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authorSwapnil Jakhade <sjakhade@cadence.com>2021-07-28 16:54:53 +0200
committerVinod Koul <vkoul@kernel.org>2021-08-17 15:42:44 +0530
commit84f55df836916be2b052a5000cca8d7d9fcf2520 (patch)
treed2f387a496768ac7ee45b40bad034cd27a87e03c /drivers/phy/cadence
parent8f3ced2fd4906523e251f252dee03f6c22129e08 (diff)
phy: cadence-torrent: Add debug information for PHY configuration
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>
Diffstat (limited to 'drivers/phy/cadence')
-rw-r--r--drivers/phy/cadence/phy-cadence-torrent.c36
1 files changed, 32 insertions, 4 deletions
diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index e4dd8d1711a6..4024db052cf9 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -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;
put_child: