[PATCH 1/2] ARM: dts: imx6q-tbs2910: Pass phy-reset-duration

Fabio Estevam festevam at gmail.com
Thu Jun 25 07:08:14 EDT 2020


According to the AR8035 datasheet:

"When using crystal, the clock is generated internally after power is
stable. For a reliable power on reset, suggest to keep asserting the reset
low long enough (10ms) to ensure the clock is stable and clock-to-reset 1ms
requirement is satisfied."

Pass the 'phy-reset-duration' property to meet such requirement.

Signed-off-by: Fabio Estevam <festevam at gmail.com>
---
 arch/arm/boot/dts/imx6q-tbs2910.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx6q-tbs2910.dts b/arch/arm/boot/dts/imx6q-tbs2910.dts
index bfff87ce2e1f..7b03b2787430 100644
--- a/arch/arm/boot/dts/imx6q-tbs2910.dts
+++ b/arch/arm/boot/dts/imx6q-tbs2910.dts
@@ -100,6 +100,7 @@
 	pinctrl-0 = <&pinctrl_enet>;
 	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
+	phy-reset-duration = <10>;
 	status = "okay";
 };
 
-- 
2.17.1




More information about the linux-arm-kernel mailing list