[PATCH v2 8/9] phy: cadence-torrent: Add debug information for PHY configuration
From: Swapnil Jakhade <hidden>
Date: 2021-06-22 15:41:04
Also in:
lkml
Subsystem:
generic phy framework, the rest · Maintainers:
Vinod Koul, Linus Torvalds
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 <redacted> --- drivers/phy/cadence/phy-cadence-torrent.c | 36 ++++++++++++++++++++--- 1 file 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:
--
2.26.1
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