From: Robert Hancock <robert.hancock@calian.com>
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 <robert.hancock@calian.com>
Subject: [PATCH v4 3/5] dt-bindings: usb: dwc3: add reference clock period fractional adjustment
Date: Thu, 13 Jan 2022 22:42:28 -0600 [thread overview]
Message-ID: <20220114044230.2677283-4-robert.hancock@calian.com> (raw)
In-Reply-To: <20220114044230.2677283-1-robert.hancock@calian.com>
Document the new snps,ref-clock-fladj property which can be used to set
the fractional portion of the reference clock period.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
---
.../devicetree/bindings/usb/snps,dwc3.yaml | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index d29ffcd27472..5872a4470b16 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -266,6 +266,19 @@ 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.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ 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
next prev parent reply other threads:[~2022-01-14 4:43 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 4:42 [PATCH v4 0/5] Xilinx ZynqMP USB fixes Robert Hancock
2022-01-14 4:42 ` [PATCH v4 1/5] usb: dwc3: xilinx: Fix PIPE clock selection for USB2.0 mode Robert Hancock
2022-01-14 4:42 ` [PATCH v4 2/5] usb: dwc3: xilinx: Fix error handling when getting USB3 PHY Robert Hancock
2022-01-14 4:42 ` Robert Hancock [this message]
2022-01-14 4:42 ` [PATCH v4 4/5] usb: dwc3: add reference clock FLADJ configuration Robert Hancock
2022-01-14 18:05 ` Sean Anderson
2022-01-14 19:22 ` Robert Hancock
2022-01-14 19:56 ` Sean Anderson
2022-01-14 4:42 ` [PATCH v4 5/5] arm64: dts: zynqmp: Add DWC3 USB reference clock period configuration Robert Hancock
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