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Message-ID: <CAGZ6i=1XxwaWv0uOk4S+_UD7An-q8hQgqyu3h2cup9ZJHCKR0A@mail.gmail.com>
Date: Fri, 12 Feb 2021 15:28:31 +0800
From: Kyle Tso <kyletso@...gle.com>
To: Guenter Roeck <linux@...ck-us.net>
Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Greg KH <gregkh@...uxfoundation.org>,
Hans de Goede <hdegoede@...hat.com>,
Rob Herring <robh+dt@...nel.org>,
Badhri Jagan Sridharan <badhri@...gle.com>,
USB <linux-usb@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>
Subject: Re: [PATCH v6 6/7] dt-bindings: connector: Add SVDM VDO properties
On Fri, Feb 12, 2021 at 12:21 PM Guenter Roeck <linux@...ck-us.net> wrote:
>
> On Fri, Feb 05, 2021 at 11:34:14AM +0800, Kyle Tso wrote:
> > Add bindings of VDO properties of USB PD SVDM so that they can be
> > used in device tree.
> >
> > Signed-off-by: Kyle Tso <kyletso@...gle.com>
>
> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>
> Would it be possible to unify the dt definitions with the definitions
> in include/linux/usb/pd_vdo.h ? I don't really like the duplication.
>
> Thanks,
> Guenter
>
That's my question as well.
But I don't know how to do that.
Is it doable to include "include/linux/usb/pd_vdo.h" in the dt-bindings?
thanks,
Kyle
> > ---
> > Changes since v5:
> > - no change
> >
> > .../bindings/connector/usb-connector.yaml | 11 +
> > include/dt-bindings/usb/pd.h | 311 +++++++++++++++++-
> > 2 files changed, 321 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> > index 4286ed767a0a..d385026944ec 100644
> > --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
> > +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> > @@ -137,6 +137,17 @@ properties:
> > maxItems: 7
> > $ref: /schemas/types.yaml#/definitions/uint32-array
> >
> > + sink-vdos:
> > + description: An array of u32 with each entry (VDM Objects) providing additional information
> > + corresponding to the product, the detailed bit definitions and the order of each VDO can be
> > + found in "USB Power Delivery Specification Revision 3.0, Version 2.0 + ECNs 2020-12-10"
> > + chapter 6.4.4.3.1 Discover Identity. User can specify the VDO array via
> > + VDO_IDH/_CERT/_PRODUCT/_UFP/_DFP/_PCABLE/_ACABLE(1/2)/_VPD() defined in
> > + dt-bindings/usb/pd.h.
> > + minItems: 3
> > + maxItems: 6
> > + $ref: /schemas/types.yaml#/definitions/uint32-array
> > +
> > op-sink-microwatt:
> > description: Sink required operating power in microwatt, if source can't
> > offer the power, Capability Mismatch is set. Required for power sink and
> > diff --git a/include/dt-bindings/usb/pd.h b/include/dt-bindings/usb/pd.h
> > index 0352893697f0..fef3ef65967f 100644
> > --- a/include/dt-bindings/usb/pd.h
> > +++ b/include/dt-bindings/usb/pd.h
> > @@ -93,4 +93,313 @@
> > #define FRS_DEFAULT_POWER 1
> > #define FRS_5V_1P5A 2
