* Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
[not found] <CGME20200325155438uscas1p19c02d00cfd32dac911df3df7a5390eba@uscas1p1.samsung.com>
@ 2020-03-25 15:54 ` Geoffroy Letourneur
2020-03-26 7:33 ` Matthias May
0 siblings, 1 reply; 9+ messages in thread
From: Geoffroy Letourneur @ 2020-03-25 15:54 UTC (permalink / raw)
To: linux-wireless, linuxwifi; +Cc: Gilles Mazars, Martin Bourreau
Hello,
I am working on Jetson Nano boards. I would like to connect two boards together with AX200 wifi module.
One is configured in hostspot mode and the other one is the client connected to the hostspot.
Kernel Version: 4.9.140-tegra aarch64
Ubuntu distribution: Bionic
The idea is to used hostapd and wpasupplicant daemon to set up the module and connect the card together.
Wpa_supplicant and hostapd version V2.6.
I install all the drivers from intel and follow this tuto. https://wifi.hypergeek.net/you-too-can-have-a-sub-200-11ax-client/
So I can see the wlan phy with ifconfig command line.
When I try to launch hostapd in ax mode with your module I have the following mistake.
ACS: Possibly channel configuration is invalid, please report this along with your config file. ACS: Failed to start wlan0: AP-DISABLED hostapd_free_hapd_data: Interface wlan0 wasn't started
Could you help to set up correctly hostapd ?
Best Regards
--
Geoffroy LETOURNEUR
Embedded Software Engineer,
SSIC, Paris
Email: g.letourneur@samsung.com<mailto:g.letourneur@samsung.com>
Tel: +33 6 45 14 24 32
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-25 15:54 ` Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano Geoffroy Letourneur
@ 2020-03-26 7:33 ` Matthias May
2020-03-26 8:19 ` Geoffroy Letourneur
0 siblings, 1 reply; 9+ messages in thread
From: Matthias May @ 2020-03-26 7:33 UTC (permalink / raw)
To: Geoffroy Letourneur, linux-wireless, linuxwifi
Cc: Gilles Mazars, Martin Bourreau
On 25/03/2020 16:54, Geoffroy Letourneur wrote:
>
> Hello,
>
> I am working on Jetson Nano boards. I would like to connect two boards together with AX200 wifi module.
> One is configured in hostspot mode and the other one is the client connected to the hostspot.
>
> Kernel Version: 4.9.140-tegra aarch64
> Ubuntu distribution: Bionic
> The idea is to used hostapd and wpasupplicant daemon to set up the module and connect the card together.
> Wpa_supplicant and hostapd version V2.6.
>
> I install all the drivers from intel and follow this tuto. https://wifi.hypergeek.net/you-too-can-have-a-sub-200-11ax-client/
> So I can see the wlan phy with ifconfig command line.
> When I try to launch hostapd in ax mode with your module I have the following mistake.
> ACS: Possibly channel configuration is invalid, please report this along with your config file. ACS: Failed to start wlan0: AP-DISABLED hostapd_free_hapd_data: Interface wlan0 wasn't started
>
> Could you help to set up correctly hostapd ?
>
> Best Regards
>
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
>
> Email: g.letourneur@samsung.com<mailto:g.letourneur@samsung.com>
> Tel: +33 6 45 14 24 32
>
>
>
Hi
As far as i know the AX200 is not intended/can not be used as AP.
If you type "iw list" you should get a list of the capabilities of your
card.
On an ath9k based card this looks something like this:
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO
} <= 1, #{ IBSS } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match, radar detect
widths: { 20 MHz (no HT), 20 MHz, 40 MHz }
BR
Matthias
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 7:33 ` Matthias May
@ 2020-03-26 8:19 ` Geoffroy Letourneur
2020-03-26 8:24 ` Johannes Berg
0 siblings, 1 reply; 9+ messages in thread
From: Geoffroy Letourneur @ 2020-03-26 8:19 UTC (permalink / raw)
To: Matthias May, linux-wireless, linuxwifi; +Cc: Gilles Mazars, Martin Bourreau
[-- Attachment #1: Type: text/plain, Size: 2800 bytes --]
Hello Matthias,
The AX200 module seems to support AP mode it works with 2.4GHz Wifi 802.11n mode, I tested it. But maybe it could not support this mode in 802.11ax.
