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[31.19.34.248]) by smtp.gmail.com with ESMTPSA id x14sm20264875wrw.13.2021.03.22.14.25.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Mar 2021 14:25:20 -0700 (PDT) From: Heiko Thiery To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Rob Herring , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , heiko.thiery@gmail.com, michael@walle.cc Subject: [PATCH] arm64: dts: imx8mq-kontron-pitx-imx8m: pass phy reset delays Date: Mon, 22 Mar 2021 22:24:46 +0100 Message-Id: <20210322212445.23410-1-heiko.thiery@gmail.com> X-Mailer: git-send-email 2.30.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210322_212522_935508_57A10ED9 X-CRM114-Status: GOOD ( 10.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts | 2 ++ 1 file changed, 2 insertions(+) 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 = ; ti,fifo-depth = ; reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>; + reset-assert-us = <10>; + reset-deassert-us = <280>; }; }; };