> > #define FRS_5V_3A 3
> > - #endif /* __DT_POWER_DELIVERY_H */
> > +
> > +/*
> > + * SVDM Identity Header
> > + * --------------------
> > + * <31> :: data capable as a USB host
> > + * <30> :: data capable as a USB device
> > + * <29:27> :: product type (UFP / Cable / VPD)
> > + * <26> :: modal operation supported (1b == yes)
> > + * <25:23> :: product type (DFP) (SVDM version 2.0+ only; set to zero in version 1.0)
> > + * <22:21> :: connector type (SVDM version 2.0+ only; set to zero in version 1.0)
> > + * <20:16> :: Reserved, Shall be set to zero
> > + * <15:0> :: USB-IF assigned VID for this cable vendor
> > + */
> > +/* SOP Product Type (UFP) */
> > +#define IDH_PTYPE_NOT_UFP 0
> > +#define IDH_PTYPE_HUB 1
> > +#define IDH_PTYPE_PERIPH 2
> > +#define IDH_PTYPE_PSD 3
> > +#define IDH_PTYPE_AMA 5
> > +
> > +/* SOP' Product Type (Cable Plug / VPD) */
> > +#define IDH_PTYPE_NOT_CABLE 0
> > +#define IDH_PTYPE_PCABLE 3
> > +#define IDH_PTYPE_ACABLE 4
> > +#define IDH_PTYPE_VPD 6
> > +
> > +/* SOP Product Type (DFP) */
> > +#define IDH_PTYPE_NOT_DFP 0
> > +#define IDH_PTYPE_DFP_HUB 1
> > +#define IDH_PTYPE_DFP_HOST 2
> > +#define IDH_PTYPE_DFP_PB 3
> > +
> > +#define VDO_IDH(usbh, usbd, ufp_cable, is_modal, dfp, conn, vid) \
> > + ((usbh) << 31 | (usbd) << 30 | ((ufp_cable) & 0x7) << 27 \
> > + | (is_modal) << 26 | ((dfp) & 0x7) << 23 | ((conn) & 0x3) << 21 \
> > + | ((vid) & 0xffff))
> > +
> > +/*
> > + * Cert Stat VDO
> > + * -------------
> > + * <31:0> : USB-IF assigned XID for this cable
> > + */
> > +#define VDO_CERT(xid) ((xid) & 0xffffffff)
> > +
> > +/*
> > + * Product VDO
> > + * -----------
> > + * <31:16> : USB Product ID
> > + * <15:0> : USB bcdDevice
> > + */
> > +#define VDO_PRODUCT(pid, bcd) (((pid) & 0xffff) << 16 | ((bcd) & 0xffff))
> > +
> > +/*
> > + * UFP VDO (PD Revision 3.0+ only)
> > + * --------
> > + * <31:29> :: UFP VDO version
> > + * <28> :: Reserved
> > + * <27:24> :: Device capability
> > + * <23:22> :: Connector type (10b == receptacle, 11b == captive plug)
> > + * <21:11> :: Reserved
> > + * <10:8> :: Vconn power (AMA only)
> > + * <7> :: Vconn required (AMA only, 0b == no, 1b == yes)
> > + * <6> :: Vbus required (AMA only, 0b == yes, 1b == no)
> > + * <5:3> :: Alternate modes
> > + * <2:0> :: USB highest speed
> > + */
> > +/* UFP VDO Version */
> > +#define UFP_VDO_VER1_2 2
> > +
> > +/* Device Capability */
> > +#define DEV_USB2_CAPABLE BIT(0)
> > +#define DEV_USB2_BILLBOARD BIT(1)
> > +#define DEV_USB3_CAPABLE BIT(2)
> > +#define DEV_USB4_CAPABLE BIT(3)
> > +
> > +/* Connector Type */
> > +#define UFP_RECEPTACLE 2
> > +#define UFP_CAPTIVE 3
> > +
> > +/* Vconn Power (AMA only, set to AMA_VCONN_NOT_REQ if Vconn is not required) */
> > +#define AMA_VCONN_PWR_1W 0
> > +#define AMA_VCONN_PWR_1W5 1
> > +#define AMA_VCONN_PWR_2W 2
> > +#define AMA_VCONN_PWR_3W 3
