diff mbox series

arm64: dts: imx8mq-kontron-pitx-imx8m: pass phy reset delays

Message ID 20210322212445.23410-1-heiko.thiery@gmail.com (mailing list archive)
State New, archived
Headers show
Series arm64: dts: imx8mq-kontron-pitx-imx8m: pass phy reset delays | expand

Commit Message

Heiko Thiery March 22, 2021, 9:24 p.m. UTC 
The TI DP83867 PHY datasheet says:
T1: Post RESET stabilization time == 195us
T3: Hardware configuration pins transition to output drivers == 64us
T4: RESET pulse width == 1us

So with a little overhead set 'reset-assert-us' to 10us (T4) and
'reset-deassert-us' to 280us (T1+T3).

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
---
 arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
index 91a9ceb10305..f593e4ff62e1 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
@@ -90,6 +90,8 @@  ethphy0: ethernet-phy@0 {
 			ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>;
 			ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>;
 			reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;
+			reset-assert-us = <10>;
+			reset-deassert-us = <280>;
 		};
 	};
 };