Please find in attach file the log of the iw list command launch on the Jetson Nano.
Best regards.
--
Geoffroy LETOURNEUR
Embedded Software Engineer,
SSIC, Paris
Email: g.letourneur@samsung.com
Tel: +33 6 45 14 24 32
Le 26/03/2020 08:34, « Matthias May » <matthias.may@neratec.com> a écrit :
On 25/03/2020 16:54, Geoffroy Letourneur wrote:
>
> Hello,
>
> I am working on Jetson Nano boards. I would like to connect two boards together with AX200 wifi module.
> One is configured in hostspot mode and the other one is the client connected to the hostspot.
>
> Kernel Version: 4.9.140-tegra aarch64
> Ubuntu distribution: Bionic
> The idea is to used hostapd and wpasupplicant daemon to set up the module and connect the card together.
> Wpa_supplicant and hostapd version V2.6.
>
> I install all the drivers from intel and follow this tuto. https://urldefense.proofpoint.com/v2/url?u=https-3A__protect2.fireeye.com_url-3Fk-3D818d9bd4-2Ddc13354e-2D818c109b-2D0cc47a336fae-2Dd505b4921db39609-26u-3Dhttps-3A__wifi.hypergeek.net_you-2Dtoo-2Dcan-2Dhave-2Da-2Dsub-2D200-2D11ax-2Dclient_&d=DwICaQ&c=JfeWlBa6VbDyTXraMENjy_b_0yKWuqQ4qY-FPhxK4x8w-TfgRBDyeV4hVQQBEgL2&r=rgEswbwy1XbFnKdFc35QbMxZq-CcuHl8LLp2yHVN_CY&m=ybGhzUwNBdQ0dIWErSyzhVMn9Bj6gWQTE7Kl5AVPh2c&s=NC4PcvfCUL4dzOp4Moau7XGeAA3-zsvlZrontDHzeE0&e=
> So I can see the wlan phy with ifconfig command line.
> When I try to launch hostapd in ax mode with your module I have the following mistake.
> ACS: Possibly channel configuration is invalid, please report this along with your config file. ACS: Failed to start wlan0: AP-DISABLED hostapd_free_hapd_data: Interface wlan0 wasn't started
>
> Could you help to set up correctly hostapd ?
>
> Best Regards
>
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
>
> Email: g.letourneur@samsung.com<mailto:g.letourneur@samsung.com>
> Tel: +33 6 45 14 24 32
>
>
>
Hi
As far as i know the AX200 is not intended/can not be used as AP.
If you type "iw list" you should get a list of the capabilities of your
card.
On an ath9k based card this looks something like this:
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO
} <= 1, #{ IBSS } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match, radar detect
widths: { 20 MHz (no HT), 20 MHz, 40 MHz }
BR
Matthias
[-- Attachment #2: iwlist-jetson.log --]
[-- Type: application/octet-stream, Size: 7908 bytes --]
Wiphy phy0
max # scan SSIDs: 20
max scan IEs length: 365 bytes
max # sched scan SSIDs: 20
max # match sets: 11
max # scan plans: 2
max scan plan interval: 65535
max scan plan iterations: 254
Retry short limit: 7
Retry long limit: 4
Coverage class: 0 (up to 0m)
Device supports RSN-IBSS.
Device supports AP-side u-APSD.
Device supports T-DLS.