> > +#define AMA_VCONN_PWR_4W 4
> > +#define AMA_VCONN_PWR_5W 5
> > +#define AMA_VCONN_PWR_6W 6
> > +
> > +/* Vconn Required (AMA only) */
> > +#define AMA_VCONN_NOT_REQ 0
> > +#define AMA_VCONN_REQ 1
> > +
> > +/* Vbus Required (AMA only) */
> > +#define AMA_VBUS_REQ 0
> > +#define AMA_VBUS_NOT_REQ 1
> > +
> > +/* Alternate Modes */
> > +#define UFP_ALTMODE_NOT_SUPP 0
> > +#define UFP_ALTMODE_TBT3 BIT(0)
> > +#define UFP_ALTMODE_RECFG BIT(1)
> > +#define UFP_ALTMODE_NO_RECFG BIT(2)
> > +
> > +/* USB Highest Speed */
> > +#define UFP_USB2_ONLY 0
> > +#define UFP_USB32_GEN1 1
> > +#define UFP_USB32_4_GEN2 2
> > +#define UFP_USB4_GEN3 3
> > +
> > +#define VDO_UFP(ver, cap, conn, vcpwr, vcr, vbr, alt, spd) \
> > + (((ver) & 0x7) << 29 | ((cap) & 0xf) << 24 | ((conn) & 0x3) << 22 \
> > + | ((vcpwr) & 0x7) << 8 | (vcr) << 7 | (vbr) << 6 | ((alt) & 0x7) << 3 \
> > + | ((spd) & 0x7))
> > +
> > +/*
> > + * DFP VDO (PD Revision 3.0+ only)
> > + * --------
> > + * <31:29> :: DFP VDO version
> > + * <28:27> :: Reserved
> > + * <26:24> :: Host capability
> > + * <23:22> :: Connector type (10b == receptacle, 11b == captive plug)
> > + * <21:5> :: Reserved
> > + * <4:0> :: Port number
> > + */
> > +#define DFP_VDO_VER1_1 1
> > +#define HOST_USB2_CAPABLE BIT(0)
> > +#define HOST_USB3_CAPABLE BIT(1)
> > +#define HOST_USB4_CAPABLE BIT(2)
> > +#define DFP_RECEPTACLE 2
> > +#define DFP_CAPTIVE 3
> > +
> > +#define VDO_DFP(ver, cap, conn, pnum) \
> > + (((ver) & 0x7) << 29 | ((cap) & 0x7) << 24 | ((conn) & 0x3) << 22 \
> > + | ((pnum) & 0x1f))
> > +
> > +/*
> > + * Passive Cable VDO
> > + * ---------
> > + * <31:28> :: Cable HW version
> > + * <27:24> :: Cable FW version
> > + * <23:21> :: VDO version
> > + * <20> :: Reserved, Shall be set to zero
> > + * <19:18> :: Type-C to Type-C/Captive (10b == C, 11b == Captive)
> > + * <17> :: Reserved, Shall be set to zero
> > + * <16:13> :: cable latency (0001 == <10ns(~1m length))
> > + * <12:11> :: cable termination type (10b == Vconn not req, 01b == Vconn req)
> > + * <10:9> :: Maximum Vbus voltage (00b == 20V, 01b == 30V, 10b == 40V, 11b == 50V)
> > + * <8:7> :: Reserved, Shall be set to zero
> > + * <6:5> :: Vbus current handling capability (01b == 3A, 10b == 5A)
> > + * <4:3> :: Reserved, Shall be set to zero
> > + * <2:0> :: USB highest speed
> > + *
> > + * Active Cable VDO 1
> > + * ---------
> > + * <31:28> :: Cable HW version
> > + * <27:24> :: Cable FW version
> > + * <23:21> :: VDO version
> > + * <20> :: Reserved, Shall be set to zero
> > + * <19:18> :: Connector type (10b == C, 11b == Captive)
> > + * <17> :: Reserved, Shall be set to zero
> > + * <16:13> :: cable latency (0001 == <10ns(~1m length))
> > + * <12:11> :: cable termination type (10b == one end active, 11b == both ends active VCONN req)
