From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Armstrong Subject: [RFC 02/11] dt-bindings: power: amlogic, meson-gx-pwrc: Add SM1 bindings Date: Mon, 1 Jul 2019 12:46:56 +0200 Message-ID: <20190701104705.18271-3-narmstrong@baylibre.com> References: <20190701104705.18271-1-narmstrong@baylibre.com> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190701104705.18271-1-narmstrong@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org To: jbrunet@baylibre.com, khilman@baylibre.com, devicetree@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, Neil Armstrong List-Id: devicetree@vger.kernel.org Add bindings for the Amlogic SM1 Power control: - the VPU power control compatible - the general-purpose power controller, controlling the USB, PCIe, NNA and GE2D power domains. Signed-off-by: Neil Armstrong --- .../bindings/power/amlogic,meson-gx-pwrc.txt | 35 +++++++++++++++++++ include/dt-bindings/power/meson-sm1-power.h | 15 ++++++++ 2 files changed, 50 insertions(+) create mode 100644 include/dt-bindings/power/meson-sm1-power.h diff --git a/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt index 0fdc3dd1125e..f0a1e20555bf 100644 --- a/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt +++ b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt @@ -19,6 +19,7 @@ Required properties: - compatible: should be one of the following : - "amlogic,meson-gx-pwrc-vpu" for the Meson GX SoCs - "amlogic,meson-g12a-pwrc-vpu" for the Meson G12A SoCs + - "amlogic,meson-sm1-pwrc-vpu" for the Meson SM1 SoCs - #power-domain-cells: should be 0 - amlogic,hhi-sysctrl: phandle to the HHI sysctrl node - resets: phandles to the reset lines needed for this power demain sequence @@ -60,4 +61,38 @@ ao_sysctrl: sys-ctrl@0 { }; }; +General Purpose Power Controller +-------------------------------- +The Amlogic SM1 SoCs embeds a General Purpose Power Controller used +to control the power domain for, at least, the USB PHYs and PCIe +peripherals. + + +Device Tree Bindings: +--------------------- + +Required properties: +- compatible: should be one of the following : + - "amlogic,meson-sm1-pwrc" for the Meson SM1 SoCs +- #power-domain-cells: should be 0 +- amlogic,hhi-sysctrl: phandle to the HHI sysctrl node + +Parent node should have the following properties : +- compatible: "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd" +- reg: base address and size of the AO system control register space. + + +Example: +------- + +ao_sysctrl: sys-ctrl@0 { + compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd"; + reg = <0x0 0x0 0x0 0x100>; + + pwrc: power-controller { + compatible = "amlogic,meson-sm1-pwrc"; + #power-domain-cells = <1>; + amlogic,hhi-sysctrl = <&hhi>; + }; +}; diff --git a/include/dt-bindings/power/meson-sm1-power.h b/include/dt-bindings/power/meson-sm1-power.h new file mode 100644 index 000000000000..30e17e4a478e --- /dev/null +++ b/include/dt-bindings/power/meson-sm1-power.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: (GPL-2.0+ or MIT) */ +/* + * Copyright (c) 2019 BayLibre, SAS + * Author: Neil Armstrong + */ + +#ifndef _DT_BINDINGS_MESON_SM1_POWER_H +#define _DT_BINDINGS_MESON_SM1_POWER_H + +#define PWRC_SM1_NNA_ID 0 +#define PWRC_SM1_USB_ID 1 +#define PWRC_SM1_PCIE_ID 2 +#define PWRC_SM1_GE2D_ID 3 + +#endif -- 2.21.0