linux-kernel - [PATCH 4/5] ARM: dts: stm32: adjust slew rate for Ethernet

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Message-ID: <20190920053817.13754-5-christophe.roullier@st.com>
Date:   Fri, 20 Sep 2019 07:38:16 +0200
From:   Christophe Roullier <christophe.roullier@...com>
To:     <robh@...nel.org>, <davem@...emloft.net>, <joabreu@...opsys.com>,
        <mark.rutland@....com>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <peppe.cavallaro@...com>
CC:     <linux-stm32@...md-mailman.stormreply.com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <christophe.roullier@...com>, <andrew@...n.ch>
Subject: [PATCH  4/5] ARM: dts: stm32: adjust slew rate for Ethernet

ETH_MDIO slew-rate should be set to "0" instead of "2"

Signed-off-by: Christophe Roullier <christophe.roullier@...com>
---
 arch/arm/boot/dts/stm32mp157-pinctrl.dtsi | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
index df6470133574..7667fe758957 100644
--- a/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stm32mp157-pinctrl.dtsi
@@ -239,13 +239,18 @@
 						 <STM32_PINMUX('C', 2, AF11)>, /* ETH_RGMII_TXD2 */
 						 <STM32_PINMUX('E', 2, AF11)>, /* ETH_RGMII_TXD3 */
 						 <STM32_PINMUX('B', 11, AF11)>, /* ETH_RGMII_TX_CTL */
-						 <STM32_PINMUX('A', 2, AF11)>, /* ETH_MDIO */
 						 <STM32_PINMUX('C', 1, AF11)>; /* ETH_MDC */
 					bias-disable;
 					drive-push-pull;
-					slew-rate = <3>;
+					slew-rate = <2>;
 				};
 				pins2 {
+					pinmux = <STM32_PINMUX('A', 2, AF11)>; /* ETH_MDIO */
+					bias-disable;
+					drive-push-pull;
+					slew-rate = <0>;
+				};
+				pins3 {
 					pinmux = <STM32_PINMUX('C', 4, AF11)>, /* ETH_RGMII_RXD0 */
 						 <STM32_PINMUX('C', 5, AF11)>, /* ETH_RGMII_RXD1 */
 						 <STM32_PINMUX('B', 0, AF11)>, /* ETH_RGMII_RXD2 */
-- 
2.17.1