From patchwork Mon Oct 28 21:45:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Angelo Dureghello X-Patchwork-Id: 13854201 Received: from mail.kernel-space.org (mail.kernel-space.org [195.201.34.187]) (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 3A78520127B; Mon, 28 Oct 2024 21:53:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.201.34.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730152421; cv=none; b=IkfMzPZEezkh30/6L9i3GPrzo7N2o2hYptWiKf0Bz0i6XqLHGFRcwRoRJej1Ir5eYRhVb9UJ17gXkhdHdFgwAeirhNRUZgCjO1eLPJ0VF2pDx7Seoo30/FNkMugvDFCVa6kXF0rrJfCiYsn1rc9PF4UMTbWYKt4xqKzVkDVifVU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730152421; c=relaxed/simple; bh=ojKSNyD2EVe/IEDwrN7wNa8IQCtyeU4dv9gi0XQu3WA=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Kka2Cx8l1i+XLNEYvHdvAqFKTzz/MRqMDp4xvK/Ip49LHGBJrmU43W3F7PIpi63VTRfA1O8bapstSLzEXyZRcjZr6dPPc22eF4H+cmZO/fdnsu2RHY3eL0bxwOQUHpxHJD4GxIRPDWj3h36CnPt6vwDk3kPIkUb9EkGIi6un28k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=kernel-space.org; spf=pass smtp.mailfrom=kernel-space.org; dkim=pass (1024-bit key) header.d=kernel-space.org header.i=@kernel-space.org header.b=NWKDl0BQ; dkim=pass (1024-bit key) header.d=kernel-space.org header.i=@kernel-space.org header.b=hG5M6j3Y; arc=none smtp.client-ip=195.201.34.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=kernel-space.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel-space.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=kernel-space.org header.i=@kernel-space.org header.b="NWKDl0BQ"; dkim=pass (1024-bit key) header.d=kernel-space.org header.i=@kernel-space.org header.b="hG5M6j3Y" Received: from kernel-space.org (localhost [127.0.0.1]) by kernel-space.org (OpenSMTPD) with ESMTP id 02eb03c8; Mon, 28 Oct 2024 21:37:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=kernel-space.org; h=from :date:subject:mime-version:content-type :content-transfer-encoding:message-id:references:in-reply-to:to :cc; s=s1; bh=rGdPirXcfMFi3svLNfW1afxz7ZA=; b=NWKDl0BQr7clLQriRb XpMVO6VIPjBY/FjZfDHgSq/vIyr79isjtBjSoxkjoHM6pZQvOSxMZvAFMmzQiQxD YQ8F49gx0ZMPjHL1TB+bADcExvpIyUfdvJecyLxuxA/ATB6IkN0ArEE+0qt40M/0 Ny173Zml1y8JDn6IdbRYVUDV4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=kernel-space.org; h=from :date:subject:mime-version:content-type :content-transfer-encoding:message-id:references:in-reply-to:to :cc; q=dns; s=s1; b=e77Lds/CGnP8Ku1a/JXZPGJ6C/+9AfMbiFbzOu7zQnw7 UWa9C2k6pZpVs5aDdQxms/pK/LrdgADrq7f7ixtGUwYAjCLaRVkkhgLisf/JEJ3g qr3sUKuycanbqtFfG3P1sgBv/L0IHn8KnD316gDVbtm8PS0mpbJt5ABfwAHev4o= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-space.org; s=s1; t=1730151473; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6D/EkgzRCNFr6KoXbaTUBYL2k31iFO9iPQDbeDyGB5w=; b=hG5M6j3YpReZdytRYN8Zgff+nXp8cSef+nrsRVfgxlQhDX49a1llr0X71QXmOuuGPWtMbM L2fijnkkvQHmd2V0IYrFDk79toa9LK58P7D3jX0spnodKdOrzXK1Z5d713ypKpOacMctJE szFDWr507cjYN7HLFjFT6Wzr58yAFEM= Received: from [127.0.1.1] (host-95-245-34-85.retail.telecomitalia.it [95.245.34.85]) by kernel-space.org (OpenSMTPD) with ESMTPSA id 2eb49e81 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Mon, 28 Oct 2024 21:37:53 +0000 (UTC) From: Angelo Dureghello Date: Mon, 28 Oct 2024 22:45:29 +0100 Subject: [PATCH v9 2/8] dt-bindings: iio: dac: adi-axi-dac: add ad3552r axi variant Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-2-f6960b4f9719@kernel-space.org> References: <20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-0-f6960b4f9719@kernel-space.org> In-Reply-To: <20241028-wip-bl-ad3552r-axi-v0-iio-testing-v9-0-f6960b4f9719@kernel-space.org> To: Lars-Peter Clausen , Michael Hennerich , =?utf-8?q?Nuno_S=C3=A1?= , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Olivier Moysan Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dlechner@baylibre.com, Mark Brown , Angelo Dureghello , Angelo Dureghello X-Mailer: b4 0.14.1 From: Angelo Dureghello Add a new compatible and related bindigns for the fpga-based "ad3552r" AXI IP core, a variant of the generic AXI DAC IP. The AXI "ad3552r" IP is a very similar HDL (fpga) variant of the generic AXI "DAC" IP, intended to control ad3552r and similar chips, mainly to reach high speed transfer rates using a QSPI DDR (dobule-data-rate) interface. The ad3552r device is defined as a child of the AXI DAC, that in this case is acting as an SPI controller. Note, #io-backend is present because it is possible (in theory anyway) to use a separate controller for the control path than that used for the datapath. Signed-off-by: Angelo Dureghello Reviewed-by: Rob Herring (Arm) --- .../devicetree/bindings/iio/dac/adi,axi-dac.yaml | 69 +++++++++++++++++++++- 1 file changed, 66 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml index a55e9bfc66d7..1adba9aceeb1 100644 --- a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml +++ b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml @@ -19,11 +19,13 @@ description: | memory via DMA into the DAC. https://wiki.analog.com/resources/fpga/docs/axi_dac_ip + https://analogdevicesinc.github.io/hdl/library/axi_ad3552r/index.html properties: compatible: enum: - adi,axi-dac-9.1.b + - adi,axi-ad3552r reg: maxItems: 1 @@ -36,7 +38,14 @@ properties: - const: tx clocks: - maxItems: 1 + minItems: 1 + maxItems: 2 + + clock-names: + items: + - const: s_axi_aclk + - const: dac_clk + minItems: 1 '#io-backend-cells': const: 0 @@ -47,7 +56,29 @@ required: - reg - clocks -additionalProperties: false +allOf: + - if: + properties: + compatible: + contains: + const: adi,axi-ad3552r + then: + $ref: /schemas/spi/spi-controller.yaml# + properties: + clocks: + minItems: 2 + clock-names: + minItems: 2 + required: + - clock-names + else: + properties: + clocks: + maxItems: 1 + clock-names: + maxItems: 1 + +unevaluatedProperties: false examples: - | @@ -57,6 +88,38 @@ examples: dmas = <&tx_dma 0>; dma-names = "tx"; #io-backend-cells = <0>; - clocks = <&axi_clk>; + clocks = <&clkc 15>; + clock-names = "s_axi_aclk"; + }; + + - | + #include + axi_dac: spi@44a70000 { + compatible = "adi,axi-ad3552r"; + reg = <0x44a70000 0x1000>; + dmas = <&dac_tx_dma 0>; + dma-names = "tx"; + #io-backend-cells = <0>; + clocks = <&clkc 15>, <&ref_clk>; + clock-names = "s_axi_aclk", "dac_clk"; + + #address-cells = <1>; + #size-cells = <0>; + + dac@0 { + compatible = "adi,ad3552r"; + reg = <0>; + reset-gpios = <&gpio0 92 GPIO_ACTIVE_HIGH>; + io-backends = <&axi_dac>; + spi-max-frequency = <20000000>; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + adi,output-range-microvolt = <(-10000000) (10000000)>; + }; + }; }; ...