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Message-ID: <1617946456-27773-12-git-send-email-sjakhade@cadence.com>
Date: Fri, 9 Apr 2021 07:34:13 +0200
From: Swapnil Jakhade <sjakhade@...ence.com>
To: <vkoul@...nel.org>, <kishon@...com>, <p.zabel@...gutronix.de>,
<linux-phy@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC: <mparab@...ence.com>, <sjakhade@...ence.com>, <lokeshvutla@...com>
Subject: [PATCH 11/14] phy: cadence-torrent: Add multilink DP support
Add multilink support for DP. This needs changes in functions
configuring default single link DP with master lane 0 to support
non-zero master lane values and associated PLL configurations.
Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
---
drivers/phy/cadence/phy-cadence-torrent.c | 498 +++++++++++++---------
1 file changed, 289 insertions(+), 209 deletions(-)
diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 44e28ea8ffa7..becbf8456b2d 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -62,16 +62,11 @@
*/
#define PHY_AUX_CTRL 0x04
#define PHY_RESET 0x20
-#define PMA_TX_ELEC_IDLE_MASK 0xF0U
#define PMA_TX_ELEC_IDLE_SHIFT 4
-#define PHY_L00_RESET_N_MASK 0x01U
#define PHY_PMA_XCVR_PLLCLK_EN 0x24
#define PHY_PMA_XCVR_PLLCLK_EN_ACK 0x28
#define PHY_PMA_XCVR_POWER_STATE_REQ 0x2c
-#define PHY_POWER_STATE_LN_0 0x0000
-#define PHY_POWER_STATE_LN_1 0x0008
-#define PHY_POWER_STATE_LN_2 0x0010
-#define PHY_POWER_STATE_LN_3 0x0018
+#define PHY_POWER_STATE_LN(ln) ((ln) * 8)
#define PMA_XCVR_POWER_STATE_REQ_LN_MASK 0x3FU
#define PHY_PMA_XCVR_POWER_STATE_ACK 0x30
#define PHY_PMA_CMN_READY 0x34
@@ -834,74 +829,90 @@ void cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(struct cdns_torrent_phy *cdns_phy,
/* Setting VCO for 10.8GHz */
case 2700:
case 5400:
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0028);
- cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_FBH_OVRD_M0, 0x0022);
- cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBH_OVRD_M0, 0x0022);
- cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBL_OVRD_M0, 0x000C);
+ if (cdns_phy->dp_pll & DP_PLL0)
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_FBH_OVRD_M0, 0x0022);
+
+ if (cdns_phy->dp_pll & DP_PLL1) {
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0028);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBH_OVRD_M0, 0x0022);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_FBL_OVRD_M0, 0x000C);
+ }
break;
/* Setting VCO for 9.72GHz */
case 1620:
case 2430:
case 3240:
- cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0061);
- cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0061);
- cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x3333);
- cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x3333);
- cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0042);
- cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0042);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ if (cdns_phy->dp_pll & DP_PLL0) {
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0061);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x3333);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0042);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ }
+ if (cdns_phy->dp_pll & DP_PLL1) {
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0061);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x3333);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0042);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ }
break;
/* Setting VCO for 8.64GHz */
case 2160:
case 4320:
- cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0056);
- cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0056);
- cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x6666);
- cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x6666);
- cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x003A);
- cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x003A);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ if (cdns_phy->dp_pll & DP_PLL0) {
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0056);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVL_M0, 0x6666);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x003A);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ }
+ if (cdns_phy->dp_pll & DP_PLL1) {
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0056);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVL_M0, 0x6666);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x003A);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ }
break;
/* Setting VCO for 8.1GHz */
case 8100:
- cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
- cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0051);
- cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0051);
- cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0036);
- cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0036);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
- cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ if (cdns_phy->dp_pll & DP_PLL0) {
+ cdns_torrent_phy_write(regmap, CMN_PLL0_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_INTDIV_M0, 0x0051);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL0_HIGH_THR_M0, 0x0036);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
+ }
+ if (cdns_phy->dp_pll & DP_PLL1) {
+ cdns_torrent_phy_write(regmap, CMN_PLL1_DSM_DIAG_M0, 0x0004);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_PADJ_M0, 0x0509);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CP_IADJ_M0, 0x0F00);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_FILT_PADJ_M0, 0x0F08);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_INTDIV_M0, 0x0051);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_FRACDIVH_M0, 0x0002);
+ cdns_torrent_phy_write(regmap, CMN_PLL1_HIGH_THR_M0, 0x0036);
+ cdns_torrent_phy_write(regmap, CMN_PDIAG_PLL1_CTRL_M0, 0x0002);
+ }
break;
}
}
@@ -934,43 +945,36 @@ static int cdns_torrent_dp_get_pll(struct cdns_torrent_phy *cdns_phy,
* Enable or disable PLL for selected lanes.
