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Tue, 3 Sep 2019 08:03:46 +0000 From: Philippe Schenker To: "linux-kernel@vger.kernel.org" , Mark Brown , Shawn Guo , Sascha Hauer , Liam Girdwood CC: "devicetree@vger.kernel.org" , Max Krummenacher , Rob Herring , Stefan Agner , Marcel Ziswiler , Mark Rutland , Luka Pivk , Philippe Schenker , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" , Pengutronix Kernel Team , NXP Linux Team Subject: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Thread-Topic: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Thread-Index: AQHVYi4cbo2B9tBfLEa3D4jnCdy4qA== Date: Tue, 3 Sep 2019 08:03:45 +0000 Message-ID: <20190903080336.32288-1-philippe.schenker@toradex.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR0802CA0015.eurprd08.prod.outlook.com (2603:10a6:800:aa::25) To VI1PR0502MB3965.eurprd05.prod.outlook.com (2603:10a6:803:23::29) authentication-results: spf=none (sender IP is ) smtp.mailfrom=philippe.schenker@toradex.com; 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received-spf: None (protection.outlook.com: toradex.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: r281zofcXSOtkHg3Ca5PuqOuDV7THauvNbvjeooMI8u+V2C3hjCEB/6JcV8OYL2f+A3F08mM4d61/nqmgyYaK3avCEBjhGfztjLmbACU7znff1B3pfLcdqBDdoUZfvQyP6kLjC0kiIOKkbRAYG30By355iVDQUxSPTLVD501CHBmsA6H3G76Ojg8BlfhD710A1KfsFzLvHNenilPmaMZJZOvPUS/jYCmQvrxDLgG13Hao5mtN6ibrQNp0CvpJ29Cbg+khTo6Bt8meSFpIQqEVoBv/yAa9BEMcnnwaqgg1obfy86pw6L1fJgAm8zcawdSjD/ltOoy4dWfQq2RoZyC6Ae+ToY5id5gvWGBOrsRUfHGAYqWhvXnmTT8M1OuOdo2jiJhTzjmpui8fDSCyub7OKHUjaGR1Ul6JAEf07Q44S0= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: toradex.com X-MS-Exchange-CrossTenant-Network-Message-Id: c20d5a36-9ee3-4f78-d0b1-08d730453e84 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Sep 2019 08:03:45.8641 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: d9995866-0d9b-4251-8315-093f062abab4 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: EyK0fZ1pybILPSRZMA1d01OBKD+5NvCHlS10qFoGIAVX7LMdc7q6ypUUNOqh5avnv+2i1BtNzBC2h4lLGSskaVdk5uquMpyzJrRJTyvxFgI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0502MB4014 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Our hardware has a FET that is switching power rail of the ethernet PHY on and off. This switching enable signal is a clock from the SoC. There is no possibility in regulator subsystem to have this hardware reflected in software. I already discussed with Mark Brown about possible solutions and he suggested to create at least a new compatible. [1] This discussion includes also a better explanation of our circuit as well as schematics. So please refer to that link if you have questions about that. In this first attempt I created a new binding "regulator-fixed-clock" that can take a clock from devicetree. This is a simple addition to regulator-fixed. If the binding regulator-fixed-clock is given, the clock is simply enabled on regulator enable and disabled on regulator disable. To be able to have multiple consumers a counter variable is also given that tells how many consumers need power from this regulator. Best regards, Philippe [1] https://lkml.org/lkml/2019/8/7/78 Philippe Schenker (3): regulator: fixed: add possibility to enable by clock ARM: dts: imx6ull-colibri: add phy-supply and respective regulator dt-bindings: regulator: add regulator-fixed-clock binding .../bindings/regulator/fixed-regulator.yaml | 18 +++- arch/arm/boot/dts/imx6ull-colibri.dtsi | 12 +++ drivers/regulator/fixed.c | 86 ++++++++++++++++++- 3 files changed, 112 insertions(+), 4 deletions(-) --=20 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philippe Schenker Subject: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Date: Tue, 3 Sep 2019 08:03:45 +0000 Message-ID: <20190903080336.32288-1-philippe.schenker@toradex.