lkml.org 
[lkml]   [2018]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v2] usb: typec: get the vbus source and charge values from the devicetree
From
Date
On 09/09/2018 11:05 AM, Angus Ainslie (Purism) wrote:
> If the board is being powered by USB disabling the source and sink
> can remove power from the board. Allow the source and sink to be
> initallized based on devicetree values.
>
> Changed since V1:
>
> use devicetree values instead of hardcoded initialization.
>
> Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca>
> ---
> .../bindings/connector/usb-connector.txt | 4 ++++
> drivers/usb/typec/tcpm.c | 14 +++++++++++---
> 2 files changed, 15 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.txt b/Documentation/devicetree/bindings/connector/usb-connector.txt
> index 8855bfcfd778..afe851a713c3 100644
> --- a/Documentation/devicetree/bindings/connector/usb-connector.txt
> +++ b/Documentation/devicetree/bindings/connector/usb-connector.txt
> @@ -22,6 +22,10 @@ Optional properties for usb-c-connector:
> or Try.SRC, should be "sink" for Try.SNK or "source" for Try.SRC.
> - data-role: should be one of "host", "device", "dual"(DRD) if typec
> connector supports USB data.
> +- init-vbus-source: set the initalization value for vbus-source to true.
> + If this property is not present the initial value will be false.
> +- init-vbus-charge: set the initalization value for vbus-charge to true.
> + If this property is not present the initial value will be false.
>
This change will require DT maintainer approval.

Thanks,
Guenter

> Required properties for usb-c-connector with power delivery support:
> - source-pdos: An array of u32 with each entry providing supported power
> diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c
> index ca7bedb46f7f..7f5d4f209e07 100644
> --- a/drivers/usb/typec/tcpm.c
> +++ b/drivers/usb/typec/tcpm.c
> @@ -2462,9 +2462,7 @@ static int tcpm_init_vbus(struct tcpm_port *port)
> {
> int ret;
>
> - ret = port->tcpc->set_vbus(port->tcpc, false, false);
> - port->vbus_source = false;
> - port->vbus_charge = false;
> + ret = port->tcpc->set_vbus(port->tcpc, port->vbus_source, port->vbus_charge);
> return ret;
> }
>
> @@ -4266,6 +4264,16 @@ static int tcpm_fw_get_caps(struct tcpm_port *port,
> return -EINVAL;
> port->port_type = port->typec_caps.type;
>
> + if (fwnode_property_present(fwnode, "init-vbus-source"))
> + port->vbus_source = true;
> + else
> + port->vbus_source = false;
> +
> + if (fwnode_property_present(fwnode, "init-vbus-charge"))
> + port->vbus_charge = true;
> + else
> + port->vbus_charge = false;
> +
> if (port->port_type == TYPEC_PORT_SNK)
> goto sink;
>


\
 
 \ /
  Last update: 2018-09-09 21:53    [W:0.076 / U:0.144 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site