From: Roger Quadros <rogerq@kernel.org> To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>, Tero Kristo <kristo@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org> Cc: srk@ti.com, s-vadapalli@ti.com, r-gunasekaran@ti.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros <rogerq@kernel.org> Subject: [PATCH] arm: dts: ti: beagleplay: Fix Ethernet PHY RESET GPIOs Date: Thu, 29 Feb 2024 18:25:15 +0200 [thread overview] Message-ID: <20240229-b4-for-v6-9-am65-beagleplay-ethernet-reset-v1-1-b3e4b33378bd@kernel.org> (raw) The RESET GPIO pinmux should be part of MDIO bus node so that they can be in the right state before the PHY can be probed via MDIO bus scan. Add GPIO reset for the Gigabit Ethernet PHY. As per RTL8211F datasheet, reset assert width is 10ms and PHY registers can be access accessed after 50ms of reset deassert. Signed-off-by: Roger Quadros <rogerq@kernel.org> --- arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts index a34e0df2ab86..77240cf3ae4d 100644 --- a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts +++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts @@ -292,6 +292,8 @@ mdio0_pins_default: mdio0-default-pins { pinctrl-single,pins = < AM62X_IOPAD(0x0160, PIN_OUTPUT, 0) /* (AD24) MDIO0_MDC */ AM62X_IOPAD(0x015c, PIN_INPUT, 0) /* (AB22) MDIO0_MDIO */ + AM62X_IOPAD(0x003c, PIN_INPUT, 7) /* (M25) GPMC0_AD0.GPIO0_15 */ + AM62X_IOPAD(0x018c, PIN_OUTPUT, 7) /* (AC21) RGMII2_RD2.GPIO1_5 */ >; }; @@ -383,7 +385,6 @@ AM62X_IOPAD(0x017c, PIN_INPUT, 1) /* (AD22) RGMII2_RX_CTL.RMII2_RX_ER */ AM62X_IOPAD(0x016c, PIN_INPUT, 1) /* (Y18) RGMII2_TD0.RMII2_TXD0 */ AM62X_IOPAD(0x0170, PIN_INPUT, 1) /* (AA18) RGMII2_TD1.RMII2_TXD1 */ AM62X_IOPAD(0x0164, PIN_INPUT, 1) /* (AA19) RGMII2_TX_CTL.RMII2_TX_EN */ - AM62X_IOPAD(0x018c, PIN_OUTPUT, 7) /* (AC21) RGMII2_RD2.GPIO1_5 */ AM62X_IOPAD(0x0190, PIN_INPUT, 7) /* (AE22) RGMII2_RD3.GPIO1_6 */ AM62X_IOPAD(0x01f0, PIN_OUTPUT, 5) /* (A18) EXT_REFCLK1.CLKOUT0 */ >; @@ -597,6 +598,9 @@ &cpsw3g_mdio { cpsw3g_phy0: ethernet-phy@0 { reg = <0>; + reset-gpios = <&main_gpio0 15 GPIO_ACTIVE_LOW>; + reset-assert-us = <10000>; + reset-deassert-us = <50000>; }; cpsw3g_phy1: ethernet-phy@1 { @@ -615,7 +619,7 @@ &main_gpio0 { "USR0", "USR1", "USR2", "USR3", "", "", "USR4", /* 3-9 */ "EEPROM_WP", /* 10 */ "CSI2_CAMERA_GPIO1", "CSI2_CAMERA_GPIO2", /* 11-12 */ - "CC1352P7_BOOT", "CC1352P7_RSTN", "", "", "", /* 13-17 */ + "CC1352P7_BOOT", "CC1352P7_RSTN", "GBE_RSTN", "", "", /* 13-17 */ "USR_BUTTON", "", "", "", "", "", "", "", "", /* 18-26 */ "", "", "", "", "", "", "", "", "", "HDMI_INT", /* 27-36 */ "", "VDD_WLAN_EN", "", "", "WL_IRQ", "GBE_INTN",/* 37-42 */ --- base-commit: bbef42084cc170cbfc035bf784f2ff055c939d7e change-id: 20240229-b4-for-v6-9-am65-beagleplay-ethernet-reset-098f274fbf15 Best regards, -- Roger Quadros <rogerq@kernel.org>
WARNING: multiple messages have this Message-ID (diff)