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP-128 (00-0f-ac:4)
* GCMP-128 (00-0f-ac:8)
* GCMP-256 (00-0f-ac:9)
* CMAC (00-0f-ac:6)
* GMAC-128 (00-0f-ac:11)
* GMAC-256 (00-0f-ac:12)
Available Antennas: TX 0 RX 0
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* monitor
* P2P-client
* P2P-GO
* P2P-device
* NAN
Band 1:
Capabilities: 0x19ef
RX LDPC
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 4 usec (0x05)
HT Max RX data rate: 300 Mbps
HT TX/RX MCS rate indexes supported: 0-15
Bitrates (non-HT):
* 1.0 Mbps
* 2.0 Mbps (short preamble supported)
* 5.5 Mbps (short preamble supported)
* 11.0 Mbps (short preamble supported)
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 2412 MHz [1] (22.0 dBm)
* 2417 MHz [2] (22.0 dBm)
* 2422 MHz [3] (22.0 dBm)
* 2427 MHz [4] (22.0 dBm)
* 2432 MHz [5] (22.0 dBm)
* 2437 MHz [6] (22.0 dBm)
* 2442 MHz [7] (22.0 dBm)
* 2447 MHz [8] (22.0 dBm)
* 2452 MHz [9] (22.0 dBm)
* 2457 MHz [10] (22.0 dBm)
* 2462 MHz [11] (22.0 dBm)
* 2467 MHz [12] (22.0 dBm)
* 2472 MHz [13] (22.0 dBm)
* 2484 MHz [14] (disabled)
Band 2:
Capabilities: 0x19ef
RX LDPC
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 7935 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 4 usec (0x05)
HT Max RX data rate: 300 Mbps
HT TX/RX MCS rate indexes supported: 0-15
VHT Capabilities (0x039071f6):
Max MPDU length: 11454
Supported Channel Width: 160 MHz
RX LDPC
short GI (80 MHz)
short GI (160/80+80 MHz)
TX STBC
SU Beamformee
MU Beamformee
VHT RX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT RX highest supported: 0 Mbps
VHT TX MCS set:
1 streams: MCS 0-9
2 streams: MCS 0-9
3 streams: not supported
4 streams: not supported
5 streams: not supported
6 streams: not supported
7 streams: not supported
8 streams: not supported
VHT TX highest supported: 0 Mbps
Bitrates (non-HT):
* 6.0 Mbps
* 9.0 Mbps
* 12.0 Mbps
* 18.0 Mbps
* 24.0 Mbps
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
Frequencies:
* 5180 MHz [36] (22.0 dBm) (no IR)
* 5200 MHz [40] (22.0 dBm) (no IR)
* 5220 MHz [44] (22.0 dBm) (no IR)
* 5240 MHz [48] (22.0 dBm) (no IR)
* 5260 MHz [52] (22.0 dBm) (no IR, radar detection)
* 5280 MHz [56] (22.0 dBm) (no IR, radar detection)
* 5300 MHz [60] (22.0 dBm) (no IR, radar detection)
* 5320 MHz [64] (22.0 dBm) (no IR, radar detection)
* 5340 MHz [68] (disabled)
* 5360 MHz [72] (disabled)
* 5380 MHz [76] (disabled)
* 5400 MHz [80] (disabled)
* 5420 MHz [84] (disabled)
* 5440 MHz [88] (disabled)
* 5460 MHz [92] (disabled)
* 5480 MHz [96] (disabled)
* 5500 MHz [100] (22.0 dBm) (no IR, radar detection)
* 5520 MHz [104] (22.0 dBm) (no IR, radar detection)
* 5540 MHz [108] (22.0 dBm) (no IR, radar detection)
* 5560 MHz [112] (22.0 dBm) (no IR, radar detection)
* 5580 MHz [116] (22.0 dBm) (no IR, radar detection)
* 5600 MHz [120] (22.0 dBm) (no IR, radar detection)
* 5620 MHz [124] (22.0 dBm) (no IR, radar detection)
* 5640 MHz [128] (22.0 dBm) (no IR, radar detection)
* 5660 MHz [132] (22.0 dBm) (no IR, radar detection)
* 5680 MHz [136] (22.0 dBm) (no IR, radar detection)
* 5700 MHz [140] (22.0 dBm) (no IR, radar detection)
* 5720 MHz [144] (22.0 dBm) (no IR, radar detection)
* 5745 MHz [149] (22.0 dBm)
