"; + power-domains = <&pd_a4bc0>; + }; -- 2.7.4