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From: Teresa Remmet <t.remmet@phytec.de>
To: linux-arm-kernel@lists.infradead.org
Cc: Heiko Schocher <hs@denx.de>,
	Jonas Kuenstler <j.kuenstler@phytec.de>,
	Haibo Chen <haibo.chen@nxp.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Fabio Estevam <festevam@gmail.com>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Shawn Guo <shawnguo@kernel.org>, Rob Herring <robh+dt@kernel.org>
Subject: [PATCH v2 3/7] arm64: dts: imx8mp-phycore-som: Reduce drive strength for fec tx lines
Date: Fri, 18 Feb 2022 13:04:54 +0100	[thread overview]
Message-ID: <20220218120458.14036-4-t.remmet@phytec.de> (raw)
In-Reply-To: <20220218120458.14036-1-t.remmet@phytec.de>

Reduce drive strength on fec tx lines for signal quality improvements.
Measurements showed that TD0 and TD1 require X4 and the other lines
X2 for optimized settings.

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
---
 .../arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
index 927290990d02..06e94f6e1702 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-phycore-som.dtsi
@@ -222,12 +222,12 @@ MX8MP_IOMUXC_SAI1_RXD6__ENET1_RGMII_RD2		0x91
 			MX8MP_IOMUXC_SAI1_RXD7__ENET1_RGMII_RD3		0x91
 			MX8MP_IOMUXC_SAI1_TXC__ENET1_RGMII_RXC		0x91
 			MX8MP_IOMUXC_SAI1_TXFS__ENET1_RGMII_RX_CTL	0x91
-			MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0		0x1f
-			MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1		0x1f
-			MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2		0x1f
-			MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3		0x1f
-			MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL	0x1f
-			MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC		0x1f
+			MX8MP_IOMUXC_SAI1_TXD0__ENET1_RGMII_TD0		0x12
+			MX8MP_IOMUXC_SAI1_TXD1__ENET1_RGMII_TD1		0x12
+			MX8MP_IOMUXC_SAI1_TXD2__ENET1_RGMII_TD2		0x14
+			MX8MP_IOMUXC_SAI1_TXD3__ENET1_RGMII_TD3		0x14
+			MX8MP_IOMUXC_SAI1_TXD4__ENET1_RGMII_TX_CTL	0x14
+			MX8MP_IOMUXC_SAI1_TXD5__ENET1_RGMII_TXC		0x14
 			MX8MP_IOMUXC_GPIO1_IO15__GPIO1_IO15		0x11
 		>;
 	};
-- 
2.25.1


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  parent reply	other threads:[~2022-02-18 12:57 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-18 12:04 [PATCH v2 0/7] arm64: dts: phyCORE-i.MX8MP SoM updates Teresa Remmet
2022-02-18 12:04 ` [PATCH v2 1/7] arm64: dts: imx8mp-phycore-som: Set minimum output impedance for eth phy Teresa Remmet
2022-02-18 12:04 ` [PATCH v2 2/7] arm64: dts: imx8mp-phycore-som: Adapt eMMC drive strength Teresa Remmet
2022-02-18 12:04 ` Teresa Remmet [this message]
2022-02-18 12:04 ` [PATCH v2 4/7] arm64: dts: imx8mp-phycore-som: Update WDOG muxing Teresa Remmet
2022-02-18 12:04 ` [PATCH v2 5/7] arm64: dts: imx8mp-phycore-som: Set VDD_ARM run and standby voltage Teresa Remmet
2022-02-18 12:04 ` [PATCH v2 6/7] arm64: dts: imx8mp-phycore-som: LDO5 needs to be enabled instead of LDO4 Teresa Remmet
2022-02-18 12:04 ` [PATCH v2 7/7] arm64: dts: imx8mp-phycore-som: Set usdhc root clock for eMMC Teresa Remmet
2022-02-21  6:11 ` [PATCH v2 0/7] arm64: dts: phyCORE-i.MX8MP SoM updates Shawn Guo

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