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Re: [PATCH] mt76x0: add quirk to disable 2.4GHz band for Archer T1U

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On 9/25/2018 11:48 AM, Stanislaw Gruszka wrote:
On Tue, Sep 25, 2018 at 11:07:47AM +0200, Lorenzo Bianconi wrote:
On Sep 25, Felix Fietkau wrote:
On 2018-09-25 09:54, Lorenzo Bianconi wrote:

diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
index 76d607f73758..b7a1069ecd0e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x0/usb.c
@@ -45,7 +45,8 @@
 	{ USB_DEVICE(0x20f4, 0x806b) },	/* TRENDnet TEW-806UBH  */
 	{ USB_DEVICE(0x7392, 0xc711) }, /* Devolo Wifi ac Stick */
 	{ USB_DEVICE(0x0df6, 0x0079) }, /* Sitecom Europe B.V. ac  Stick */
-	{ USB_DEVICE(0x2357, 0x0105) }, /* TP-LINK Archer T1U */
+	{ USB_DEVICE(0x2357, 0x0105),
+	  .driver_info = 1,	     }, /* TP-LINK Archer T1U */

Hi Stanislaw,

what about using 'ieee80211-freq-limit' OF property to limit available wireless
band? In this way we can take into account even the opposite case (no 5GHz).
That doesn't make sense for USB devices, which can be plugged into any
machine.

Ack, right.
What about a more general solution like adding an enum { NO_5GHz = 1, NO_2GHz }?
Does it worth to implement it now?

I do not see reason for that. Basically band information should be
read from EEPROM, I do not expect need for more quirks like this.

Well. Never say never :-p And the phrase "quirks like this" does seem to leave the door open for other quirks. Or did you mean "quirks using driver_info"?

Regards,
Arend




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