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AR-1 - Adding support category for distributions AR-4 - Remove Allwinner legacy AR-5 - Drop Udoo family and move Udoo board into newly created imx6 family AR-9 - Rename sunxi-next to sunxi-legacy AR-10 - Rename sunxi-dev to sunxi-current AR-11 - Adding Radxa Rockpi S support AR-13 - Rename rockchip64-default to rockchip64-legacy AR-14 - Add rockchip64-current as mainline source AR-15 - Drop Rockchip 4.19.y NEXT, current become 5.3.y AR-16 - Rename RK3399 default to legacy AR-17 - Rename Odroid XU4 next and default to legacy 4.14.y, add DEV 5.4.y AR-18 - Add Odroid N2 current mainline AR-19 - Move Odroid C1 to meson family AR-20 - Rename mvebu64-default to mvebu64-legacy AR-21 - Rename mvebu-default to mvebu-legacy AR-22 - Rename mvebu-next to mvebu-current AR-23 - Drop meson64 default and next, current becomes former DEV 5.3.y AR-24 - Drop cubox family and move Cubox/Hummingboard boards under imx6 AR-26 - Adjust motd AR-27 - Enabling distribution release status AR-28 - Added new GCC compilers AR-29 - Implementing Ubuntu Eoan AR-30 - Add desktop packages per board or family AR-31 - Remove (Ubuntu/Debian) distribution name from image filename AR-32 - Move arch configs from configuration.sh to separate arm64 and armhf config files AR-33 - Revision numbers for beta builds changed to day_in_the_year AR-34 - Patches support linked patches AR-35 - Break meson64 family into gxbb and gxl AR-36 - Add Nanopineo2 Black AR-38 - Upgrade option from old branches to new one via armbian-config AR-41 - Show full timezone info AR-43 - Merge Odroid N2 to meson64 AR-44 - Enable FORCE_BOOTSCRIPT_UPDATE for all builds
73 lines
2.4 KiB
Diff
73 lines
2.4 KiB
Diff
From f5528e96b7dd2b30e1accc518df85d14baad6bae Mon Sep 17 00:00:00 2001
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From: Peter Chen <peter.chen@nxp.com>
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Date: Thu, 18 May 2017 08:48:57 +0800
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Subject: [PATCH 1/9] binding-doc: power: pwrseq-generic: add binding doc for
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generic power sequence library
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Add binding doc for generic power sequence library.
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Signed-off-by: Peter Chen <peter.chen@nxp.com>
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Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
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Acked-by: Rob Herring <robh@kernel.org>
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---
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.../bindings/power/pwrseq/pwrseq-generic.txt | 48 +++++++++++++++++++
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1 file changed, 48 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
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diff --git a/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
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new file mode 100644
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index 000000000000..ebf0d477b688
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-generic.txt
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@@ -0,0 +1,48 @@
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+The generic power sequence library
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+
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+Some hard-wired devices (eg USB/MMC) need to do power sequence before
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+the device can be enumerated on the bus, the typical power sequence
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+like: enable USB PHY clock, toggle reset pin, etc. But current
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+Linux device driver lacks of such code to do it, it may cause some
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+hard-wired devices works abnormal or can't be recognized by
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+controller at all. The power sequence will be done before this device
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+can be found at the bus.
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+
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+The power sequence properties is under the device node.
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+
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+Optional properties:
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+- clocks: the input clocks for device.
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+- reset-gpios: Should specify the GPIO for reset.
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+- reset-duration-us: the duration in microsecond for assert reset signal.
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+
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+Below is the example of USB power sequence properties on USB device
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+nodes which have two level USB hubs.
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+
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+&usbotg1 {
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+ vbus-supply = <®_usb_otg1_vbus>;
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&pinctrl_usb_otg1_id>;
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+ status = "okay";
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+
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ genesys: hub@1 {
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+ compatible = "usb5e3,608";
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+ reg = <1>;
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+
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+ clocks = <&clks IMX6SX_CLK_CKO>;
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+ reset-gpios = <&gpio4 5 GPIO_ACTIVE_LOW>; /* hub reset pin */
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+ reset-duration-us = <10>;
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+
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ asix: ethernet@1 {
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+ compatible = "usbb95,1708";
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+ reg = <1>;
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+
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+ clocks = <&clks IMX6SX_CLK_IPG>;
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+ reset-gpios = <&gpio4 6 GPIO_ACTIVE_LOW>; /* ethernet_rst */
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+ reset-duration-us = <15>;
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+ };
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+ };
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+};
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--
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2.20.1
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