From: Roger Quadros <rogerq@kernel.org> To: Nishanth Menon <nm@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>, Tero Kristo <kristo@kernel.org>, Rob Herring <robh+dt@kernel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org> Cc: srk@ti.com, s-vadapalli@ti.com, r-gunasekaran@ti.com, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Roger Quadros <rogerq@kernel.org> Subject: [PATCH] arm: dts: ti: beagleplay: Fix Ethernet PHY RESET GPIOs Date: Thu, 29 Feb 2024 18:25:15 +0200 [thread overview] Message-ID: <20240229-b4-for-v6-9-am65-beagleplay-ethernet-reset-v1-1-b3e4b33378bd@kernel.org> (raw) The RESET GPIO pinmux should be part of MDIO bus node so that they can be in the right state before the PHY can be probed via MDIO bus scan. Add GPIO reset for the Gigabit Ethernet PHY. As per RTL8211F datasheet, reset assert width is 10ms and PHY registers can be access accessed after 50ms of reset deassert. Signed-off-by: Roger Quadros <rogerq@kernel.org> --- arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts index a34e0df2ab86..77240cf3ae4d 100644 --- a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts +++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts @@ -292,6 +292,8 @@ mdio0_pins_default: mdio0-default-pins { pinctrl-single,pins = < AM62X_IOPAD(0x0160, PIN_OUTPUT, 0) /* (AD24) MDIO0_MDC */ AM62X_IOPAD(0x015c, PIN_INPUT, 0) /* (AB22) MDIO0_MDIO */ + AM62X_IOPAD(0x003c, PIN_INPUT, 7) /* (M25) GPMC0_AD0.GPIO0_15 */ + AM62X_IOPAD(0x018c, PIN_OUTPUT, 7) /* (AC21) RGMII2_RD2.GPIO1_5 */ >; }; @@ -383,7 +385,6 @@ AM62X_IOPAD(0x017c, PIN_INPUT, 1) /* (AD22) RGMII2_RX_CTL.RMII2_RX_ER */ AM62X_IOPAD(0x016c, PIN_INPUT, 1) /* (Y18) RGMII2_TD0.RMII2_TXD0 */ AM62X_IOPAD(0x0170, PIN_INPUT, 1) /* (AA18) RGMII2_TD1.RMII2_TXD1 */ AM62X_IOPAD(0x0164, PIN_INPUT, 1) /* (AA19) RGMII2_TX_CTL.RMII2_TX_EN */ - AM62X_IOPAD(0x018c, PIN_OUTPUT, 7) /* (AC21) RGMII2_RD2.GPIO1_5 */ AM62X_IOPAD(0x0190, PIN_INPUT, 7) /* (AE22) RGMII2_RD3.GPIO1_6 */ AM62X_IOPAD(0x01f0, PIN_OUTPUT, 5) /* (A18) EXT_REFCLK1.CLKOUT0 */ >; @@ -597,6 +598,9 @@ &cpsw3g_mdio { cpsw3g_phy0: ethernet-phy@0 { reg = <0>; + reset-gpios = <&main_gpio0 15 GPIO_ACTIVE_LOW>; + reset-assert-us = <10000>; + reset-deassert-us = <50000>; }; cpsw3g_phy1: ethernet-phy@1 { @@ -615,7 +619,7 @@ &main_gpio0 { "USR0", "USR1", "USR2", "USR3", "", "", "USR4", /* 3-9 */ "EEPROM_WP", /* 10 */ "CSI2_CAMERA_GPIO1", "CSI2_CAMERA_GPIO2", /* 11-12 */ - "CC1352P7_BOOT", "CC1352P7_RSTN", "", "", "", /* 13-17 */ + "CC1352P7_BOOT", "CC1352P7_RSTN", "GBE_RSTN", "", "", /* 13-17 */ "USR_BUTTON", "", "", "", "", "", "", "", "", /* 18-26 */ "", "", "", "", "", "", "", "", "", "HDMI_INT", /* 27-36 */ "", "VDD_WLAN_EN", "", "", "WL_IRQ", "GBE_INTN",/* 37-42 */ --- base-commit: bbef42084cc170cbfc035bf784f2ff055c939d7e change-id: 20240229-b4-for-v6-9-am65-beagleplay-ethernet-reset-098f274fbf15 Best regards, -- Roger Quadros <rogerq@kernel.org> _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2024-02-29 16:25 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-29 16:25 Roger Quadros [this message] 2024-02-29 16:25 ` [PATCH] arm: dts: ti: beagleplay: Fix Ethernet PHY RESET GPIOs Roger Quadros 2024-03-01 20:58 ` Roger Quadros 2024-03-01 20:58 ` Roger Quadros 2024-03-01 21:29 ` Roger Quadros 2024-03-01 21:29 ` Roger Quadros 2024-03-04 4:24 ` Vignesh Raghavendra 2024-03-04 4:24 ` Vignesh Raghavendra 2024-03-05 8:43 ` Roger Quadros 2024-03-05 8:43 ` Roger Quadros
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