From: Philippe Schenker <philippe.schenker@toradex.com> To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Mark Brown <broonie@kernel.org>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, Liam Girdwood <lgirdwood@gmail.com> Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, Max Krummenacher <max.krummenacher@toradex.com>, Rob Herring <robh+dt@kernel.org>, Stefan Agner <stefan.agner@toradex.com>, Marcel Ziswiler <marcel.ziswiler@toradex.com>, Mark Rutland <mark.rutland@arm.com>, Luka Pivk <luka.pivk@toradex.com>, Philippe Schenker <philippe.schenker@toradex.com>, Fabio Estevam <festevam@gmail.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Pengutronix Kernel Team <kernel@pengutronix.de>, NXP Linux Team <linux-imx@nxp.com> Subject: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Date: Tue, 3 Sep 2019 08:03:45 +0000 [thread overview] Message-ID: <20190903080336.32288-1-philippe.schenker@toradex.com> (raw) 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
WARNING: multiple messages have this Message-ID (diff)
From: Philippe Schenker <philippe.schenker@toradex.com> To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, Mark Brown <broonie@kernel.org>, Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, Liam Girdwood <lgirdwood@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com>, "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>, Luka Pivk <luka.pivk@toradex.com>, Stefan Agner <stefan.agner@toradex.com>, Marcel Ziswiler <marcel.ziswiler@toradex.com>, Philippe Schenker <philippe.schenker@toradex.com>, Rob Herring <robh+dt@kernel.org>, NXP Linux Team <linux-imx@nxp.com>, Max Krummenacher <max.krummenacher@toradex.com>, Fabio Estevam <festevam@gmail.com>, Pengutronix Kernel Team <kernel@pengutronix.de>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org> Subject: [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Date: Tue, 3 Sep 2019 08:03:45 +0000 [thread overview] Message-ID: <20190903080336.32288-1-philippe.schenker@toradex.com> (raw) 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
next reply other threads:[~2019-09-03 8:03 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-03 8:03 Philippe Schenker [this message] 2019-09-03 8:03 ` [PATCH 0/3] Add new binding regulator-fixed-clock to regulator-fixed Philippe Schenker 2019-09-03 8:03 ` Philippe Schenker 2019-09-03 8:03 ` [PATCH 1/3] regulator: fixed: add possibility to enable by clock Philippe Schenker 2019-09-05 18:06 ` Mark Brown 2019-09-10 6:08 ` Philippe Schenker 2019-09-10 6:14 ` Philippe Schenker 2019-09-03 8:03 ` [PATCH 2/3] ARM: dts: imx6ull-colibri: add phy-supply and respective regulator Philippe Schenker 2019-09-03 8:03 ` Philippe Schenker 2019-09-03 8:03 ` Philippe Schenker 2019-09-03 8:03 ` [PATCH 3/3] dt-bindings: regulator: add regulator-fixed-clock binding Philippe Schenker 2019-09-03 8:45 ` Rob Herring 2019-09-04 8:07 ` Philippe Schenker 2019-09-04 9:06 ` Rob Herring
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