*/
static int cdns_torrent_dp_set_pll_en(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
struct phy_configure_opts_dp *dp,
bool enable)
{
- u32 rd_val;
- u32 ret;
struct regmap *regmap = cdns_phy->regmap_dptx_phy_reg;
+ u32 rd_val, i, pll_ack_val;
+ int ret;
/*
* Used to determine, which bits to check for or enable in
* PHY_PMA_XCVR_PLLCLK_EN register.
*/
- u32 pll_bits;
+ u32 pll_bits = 0;
/* Used to enable or disable lanes. */
u32 pll_val;
- /* Select values of registers and mask, depending on enabled lane
- * count.
- */
- switch (dp->lanes) {
- /* lane 0 */
- case (1):
- pll_bits = 0x00000001;
- break;
- /* lanes 0-1 */
- case (2):
- pll_bits = 0x00000003;
- break;
- /* lanes 0-3, all */
- default:
- pll_bits = 0x0000000F;
- break;
- }
+ /* Select values of registers and mask, depending on enabled lane count. */
+ pll_val = cdns_torrent_dp_read(regmap, PHY_PMA_XCVR_PLLCLK_EN);
- if (enable)
- pll_val = pll_bits;
- else
- pll_val = 0x00000000;
+ if (enable) {
+ for (i = 0; i < dp->lanes; i++)
+ pll_bits |= (0x01U << (inst->mlane + i));
+ pll_val |= pll_bits;
+ pll_ack_val = pll_bits;
+ } else {
+ for (i = 0; i < inst->num_lanes; i++)
+ pll_bits |= (0x01U << (inst->mlane + i));
+ pll_val &= (~pll_bits);
+ pll_ack_val = 0;
+ }
cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_PLLCLK_EN, pll_val);
@@ -978,22 +982,24 @@ static int cdns_torrent_dp_set_pll_en(struct cdns_torrent_phy *cdns_phy,
ret = regmap_read_poll_timeout(regmap,
PHY_PMA_XCVR_PLLCLK_EN_ACK,
rd_val,
- (rd_val & pll_bits) == pll_val,
+ (rd_val & pll_bits) == pll_ack_val,
0, POLL_TIMEOUT_US);
ndelay(100);
return ret;
}
static int cdns_torrent_dp_set_power_state(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
u32 num_lanes,
enum phy_powerstate powerstate)
{
/* Register value for power state for a single byte. */
u32 value_part;
u32 value;
- u32 mask;
+ u32 mask = 0;
u32 read_val;
- u32 ret;
+ int ret;
+ u32 i;
struct regmap *regmap = cdns_phy->regmap_dptx_phy_reg;
switch (powerstate) {
@@ -1009,29 +1015,12 @@ static int cdns_torrent_dp_set_power_state(struct cdns_torrent_phy *cdns_phy,
break;
}
- /* Select values of registers and mask, depending on enabled
- * lane count.
