| Message ID | 20210107091924.1569575-3-steen.hegelund@microchip.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Adding the Sparx5 Serdes driver | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Guessed tree name to be net-next |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 2 of 2 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 194 this patch: 194 |
| netdev/kdoc | success | Errors and warnings before: 1 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | warning | WARNING: added, moved or deleted file(s), does MAINTAINERS need updating? |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 194 this patch: 194 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
On 07/01/2021 10:19:22+0100, Steen Hegelund wrote: > Provide a new ethernet phy configuration structure, that > allow PHYs used for ethernet to be configured with > speed, media type and clock information. > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> > Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > --- > include/linux/phy/phy-ethernet-serdes.h | 30 +++++++++++++++++++++++++ > include/linux/phy/phy.h | 4 ++++ > 2 files changed, 34 insertions(+) > create mode 100644 include/linux/phy/phy-ethernet-serdes.h > > diff --git a/include/linux/phy/phy-ethernet-serdes.h b/include/linux/phy/phy-ethernet-serdes.h > new file mode 100644 > index 000000000000..d2462fadf179 > --- /dev/null > +++ b/include/linux/phy/phy-ethernet-serdes.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > +/* > + * Microchip Sparx5 Ethernet SerDes driver > + * > + * Copyright (c) 2020 Microschip Inc > + */ > +#ifndef __PHY_ETHERNET_SERDES_H_ > +#define __PHY_ETHERNET_SERDES_H_ > + > +#include <linux/types.h> > + > +enum ethernet_media_type { > + ETH_MEDIA_DEFAULT, > + ETH_MEDIA_SR, > + ETH_MEDIA_DAC, > +}; > + > +/** > + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This structure is used > + * to represent the configuration state of a Ethernet Serdes PHY. > + * @speed: Speed of the serdes interface in Mbps > + * @media_type: Specifies which media the serdes will be using > + */ > +struct phy_configure_opts_eth_serdes { > + u32 speed; > + enum ethernet_media_type media_type; > +}; > + > +#endif > + > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h > index e435bdb0bab3..78ecb375cede 100644 > --- a/include/linux/phy/phy.h > +++ b/include/linux/phy/phy.h > @@ -18,6 +18,7 @@ > > #include <linux/phy/phy-dp.h> > #include <linux/phy/phy-mipi-dphy.h> > +#include <linux/phy/phy-ethernet-serdes.h> > > struct phy; > > @@ -49,11 +50,14 @@ enum phy_mode { > * > * @mipi_dphy: Configuration set applicable for phys supporting > * the MIPI_DPHY phy mode. > + * @eth_serdes: Configuration set applicable for phys supporting > + * the ethernet serdes. > * @dp: Configuration set applicable for phys supporting > * the DisplayPort protocol. > */ > union phy_configure_opts { > struct phy_configure_opts_mipi_dphy mipi_dphy; > + struct phy_configure_opts_eth_serdes eth_serdes; > struct phy_configure_opts_dp dp; > }; > > -- > 2.29.2 >
Hi, On 07/01/21 2:49 pm, Steen Hegelund wrote: > Provide a new ethernet phy configuration structure, that > allow PHYs used for ethernet to be configured with > speed, media type and clock information. > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > --- > include/linux/phy/phy-ethernet-serdes.h | 30 +++++++++++++++++++++++++ > include/linux/phy/phy.h | 4 ++++ > 2 files changed, 34 insertions(+) > create mode 100644 include/linux/phy/phy-ethernet-serdes.h > > diff --git a/include/linux/phy/phy-ethernet-serdes.h b/include/linux/phy/phy-ethernet-serdes.h > new file mode 100644 > index 000000000000..d2462fadf179 > --- /dev/null > +++ b/include/linux/phy/phy-ethernet-serdes.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > +/* > + * Microchip Sparx5 Ethernet SerDes driver > + * > + * Copyright (c) 2020 Microschip Inc > + */ > +#ifndef __PHY_ETHERNET_SERDES_H_ > +#define __PHY_ETHERNET_SERDES_H_ > + > +#include <linux/types.h> > + > +enum ethernet_media_type { > + ETH_MEDIA_DEFAULT, > + ETH_MEDIA_SR, > + ETH_MEDIA_DAC, > +}; > + > +/** > + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This structure is used > + * to represent the configuration state of a Ethernet Serdes PHY. > + * @speed: Speed of the serdes interface in Mbps > + * @media_type: Specifies which media the serdes will be using > + */ > +struct phy_configure_opts_eth_serdes { > + u32 speed; > + enum ethernet_media_type media_type; > +}; Is media type going to be determined dynamically by the Ethernet controller. If it's not determined dynamically, it shouldn't be in PHY ops but rather as a DT parameter. phy_configure_opts is mostly used with things like DP where the controller probes the configurations supported by SERDES using the configure and validate ops. I don't think for Ethernet it is required. Thanks Kishon > + > +#endif > + > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h > index e435bdb0bab3..78ecb375cede 100644 > --- a/include/linux/phy/phy.h > +++ b/include/linux/phy/phy.h > @@ -18,6 +18,7 @@ > > #include <linux/phy/phy-dp.h> > #include <linux/phy/phy-mipi-dphy.h> > +#include <linux/phy/phy-ethernet-serdes.h> > > struct phy; > > @@ -49,11 +50,14 @@ enum phy_mode { > * > * @mipi_dphy: Configuration set applicable for phys supporting > * the MIPI_DPHY phy mode. > + * @eth_serdes: Configuration set applicable for phys supporting > + * the ethernet serdes. > * @dp: Configuration set applicable for phys supporting > * the DisplayPort protocol. > */ > union phy_configure_opts { > struct phy_configure_opts_mipi_dphy mipi_dphy; > + struct phy_configure_opts_eth_serdes eth_serdes; > struct phy_configure_opts_dp dp; > }; > >
Hi Kishon, On Fri, 2021-01-15 at 14:14 +0530, Kishon Vijay Abraham I wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you > know the content is safe > > Hi, > > On 07/01/21 2:49 pm, Steen Hegelund wrote: > > Provide a new ethernet phy configuration structure, that > > allow PHYs used for ethernet to be configured with > > speed, media type and clock information. > > > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > > Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> > > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > > --- > > include/linux/phy/phy-ethernet-serdes.h | 30 > > +++++++++++++++++++++++++ > > include/linux/phy/phy.h | 4 ++++ > > 2 files changed, 34 insertions(+) > > create mode 100644 include/linux/phy/phy-ethernet-serdes.h > > > > diff --git a/include/linux/phy/phy-ethernet-serdes.h > > b/include/linux/phy/phy-ethernet-serdes.h > > new file mode 100644 > > index 000000000000..d2462fadf179 > > --- /dev/null > > +++ b/include/linux/phy/phy-ethernet-serdes.h > > @@ -0,0 +1,30 @@ > > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > > +/* > > + * Microchip Sparx5 Ethernet SerDes driver > > + * > > + * Copyright (c) 2020 Microschip Inc > > + */ > > +#ifndef __PHY_ETHERNET_SERDES_H_ > > +#define __PHY_ETHERNET_SERDES_H_ > > + > > +#include <linux/types.h> > > + > > +enum ethernet_media_type { > > + ETH_MEDIA_DEFAULT, > > + ETH_MEDIA_SR, > > + ETH_MEDIA_DAC, > > +}; > > + > > +/** > > + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This > > structure is used > > + * to represent the configuration state of a Ethernet Serdes PHY. > > + * @speed: Speed of the serdes interface in Mbps > > + * @media_type: Specifies which media the serdes will be using > > + */ > > +struct phy_configure_opts_eth_serdes { > > + u32 speed; > > + enum ethernet_media_type media_type; > > +}; > > Is media type going to be determined dynamically by the Ethernet > controller. If it's not determined dynamically, it shouldn't be in > PHY > ops but rather as a DT parameter. Yes the media type is dynamic, as