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Mon, 10 Jan 2022 19:37:05 +0000 From: Robert Hancock To: linux-usb@vger.kernel.org Cc: Thinh.Nguyen@synopsys.com, robh+dt@kernel.org, devicetree@vger.kernel.org, michal.simek@xilinx.com, balbi@kernel.org, gregkh@linuxfoundation.org, mounika.grace.akula@xilinx.com, manish.narani@xilinx.com, Robert Hancock Subject: [PATCH v2 3/5] dt-bindings: usb: dwc3: add reference clock period fractional adjustment Date: Mon, 10 Jan 2022 13:36:39 -0600 Message-Id: <20220110193641.1368350-4-robert.hancock@calian.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220110193641.1368350-1-robert.hancock@calian.com> References: <20220110193641.1368350-1-robert.hancock@calian.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MWHPR12CA0025.namprd12.prod.outlook.com (2603:10b6:301:2::11) To YT2PR01MB6270.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:4d::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5f15b8bb-f4b5-4413-5f30-08d9d47094e4 X-MS-TrafficTypeDiagnostic: YTOPR0101MB2236:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6430; 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Signed-off-by: Robert Hancock --- 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 25ac2c93dc6c..88d8d831e04a 100644 --- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml @@ -260,6 +260,18 @@ properties: minimum: 1 maximum: 0x3ff + snps,ref-clock-fladj: + description: + Value for GFLADJ_REFCLK_FLADJ field of GFLADJ register for the + fractional portion of the reference clock period in nanoseconds, + when the hardware set default does not match the actual + clock. Calculated via + ((125000/ref_clk_period_integer)-(125000/ref_clk_period)) * ref_clk_period + where ref_clk_period_integer is the period specified in GUCTL_REFCLKPER and + ref_clk_period is the period including fractional value. + minimum: 0 + maximum: 124999 + snps,rx-thr-num-pkt-prd: description: Periodic ESS RX packet threshold count (host mode only). Set this and -- 2.31.1