On Monday 19 April 2021 14:05:18 Greg KH wrote:
On Sun, Apr 18, 2021 at 03:13:44PM +0200, Pali Rohár wrote:
commit 1fe976d308acb6374c899a4ee8025a0a016e453e upstream.
Since commit fee2d546414d ("net: phy: marvell: mv88e6390 temperature sensor reading"), Linux reports the temperature of Topaz hwmon as constant -75°C.
This is because switches from the Topaz family (88E6141 / 88E6341) have the address of the temperature sensor register different from Peridot.
This address is instead compatible with 88E1510 PHYs, as was used for Topaz before the above mentioned commit.
Create a new mapping table between switch family and PHY ID for families which don't have a model number. And define PHY IDs for Topaz and Peridot families.
Create a new PHY ID and a new PHY driver for Topaz's internal PHY. The only difference from Peridot's PHY driver is the HWMON probing method.
Prior this change Topaz's internal PHY is detected by kernel as:
PHY [...] driver [Marvell 88E6390] (irq=63)
And afterwards as:
PHY [...] driver [Marvell 88E6341 Family] (irq=63)
Signed-off-by: Pali Rohár pali@kernel.org BugLink: https://github.com/globalscaletechnologies/linux/issues/1 Fixes: fee2d546414d ("net: phy: marvell: mv88e6390 temperature sensor reading") Reviewed-by: Marek Behún kabel@kernel.org Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net [pali: Backported to 5.4 version]
This patch is backported to 5.4 version. Tested on Turris Mox with Topaz switch.
What about a 5.10 version?
Is manual backport required also for 5.10? I got email that automatic backporting failed only for 4.19 and 5.4 versions.
thanks,
greg k-h