| Message ID | 1467226022-10525-1-git-send-email-hdegoede@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, On Wed, Jun 29, 2016 at 08:46:59PM +0200, Hans de Goede wrote: > The auxtek t004 has its otg usb vbus hardwired to 5v (likely in case > people use it to power the board instead of the dedicated power micro > usb connector), it does have an id pin, so it allows full otg > functionality. I don't really get what you're saying here. Is the VBUS hardcoded to 5V, without any way to switch it, or it is not wired at all? In the former case, how can one of the PMIC output be related to the board power input? Thanks, Maxime
Hi, On 29-06-16 22:38, Maxime Ripard wrote: > Hi, > > On Wed, Jun 29, 2016 at 08:46:59PM +0200, Hans de Goede wrote: >> The auxtek t004 has its otg usb vbus hardwired to 5v (likely in case >> people use it to power the board instead of the dedicated power micro >> usb connector), it does have an id pin, so it allows full otg >> functionality. > > I don't really get what you're saying here. Is the VBUS hardcoded to > 5V, without any way to switch it, or it is not wired at all? It is hardwired to 5v, quoting from my commit msg "has its otg usb vbus hardwired to 5v" > In the former case, how can one of the PMIC output be related to the > board power input? I believe it is not wired to the pmic output, but to the pmic 5v input. Regards, Hans
On Thu, Jun 30, 2016 at 11:45:00AM +0200, Hans de Goede wrote: > Hi, > > On 29-06-16 22:38, Maxime Ripard wrote: > >Hi, > > > >On Wed, Jun 29, 2016 at 08:46:59PM +0200, Hans de Goede wrote: > >>The auxtek t004 has its otg usb vbus hardwired to 5v (likely in case > >>people use it to power the board instead of the dedicated power micro > >>usb connector), it does have an id pin, so it allows full otg > >>functionality. > > > >I don't really get what you're saying here. Is the VBUS hardcoded to > >5V, without any way to switch it, or it is not wired at all? > > It is hardwired to 5v, quoting from my commit msg > "has its otg usb vbus hardwired to 5v" > > >In the former case, how can one of the PMIC output be related to the > >board power input? > > I believe it is not wired to the pmic output, but to the pmic 5v input. Weird. Ok, I just applied it. Thanks Maxime
Hi, On 05-07-16 08:54, Maxime Ripard wrote: > On Thu, Jun 30, 2016 at 11:45:00AM +0200, Hans de Goede wrote: >> Hi, >> >> On 29-06-16 22:38, Maxime Ripard wrote: >>> Hi, >>> >>> On Wed, Jun 29, 2016 at 08:46:59PM +0200, Hans de Goede wrote: >>>> The auxtek t004 has its otg usb vbus hardwired to 5v (likely in case >>>> people use it to power the board instead of the dedicated power micro >>>> usb connector), it does have an id pin, so it allows full otg >>>> functionality. >>> >>> I don't really get what you're saying here. Is the VBUS hardcoded to >>> 5V, without any way to switch it, or it is not wired at all? >> >> It is hardwired to 5v, quoting from my commit msg >> "has its otg usb vbus hardwired to 5v" >> >>> In the former case, how can one of the PMIC output be related to the >>> board power input? >> >> I believe it is not wired to the pmic output, but to the pmic 5v input. > > Weird. This is an a10s based hdmi stick, with a axp152 pmic, which does not have separate ac-in / vbus-in and the matching ips out and selection logic. So I guess that when using this pmic boards just wire all the dcdc vin-s to 5v. As said this hdmi dongle has 2 micro-usb connectors one for power only and one for otg. I believe that also want to be able to power the dongle from just the otg (e.g. when connected to a pc), at which point wiring its 5v to the 5v of the micro-usb power connector aka THE 5v line is pretty much the only thing they can do. Note this is all based on observation, no schematics available. > Ok, I just applied it. Thanks. Regards, Hans
diff --git a/arch/arm/boot/dts/sun5i-a10s-auxtek-t004.dts b/arch/arm/boot/dts/sun5i-a10s-auxtek-t004.dts index e15d1ef..7ddebce 100644 --- a/arch/arm/boot/dts/sun5i-a10s-auxtek-t004.dts +++ b/arch/arm/boot/dts/sun5i-a10s-auxtek-t004.dts @@ -130,7 +130,18 @@ status = "okay"; }; +&otg_sram { + status = "okay"; +}; + &pio { + usb0_id_detect_pin: usb0_id_detect_pin@0 { + allwinner,pins = "PG12"; + allwinner,function = "gpio_in"; + allwinner,drive = <SUN4I_PINCTRL_10_MA>; + allwinner,pull = <SUN4I_PINCTRL_PULL_UP>; + }; + mmc0_cd_pin_t004: mmc0_cd_pin@0 { allwinner,pins = "PG1"; allwinner,function = "gpio_in"; @@ -164,11 +175,19 @@ status = "okay"; }; +&usb_otg { + dr_mode = "otg"; + status = "okay"; +}; + &usb1_vbus_pin_a { allwinner,pins = "PG13"; }; &usbphy { + pinctrl-names = "default"; + pinctrl-0 = <&usb0_id_detect_pin>; + usb0_id_det-gpio = <&pio 6 12 GPIO_ACTIVE_HIGH>; /* PG12 */ usb1_vbus-supply = <®_usb1_vbus>; status = "okay"; };
The auxtek t004 has its otg usb vbus hardwired to 5v (likely in case people use it to power the board instead of the dedicated power micro usb connector), it does have an id pin, so it allows full otg functionality. Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- arch/arm/boot/dts/sun5i-a10s-auxtek-t004.dts | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)