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Thu, 26 Feb 2026 08:14:04 -0800 (PST) Received: from LAPTOP-872M7T80.localdomain ([122.183.54.8]) by smtp.googlemail.com with ESMTPSA id d9443c01a7336-2adfb6a0432sm44384595ad.52.2026.02.26.08.14.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Feb 2026 08:14:03 -0800 (PST) From: Akhila YS Date: Thu, 26 Feb 2026 16:13:37 +0000 Subject: [PATCH v3 5/5] dt-bindings: arm: atmel,at91rm9200-sdramc: convert to DT schema MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260226-arm-microchip-v3-5-0bda15abd922@gmail.com> References: <20260226-arm-microchip-v3-0-0bda15abd922@gmail.com> In-Reply-To: <20260226-arm-microchip-v3-0-0bda15abd922@gmail.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Nicolas Ferre , Claudiu Beznea , Alexandre Belloni Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Akhila YS X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260226_081405_458054_5F26E4B2 X-CRM114-Status: GOOD ( 14.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert RAMC SDRAM/DDR controller binding to YAML format. Signed-off-by: Akhila YS --- .../bindings/arm/atmel,at91rm9200-sdramc.yaml | 67 ++++++++++++++++++++++ .../devicetree/bindings/arm/atmel-sysregs.txt | 20 ------- 2 files changed, 67 insertions(+), 20 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/atmel,at91rm9200-sdramc.yaml b/Documentation/devicetree/bindings/arm/atmel,at91rm9200-sdramc.yaml new file mode 100644 index 000000000000..1516fc8e09e1 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/atmel,at91rm9200-sdramc.yaml @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/atmel,at91rm9200-sdramc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip (Atmel) SDRAM / DDR Controller (RAMC / DDRAMC / UDDRC) + +maintainers: + - Nicolas Ferre + - Claudiu Beznea + +description: + The SDRAM/DDR Controller (often called RAMC or DDRAMC) in various + Atmel/Microchip ARM9 and Cortex-A5/A7 SoCs manages external + SDRAM / DDR memory. It is typically exposed as a syscon node for + register access from other drivers (e.g. for initialization or mode + configuration). No interrupts or clocks are usually required in the + binding. + +properties: + compatible: + oneOf: + - items: + - const: atmel,at91rm9200-sdramc + - const: syscon + - items: + - const: microchip,sama7d65-uddrc + - const: microchip,sama7g5-uddrc + - items: + enum: + - atmel,at91sam9260-sdramc + - atmel,at91sam9g45-ddramc + - atmel,sama5d3-ddramc + - microchip,sam9x60-ddramc + - microchip,sam9x7-ddramc + - microchip,sama7g5-uddrc + + reg: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 2 + + clock-names: + minItems: 1 + items: + - const: ddrck + - const: mpddr + +required: + - compatible + - reg + +unevaluatedProperties: false + +examples: + - | + #include + ramc@ffffe400 { + compatible = "atmel,at91sam9g45-ddramc"; + reg = <0xffffe400 0x200>; + clocks = <&pmc PMC_TYPE_SYSTEM 2>; + clock-names = "ddrck"; + }; +... diff --git a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt b/Documentation/devicetree/bindings/arm/atmel-sysregs.txt deleted file mode 100644 index 14642384bc87..000000000000 --- a/Documentation/devicetree/bindings/arm/atmel-sysregs.txt +++ /dev/null @@ -1,20 +0,0 @@ -Atmel system registers - -RAMC SDRAM/DDR Controller required properties: -- compatible: Should be "atmel,at91rm9200-sdramc", "syscon" or - "atmel,at91sam9260-sdramc" or - "atmel,at91sam9g45-ddramc" or - "atmel,sama5d3-ddramc" or - "microchip,sam9x60-ddramc" or - "microchip,sama7g5-uddrc" or - "microchip,sama7d65-uddrc", "microchip,sama7g5-uddrc" or - "microchip,sam9x7-ddramc", "atmel,sama5d3-ddramc". -- reg: Should contain registers location and length - -Examples: - - ramc0: ramc@ffffe800 { - compatible = "atmel,at91sam9g45-ddramc"; - reg = <0xffffe800 0x200>; - }; - -- 2.43.0