Re: ARMADA espressobin SATA drive detection failure

[Shinichiro Kawasaki <shinichiro.kawasaki@wdc.com>]

On Aug 13, 2022 / 14:01, Pali Rohár wrote:
> On Saturday 13 August 2022 11:53:39 Shinichiro Kawasaki wrote:
> > On Aug 13, 2022 / 11:32, Pali Rohár wrote:
> > > On Saturday 13 August 2022 01:35:35 Shinichiro Kawasaki wrote:
> > 
> > [...]
> > 
> > > Ok, thanks for testing. It looks like that reset code has some issues.
> > > 
> > > Could you please test this change?
> > > 
> > > @@ -1393,7 +1436,8 @@ static int mvebu_a3700_comphy_probe(struct platform_device *pdev)
> > >  		 * To avoid relying on the bootloader/firmware configuration,
> > >  		 * power off all comphys.
> > >  		 */
> > > -		mvebu_a3700_comphy_reset(phy);
> > > +//		mvebu_a3700_comphy_reset(phy);
> > > +		mvebu_a3700_comphy_power_off(phy);
> > >  		lane->needs_reset = false;
> > >  	}
> > >  
> > > 
> > > It should replace reset code by power off at beginning / probe time.
> > 
> > This change also avoided the "ata1: SATA link down (SStatus 0 SControl 300)"
> > message, and my SSD was detected as /dev/sda. Good symptoms for me. FYI, I
> > attach the console log with this change. (This time, following messages were
> > printed. Not sure if they are important or not.)
> > 
> > [    2.937376] mvebu-a3700-comphy d0018300.phy: invalid COMPHY mode
> > [    2.943581] mvebu-a3700-comphy d0018300.phy: invalid COMPHY mode
> > [    2.949679] mvebu-a3700-comphy d0018300.phy: invalid COMPHY mode
> 
> Those errors are important, it means that power_off did nothing and was
> skipped. So test did nothing.
> 
> Could you please replace mvebu_a3700_comphy_power_off implementation
> with this one and try it again?
> 
> static int mvebu_a3700_comphy_power_off(struct phy *phy)
> {
> 	struct mvebu_a3700_comphy_lane *lane = phy_get_drvdata(phy);
> 
> 	switch (lane->id) {
> 	case 0:
> 		mvebu_a3700_comphy_usb3_power_off(lane);
> 		mvebu_a3700_comphy_ethernet_power_off(lane);
> 		return 0;
> 	case 1:
> 		mvebu_a3700_comphy_pcie_power_off(lane);
> 		mvebu_a3700_comphy_ethernet_power_off(lane);
> 		return 0;
> 	case 2:
> 		mvebu_a3700_comphy_usb3_power_off(lane);
> 		mvebu_a3700_comphy_sata_power_off(lane);
> 		return 0;
> 	default:
> 		dev_err(lane->dev, "invalid COMPHY mode\n");
> 		return -EINVAL;
> 	}
> }

Thanks, but this hunk failed to compile with the error below.

rivers/phy/marvell/phy-mvebu-a3700-comphy.c: In function 'mvebu_a3700_comphy_power_off':
drivers/phy/marvell/phy-mvebu-a3700-comphy.c:1229:17: error: implicit declaration of function 'mvebu_a3700_comphy_usb3_power_off'; did you mean 'mvebu_a3700_comphy_usb3_power_on'? [-Werror=implicit-function-declaration]
 1229 |                 mvebu_a3700_comphy_usb3_power_off(lane);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                 mvebu_a3700_comphy_usb3_power_on
cc1: some warnings being treated as errors

Do I need to add mvebu_a3700_comphy_usb3_power_off() function?

I suspend this work here today. Will resume it tomorrow. Thank you for your
actions so far. Wish this issue gets resolved soon.

-- 
Shin'ichiro Kawasaki
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