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: "linux-kernel@vger.kernel.org" , Mark Brown , Shawn Guo , Sascha Hauer , Liam Girdwood Cc: "devicetree@vger.kernel.org" , Max Krummenacher , Rob Herring , Stefan Agner , Marcel Ziswiler , Mark Rutland , Luka Pivk , Philippe Schenker , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" , Pengutronix Kernel Team , NXP Linux Team List-Id: devicetree@vger.kernel.org Our hardware has a FET that is switching power rail of the ethernet PHY on and off. This switching enable signal is a clock from the SoC. There is no possibility in regulator subsystem to have this hardware reflected in software. I already discussed with Mark Brown about possible solutions and he suggested to create at least a new compatible. [1] This discussion includes also a better explanation of our circuit as well as schematics. So please refer to that link if you have questions about that. In this first attempt I created a new binding "regulator-fixed-clock" that can take a clock from devicetree. This is a simple addition to regulator-fixed. If the binding regulator-fixed-clock is given, the clock is simply enabled on regulator enable and disabled on regulator disable. To be able to have multiple consumers a counter variable is also given that tells how many consumers need power from this regulator. Best regards, Philippe [1] https://lkml.org/lkml/2019/8/7/78 Philippe Schenker (3): regulator: fixed: add possibility to enable by clock ARM: dts: imx6ull-colibri: add phy-supply and respective regulator dt-bindings: regulator: add regulator-fixed-clock binding .../bindings/regulator/fixed-regulator.yaml | 18 +++- arch/arm/boot/dts/imx6ull-colibri.dtsi | 12 +++ drivers/regulator/fixed.c | 86 ++++++++++++++++++- 3 files changed, 112 insertions(+), 4 deletions(-) --=20 2.23.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9414C3A5A2 for ; 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Tue, 3 Sep 2019 08:03:46 +0000 From: Philippe Schenker To: "linux-kernel@vger.kernel.org" , Mark Brown , Shawn Guo , Sascha Hauer , Liam Girdwood Subject: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Thread-Topic: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Thread-Index: AQHVYi4cbo2B9tBfLEa3D4jnCdy4qA== Date: Tue, 3 Sep 2019 08:03:45 +0000 Message-ID: <20190903080336.32288-1-philippe.schenker@toradex.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: VI1PR0802CA0015.eurprd08.prod.outlook.com (2603:10a6:800:aa::25) To VI1PR0502MB3965.eurprd05.prod.outlook.com (2603:10a6:803:23::29) authentication-results: spf=none (sender IP is ) smtp.mailfrom=philippe.schenker@toradex.com; x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.23.0 x-originating-ip: [46.140.72.82] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: c20d5a36-9ee3-4f78-d0b1-08d730453e84 x-microsoft-antispam: BCL:0; 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , "devicetree@vger.kernel.org" , Luka Pivk , Stefan Agner , Marcel Ziswiler , Philippe Schenker , Rob Herring , NXP Linux Team , Max Krummenacher , Fabio Estevam , Pengutronix Kernel Team , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Our hardware has a FET that is switching power rail of the ethernet PHY on and off. This switching enable signal is a clock from the SoC. There is no possibility in regulator subsystem to have this hardware reflected in software. I already discussed with Mark Brown about possible solutions and he suggested to create at least a new compatible. [1] This discussion includes also a better explanation of our circuit as well as schematics. So please refer to that link if you have questions about that. In this first attempt I created a new binding "regulator-fixed-clock" that can take a clock from devicetree. This is a simple addition to regulator-fixed. If the binding regulator-fixed-clock is given, the clock is simply enabled on regulator enable and disabled on regulator disable. To be able to have multiple consumers a counter variable is also given that tells how many consumers need power from this regulator. Best regards, Philippe [1] https://lkml.org/lkml/2019/8/7/78 Philippe Schenker (3): regulator: fixed: add possibility to enable by clock ARM: dts: imx6ull-colibri: add phy-supply and respective regulator dt-bindings: regulator: add regulator-fixed-clock binding .../bindings/regulator/fixed-regulator.yaml | 18 +++- arch/arm/boot/dts/imx6ull-colibri.dtsi | 12 +++ drivers/regulator/fixed.c | 86 ++++++++++++++++++- 3 files changed, 112 insertions(+), 4 deletions(-) -- 2.23.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel