diff mbox series

[v1,1/2] doc: dt-binding: mxs-usb-phy: fix fsl,tx-cal-45-dn-ohms max and min value

Message ID 20220829153124.2791210-1-Frank.Li@nxp.com (mailing list archive)
State Accepted
Commit 37bcd16d51c8d738469efb325211a43f1eeb8baa
Headers show
Series [v1,1/2] doc: dt-binding: mxs-usb-phy: fix fsl,tx-cal-45-dn-ohms max and min value | expand

Commit Message

Frank Li Aug. 29, 2022, 3:31 p.m. UTC
According to spec:
	0000 +19.95%
	....
	1111 -21.68%

45 * (1 + 19.95%) = 53.9775
45 * (1 - 21.68%) = 35.244

Chanege fsl,tx-cal-45-dn-ohms and fsl,tx-cal-45-dp-ohms range to [35-54]
from [30-55]

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
 Documentation/devicetree/bindings/phy/mxs-usb-phy.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Krzysztof Kozlowski Aug. 30, 2022, 9:44 a.m. UTC | #1
On 29/08/2022 18:31, Frank Li wrote:
> According to spec:
> 	0000 +19.95%
> 	....
> 	1111 -21.68%
> 
> 45 * (1 + 19.95%) = 53.9775
> 45 * (1 - 21.68%) = 35.244
> 
> Chanege fsl,tx-cal-45-dn-ohms and fsl,tx-cal-45-dp-ohms range to [35-54]
> from [30-55]
> 
> Signed-off-by: Frank Li <Frank.Li@nxp.com>


Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/mxs-usb-phy.txt b/Documentation/devicetree/bindings/phy/mxs-usb-phy.txt
index c9f5c0caf8a9c..111d446b5f986 100644
--- a/Documentation/devicetree/bindings/phy/mxs-usb-phy.txt
+++ b/Documentation/devicetree/bindings/phy/mxs-usb-phy.txt
@@ -14,10 +14,10 @@  Required properties:
 - fsl,anatop: phandle for anatop register, it is only for imx6 SoC series
 
 Optional properties:
-- fsl,tx-cal-45-dn-ohms: Integer [30-55]. Resistance (in ohms) of switchable
+- fsl,tx-cal-45-dn-ohms: Integer [35-54]. Resistance (in ohms) of switchable
   high-speed trimming resistor connected in parallel with the 45 ohm resistor
   that terminates the DN output signal. Default: 45
-- fsl,tx-cal-45-dp-ohms: Integer [30-55]. Resistance (in ohms) of switchable
+- fsl,tx-cal-45-dp-ohms: Integer [35-54]. Resistance (in ohms) of switchable
   high-speed trimming resistor connected in parallel with the 45 ohm resistor
   that terminates the DP output signal. Default: 45
 - fsl,tx-d-cal: Integer [79-119]. Current trimming value (as a percentage) of