* 5765 MHz [153] (22.0 dBm)
* 5785 MHz [157] (22.0 dBm)
* 5805 MHz [161] (22.0 dBm)
* 5825 MHz [165] (22.0 dBm)
* 5845 MHz [169] (disabled)
* 5865 MHz [173] (disabled)
* 5885 MHz [177] (disabled)
* 5905 MHz [181] (disabled)
Supported commands:
* new_interface
* set_interface
* new_key
* start_ap
* new_station
* set_bss
* authenticate
* associate
* deauthenticate
* disassociate
* join_ibss
* remain_on_channel
* set_tx_bitrate_mask
* frame
* frame_wait_cancel
* set_wiphy_netns
* set_channel
* set_wds_peer
* tdls_mgmt
* tdls_oper
* start_sched_scan
* probe_client
* set_noack_map
* register_beacons
* start_p2p_device
* set_mcast_rate
* testmode
* connect
* disconnect
* channel_switch
* set_qos_map
* add_tx_ts
* set_multicast_to_unicast
Supported TX frame types:
* IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
* P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
Supported RX frame types:
* IBSS: 0x40 0xb0 0xc0 0xd0
* managed: 0x40 0xd0
* AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* mesh point: 0xb0 0xc0 0xd0
* P2P-client: 0x40 0xd0
* P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* P2P-device: 0x40 0xd0
WoWLAN support:
* wake up on disconnect
* wake up on magic packet
* wake up on pattern match, up to 20 patterns of 16-128 bytes,
maximum packet offset 0 bytes
* can do GTK rekeying
* wake up on GTK rekey failure
* wake up on EAP identity request
* wake up on 4-way handshake
* wake up on rfkill release
* wake up on network detection, up to 11 match sets
software interface modes (can always be added):
* AP/VLAN
* monitor
valid interface combinations:
* #{ managed } <= 1, #{ AP, P2P-client, P2P-GO } <= 1, #{ P2P-device } <= 1, #{ NAN } <= 1,
total <= 4, #channels <= 2
HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff
* maximum A-MSDU length
* supported channel width
* short GI for 40 MHz
* max A-MPDU length exponent
* min MPDU start spacing
Device supports TX status socket option.
Device supports HT-IBSS.
Device supports SAE with AUTHENTICATE command
Device supports low priority scan.
Device supports scan flush.
Device supports per-vif TX power setting
P2P GO supports CT window setting
P2P GO supports opportunistic powersave setting
Driver supports full state transitions for AP/GO clients
Driver supports a userspace MPM
Driver/device bandwidth changes during BSS lifetime (AP/GO mode)
Device adds DS IE to probe requests
Device can update TPC Report IE
Device supports static SMPS
Device supports dynamic SMPS
Device supports WMM-AC admission (TSPECs)
Device supports configuring vdev MAC-addr on create.
Device supports VHT-IBSS.
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 8:19 ` Geoffroy Letourneur
@ 2020-03-26 8:24 ` Johannes Berg
2020-03-26 9:27 ` Geoffroy Letourneur
0 siblings, 1 reply; 9+ messages in thread
From: Johannes Berg @ 2020-03-26 8:24 UTC (permalink / raw)
To: Geoffroy Letourneur, Matthias May, linux-wireless, linuxwifi
Cc: Gilles Mazars, Martin Bourreau
On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur wrote:
> Hello Matthias,
>
> The AX200 module seems to support AP mode it works with 2.4GHz Wifi
> 802.11n mode, I tested it. But maybe it could not support this mode in
> 802.11ax.
