From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1953415AbdDYSeM (ORCPT ); Tue, 25 Apr 2017 14:34:12 -0400 Received: from mail-qt0-f193.google.com ([209.85.216.193]:35028 "EHLO mail-qt0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1948903AbdDYSdZ (ORCPT ); Tue, 25 Apr 2017 14:33:25 -0400 From: Florian Fainelli To: netdev@vger.kernel.org Cc: rogerq@ti.com, andrew@lunn.ch, davem@davemloft.net, tony@atomide.com, nsekhar@ti.com, jsarha@ti.com, linux-omap@vger.kernel.org, lars@metafoo.de, Florian Fainelli , Rob Herring , Mark Rutland , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel@vger.kernel.org (open list) Subject: [PATCH net-next] dt-bindings: mdio: Clarify binding document Date: Tue, 25 Apr 2017 11:33:03 -0700 Message-Id: <20170425183308.26107-1-f.fainelli@gmail.com> X-Mailer: git-send-email 2.9.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The described GPIO reset property is applicable to *all* child PHYs. If we have one reset line per PHY present on the MDIO bus, these automatically become properties of the child PHY nodes. Finally, indicate how the RESET pulse width must be defined, which is the maximum value of all individual PHYs RESET pulse widths determined by reading their datasheets. Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") Signed-off-by: Florian Fainelli --- Documentation/devicetree/bindings/net/mdio.txt | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/net/mdio.txt b/Documentation/devicetree/bindings/net/mdio.txt index 4ffbbacebda1..96a53f89aa6e 100644 --- a/Documentation/devicetree/bindings/net/mdio.txt +++ b/Documentation/devicetree/bindings/net/mdio.txt @@ -3,13 +3,17 @@ Common MDIO bus properties. These are generic properties that can apply to any MDIO bus. Optional properties: -- reset-gpios: List of one or more GPIOs that control the RESET lines - of the PHYs on that MDIO bus. -- reset-delay-us: RESET pulse width in microseconds as per PHY datasheet. +- reset-gpios: One GPIO that control the RESET lines of all PHYs on that MDIO + bus. +- reset-delay-us: RESET pulse width in microseconds. A list of child nodes, one per device on the bus is expected. These should follow the generic phy.txt, or a device specific binding document. +The 'reset-delay-us' indicates the RESET signal pulse width in microseconds and +applies to all PHY devices. It must therefore be appropriately determined based +on all PHY requirements (maximum value of all per-PHY RESET pulse widths). + Example : This example shows these optional properties, plus other properties required for the TI Davinci MDIO driver. @@ -21,7 +25,7 @@ required for the TI Davinci MDIO driver. #size-cells = <0>; reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; - reset-delay-us = <2>; /* PHY datasheet states 1us min */ + reset-delay-us = <2>; ethphy0: ethernet-phy@1 { reg = <1>; -- 2.9.3 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Fainelli Subject: [PATCH net-next] dt-bindings: mdio: Clarify binding document Date: Tue, 25 Apr 2017 11:33:03 -0700 Message-ID: <20170425183308.26107-1-f.fainelli@gmail.com> Cc: rogerq-l0cyMroinI0@public.gmane.org, andrew-g2DYL2Zd6BY@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, nsekhar-l0cyMroinI0@public.gmane.org, jsarha-l0cyMroinI0@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org, Florian Fainelli , Rob Herring , Mark Rutland , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org (open list) To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org The described GPIO reset property is applicable to *all* child PHYs. If we have one reset line per PHY present on the MDIO bus, these automatically become properties of the child PHY nodes. Finally, indicate how the RESET pulse width must be defined, which is the maximum value of all individual PHYs RESET pulse widths determined by reading their datasheets. Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") Signed-off-by: Florian Fainelli --- Documentation/devicetree/bindings/net/mdio.txt | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/net/mdio.txt b/Documentation/devicetree/bindings/net/mdio.txt index 4ffbbacebda1..96a53f89aa6e 100644 --- a/Documentation/devicetree/bindings/net/mdio.txt +++ b/Documentation/devicetree/bindings/net/mdio.txt @@ -3,13 +3,17 @@ Common MDIO bus properties. These are generic properties that can apply to any MDIO bus. Optional properties: -- reset-gpios: List of one or more GPIOs that control the RESET lines - of the PHYs on that MDIO bus. -- reset-delay-us: RESET pulse width in microseconds as per PHY datasheet. +- reset-gpios: One GPIO that control the RESET lines of all PHYs on that MDIO + bus. +- reset-delay-us: RESET pulse width in microseconds. A list of child nodes, one per device on the bus is expected. These should follow the generic phy.txt, or a device specific binding document. +The 'reset-delay-us' indicates the RESET signal pulse width in microseconds and +applies to all PHY devices. It must therefore be appropriately determined based +on all PHY requirements (maximum value of all per-PHY RESET pulse widths). + Example : This example shows these optional properties, plus other properties required for the TI Davinci MDIO driver. @@ -21,7 +25,7 @@ required for the TI Davinci MDIO driver. #size-cells = <0>; reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; - reset-delay-us = <2>; /* PHY datasheet states 1us min */ + reset-delay-us = <2>; ethphy0: ethernet-phy@1 { reg = <1>; -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Fainelli Subject: [PATCH net-next] dt-bindings: mdio: Clarify binding document Date: Tue, 25 Apr 2017 11:33:03 -0700 Message-ID: <20170425183308.26107-1-f.fainelli@gmail.com> Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: rogerq-l0cyMroinI0@public.gmane.org, andrew-g2DYL2Zd6BY@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org, nsekhar-l0cyMroinI0@public.gmane.org, jsarha-l0cyMroinI0@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org, Florian Fainelli , Rob Herring , Mark Rutland , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list List-Id: devicetree@vger.kernel.org The described GPIO reset property is applicable to *all* child PHYs. If we have one reset line per PHY present on the MDIO bus, these automatically become properties of the child PHY nodes. Finally, indicate how the RESET pulse width must be defined, which is the maximum value of all individual PHYs RESET pulse widths determined by reading their datasheets. Fixes: 69226896ad63 ("mdio_bus: Issue GPIO RESET to PHYs.") Signed-off-by: Florian Fainelli --- Documentation/devicetree/bindings/net/mdio.txt | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/net/mdio.txt b/Documentation/devicetree/bindings/net/mdio.txt index 4ffbbacebda1..96a53f89aa6e 100644 --- a/Documentation/devicetree/bindings/net/mdio.txt +++ b/Documentation/devicetree/bindings/net/mdio.txt @@ -3,13 +3,17 @@ Common MDIO bus properties. These are generic properties that can apply to any MDIO bus. Optional properties: -- reset-gpios: List of one or more GPIOs that control the RESET lines - of the PHYs on that MDIO bus. -- reset-delay-us: RESET pulse width in microseconds as per PHY datasheet. +- reset-gpios: One GPIO that control the RESET lines of all PHYs on that MDIO + bus. +- reset-delay-us: RESET pulse width in microseconds. A list of child nodes, one per device on the bus is expected. These should follow the generic phy.txt, or a device specific binding document. +The 'reset-delay-us' indicates the RESET signal pulse width in microseconds and +applies to all PHY devices. It must therefore be appropriately determined based +on all PHY requirements (maximum value of all per-PHY RESET pulse widths). + Example : This example shows these optional properties, plus other properties required for the TI Davinci MDIO driver. @@ -21,7 +25,7 @@ required for the TI Davinci MDIO driver. #size-cells = <0>; reset-gpios = <&gpio2 5 GPIO_ACTIVE_LOW>; - reset-delay-us = <2>; /* PHY datasheet states 1us min */ + reset-delay-us = <2>; ethphy0: ethernet-phy@1 { reg = <1>; -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html