[PATCH 08/12] doc: binding: pwrseq-usb-generic: add binding doc for generic usb power sequence driver
From: robh+dt@kernel.org (Rob Herring)
Date: 2016-06-17 17:16:48
Also in:
linux-devicetree, linux-mmc, linux-pm
On Fri, Jun 17, 2016 at 5:09 AM, Peter Chen [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Add binding doc for generic usb power sequence driver, and update generic usb device binding-doc accordingly. Signed-off-by: Peter Chen <redacted> --- .../bindings/power/pwrseq/pwrseq-usb-generic.txt | 31 ++++++++++++++++++++++ .../devicetree/bindings/usb/usb-device.txt | 2 ++ 2 files changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/pwrseq/pwrseq-usb-generic.txtdiff --git a/Documentation/devicetree/bindings/power/pwrseq/pwrseq-usb-generic.txt b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-usb-generic.txt new file mode 100644 index 0000000..8ad98382 --- /dev/null +++ b/Documentation/devicetree/bindings/power/pwrseq/pwrseq-usb-generic.txt@@ -0,0 +1,31 @@ +The power sequence for generic USB Devices + +Some hard-wired USB devices need to do power sequence to let the +device work normally, the typical power sequence like: enable USB +PHY clock, toggle reset pin, etc. But current Linux USB driver +lacks of such code to do it, it may cause some hard-wired USB devices +works abnormal or can't be recognized by controller at all. The +power sequence will be done before this device can be found at USB +bus. + +Required properties: +- compatible : contains "usb-pwrseq-generic".
In case I have not been clear, no. I am not going to accept anything along the lines of the current mmc pwrseq. I am basically okay with Krzysztof's proposal as it is *only* an added property and not a duplication of information. I'd suggest you figure out how to make the kernel work with that rather than trying to work-around whatever kernel limitations there are. Rob