> > + * <10:9> :: Maximum Vbus voltage (00b == 20V, 01b == 30V, 10b == 40V, 11b == 50V)
> > + * <8> :: SBU supported (0b == supported, 1b == not supported)
> > + * <7> :: SBU type (0b == passive, 1b == active)
> > + * <6:5> :: Vbus current handling capability (01b == 3A, 10b == 5A)
> > + * <4> :: Vbus through cable (0b == no, 1b == yes)
> > + * <3> :: SOP" controller present? (0b == no, 1b == yes)
> > + * <2:0> :: USB highest speed
> > + */
> > +/* Cable VDO Version */
> > +#define CABLE_VDO_VER1_0 0
> > +#define CABLE_VDO_VER1_3 3
> > +
> > +/* Connector Type */
> > +#define CABLE_CTYPE 2
> > +#define CABLE_CAPTIVE 3
> > +
> > +/* Cable Latency */
> > +#define CABLE_LATENCY_1M 1
> > +#define CABLE_LATENCY_2M 2
> > +#define CABLE_LATENCY_3M 3
> > +#define CABLE_LATENCY_4M 4
> > +#define CABLE_LATENCY_5M 5
> > +#define CABLE_LATENCY_6M 6
> > +#define CABLE_LATENCY_7M 7
> > +#define CABLE_LATENCY_7M_PLUS 8
> > +
> > +/* Cable Termination Type */
> > +#define PCABLE_VCONN_NOT_REQ 0
> > +#define PCABLE_VCONN_REQ 1
> > +#define ACABLE_ONE_END 2
> > +#define ACABLE_BOTH_END 3
> > +
> > +/* Maximum Vbus Voltage */
> > +#define CABLE_MAX_VBUS_20V 0
> > +#define CABLE_MAX_VBUS_30V 1
> > +#define CABLE_MAX_VBUS_40V 2
> > +#define CABLE_MAX_VBUS_50V 3
> > +
> > +/* Active Cable SBU Supported/Type */
> > +#define ACABLE_SBU_SUPP 0
> > +#define ACABLE_SBU_NOT_SUPP 1
> > +#define ACABLE_SBU_PASSIVE 0
> > +#define ACABLE_SBU_ACTIVE 1
> > +
> > +/* Vbus Current Handling Capability */
> > +#define CABLE_CURR_DEF 0
> > +#define CABLE_CURR_3A 1
> > +#define CABLE_CURR_5A 2
> > +
> > +/* USB Highest Speed */
> > +#define CABLE_USB2_ONLY 0
> > +#define CABLE_USB32_GEN1 1
> > +#define CABLE_USB32_4_GEN2 2
> > +#define CABLE_USB4_GEN3 3
> > +
> > +#define VDO_PCABLE(hw, fw, ver, conn, lat, term, vbm, cur, spd) \
> > + (((hw) & 0xf) << 28 | ((fw) & 0xf) << 24 | ((ver) & 0x7) << 21 \
> > + | ((conn) & 0x3) << 18 | ((lat) & 0xf) << 13 | ((term) & 0x3) << 11 \
> > + | ((vbm) & 0x3) << 9 | ((cur) & 0x3) << 5 | ((spd) & 0x7))
> > +#define VDO_ACABLE1(hw, fw, ver, conn, lat, term, vbm, sbu, sbut, cur, vbt, sopp, spd) \
> > + (((hw) & 0xf) << 28 | ((fw) & 0xf) << 24 | ((ver) & 0x7) << 21 \
> > + | ((conn) & 0x3) << 18 | ((lat) & 0xf) << 13 | ((term) & 0x3) << 11 \
> > + | ((vbm) & 0x3) << 9 | (sbu) << 8 | (sbut) << 7 | ((cur) & 0x3) << 5 \
> > + | (vbt) << 4 | (sopp) << 3 | ((spd) & 0x7))
> > +
> > +/*
> > + * Active Cable VDO 2
> > + * ---------
> > + * <31:24> :: Maximum operating temperature
> > + * <23:16> :: Shutdown temperature
> > + * <15> :: Reserved, Shall be set to zero
> > + * <14:12> :: U3/CLd power
> > + * <11> :: U3 to U0 transition mode (0b == direct, 1b == through U3S)
> > + * <10> :: Physical connection (0b == copper, 1b == optical)
> > + * <9> :: Active element (0b == redriver, 1b == retimer)
