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Mon, 08 Jun 2026 10:54:39 -0700 (PDT) From: Tomer Maimon To: andrew@codeconstruct.com.au, broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: openbmc@lists.ozlabs.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com Subject: [PATCH v2 1/2] arm: dts: nuvoton: npcm7xx: Drop bogus FIU memory reg-names Date: Mon, 8 Jun 2026 20:54:17 +0300 Message-Id: <20260608175418.1936892-2-tmaimon77@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260608175418.1936892-1-tmaimon77@gmail.com> References: <20260608175418.1936892-1-tmaimon77@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The NPCM7xx FIU controller nodes only describe the control register block, but they still advertise a second "memory" entry in reg-names. Drop the bogus name so the DTS matches the resources actually present in each node. Signed-off-by: Tomer Maimon Reviewed-by: Krzysztof Kozlowski --- arch/arm/boot/dts/nuvoton/nuvoton-common-npcm7xx.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/nuvoton/nuvoton-common-npcm7xx.dtsi b/arch/a= rm/boot/dts/nuvoton/nuvoton-common-npcm7xx.dtsi index ab3c3c5713ae..a16450abea0e 100644 --- a/arch/arm/boot/dts/nuvoton/nuvoton-common-npcm7xx.dtsi +++ b/arch/arm/boot/dts/nuvoton/nuvoton-common-npcm7xx.dtsi @@ -191,7 +191,7 @@ fiu0: spi@fb000000 { #address-cells =3D <1>; #size-cells =3D <0>; reg =3D <0xfb000000 0x1000>; - reg-names =3D "control", "memory"; + reg-names =3D "control"; clocks =3D <&clk NPCM7XX_CLK_SPI0>; clock-names =3D "clk_spi0"; status =3D "disabled"; @@ -202,7 +202,7 @@ fiu3: spi@c0000000 { #address-cells =3D <1>; #size-cells =3D <0>; reg =3D <0xc0000000 0x1000>; - reg-names =3D "control", "memory"; + reg-names =3D "control"; clocks =3D <&clk NPCM7XX_CLK_SPI3>; clock-names =3D "clk_spi3"; pinctrl-names =3D "default"; @@ -215,7 +215,7 @@ fiux: spi@fb001000 { #address-cells =3D <1>; #size-cells =3D <0>; reg =3D <0xfb001000 0x1000>; - reg-names =3D "control", "memory"; + reg-names =3D "control"; clocks =3D <&clk NPCM7XX_CLK_SPIX>; clock-names =3D "clk_spix"; status =3D "disabled"; --=20 2.34.1 From nobody Thu Jun 25 00:31:10 2026 Received: from mail-wr1-f47.google.com (mail-wr1-f47.google.com [209.85.221.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CAC9B3BC68A for ; Mon, 8 Jun 2026 17:54:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.47 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780941285; cv=none; b=f5JR0bC7D/Ex0y3tnvLp3H2asvcmDPq3mvfjGRDXsxOeRLp7sHq2PgFobCd34BiTur9O8C1DyZkgSp+L2E8wdofyDkz5uaNXOPKefUYXfRfPf4Rzi/ZbbuCceSjVM5b2DJ7kxRYREuD0TU1qkLRduf/kbYYpwhuMYaAPBdhePwQ= ARC-Message-Signature: i=1; a=rsa-sha256; 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Mon, 08 Jun 2026 10:54:42 -0700 (PDT) Received: from taln60.nuvoton.co.il ([212.199.177.18]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4601f3529e0sm56269275f8f.28.2026.06.08.10.54.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Jun 2026 10:54:41 -0700 (PDT) From: Tomer Maimon To: andrew@codeconstruct.com.au, broonie@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: openbmc@lists.ozlabs.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, avifishman70@gmail.com, tmaimon77@gmail.com, tali.perry1@gmail.com, venture@google.com, yuenn@google.com, benjaminfair@google.com Subject: [PATCH v2 2/2] spi: dt-bindings: nuvoton,npcm-fiu: Convert to DT schema Date: Mon, 8 Jun 2026 20:54:18 +0300 Message-Id: <20260608175418.1936892-3-tmaimon77@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260608175418.1936892-1-tmaimon77@gmail.com> References: <20260608175418.1936892-1-tmaimon77@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Convert the Nuvoton NPCM FIU binding to DT schema format. Signed-off-by: Tomer Maimon --- .../bindings/spi/nuvoton,npcm-fiu.txt | 58 ------------ .../bindings/spi/nuvoton,npcm-fiu.yaml | 91 +++++++++++++++++++ 2 files changed, 91 insertions(+), 58 deletions(-) delete mode 100644 Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.= txt create mode 100644 Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.