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phy: cadence-torrent: Add debug information for PHY configuration

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Add debug information in probe regarding PHY configuration parameters
like single link or multilink protocol along with number of lanes
used for each protocol link.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Link: https://lore.kernel.org/r/20210728145454.15945-9-sjakhade@cadence.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Swapnil Jakhade 2021-07-28 16:54:53 +02:00 committed by Vinod Koul
parent 8f3ced2fd4
commit 84f55df836
1 changed files with 32 additions and 4 deletions
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36
drivers/phy/cadence/phy-cadence-torrent.c
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@ -573,6 +573,24 @@ static const struct coefficients vltg_coeff[4][4] = {
}
};
static const char *cdns_torrent_get_phy_type(enum cdns_torrent_phy_type phy_type)
{
switch (phy_type) {
case TYPE_DP:
return "DisplayPort";
case TYPE_PCIE:
return "PCIe";
case TYPE_SGMII:
return "SGMII";
case TYPE_QSGMII:
return "QSGMII";
case TYPE_USB:
return "USB";
default:
return "None";
}
}
/*
* Set registers responsible for enabling and configuring SSC, with second and
* third register values provided by parameters.
@ -2392,10 +2410,9 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
init_dp_regmap++;
}
dev_info(dev, "%d lanes, max bit rate %d.%03d Gbps\n",
cdns_phy->phys[node].num_lanes,
cdns_phy->max_bit_rate / 1000,
cdns_phy->max_bit_rate % 1000);
dev_dbg(dev, "DP max bit rate %d.%03d Gbps\n",
cdns_phy->max_bit_rate / 1000,
cdns_phy->max_bit_rate % 1000);
gphy->attrs.bus_width = cdns_phy->phys[node].num_lanes;
gphy->attrs.max_link_rate = cdns_phy->max_bit_rate;
@ -2427,6 +2444,17 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev)
goto put_lnk_rst;
}
if (cdns_phy->nsubnodes > 1)
dev_dbg(dev, "Multi-link: %s (%d lanes) & %s (%d lanes)",
cdns_torrent_get_phy_type(cdns_phy->phys[0].phy_type),
cdns_phy->phys[0].num_lanes,
cdns_torrent_get_phy_type(cdns_phy->phys[1].phy_type),
cdns_phy->phys[1].num_lanes);
else
dev_dbg(dev, "Single link: %s (%d lanes)",
cdns_torrent_get_phy_type(cdns_phy->phys[0].phy_type),
cdns_phy->phys[0].num_lanes);
return 0;
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