it will be determined by the feedback from the attached SFP or DAC attached, which can be changed at any time, so it is not static in a way that allows it to be part of the DT. > > phy_configure_opts is mostly used with things like DP where the > controller probes the configurations supported by SERDES using the > configure and validate ops. I don't think for Ethernet it is > required. From what you explained I think the situation is very similar with the Ethernet SerDes in that the actual media (and speed) is not known in advance, but will be obtained "out-of-band" by the client and may change at any point in time when the user changes the physical setup (e.g cables). > > Thanks > Kishon > > > + > > +#endif > > + > > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h > > index e435bdb0bab3..78ecb375cede 100644 > > --- a/include/linux/phy/phy.h > > +++ b/include/linux/phy/phy.h > > @@ -18,6 +18,7 @@ > > > > #include <linux/phy/phy-dp.h> > > #include <linux/phy/phy-mipi-dphy.h> > > +#include <linux/phy/phy-ethernet-serdes.h> > > > > struct phy; > > > > @@ -49,11 +50,14 @@ enum phy_mode { > > * > > * @mipi_dphy: Configuration set applicable for phys > > supporting > > * the MIPI_DPHY phy mode. > > + * @eth_serdes: Configuration set applicable for phys supporting > > + * the ethernet serdes. > > * @dp: Configuration set applicable for phys > > supporting > > * the DisplayPort protocol. > > */ > > union phy_configure_opts { > > struct phy_configure_opts_mipi_dphy mipi_dphy; > > + struct phy_configure_opts_eth_serdes eth_serdes; > > struct phy_configure_opts_dp dp; > > }; > > > > BR Steen
Hi, On 07/01/21 2:49 pm, Steen Hegelund wrote: > Provide a new ethernet phy configuration structure, that > allow PHYs used for ethernet to be configured with > speed, media type and clock information. > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > --- > include/linux/phy/phy-ethernet-serdes.h | 30 +++++++++++++++++++++++++ > include/linux/phy/phy.h | 4 ++++ > 2 files changed, 34 insertions(+) > create mode 100644 include/linux/phy/phy-ethernet-serdes.h > > diff --git a/include/linux/phy/phy-ethernet-serdes.h b/include/linux/phy/phy-ethernet-serdes.h > new file mode 100644 > index 000000000000..d2462fadf179 > --- /dev/null > +++ b/include/linux/phy/phy-ethernet-serdes.h > @@ -0,0 +1,30 @@ > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > +/* > + * Microchip Sparx5 Ethernet SerDes driver > + * > + * Copyright (c) 2020 Microschip Inc > + */ > +#ifndef __PHY_ETHERNET_SERDES_H_ > +#define __PHY_ETHERNET_SERDES_H_ > + > +#include <linux/types.h> > + > +enum ethernet_media_type { > + ETH_MEDIA_DEFAULT, > + ETH_MEDIA_SR, > + ETH_MEDIA_DAC, > +}; I'm not familiar with Ethernet. Are these generic media types? what does SR or DAC refer to? Are there other media types? What is the out-of-band mechanism by which the controller gets the media type? Why was this not required for other existing Ethernet SERDES? Are you aware of any other vendors who might require this? Thanks Kishon > + > +/** > + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This structure is used > + * to represent the configuration state of a Ethernet Serdes PHY. > + * @speed: Speed of the serdes interface in Mbps > + * @media_type: Specifies which media the serdes will be using > + */ > +struct phy_configure_opts_eth_serdes { > + u32 speed; > + enum ethernet_media_type media_type; > +}; > + > +#endif > + > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h > index e435bdb0bab3..78ecb375cede 100644 > --- a/include/linux/phy/phy.h > +++ b/include/linux/phy/phy.h > @@ -18,6 +18,7 @@ > > #include <linux/phy/phy-dp.h> > #include <linux/phy/phy-mipi-dphy.h> > +#include <linux/phy/phy-ethernet-serdes.h> > > struct phy; > > @@ -49,11 +50,14 @@ enum phy_mode { > * > * @mipi_dphy: Configuration set applicable for phys supporting > * the MIPI_DPHY phy mode. > + * @eth_serdes: Configuration set applicable for phys supporting > + * the ethernet serdes. > * @dp: Configuration set applicable for phys supporting > * the DisplayPort protocol. > */ > union phy_configure_opts { > struct phy_configure_opts_mipi_dphy mipi_dphy; > + struct phy_configure_opts_eth_serdes eth_serdes; > struct phy_configure_opts_dp dp; > }; > >
Hi Kishon, On Fri, 2021-01-15 at 21:22 +0530, Kishon Vijay Abraham I wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you > know the content is safe > > Hi, > > On 07/01/21 2:49 pm, Steen Hegelund wrote: > > Provide a new ethernet phy configuration structure, that > > allow PHYs used for ethernet to be configured with > > speed, media type and clock information. > > > > Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> > > Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> > > Reviewed-by: Andrew Lunn <andrew@lunn.ch> > > --- > > include/linux/phy/phy-ethernet-serdes.h | 30 > > +++++++++++++++++++++++++ > > include/linux/phy/phy.h | 4 ++++ > > 2 files changed, 34 insertions(+) > > create mode 100644 include/linux/phy/phy-ethernet-serdes.h > > > > diff --git a/include/linux/phy/phy-ethernet-serdes.h > > b/include/linux/phy/phy-ethernet-serdes.h > > new file mode 100644 > > index 000000000000..d2462fadf179 > > --- /dev/null > > +++ b/include/linux/phy/phy-ethernet-serdes.h > > @@ -0,0 +1,30 @@ > > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ > > +/* > > + * Microchip Sparx5 Ethernet SerDes driver > > + * > > + * Copyright (c) 2020 Microschip Inc > > + */ > > +#ifndef __PHY_ETHERNET_SERDES_H_ > > +#define __PHY_ETHERNET_SERDES_H_ > > + > > +#include <linux/types.h> > > + > > +enum ethernet_media_type { > > + ETH_MEDIA_DEFAULT, > > + ETH_MEDIA_SR, > > + ETH_MEDIA_DAC, > > +}; > > I'm not familiar with Ethernet. Are these generic media types? what > does > SR or DAC refer to? The SR stands for Short Reach and is a fiber type connection used by SFPs. There also other "reach" variants. DAC stands for Direct Attach Copper and is a type of cable that plugs into an SFP cage and provides information back to the user via its EEPROM regarding supported speed and capabilities in general. These typically supports speed of 5G or more. The SFP/Phylink is the "out-of-band" method that provides the type of connection: speed and media type that allows the client to adapt the SerDes configuration to the type of media selected by the user. > Are there other media types? What is the out-of-band > mechanism by which the controller gets the media type? Why was this > not > required for other existing Ethernet SERDES? This is probably a matter of the interface speed are now getting higher and the amount of configuration needed for the SerDes have increased, at the same time as this is not being a static setup, because the user an plug and unplug media to the SFP cage. > Are you aware of any other > vendors who might require this? I suspect that going forward it will become more widespread, at least we have more chips in the pipeline that need this SerDes for high speed connectivity. > > Thanks > Kishon > > + > > +/** > > + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This > > structure is used > > + * to represent the configuration state of a Ethernet Serdes PHY. > > + * @speed: Speed of the serdes interface in Mbps > > + * @media_type: Specifies which media the serdes will be using > > + */ > > +struct phy_configure_opts_eth_serdes { > > + u32 speed; > > + enum ethernet_media_type media_type; > > +}; > > + > > +#endif > > + > > diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h > > index e435bdb0bab3..78ecb375cede 100644 > > --- a/include/linux/phy/phy.h > > +++ b/include/linux/phy/phy.h > > @@ -18,6 +18,7 @@ > > > > #include <linux/phy/phy-dp.h> > > #include <linux/phy/phy-mipi-dphy.h> > > +#include <linux/phy/phy-ethernet-serdes.h> > > > > struct