From: Swapnil Jakhade <sjakhade@cadence.com>
To: <vkoul@kernel.org>, <kishon@ti.com>, <robh+dt@kernel.org>,
<p.zabel@pengutronix.de>, <linux-phy@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>
Cc: <mparab@cadence.com>, <sjakhade@cadence.com>, <lokeshvutla@ti.com>
Subject: [PATCH 08/14] phy: cadence: Sierra: Check PIPE mode PHY status to be ready for operation
Date: Fri, 3 Sep 2021 07:00:48 +0200 [thread overview]
Message-ID: <20210903050054.25627-9-sjakhade@cadence.com> (raw)
In-Reply-To: <20210903050054.25627-1-sjakhade@cadence.com>
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>
---
drivers/phy/cadence/phy-cadence-sierra.c | 73 +++++++++++++++++++++++-
1 file changed, 72 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index e10ef4ecd6c7..e84dfd8f168e 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -151,6 +151,13 @@
#define SIERRA_PHY_PIPE_CMN_CTRL1 0x0
#define SIERRA_PHY_PLL_CFG 0xe
+/* PHY PCS lane registers */
+#define SIERRA_PHY_PCS_LANE_CDB_OFFSET(ln, block_offset, reg_offset) \
+ ((0xD000 << (block_offset)) + \
+ (((ln) << 8) << (reg_offset)))
+
+#define SIERRA_PHY_ISO_LINK_CTRL 0xB
+
/* PHY PMA common registers */
#define SIERRA_PHY_PMA_COMMON_OFFSET(block_offset) \
(0xE000 << (block_offset))
@@ -181,6 +188,8 @@ static const struct reg_field pma_cmn_ready =
REG_FIELD(SIERRA_PHY_PMA_CMN_CTRL, 0, 0);
static const struct reg_field pllctrl_lock =
REG_FIELD(SIERRA_PLLCTRL_STATUS_PREG, 0, 0);
+static const struct reg_field phy_iso_link_ctrl_1 =
+ REG_FIELD(SIERRA_PHY_ISO_LINK_CTRL, 1, 1);
static const char * const clk_names[] = {
[CDNS_SIERRA_PLL_CMNLC] = "pll_cmnlc",
@@ -287,12 +296,14 @@ struct cdns_sierra_phy {
struct reset_control *apb_rst;
struct regmap *regmap_lane_cdb[SIERRA_MAX_LANES];
struct regmap *regmap_phy_pcs_common_cdb;
+ struct regmap *regmap_phy_pcs_lane_cdb[SIERRA_MAX_LANES];
struct regmap *regmap_phy_pma_common_cdb;
struct regmap *regmap_common_cdb;
struct regmap_field *macro_id_type;
struct regmap_field *phy_pll_cfg_1;
struct regmap_field *pma_cmn_ready;
struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES];
+ struct regmap_field *phy_iso_link_ctrl_1[SIERRA_MAX_LANES];
struct regmap_field *cmn_refrcv_refclk_plllc1en_preg[SIERRA_NUM_CMN_PLLC];
struct regmap_field *cmn_refrcv_refclk_termen_preg[SIERRA_NUM_CMN_PLLC];
struct regmap_field *cmn_plllc_pfdclk1_sel_preg[SIERRA_NUM_CMN_PLLC];
@@ -367,6 +378,34 @@ static const struct regmap_config cdns_sierra_phy_pcs_cmn_cdb_config = {
.reg_read = cdns_regmap_read,
};
+#define SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF(n) \
+{ \
+ .name = "sierra_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_sierra_phy_pcs_lane_cdb_config[] = {
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("0"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("1"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("2"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("3"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("4"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("5"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("6"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("7"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("8"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("9"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("10"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("11"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("12"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("13"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("14"),
+ SIERRA_PHY_PCS_LANE_CDB_REGMAP_CONF("15"),
+};
+
static const struct regmap_config cdns_sierra_phy_pma_cmn_cdb_config = {