= yaml diff --git a/Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.txt b/D= ocumentation/devicetree/bindings/spi/nuvoton,npcm-fiu.txt deleted file mode 100644 index fb38e96d395f..000000000000 --- a/Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.txt +++ /dev/null @@ -1,58 +0,0 @@ -* Nuvoton FLASH Interface Unit (FIU) SPI Controller - -NPCM FIU supports single, dual and quad communication interface. - -The NPCM7XX supports three FIU modules, -FIU0 and FIUx supports two chip selects, -FIU3 support four chip select. - -The NPCM8XX supports four FIU modules, -FIU0 and FIUx supports two chip selects, -FIU1 and FIU3 supports four chip selects. - -Required properties: - - compatible : "nuvoton,npcm750-fiu" for Poleg NPCM7XX BMC - "nuvoton,npcm845-fiu" for Arbel NPCM8XX BMC - - #address-cells : should be 1. - - #size-cells : should be 0. - - reg : the first contains the register location and length, - the second contains the memory mapping address and length - - reg-names: Should contain the reg names "control" and "memory" - - clocks : phandle of FIU reference clock. - -Required properties in case the pins can be muxed: - - pinctrl-names : a pinctrl state named "default" must be defined. - - pinctrl-0 : phandle referencing pin configuration of the device. - -Optional property: - - nuvoton,spix-mode: enable spix-mode for an expansion bus to an ASIC or= CPLD. - -Aliases: -- All the FIU controller nodes should be represented in the aliases node u= sing - the following format 'fiu{n}' where n is a unique number for the alias. - In the NPCM7XX BMC: - fiu0 represent fiu 0 controller - fiu1 represent fiu 3 controller - fiu2 represent fiu x controller - - In the NPCM8XX BMC: - fiu0 represent fiu 0 controller - fiu1 represent fiu 1 controller - fiu2 represent fiu 3 controller - fiu3 represent fiu x controller - -Example: -fiu3: spi@c00000000 { - compatible =3D "nuvoton,npcm750-fiu"; - #address-cells =3D <1>; - #size-cells =3D <0>; - reg =3D <0xfb000000 0x1000>, <0x80000000 0x10000000>; - reg-names =3D "control", "memory"; - clocks =3D <&clk NPCM7XX_CLK_AHB>; - pinctrl-names =3D "default"; - pinctrl-0 =3D <&spi3_pins>; - flash@0 { - ... - }; -}; - diff --git a/Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.yaml b/= Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.yaml new file mode 100644 index 000000000000..0f95def01910 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/nuvoton,npcm-fiu.yaml @@ -0,0 +1,91 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/spi/nuvoton,npcm-fiu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Nuvoton NPCM Flash Interface Unit (FIU) SPI Controller + +maintainers: + - Tomer Maimon + +allOf: + - $ref: spi-controller.yaml# + +description: | + NPCM FIU supports single, dual and quad communication interface. + + The NPCM7XX supports three FIU modules: + FIU0 and FIUx support two chip selects + FIU3 supports four chip selects. + + The NPCM8XX supports four FIU modules: + FIU0 and FIUx support two chip selects + FIU1 and FIU3 support four chip selects. + + Alias convention: + The '/aliases' node should define: + For NPCM7xx: fiu0=3D&fiu0; fiu1=3D&fiu3; fiu2=3D&fiux; + For NPCM8xx: fiu0=3D&fiu0; fiu1=3D&fiu3; fiu2=3D&fiux; fiu3=3D&fiu1; + +properties: + compatible: + enum: + - nuvoton,npcm750-fiu # Poleg NPCM7XX + - nuvoton,npcm845-fiu # Arbel NPCM8XX + + reg: + minItems: 1 + items: + - description: FIU registers + - description: Memory-mapped flash contents (optional) + + reg-names: + minItems: 1 + items: + - const: control + - const: memory + + clocks: + maxItems: 1 + + clock-names: + items: + - enum: + - clk_spi0 + - clk_spi1 + - clk_spi3 + - clk_spix + + nuvoton,spix-mode: + type: boolean + description: Enable SPIX mode for an expansion bus to an ASIC or CPLD. + +required: + - compatible + - reg + - reg-names + - clocks + +unevaluatedProperties: false + +examples: + - | + #include + spi@fb000000 { + compatible =3D "nuvoton,npcm750-fiu"; + #address-cells =3D <1>; + #size-cells =3D <0>; + reg =3D <0xfb000000 0x1000>, <0x80000000 0x10000000>; + reg-names =3D "control", "memory"; + clocks =3D <&clk NPCM7XX_CLK_AHB>; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&spi3_pins>; + + flash@0 { + compatible =3D "jedec,spi-nor"; + reg =3D <0>; + #address-cells =3D <1>; + #size-cells =3D <1>; + }; + }; --=20 2.34.1