> > + * <8> :: USB4 supported (0b == yes, 1b == no)
> > + * <7:6> :: USB2 hub hops consumed
> > + * <5> :: USB2 supported (0b == yes, 1b == no)
> > + * <4> :: USB3.2 supported (0b == yes, 1b == no)
> > + * <3> :: USB lanes supported (0b == one lane, 1b == two lanes)
> > + * <2> :: Optically isolated active cable (0b == no, 1b == yes)
> > + * <1> :: Reserved, Shall be set to zero
> > + * <0> :: USB gen (0b == gen1, 1b == gen2+)
> > + */
> > +/* U3/CLd Power*/
> > +#define ACAB2_U3_CLD_10MW_PLUS 0
> > +#define ACAB2_U3_CLD_10MW 1
> > +#define ACAB2_U3_CLD_5MW 2
> > +#define ACAB2_U3_CLD_1MW 3
> > +#define ACAB2_U3_CLD_500UW 4
> > +#define ACAB2_U3_CLD_200UW 5
> > +#define ACAB2_U3_CLD_50UW 6
> > +
> > +/* Other Active Cable VDO 2 Fields */
> > +#define ACAB2_U3U0_DIRECT 0
> > +#define ACAB2_U3U0_U3S 1
> > +#define ACAB2_PHY_COPPER 0
> > +#define ACAB2_PHY_OPTICAL 1
> > +#define ACAB2_REDRIVER 0
> > +#define ACAB2_RETIMER 1
> > +#define ACAB2_USB4_SUPP 0
> > +#define ACAB2_USB4_NOT_SUPP 1
> > +#define ACAB2_USB2_SUPP 0
> > +#define ACAB2_USB2_NOT_SUPP 1
> > +#define ACAB2_USB32_SUPP 0
> > +#define ACAB2_USB32_NOT_SUPP 1
> > +#define ACAB2_LANES_ONE 0
> > +#define ACAB2_LANES_TWO 1
> > +#define ACAB2_OPT_ISO_NO 0
> > +#define ACAB2_OPT_ISO_YES 1
> > +#define ACAB2_GEN_1 0
> > +#define ACAB2_GEN_2_PLUS 1
> > +
> > +#define VDO_ACABLE2(mtemp, stemp, u3p, trans, phy, ele, u4, hops, u2, u32, lane, iso, gen) \
> > + (((mtemp) & 0xff) << 24 | ((stemp) & 0xff) << 16 | ((u3p) & 0x7) << 12 \
> > + | (trans) << 11 | (phy) << 10 | (ele) << 9 | (u4) << 8 \
> > + | ((hops) & 0x3) << 6 | (u2) << 5 | (u32) << 4 | (lane) << 3 \
> > + | (iso) << 2 | (gen))
> > +
> > +/*
> > + * VPD VDO
> > + * ---------
> > + * <31:28> :: HW version
> > + * <27:24> :: FW version
> > + * <23:21> :: VDO version
> > + * <20:17> :: Reserved, Shall be set to zero
> > + * <16:15> :: Maximum Vbus voltage (00b == 20V, 01b == 30V, 10b == 40V, 11b == 50V)
> > + * <14> :: Charge through current support (0b == 3A, 1b == 5A)
> > + * <13> :: Reserved, Shall be set to zero
> > + * <12:7> :: Vbus impedance
> > + * <6:1> :: Ground impedance
> > + * <0> :: Charge through support (0b == no, 1b == yes)
> > + */
> > +#define VPD_VDO_VER1_0 0
> > +#define VPD_MAX_VBUS_20V 0
> > +#define VPD_MAX_VBUS_30V 1
> > +#define VPD_MAX_VBUS_40V 2
> > +#define VPD_MAX_VBUS_50V 3
> > +#define VPDCT_CURR_3A 0
> > +#define VPDCT_CURR_5A 1
> > +#define VPDCT_NOT_SUPP 0
> > +#define VPDCT_SUPP 1
> > +
> > +#define VDO_VPD(hw, fw, ver, vbm, curr, vbi, gi, ct) \
> > + (((hw) & 0xf) << 28 | ((fw) & 0xf) << 24 | ((ver) & 0x7) << 21 \
> > + | ((vbm) & 0x3) << 15 | (curr) << 14 | ((vbi) & 0x3f) << 7 \
> > + | ((gi) & 0x3f) << 1 | (ct))
> > +
> > +#endif /* __DT_POWER_DELIVERY_H */
> > --
> > 2.30.0.365.g02bc693789-goog
> >
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