From nobody Mon Feb 9 05:41:47 2026 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BCA31F3BA4; Fri, 7 Nov 2025 12:17:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762517845; cv=none; b=VNjjLirvRi89Y95oC7R/4f0KejRLk2wtplt537G7TDQdPY6mKOZ1eno5ennHXR+edLRYQ3rPRCerBdDmYoSY96wngoWPp4iHGgP+sJAP6o9xP8sBGzAF4x5ZRrIhvrA6MCFy6XLfogz22g5UEesoFiHM8Zr5N12ML/Jzm56/5Kg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762517845; c=relaxed/simple; bh=gUnRf6n8ndiHI4YW1DJPBaLZYDQ9YnYfxMEEpRNdoGY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=hL+XB1eO48VK0m/a6cHzVwC+HP8593O5ZzDLNFrZNXoSOJnN6LbFAhX9uzFq58ukVEP+Urtea9e8UGwb/GoJARofT8k3iXLvELvYfU0AkVXzqe154LHHkZfdk4vr1XNhbRW5bD6dhliA9Sna2BxcRUIkEfxrPEbs7QoRvVK1WuY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=mWRHA9UY; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="mWRHA9UY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1762517844; x=1794053844; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=gUnRf6n8ndiHI4YW1DJPBaLZYDQ9YnYfxMEEpRNdoGY=; b=mWRHA9UY11baox0W8gTnSUY3YjTnkVbECiQJ4GwWoyul+mTz0pskY2G3 +mZ47DnPZu3FodjhtI53Nc28hEOKL5cnW2HUpZDv9S5TrowHFM7uG+WYo JRGK9kMUBElr8FmISVzb+/uza6BT8XIv5UNE70ovEC1AjRc+tYW1Ix+Rj F7dATtD3pmQB45zfPuS0uV7b/UOXK+423idPPmCigSn+HuKYxdvypN2FP 1qpDPWXxlFO1Sw86A4sqW/IsWvfdbt3s44HGih6wEdzQWnIl9v9lJ26k4 HIiejhz41zt2Rdn8+VihrgBIWv3VjcHNKbq5D+AIRKSTGt8gmtfB1B+X7 g==; X-CSE-ConnectionGUID: sUAnbxRLSU+qM77z5K7SQw== X-CSE-MsgGUID: mQ2FtkYrQPSnKguOdAN9ZQ== X-IronPort-AV: E=Sophos;i="6.19,286,1754982000"; d="scan'208";a="55218277" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 07 Nov 2025 05:17:23 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Fri, 7 Nov 2025 05:16:42 -0700 Received: from Lily.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Fri, 7 Nov 2025 05:16:40 -0700 From: Prajna Rajendra Kumar To: Mark Brown CC: Rob Herring , Krzysztof Kozlowski , , , , , Conor Dooley , Daire McNamara , Valentina Fernandez Alanis , "Cyril Jean" , Prajna Rajendra Kumar Subject: [PATCH v3 2/3] spi: dt-binding: document Microchip CoreSPI Date: Fri, 7 Nov 2025 12:21:03 +0000 Message-ID: <20251107122104.1389301-3-prajna.rajendrakumar@microchip.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20251107122104.1389301-1-prajna.rajendrakumar@microchip.com> References: <20251107122104.1389301-1-prajna.rajendrakumar@microchip.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" Add device tree bindings for Microchip's CoreSPI controller. CoreSPI is a "soft" IP core intended for FPGA implementations. Its configurations are set in Libero. These properties represent non-discoverable configurations determined by Verilog parameters to the IP. Signed-off-by: Prajna Rajendra Kumar Reviewed-by: Conor Dooley --- .../bindings/spi/microchip,mpfs-spi.yaml | 70 ++++++++++++++++++- 1 file changed, 68 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml = b/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml index 62a568bdbfa0..636338d24bdf 100644 --- a/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml +++ b/Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml @@ -21,11 +21,13 @@ properties: - microchip,mpfs-qspi - microchip,pic64gx-qspi - const: microchip,coreqspi-rtl-v2 - - const: microchip,coreqspi-rtl-v2 # FPGA QSPI + - enum: + - microchip,coreqspi-rtl-v2 # FPGA QSPI + - microchip,corespi-rtl-v5 # FPGA CoreSPI + - microchip,mpfs-spi - items: - const: microchip,pic64gx-spi - const: microchip,mpfs-spi - - const: microchip,mpfs-spi =20 reg: maxItems: 1 @@ -39,6 +41,45 @@ properties: clocks: maxItems: 1 =20 + microchip,apb-datawidth: + description: APB bus data width in bits. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [8, 16, 32] + default: 8 + + microchip,frame-size: + description: | + Number of bits per SPI frame, as configured in Libero. + In Motorola and TI modes, this corresponds directly + to the requested frame size. For NSC mode this is set + to 9 + the required data frame size. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 4 + maximum: 32 + default: 8 + + microchip,protocol-configuration: + description: CoreSPI protocol selection. Determines operating mode + $ref: /schemas/types.yaml#/definitions/string + enum: + - motorola + - ti + - nsc + default: motorola + + microchip,motorola-mode: + description: Motorola SPI mode selection + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1, 2, 3] + default: 3 + + microchip,ssel-active: + description: | + Keep SSEL asserted between frames when using the Motorola protocol. + When present, the controller keeps SSEL active across contiguous + transfers and deasserts only when the overall transfer completes. + type: boolean + required: - compatible - reg @@ -71,6 +112,31 @@ allOf: num-cs: maximum: 1 =20 + - if: + properties: + compatible: + contains: + const: microchip,corespi-rtl-v5 + then: + properties: + num-cs: + minimum: 1 + maximum: 8 + default: 8 + + fifo-depth: + minimum: 1 + maximum: 32 + default: 4 + + else: + properties: + microchip,apb-datawidth: false + microchip,frame-size: false + microchip,protocol-configuration: false + microchip,motorola-mode: false + microchip,ssel-active: false + unevaluatedProperties: false =20 examples: --=20 2.25.1