renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 05:04:00 +08:00
Code
6d996f361b
linux-next/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt

57 lines
2.0 KiB
Plaintext
Raw Normal View History

PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
Allwinner sun4i USB PHY
-----------------------
Required properties:
Documentation: dt: Add new compatible for the A31 USB Phy Document the freshly introduced compatible for the USB phy in use in the Allwinner A31 SoC. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-05-14 20:58:57 +08:00
- compatible : should be one of
* allwinner,sun4i-a10-usb-phy
* allwinner,sun5i-a13-usb-phy
* allwinner,sun6i-a31-usb-phy
* allwinner,sun7i-a20-usb-phy
phy-sun4i-usb: Add support for the usb-phys on the sun8i-a23 SoC The usb-phys on the sun8i-a23 SoC have the same setup wrt clocks as on the sun6i-a31 SoC, but there are only 2 instead of 3 like on the sun5i-a13 SoC. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:48 +08:00
* allwinner,sun8i-a23-usb-phy
phy-sun4i-usb: Add support for the usb-phys on the sun8i-a33 SoC The usb-phys on the sun8i-a33 SoC are mostly the same as sun8i-a23 but for some reason (hw bug?) the phyctl register was moved to a different address and is not initialized to 0 on reset. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:49 +08:00
* allwinner,sun8i-a33-usb-phy
phy-sun4i-usb: Add support for the host usb-phys found on the H3 SoC Note this commit only adds support for phys 1-3, phy 0, the otg phy, is not yet (fully) supported after this commit. Signed-off-by: Reinder de Haan <patchesrdh@mveas.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-12-11 23:32:18 +08:00
* allwinner,sun8i-h3-usb-phy
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
- reg : a list of offset + length pairs
Documentation: dt: Add new compatible for the A31 USB Phy Document the freshly introduced compatible for the USB phy in use in the Allwinner A31 SoC. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-05-14 20:58:57 +08:00
- reg-names :
* "phy_ctrl"
* "pmu1"
* "pmu2" for sun4i, sun6i or sun7i
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
- #phy-cells : from the generic phy bindings, must be 1
Documentation: dt: Add new compatible for the A31 USB Phy Document the freshly introduced compatible for the USB phy in use in the Allwinner A31 SoC. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-05-14 20:58:57 +08:00
- clocks : phandle + clock specifier for the phy clocks
- clock-names :
* "usb_phy" for sun4i, sun5i or sun7i
* "usb0_phy", "usb1_phy" and "usb2_phy" for sun6i
phy-sun4i-usb: Add support for the usb-phys on the sun8i-a23 SoC The usb-phys on the sun8i-a23 SoC have the same setup wrt clocks as on the sun6i-a31 SoC, but there are only 2 instead of 3 like on the sun5i-a13 SoC. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:48 +08:00
* "usb0_phy", "usb1_phy" for sun8i
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
- resets : a list of phandle + reset specifier pairs
Documentation: dt: Add new compatible for the A31 USB Phy Document the freshly introduced compatible for the USB phy in use in the Allwinner A31 SoC. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-05-14 20:58:57 +08:00
- reset-names :
* "usb0_reset"
* "usb1_reset"
* "usb2_reset" for sun4i, sun6i or sun7i
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
phy-sun4i-usb: Add id and vbus detection support for the otg phy (phy0) The usb0 phy is connected to an OTG controller, and as such needs some special handling: 1) It allows explicit control over the pullups, enable these on phy_init and disable them on phy_exit. 2) It has bits to signal id and vbus detect to the musb-core, add support for for monitoring id and vbus detect gpio-s for use in dual role mode, and set these bits to the correct values for operating in host only mode when no gpios are specified in the devicetree. While updating the devicetree binding documentation also add documentation for the sofar undocumented usage of regulators for vbus for all 3 phys. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:45 +08:00
Optional properties:
- usb0_id_det-gpios : gpio phandle for reading the otg id pin value
- usb0_vbus_det-gpios : gpio phandle for detecting the presence of usb0 vbus
phy-sun4i-usb: Add support for monitoring vbus via a power-supply On some boards there is no vbus_det gpio pin, instead vbus-detection for otg can be done via the pmic. This commit adds support for monitoring vbus_det via the power_supply exported by the pmic, enabling support for otg on these boards. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:51 +08:00
- usb0_vbus_power-supply: power-supply phandle for usb0 vbus presence detect
phy-sun4i-usb: Add id and vbus detection support for the otg phy (phy0) The usb0 phy is connected to an OTG controller, and as such needs some special handling: 1) It allows explicit control over the pullups, enable these on phy_init and disable them on phy_exit. 2) It has bits to signal id and vbus detect to the musb-core, add support for for monitoring id and vbus detect gpio-s for use in dual role mode, and set these bits to the correct values for operating in host only mode when no gpios are specified in the devicetree. While updating the devicetree binding documentation also add documentation for the sofar undocumented usage of regulators for vbus for all 3 phys. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:45 +08:00
- usb0_vbus-supply : regulator phandle for controller usb0 vbus
- usb1_vbus-supply : regulator phandle for controller usb1 vbus
- usb2_vbus-supply : regulator phandle for controller usb2 vbus
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
Example:
usbphy: phy@0x01c13400 {
#phy-cells = <1>;
compatible = "allwinner,sun4i-a10-usb-phy";
/* phy base regs, phy1 pmu reg, phy2 pmu reg */
reg = <0x01c13400 0x10 0x01c14800 0x4 0x01c1c800 0x4>;
reg-names = "phy_ctrl", "pmu1", "pmu2";
clocks = <&usb_clk 8>;
clock-names = "usb_phy";
phy-sun4i-usb: Add id and vbus detection support for the otg phy (phy0) The usb0 phy is connected to an OTG controller, and as such needs some special handling: 1) It allows explicit control over the pullups, enable these on phy_init and disable them on phy_exit. 2) It has bits to signal id and vbus detect to the musb-core, add support for for monitoring id and vbus detect gpio-s for use in dual role mode, and set these bits to the correct values for operating in host only mode when no gpios are specified in the devicetree. While updating the devicetree binding documentation also add documentation for the sofar undocumented usage of regulators for vbus for all 3 phys. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-06-13 20:37:45 +08:00
resets = <&usb_clk 0>, <&usb_clk 1>, <&usb_clk 2>;
reset-names = "usb0_reset", "usb1_reset", "usb2_reset";
pinctrl-names = "default";
pinctrl-0 = <&usb0_id_detect_pin>, <&usb0_vbus_detect_pin>;
usb0_id_det-gpios = <&pio 7 19 GPIO_ACTIVE_HIGH>; /* PH19 */
usb0_vbus_det-gpios = <&pio 7 22 GPIO_ACTIVE_HIGH>; /* PH22 */
usb0_vbus-supply = <&reg_usb0_vbus>;
usb1_vbus-supply = <&reg_usb1_vbus>;
usb2_vbus-supply = <&reg_usb2_vbus>;
PHY: sunxi: Add driver for sunxi usb phy The Allwinner A1x / A2x SoCs have 2 or 3 usb phys which are all accessed through a single set of registers. Besides this there are also some other phy related bits which need poking, which are per phy, but shared between the ohci and ehci controllers, so these are also controlled from this new phy driver. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2014-03-02 01:09:26 +08:00
};
Copy Permalink