| Message ID | 20230605073408.8699-1-fercerpav@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | mt76: mt7615: do not advertise 5 GHz on first phy of MT7615D (DBDC) | expand |
On Mon, Jun 05, 2023 at 10:34:07AM +0300, Paul Fertser wrote: > On DBDC devices the first (internal) phy is only capable of using > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, > so avoid the false advertising. Hi Paul, Can I clarify that the second object won't hit the logic change below and thus be limited to 2GHz? > Reported-by: Rani Hod <rani.hod@gmail.com> > Closes: https://github.com/openwrt/openwrt/pull/12361 > Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected") > Cc: stable@vger.kernel.org > Signed-off-by: Paul Fertser <fercerpav@gmail.com> > --- > drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c > index 68e88224b8b1..ccedea7e8a50 100644 > --- a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c > +++ b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c > @@ -128,12 +128,12 @@ mt7615_eeprom_parse_hw_band_cap(struct mt7615_dev *dev) > case MT_EE_5GHZ: > dev->mphy.cap.has_5ghz = true; > break; > - case MT_EE_2GHZ: > - dev->mphy.cap.has_2ghz = true; > - break; > case MT_EE_DBDC: > dev->dbdc_support = true; > fallthrough; > + case MT_EE_2GHZ: > + dev->mphy.cap.has_2ghz = true; > + break; > default: > dev->mphy.cap.has_2ghz = true; > dev->mphy.cap.has_5ghz = true; > -- > 2.34.1 > >
Hi Simon, On Tue, Jun 06, 2023 at 11:03:31AM +0200, Simon Horman wrote: > On Mon, Jun 05, 2023 at 10:34:07AM +0300, Paul Fertser wrote: > > On DBDC devices the first (internal) phy is only capable of using > > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, > > so avoid the false advertising. > > Can I clarify that the second object won't hit the logic change > below and thus be limited to 2GHz? The second object (external 5 GHz phy) doesn't have an EEPROM of its own, and is created explicitly with just this band enabled: https://elixir.bootlin.com/linux/latest/source/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c#L104 https://elixir.bootlin.com/linux/latest/source/drivers/net/wireless/mediatek/mt76/mt7615/init.c#L573 So it won't hit the logic change and it will be limited to 5 GHz.
On Tue, Jun 06, 2023 at 12:12:51PM +0300, Paul Fertser wrote: > Hi Simon, > > On Tue, Jun 06, 2023 at 11:03:31AM +0200, Simon Horman wrote: > > On Mon, Jun 05, 2023 at 10:34:07AM +0300, Paul Fertser wrote: > > > On DBDC devices the first (internal) phy is only capable of using > > > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, > > > so avoid the false advertising. > > > > Can I clarify that the second object won't hit the logic change > > below and thus be limited to 2GHz? > > The second object (external 5 GHz phy) doesn't have an EEPROM of its > own, and is created explicitly with just this band enabled: > > https://elixir.bootlin.com/linux/latest/source/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c#L104 > https://elixir.bootlin.com/linux/latest/source/drivers/net/wireless/mediatek/mt76/mt7615/init.c#L573 > > So it won't hit the logic change and it will be limited to 5 GHz. Thanks Paul, in that case this patch looks good to me. Reviewed-by: Simon Horman <simon.horman@corigine.com>
On 05.06.23 09:34, Paul Fertser wrote: > On DBDC devices the first (internal) phy is only capable of using > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, > so avoid the false advertising. > > Reported-by: Rani Hod <rani.hod@gmail.com> > Closes: https://github.com/openwrt/openwrt/pull/12361 > Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected") > Cc: stable@vger.kernel.org > Signed-off-by: Paul Fertser <fercerpav@gmail.com> Acked-by: Felix Fietkau <nbd@nbd.name> Jakub, could you please pick this one up for 6.5? Thanks, - Felix
On Fri, 21 Jul 2023 10:03:49 +0200 Felix Fietkau wrote: > On 05.06.23 09:34, Paul Fertser wrote: > > On DBDC devices the first (internal) phy is only capable of using > > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, > > so avoid the false advertising. > > > > Reported-by: Rani Hod <rani.hod@gmail.com> > > Closes: https://github.com/openwrt/openwrt/pull/12361 > > Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected") > > Cc: stable@vger.kernel.org > > Signed-off-by: Paul Fertser <fercerpav@gmail.com> > Acked-by: Felix Fietkau <nbd@nbd.name> > > Jakub, could you please pick this one up for 6.5? Kalle reported that he's back to wireless duties a few hours after you posted so just to avoid any confusion - I'll leave this one to Kalle unless told otherwise.
Jakub Kicinski <kuba@kernel.org> writes: > On Fri, 21 Jul 2023 10:03:49 +0200 Felix Fietkau wrote: >> On 05.06.23 09:34, Paul Fertser wrote: >> > On DBDC devices the first (internal) phy is only capable of using >> > 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, >> > so avoid the false advertising. >> > >> > Reported-by: Rani Hod <rani.hod@gmail.com> >> > Closes: https://github.com/openwrt/openwrt/pull/12361 >> > Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected") >> > Cc: stable@vger.kernel.org >> > Signed-off-by: Paul Fertser <fercerpav@gmail.com> >> Acked-by: Felix Fietkau <nbd@nbd.name> >> >> Jakub, could you please pick this one up for 6.5? > > Kalle reported that he's back to wireless duties a few hours after you > posted so just to avoid any confusion - I'll leave this one to Kalle > unless told otherwise. Yup, I'm back. I assigned this to me on patchwork and planning to queue for v6.5.
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c index 68e88224b8b1..ccedea7e8a50 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c @@ -128,12 +128,12 @@ mt7615_eeprom_parse_hw_band_cap(struct mt7615_dev *dev) case MT_EE_5GHZ: dev->mphy.cap.has_5ghz = true; break; - case MT_EE_2GHZ: - dev->mphy.cap.has_2ghz = true; - break; case MT_EE_DBDC: dev->dbdc_support = true; fallthrough; + case MT_EE_2GHZ: + dev->mphy.cap.has_2ghz = true; + break; default: dev->mphy.cap.has_2ghz = true; dev->mphy.cap.has_5ghz = true;
On DBDC devices the first (internal) phy is only capable of using 2.4 GHz band, and the 5 GHz band is exposed via a separate phy object, so avoid the false advertising. Reported-by: Rani Hod <rani.hod@gmail.com> Closes: https://github.com/openwrt/openwrt/pull/12361 Fixes: 7660a1bd0c22 ("mt76: mt7615: register ext_phy if DBDC is detected") Cc: stable@vger.kernel.org Signed-off-by: Paul Fertser <fercerpav@gmail.com> --- drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)