2.4 GHz should be OK - 5 GHz is generally limited on those devices due
to regulatory restrictions.
johannes
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 8:24 ` Johannes Berg
@ 2020-03-26 9:27 ` Geoffroy Letourneur
2020-03-26 14:32 ` Dan Williams
0 siblings, 1 reply; 9+ messages in thread
From: Geoffroy Letourneur @ 2020-03-26 9:27 UTC (permalink / raw)
To: Johannes Berg, Matthias May, linux-wireless, linuxwifi
Cc: Gilles Mazars, Martin Bourreau
Hello Johannes,
What you mean by regulatory restrictions?
Hardware restriction ?
Software restriction ?
Law restriction ?
Best regards Geo
--
Geoffroy LETOURNEUR
Embedded Software Engineer,
SSIC, Paris
Email: g.letourneur@samsung.com
Tel: +33 6 45 14 24 32
Le 26/03/2020 09:24, « Johannes Berg » <johannes@sipsolutions.net> a écrit :
On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur wrote:
> Hello Matthias,
>
> The AX200 module seems to support AP mode it works with 2.4GHz Wifi
> 802.11n mode, I tested it. But maybe it could not support this mode in
> 802.11ax.
2.4 GHz should be OK - 5 GHz is generally limited on those devices due
to regulatory restrictions.
johannes
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 9:27 ` Geoffroy Letourneur
@ 2020-03-26 14:32 ` Dan Williams
2020-03-26 17:38 ` Martin Bourreau
0 siblings, 1 reply; 9+ messages in thread
From: Dan Williams @ 2020-03-26 14:32 UTC (permalink / raw)
To: Geoffroy Letourneur, Johannes Berg, Matthias May, linux-wireless,
linuxwifi
Cc: Gilles Mazars, Martin Bourreau
On Thu, 2020-03-26 at 09:27 +0000, Geoffroy Letourneur wrote:
> Hello Johannes,
>
> What you mean by regulatory restrictions?
> Hardware restriction ?
> Software restriction ?
> Law restriction ?
There are legal restrictions on spectrum use, especially in the 5Ghz
range. Which means additional effort must be put into both hardware and
software to satisfy those restrictions. And perhaps that effort was not
considered cost effective for the AX200.
Dan
> Best regards Geo
>
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
>
> Email: g.letourneur@samsung.com
> Tel: +33 6 45 14 24 32
>
>
>
>
> Le 26/03/2020 09:24, « Johannes Berg » <johannes@sipsolutions.net> a
> écrit :
>
> On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur wrote:
> > Hello Matthias,
> >
> > The AX200 module seems to support AP mode it works with 2.4GHz
> Wifi
> > 802.11n mode, I tested it. But maybe it could not support this
> mode in
> > 802.11ax.
>
> 2.4 GHz should be OK - 5 GHz is generally limited on those
> devices due
> to regulatory restrictions.
>
> johannes
>
>
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 14:32 ` Dan Williams
@ 2020-03-26 17:38 ` Martin Bourreau
2020-03-26 17:45 ` Duncan McDonald
0 siblings, 1 reply; 9+ messages in thread
From: Martin Bourreau @ 2020-03-26 17:38 UTC (permalink / raw)
To: Dan Williams, Geoffroy Letourneur, Johannes Berg, Matthias May,
linux-wireless, linuxwifi
Cc: Gilles Mazars, Kitty (Xia) Lou, Harris Warren, Raymond Chan,
Duncan McDonald, Seshu (Leela Seshu Reddy) Cheedepudi
Adding people for awareness of the conversation.
Le 26/03/2020 15:32, « Dan Williams » <dcbw@redhat.com> a écrit :
On Thu, 2020-03-26 at 09:27 +0000, Geoffroy Letourneur wrote:
> Hello Johannes,
>
> What you mean by regulatory restrictions?
> Hardware restriction ?
> Software restriction ?
> Law restriction ?
There are legal restrictions on spectrum use, especially in the 5Ghz
range. Which means additional effort must be put into both hardware and
software to satisfy those restrictions. And perhaps that effort was not
considered cost effective for the AX200.