phy; > > > > @@ -49,11 +50,14 @@ enum phy_mode { > > * > > * @mipi_dphy: Configuration set applicable for phys > > supporting > > * the MIPI_DPHY phy mode. > > + * @eth_serdes: Configuration set applicable for phys supporting > > + * the ethernet serdes. > > * @dp: Configuration set applicable for phys > > supporting > > * the DisplayPort protocol. > > */ > > union phy_configure_opts { > > struct phy_configure_opts_mipi_dphy mipi_dphy; > > + struct phy_configure_opts_eth_serdes eth_serdes; > > struct phy_configure_opts_dp dp; > > }; > > > > Best Regards Steen
Hi Kishon and Vinod, On Fri, 2021-01-15 at 21:22 +0530, Kishon Vijay Abraham I wrote: > > > > I was just wanted to know if there are any outstanding items that you would like me to handle, or you think that the driver is acceptable as it is now? BR Steen
Hi Steen, On 15/01/21 9:44 pm, Steen Hegelund wrote: > Hi Kishon, > > On Fri, 2021-01-15 at 21:22 +0530, Kishon Vijay Abraham I wrote: >> EXTERNAL EMAIL: Do not click links or open attachments unless you >> know the content is safe >> >> Hi, >> >> On 07/01/21 2:49 pm, Steen Hegelund wrote: >>> Provide a new ethernet phy configuration structure, that >>> allow PHYs used for ethernet to be configured with >>> speed, media type and clock information. >>> >>> Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com> >>> Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com> >>> Reviewed-by: Andrew Lunn <andrew@lunn.ch> >>> --- >>> include/linux/phy/phy-ethernet-serdes.h | 30 >>> +++++++++++++++++++++++++ >>> include/linux/phy/phy.h | 4 ++++ >>> 2 files changed, 34 insertions(+) >>> create mode 100644 include/linux/phy/phy-ethernet-serdes.h >>> >>> diff --git a/include/linux/phy/phy-ethernet-serdes.h >>> b/include/linux/phy/phy-ethernet-serdes.h >>> new file mode 100644 >>> index 000000000000..d2462fadf179 >>> --- /dev/null >>> +++ b/include/linux/phy/phy-ethernet-serdes.h >>> @@ -0,0 +1,30 @@ >>> +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ >>> +/* >>> + * Microchip Sparx5 Ethernet SerDes driver >>> + * >>> + * Copyright (c) 2020 Microschip Inc >>> + */ >>> +#ifndef __PHY_ETHERNET_SERDES_H_ >>> +#define __PHY_ETHERNET_SERDES_H_ >>> + >>> +#include <linux/types.h> >>> + >>> +enum ethernet_media_type { >>> + ETH_MEDIA_DEFAULT, >>> + ETH_MEDIA_SR, >>> + ETH_MEDIA_DAC, >>> +}; >> >> I'm not familiar with Ethernet. Are these generic media types? what >> does >> SR or DAC refer to? > > The SR stands for Short Reach and is a fiber type connection used by > SFPs. There also other "reach" variants. > > DAC stands for Direct Attach Copper and is a type of cable that plugs > into an SFP cage and provides information back to the user via its > EEPROM regarding supported speed and capabilities in general. These > typically supports speed of 5G or more. > > The SFP/Phylink is the "out-of-band" method that provides the type of > connection: speed and media type that allows the client to adapt the > SerDes configuration to the type of media selected by the user. > >> Are there other media types? What is the out-of-band >> mechanism by which the controller gets the media type? Why was this >> not >> required for other existing Ethernet SERDES? > > This is probably a matter of the interface speed are now getting higher > and the amount of configuration needed for the SerDes have increased, > at the same time as this is not being a static setup, because the user > an plug and unplug media to the SFP cage. > >> Are you aware of any other >> vendors who might require this? > > I suspect that going forward it will become more widespread, at least > we have more chips in the pipeline that need this SerDes for high speed > connectivity. For this case I would recommend to add new API, something like phy_set_media(). Configure() and Validate() is more for probing something that is supported by SERDES and changing the parameters. But in this case, I'd think the media type is determined by the cable that is connected and cannot be changed. Thanks Kishon
