From patchwork Mon Oct 7 13:55:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joy Chakraborty X-Patchwork-Id: 834917 Received: from mail-yw1-f201.google.com (mail-yw1-f201.google.com [209.85.128.201]) (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 30C141D5CE0 for ; Mon, 7 Oct 2024 13:55:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728309327; cv=none; b=HKVHkGW7cxgGFt8mzmL6HkpTFnOsnHArq9C/nPZb/O63JiGFUDmiIYwqPUcU8eyZq4JGjj3MSn8NL6Y0kcIZfGPo2gYgC9i5ZKiPZMau1v2HnXsBbzkTGbwvvz7vybUhqd+cNZ4dwkVV5p6Zuk24D+k9Erb71NziCDOs1GX5CjM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728309327; c=relaxed/simple; bh=WkIFA3Bbn+M2B5VzgzqBsaRxhzbrBeYNIHEndslM8DI=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=dIo6Pd/jYMbR+FC9Shpv/DldYKEqKTRXTmmVR9HSzE1gTvyF00/UDiOlnct4RnWOO4byQCVvoBzKF+VGchRJev8LKFmWXEozrDaKEeTfZUXe31948xT/PHUt9SSYPY7zlao6w5M7DWvEzEvPxEiBjSOE7tcv0jvJO+Lj9dAj/2Y= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--joychakr.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=CwFtpwfR; arc=none smtp.client-ip=209.85.128.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--joychakr.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="CwFtpwfR" Received: by mail-yw1-f201.google.com with SMTP id 00721157ae682-6e230808455so53701147b3.0 for ; Mon, 07 Oct 2024 06:55:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1728309324; x=1728914124; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=CblMzpCPNydZZpvacmjghKpdVLiy01vOQxnw0IUvqWY=; b=CwFtpwfRHMfxXmO55c0Lwx/LrOjH1eknvkF7swKeU1TQfAyX0wWjit2wBTctg7Wd/w /qr+uqc/fYpmY2N9k90Ot6CnQaPcmAXQJPktWTiVT34PSU3QI4uZWcMrKnZnS2zTk928 afmkzmQkDjLBHdd+ywWtMt3gX3RwgeVJcGAUA4y0aV8MNjNA0Ifq7GG8jk91dJ5KUIS/ /hRT1pBQ+nuL5t128PBIcsgGoOnyWa98VQRvWqp4lwcCJ8fOkBU9EUmzARp+IaAS5qnS UEhcQpruVLvZGnMWyxZtAY8aCyxR44LOTimFhttRR9cz4HCBkiSCIr0bwwihbDdhysMc Q/bA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728309324; x=1728914124; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=CblMzpCPNydZZpvacmjghKpdVLiy01vOQxnw0IUvqWY=; b=dG10rAjKlexyvZtrFwmMkfZWVDJzEjJwaY3aVNzuwE4502o7D19swsc0RiaInfxnMk wFbL21RGjtsX0I7tOW0duaDbKBrPv7eUCVQMJJaDiWCo6YVFD+R9hsDK2hsi7XDj/TEX V3xE86UlUvMBGW8Dy2VYi0LygPn3jI7xtXUzw+4gf9WtGrQQUpNd1lbzPwo9W8vVR1dK mjpdHkFYx+tWDGb6KUclIRjaMe8B1aJCbwESlwYzb3uW3dYpnXOaI8JFatwzhp5Llzd2 zscHKRYB/pXzgM2hJ6CAfOB3WU7xacchhU36q0AYryyPaTu2FpKAi38jk6dsRf9Hlnqf 4rVg== X-Gm-Message-State: AOJu0YwgIeG6Jkev+lwTX4KMHS2goczBltWqvwqqVRAch1Sucsnoe+Gq aDqDNmotbV/vKTVjLxB3sU/a2BybTQLYFIHRuxC2J90mKFClKGpeSGwhp/NfRIKL4wR/UH+xr4T r63OJRkAtjQ== X-Google-Smtp-Source: AGHT+IHEWUgCEIy7iPCOVn7Lb+x/YbYzsOzZFkYER6vlS8wHJBCQCEMmUmC8PeUdmvbDxuhxB58u1a4APwmNFA== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a05:690c:d1d:b0:6e2:2c72:3abb with SMTP id 00721157ae682-6e2c72bbd5emr3753187b3.7.1728309324364; Mon, 07 Oct 2024 06:55:24 -0700 (PDT) Date: Mon, 7 Oct 2024 13:55:06 +0000 In-Reply-To: <20241007135508.3143756-1-joychakr@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241007135508.3143756-1-joychakr@google.com> X-Mailer: git-send-email 2.47.0.rc0.187.ge670bccf7e-goog Message-ID: <20241007135508.3143756-3-joychakr@google.com> Subject: [PATCH 1/2] dt-bindings: usb: dwc3: Add binding for USB Gen2 De-emphasis From: Joy Chakraborty To: Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thinh Nguyen , Felipe Balbi Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Joy Chakraborty PIPE4 spec defines an 18bit de-emphasis setting to be passed from controller to the PHY. TxDeemph[17:0] is split as [5:0] C-1, [11:6] C0, [17:12] C+1 for 3 tap filter used for USB Gen2(10GT/s). Signed-off-by: Joy Chakraborty --- Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml index 1cd0ca90127d..a1f1bbcf1467 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -190,6 +190,18 @@ properties: - 1 # -3.5dB de-emphasis - 2 # No de-emphasis + snps,tx_gen2_de_emphasis_quirk: + description: When set core will set Tx de-emphasis for USB Gen2 + type: boolean + + snps,tx_gen2_de_emphasis: + description: + The 18bit value of Tx deemphasis defined in PIPE4 spec driven to PHY + for normal operation. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 0x3ffff + snps,dis_u3_susphy_quirk: description: When set core will disable USB3 suspend phy type: boolean