.name = "sierra_phy_pma_cmn_cdb",
.reg_stride = 1,
@@ -452,6 +491,15 @@ static int cdns_sierra_phy_on(struct phy *gphy)
return ret;
}
+ if (ins->phy_type == TYPE_PCIE || ins->phy_type == TYPE_USB) {
+ ret = regmap_field_read_poll_timeout(sp->phy_iso_link_ctrl_1[ins->mlane],
+ val, !val, 1000, PLL_LOCK_TIME);
+ if (ret) {
+ dev_err(dev, "Timeout waiting for PHY status ready\n");
+ return ret;
+ }
+ }
+
/*
* Wait for cmn_ready assertion
* PHY_PMA_CMN_CTRL[0] == 1
@@ -755,7 +803,17 @@ static int cdns_regfield_init(struct cdns_sierra_phy *sp)
dev_err(dev, "P%d_ENABLE reg field init failed\n", i);
return PTR_ERR(field);
}
- sp->pllctrl_lock[i] = field;
+ sp->pllctrl_lock[i] = field;
+ }
+
+ for (i = 0; i < SIERRA_MAX_LANES; i++) {
+ regmap = sp->regmap_phy_pcs_lane_cdb[i];
+ field = devm_regmap_field_alloc(dev, regmap, phy_iso_link_ctrl_1);
+ if (IS_ERR(field)) {
+ dev_err(dev, "PHY_ISO_LINK_CTRL reg field init for lane %d failed\n", i);
+ return PTR_ERR(field);
+ }
+ sp->phy_iso_link_ctrl_1[i] = field;
}
return 0;
@@ -801,6 +859,19 @@ static int cdns_regmap_init_blocks(struct cdns_sierra_phy *sp,
}
sp->regmap_phy_pcs_common_cdb = regmap;
+ for (i = 0; i < SIERRA_MAX_LANES; i++) {
+ block_offset = SIERRA_PHY_PCS_LANE_CDB_OFFSET(i, block_offset_shift,
+ reg_offset_shift);
+ regmap = cdns_regmap_init(dev, base, block_offset,
+ reg_offset_shift,
+ &cdns_sierra_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);
+ }
+ sp->regmap_phy_pcs_lane_cdb[i] = regmap;
+ }
+
block_offset = SIERRA_PHY_PMA_COMMON_OFFSET(block_offset_shift);
regmap = cdns_regmap_init(dev, base, block_offset, reg_offset_shift,
&cdns_sierra_phy_pma_cmn_cdb_config);
--
2.26.1
next prev parent reply other threads:[~2021-09-03 5:01 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-03 5:00 [PATCH 00/14] PHY: Add support for multilink configurations in Cadence Sierra PHY driver Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 01/14] phy: cadence: Sierra: Use of_device_get_match_data() to get driver data Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 02/14] phy: cadence: Sierra: Prepare driver to add support for multilink configurations Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 03/14] dt-bindings: phy: cadence-sierra: Add binding to specify SSC mode Swapnil Jakhade
2021-09-03 16:12 ` Rob Herring
2021-09-03 5:00 ` [PATCH 04/14] phy: cadence: Sierra: Add support to get SSC type from device tree Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 05/14] phy: cadence: Sierra: Rename some regmap variables to be in sync with Sierra documentation Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 06/14] phy: cadence: Sierra: Add PHY PCS common register configurations Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 07/14] phy: cadence: Sierra: Check cmn_ready assertion during PHY power on Swapnil Jakhade
2021-09-03 5:00 ` Swapnil Jakhade [this message]
2021-09-03 5:00 ` [PATCH 09/14] phy: cadence: Sierra: Update single link PCIe register configuration Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 10/14] phy: cadence: Sierra: Fix to get correct parent for mux clocks Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 11/14] phy: cadence: Sierra: Add support for PHY multilink configurations Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 12/14] phy: cadence: Sierra: Add PCIe + QSGMII PHY multilink configuration Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 13/14] dt-bindings: phy: cadence-sierra: Add clock ID for derived reference clock Swapnil Jakhade
2021-09-03 5:00 ` [PATCH 14/14] phy: cadence: Sierra: Add support for derived reference clock output Swapnil Jakhade
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