Hi Kishon, On Wed, 2021-01-27 at 18:04 +0530, Kishon Vijay Abraham I wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > ... > > > > > > I'm not familiar with Ethernet. Are these generic media types? what > > > does > > > SR or DAC refer to? > > > > The SR stands for Short Reach and is a fiber type connection used by > > SFPs. There also other "reach" variants. > > > > DAC stands for Direct Attach Copper and is a type of cable that plugs > > into an SFP cage and provides information back to the user via its > > EEPROM regarding supported speed and capabilities in general. These > > typically supports speed of 5G or more. > > > > The SFP/Phylink is the "out-of-band" method that provides the type of > > connection: speed and media type that allows the client to adapt the > > SerDes configuration to the type of media selected by the user. > > > > > Are there other media types? What is the out-of-band > > > mechanism by which the controller gets the media type? Why was this > > > not > > > required for other existing Ethernet SERDES? > > > > This is probably a matter of the interface speed are now getting higher > > and the amount of configuration needed for the SerDes have increased, > > at the same time as this is not being a static setup, because the user > > an plug and unplug media to the SFP cage. > > > > > Are you aware of any other > > > vendors who might require this? > > > > I suspect that going forward it will become more widespread, at least > > we have more chips in the pipeline that need this SerDes for high speed > > connectivity. > > For this case I would recommend to add new API, something like > phy_set_media(). Configure() and Validate() is more for probing > something that is supported by SERDES and changing the parameters. But > in this case, I'd think the media type is determined by the cable that > is connected and cannot be changed. > > Thanks > Kishon I assume that you would like a separate interface for the speed information as well? Thanks for your comments. BR Steen
diff --git a/include/linux/phy/phy-ethernet-serdes.h b/include/linux/phy/phy-ethernet-serdes.h new file mode 100644 index 000000000000..d2462fadf179 --- /dev/null +++ b/include/linux/phy/phy-ethernet-serdes.h @@ -0,0 +1,30 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */ +/* + * Microchip Sparx5 Ethernet SerDes driver + * + * Copyright (c) 2020 Microschip Inc + */ +#ifndef __PHY_ETHERNET_SERDES_H_ +#define __PHY_ETHERNET_SERDES_H_ + +#include <linux/types.h> + +enum ethernet_media_type { + ETH_MEDIA_DEFAULT, + ETH_MEDIA_SR, + ETH_MEDIA_DAC, +}; + +/** + * struct phy_configure_opts_eth_serdes - Ethernet SerDes This structure is used + * to represent the configuration state of a Ethernet Serdes PHY. + * @speed: Speed of the serdes interface in Mbps + * @media_type: Specifies which media the serdes will be using + */ +struct phy_configure_opts_eth_serdes { + u32 speed; + enum ethernet_media_type media_type; +}; + +#endif + diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index e435bdb0bab3..78ecb375cede 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -18,6 +18,7 @@ #include <linux/phy/phy-dp.h> #include <linux/phy/phy-mipi-dphy.h> +#include <linux/phy/phy-ethernet-serdes.h> struct phy; @@ -49,11 +50,14 @@ enum phy_mode { * * @mipi_dphy: Configuration set applicable for phys supporting * the MIPI_DPHY phy mode. + * @eth_serdes: Configuration set applicable for phys supporting + * the ethernet serdes. * @dp: Configuration set applicable for phys supporting * the DisplayPort protocol. */ union phy_configure_opts { struct phy_configure_opts_mipi_dphy mipi_dphy; + struct phy_configure_opts_eth_serdes eth_serdes; struct phy_configure_opts_dp dp; };