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phy: cadence-torrent: Check PIPE mode PHY status to be ready for operation

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PIPE PHY status is used to communicate the completion of several PHY
functions. Check if PHY is ready for operation while configured for
PIPE mode during startup.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Link: https://lore.kernel.org/r/20210728145454.15945-10-sjakhade@cadence.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Swapnil Jakhade 2021-07-28 16:54:54 +02:00 committed by Vinod Koul
parent 84f55df836
commit 48ac6085bd
1 changed files with 59 additions and 1 deletions
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60
drivers/phy/cadence/phy-cadence-torrent.c
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@ -51,6 +51,10 @@
#define TORRENT_PHY_PCS_COMMON_OFFSET(block_offset) \
(0xC000 << (block_offset))
#define TORRENT_PHY_PCS_LANE_CDB_OFFSET(ln, block_offset, reg_offset) \
((0xD000 << (block_offset)) + \
(((ln) << 8) << (reg_offset)))
#define TORRENT_PHY_PMA_COMMON_OFFSET(block_offset) \
(0xE000 << (block_offset))
@ -223,6 +227,9 @@
#define PHY_PIPE_USB3_GEN2_POST_CFG0 0x0022U
#define PHY_PIPE_USB3_GEN2_POST_CFG1 0x0023U
/* PHY PCS lane registers */
#define PHY_PCS_ISO_LINK_CTRL 0x000BU
/* PHY PMA common registers */
#define PHY_PMA_CMN_CTRL1 0x0000U
#define PHY_PMA_CMN_CTRL2 0x0001U
@ -247,6 +254,9 @@ static const struct reg_field phy_pma_pll_raw_ctrl =
static const struct reg_field phy_reset_ctrl =
REG_FIELD(PHY_RESET, 8, 8);
static const struct reg_field phy_pcs_iso_link_ctrl_1 =
REG_FIELD(PHY_PCS_ISO_LINK_CTRL, 1, 1);
static const struct reg_field phy_pipe_cmn_ctrl1_0 = REG_FIELD(PHY_PIPE_CMN_CTRL1, 0, 0);
#define REFCLK_OUT_NUM_CMN_CONFIG 5
@ -315,12 +325,14 @@ struct cdns_torrent_phy {
struct regmap *regmap_phy_pma_common_cdb;
struct regmap *regmap_tx_lane_cdb[MAX_NUM_LANES];
struct regmap *regmap_rx_lane_cdb[MAX_NUM_LANES];
struct regmap *regmap_phy_pcs_lane_cdb[MAX_NUM_LANES];
struct regmap *regmap_dptx_phy_reg;
struct regmap_field *phy_pll_cfg;
struct regmap_field *phy_pma_cmn_ctrl_1;
struct regmap_field *phy_pma_cmn_ctrl_2;
struct regmap_field *phy_pma_pll_raw_ctrl;
struct regmap_field *phy_reset_ctrl;
struct regmap_field *phy_pcs_iso_link_ctrl_1[MAX_NUM_LANES];
struct clk *clks[CDNS_TORRENT_REFCLK_DRIVER + 1];
struct clk_onecell_data clk_data;
};
@ -455,6 +467,22 @@ static const struct regmap_config cdns_torrent_common_cdb_config = {
.reg_read = cdns_regmap_read,
};
#define TORRENT_PHY_PCS_LANE_CDB_REGMAP_CONF(n) \
{ \
.name = "torrent_phy_pcs_lane" n "_cdb", \
.reg_stride = 1, \
.fast_io = true, \
.reg_write = cdns_regmap_write, \
.reg_read = cdns_regmap_read, \
}
static const struct regmap_config cdns_torrent_phy_pcs_lane_cdb_config[] = {
TORRENT_PHY_PCS_LANE_CDB_REGMAP_CONF("0"),
TORRENT_PHY_PCS_LANE_CDB_REGMAP_CONF("1"),
TORRENT_PHY_PCS_LANE_CDB_REGMAP_CONF("2"),
TORRENT_PHY_PCS_LANE_CDB_REGMAP_CONF("3"),
};
static const struct regmap_config cdns_torrent_phy_pcs_cmn_cdb_config = {
.name = "torrent_phy_pcs_cmn_cdb",
.reg_stride = 1,
@ -1469,7 +1497,15 @@ static int cdns_torrent_phy_on(struct phy *phy)
return ret;
}
mdelay(10);
if (inst->phy_type == TYPE_PCIE || inst->phy_type == TYPE_USB) {
ret = regmap_field_read_poll_timeout(cdns_phy->phy_pcs_iso_link_ctrl_1[inst->mlane],
read_val, !read_val, 1000,
PLL_LOCK_TIMEOUT);
if (ret == -ETIMEDOUT) {
dev_err(cdns_phy->dev, "Timeout waiting for PHY status ready\n");
return ret;
}
}
return 0;
}
@ -1719,6 +1755,7 @@ static int cdns_torrent_regfield_init(struct cdns_torrent_phy *cdns_phy)
struct device *dev = cdns_phy->dev;
struct regmap_field *field;
struct regmap *regmap;
int i;
regmap = cdns_phy->regmap_phy_pcs_common_cdb;
field = devm_regmap_field_alloc(dev, regmap, phy_pll_cfg);
@ -1752,6 +1789,16 @@ static int cdns_torrent_regfield_init(struct cdns_torrent_phy *cdns_phy)
}
cdns_phy->phy_pma_pll_raw_ctrl = field;
for (i = 0; i < MAX_NUM_LANES; i++) {
regmap = cdns_phy->regmap_phy_pcs_lane_cdb[i];
field = devm_regmap_field_alloc(dev, regmap, phy_pcs_iso_link_ctrl_1);
if (IS_ERR(field)) {
dev_err(dev, "PHY_PCS_ISO_LINK_CTRL reg field init for ln %d failed\n", i);
return PTR_ERR(field);
}
cdns_phy->phy_pcs_iso_link_ctrl_1[i] = field;
}
return 0;
}
@ -1812,6 +1859,17 @@ static int cdns_torrent_regmap_init(struct cdns_torrent_phy *cdns_phy)
return PTR_ERR(regmap);
}
cdns_phy->regmap_rx_lane_cdb[i] = regmap;
block_offset = TORRENT_PHY_PCS_LANE_CDB_OFFSET(i, block_offset_shift,
reg_offset_shift);
regmap = cdns_regmap_init(dev, sd_base, block_offset,
reg_offset_shift,
&cdns_torrent_phy_pcs_lane_cdb_config[i]);
if (IS_ERR(regmap)) {
dev_err(dev, "Failed to init PHY PCS lane CDB regmap\n");
return PTR_ERR(regmap);
}
cdns_phy->regmap_phy_pcs_lane_cdb[i] = regmap;
}
block_offset = TORRENT_COMMON_CDB_OFFSET;