Dan
> Best regards Geo
>
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
>
> Email: g.letourneur@samsung.com
> Tel: +33 6 45 14 24 32
>
>
>
>
> Le 26/03/2020 09:24, « Johannes Berg » <johannes@sipsolutions.net> a
> écrit :
>
> On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur wrote:
> > Hello Matthias,
> >
> > The AX200 module seems to support AP mode it works with 2.4GHz
> Wifi
> > 802.11n mode, I tested it. But maybe it could not support this
> mode in
> > 802.11ax.
>
> 2.4 GHz should be OK - 5 GHz is generally limited on those
> devices due
> to regulatory restrictions.
>
> johannes
>
>
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* RE: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 17:38 ` Martin Bourreau
@ 2020-03-26 17:45 ` Duncan McDonald
2020-03-26 20:47 ` Dan Williams
0 siblings, 1 reply; 9+ messages in thread
From: Duncan McDonald @ 2020-03-26 17:45 UTC (permalink / raw)
To: Martin Bourreau, Dan Williams, Geoffroy Letourneur,
Johannes Berg, Matthias May, linux-wireless, linuxwifi
Cc: Gilles Mazars, Kitty (Xia) Lou, Harris Warren, Raymond Chan,
Seshu (Leela Seshu Reddy) Cheedepudi
Martin,
Interesting. I knew there were issues for 802.11ax in the ISM band outside of the ones currently used for wifi, but it seems the issues extend to the current 5GHz band as well.
Duncan
-----Original Message-----
From: Martin Bourreau
Sent: Thursday, March 26, 2020 10:39 AM
To: Dan Williams <dcbw@redhat.com>; Geoffroy Letourneur <g.letourneur@samsung.com>; Johannes Berg <johannes@sipsolutions.net>; Matthias May <matthias.may@neratec.com>; linux-wireless@vger.kernel.org; linuxwifi@intel.com
Cc: Gilles Mazars <g.mazars@samsung.com>; Kitty (Xia) Lou <kitty.lou@samsung.com>; Harris Warren <harris.w@samsung.com>; Raymond Chan <raymond.chan@samsung.com>; Duncan McDonald <d.mcdonald@samsung.com>; Seshu (Leela Seshu Reddy) Cheedepudi <seshu.reddy@samsung.com>
Subject: Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
Adding people for awareness of the conversation.
Le 26/03/2020 15:32, « Dan Williams » <dcbw@redhat.com> a écrit :
On Thu, 2020-03-26 at 09:27 +0000, Geoffroy Letourneur wrote:
> Hello Johannes,
>
> What you mean by regulatory restrictions?
> Hardware restriction ?
> Software restriction ?
> Law restriction ?
There are legal restrictions on spectrum use, especially in the 5Ghz
range. Which means additional effort must be put into both hardware and
software to satisfy those restrictions. And perhaps that effort was not
considered cost effective for the AX200.
Dan
> Best regards Geo
>
> --
> Geoffroy LETOURNEUR
> Embedded Software Engineer,
> SSIC, Paris
>
> Email: g.letourneur@samsung.com
> Tel: +33 6 45 14 24 32
>
>
>
>
> Le 26/03/2020 09:24, « Johannes Berg » <johannes@sipsolutions.net> a
> écrit :
>
> On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur wrote:
> > Hello Matthias,
> >
> > The AX200 module seems to support AP mode it works with 2.4GHz
> Wifi
> > 802.11n mode, I tested it. But maybe it could not support this
> mode in
> > 802.11ax.
>
> 2.4 GHz should be OK - 5 GHz is generally limited on those
> devices due
> to regulatory restrictions.
>
> johannes
>
>
>
^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano.
2020-03-26 17:45 ` Duncan McDonald
@ 2020-03-26 20:47 ` Dan Williams
0 siblings, 0 replies; 9+ messages in thread
From: Dan Williams @ 2020-03-26 20:47 UTC (permalink / raw)
To: Duncan McDonald, Martin Bourreau, Geoffroy Letourneur,
Johannes Berg, Matthias May, linux-wireless, linuxwifi
Cc: Gilles Mazars, Kitty (Xia) Lou, Harris Warren, Raymond Chan,
Seshu (Leela Seshu Reddy) Cheedepudi
On Thu, 2020-03-26 at 17:45 +0000, Duncan McDonald wrote:
> Martin,
>
> Interesting. I knew there were issues for 802.11ax in the ISM band
> outside of the ones currently used for wifi, but it seems the issues
> extend to the current 5GHz band as well.
To be clear, I have no idea about this specific device or case. But
802.11h is an example of behavior required for legal/regulatory
reasons.
https://www.prowesswireless.com/post/2016/05/28/dfs-80211h
https://www.cisco.com/c/en/us/support/docs/wireless-mobility/80211/213882-radar-detection-in-dynamic-frequency-sel.html
Dan
> Duncan
>
> -----Original Message-----
> From: Martin Bourreau
> Sent: Thursday, March 26, 2020 10:39 AM
> To: Dan Williams <dcbw@redhat.com>; Geoffroy Letourneur <
> g.letourneur@samsung.com>; Johannes Berg <johannes@sipsolutions.net>;
> Matthias May <matthias.may@neratec.com>;
> linux-wireless@vger.kernel.org; linuxwifi@intel.com
> Cc: Gilles Mazars <g.mazars@samsung.com>; Kitty (Xia) Lou <
> kitty.lou@samsung.com>; Harris Warren <harris.w@samsung.com>; Raymond
> Chan <raymond.chan@samsung.com>; Duncan McDonald <
> d.mcdonald@samsung.com>; Seshu (Leela Seshu Reddy) Cheedepudi <
> seshu.reddy@samsung.com>
> Subject: Re: Geoffroy LETOURNEUR: Samsung AX200 system integration on
> Nvidia Nano.
>
> Adding people for awareness of the conversation.
>
> Le 26/03/2020 15:32, « Dan Williams » <dcbw@redhat.com> a écrit :
>
> On Thu, 2020-03-26 at 09:27 +0000, Geoffroy Letourneur wrote:
> > Hello Johannes,
> >
> > What you mean by regulatory restrictions?
> > Hardware restriction ?
> > Software restriction ?
> > Law restriction ?
>
> There are legal restrictions on spectrum use, especially in the
> 5Ghz
> range. Which means additional effort must be put into both
> hardware and
> software to satisfy those restrictions. And perhaps that effort
> was not
> considered cost effective for the AX200.
>
> Dan
>
> > Best regards Geo
> >
> > --
> > Geoffroy LETOURNEUR
> > Embedded Software Engineer,
> > SSIC, Paris
> >
> > Email: g.letourneur@samsung.com
> > Tel: +33 6 45 14 24 32
> >
> >
> >
> >
> > Le 26/03/2020 09:24, « Johannes Berg » <
> johannes@sipsolutions.net> a
> > écrit :
> >
> > On Thu, 2020-03-26 at 08:19 +0000, Geoffroy Letourneur
> wrote:
> > > Hello Matthias,
> > >
> > > The AX200 module seems to support AP mode it works with
> 2.4GHz
> > Wifi
> > > 802.11n mode, I tested it. But maybe it could not support
> this
> > mode in
> > > 802.11ax.
> >
> > 2.4 GHz should be OK - 5 GHz is generally limited on those
> > devices due
> > to regulatory restrictions.
> >
> > johannes
> >
> >
> >
>
>
>
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2020-03-26 20:47 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
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2020-03-25 15:54 ` Geoffroy LETOURNEUR: Samsung AX200 system integration on Nvidia Nano Geoffroy Letourneur
2020-03-26 7:33 ` Matthias May
2020-03-26 8:19 ` Geoffroy Letourneur
2020-03-26 8:24 ` Johannes Berg
2020-03-26 9:27 ` Geoffroy Letourneur
2020-03-26 14:32 ` Dan Williams
2020-03-26 17:38 ` Martin Bourreau
2020-03-26 17:45 ` Duncan McDonald
2020-03-26 20:47 ` Dan Williams
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