- */
- switch (num_lanes) {
- /* lane 0 */
- case (1):
- value = value_part;
- mask = 0x0000003FU;
- break;
- /* lanes 0-1 */
- case (2):
- value = (value_part
- | (value_part << 8));
- mask = 0x00003F3FU;
- break;
- /* lanes 0-3, all */
- default:
- value = (value_part
- | (value_part << 8)
- | (value_part << 16)
- | (value_part << 24));
- mask = 0x3F3F3F3FU;
- break;
+ /* Select values of registers and mask, depending on enabled lane count. */
+ value = cdns_torrent_dp_read(regmap, PHY_PMA_XCVR_POWER_STATE_REQ);
+
+ for (i = 0; i < num_lanes; i++) {
+ value |= (value_part << PHY_POWER_STATE_LN(inst->mlane + i));
+ mask |= (PMA_XCVR_POWER_STATE_REQ_LN_MASK << PHY_POWER_STATE_LN(inst->mlane + i));
}
/* Set power state A<n>. */
@@ -1046,7 +1035,8 @@ static int cdns_torrent_dp_set_power_state(struct cdns_torrent_phy *cdns_phy,
return ret;
}
-static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy, u32 num_lanes)
+static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst, u32 num_lanes)
{
unsigned int read_val;
int ret;
@@ -1057,7 +1047,7 @@ static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy, u32 num_lanes)
* master lane
*/
ret = regmap_read_poll_timeout(regmap, PHY_PMA_XCVR_PLLCLK_EN_ACK,
- read_val, read_val & 1,
+ read_val, (read_val & (1 << inst->mlane)),
0, POLL_TIMEOUT_US);
if (ret == -ETIMEDOUT) {
dev_err(cdns_phy->dev,
@@ -1067,12 +1057,12 @@ static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy, u32 num_lanes)
ndelay(100);
- ret = cdns_torrent_dp_set_power_state(cdns_phy, num_lanes,
+ ret = cdns_torrent_dp_set_power_state(cdns_phy, inst, num_lanes,
POWERSTATE_A2);
if (ret)
return ret;
- ret = cdns_torrent_dp_set_power_state(cdns_phy, num_lanes,
+ ret = cdns_torrent_dp_set_power_state(cdns_phy, inst, num_lanes,
POWERSTATE_A0);
return ret;
@@ -1096,6 +1086,7 @@ static int cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy)
}
static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
u32 rate, u32 num_lanes)
{
unsigned int clk_sel_val = 0;
@@ -1128,14 +1119,17 @@ static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy,
break;
}
- cdns_torrent_phy_write(cdns_phy->regmap_common_cdb,
- CMN_PDIAG_PLL0_CLK_SEL_M0, clk_sel_val);
- cdns_torrent_phy_write(cdns_phy->regmap_common_cdb,
- CMN_PDIAG_PLL1_CLK_SEL_M0, clk_sel_val);
+ if (cdns_phy->dp_pll & DP_PLL0)
+ cdns_torrent_phy_write(cdns_phy->regmap_common_cdb,
+ CMN_PDIAG_PLL0_CLK_SEL_M0, clk_sel_val);
+
+ if (cdns_phy->dp_pll & DP_PLL1)
+ cdns_torrent_phy_write(cdns_phy->regmap_common_cdb,
+ CMN_PDIAG_PLL1_CLK_SEL_M0, clk_sel_val);
/* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < num_lanes; i++)
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[i],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + i],
XCVR_DIAG_HSCLK_DIV, hsclk_div_val);
}
@@ -1144,49 +1138,89 @@ static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy,
* set and PLL disable request was processed.
*/
static int cdns_torrent_dp_configure_rate(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
struct phy_configure_opts_dp *dp)
{
- u32 read_val, ret;
+ u32 read_val, field_val;
+ int ret;
- /* Disable the cmn_pll0_en before re-programming the new data rate. */
- regmap_field_write(cdns_phy->phy_pma_pll_raw_ctrl, 0x0);
+ /*
+ * Disable the associated PLL (cmn_pll0_en or cmn_pll1_en) before
+ * re-programming the new data rate.
+ */
+ ret = regmap_field_read(cdns_phy->phy_pma_pll_raw_ctrl, &field_val);
+ if (ret)
+ return ret;
+ field_val &= ~(cdns_phy->dp_pll);
+ regmap_field_write(cdns_phy->phy_pma_pll_raw_ctrl, field_val);
/*
* Wait for PLL ready de-assertion.
* For PLL0 - PHY_PMA_CMN_CTRL2[2] == 1
+ * For PLL1 - PHY_PMA_CMN_CTRL2[3] == 1
*/
- ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
- read_val,
- ((read_val >> 2) & 0x01) != 0,
- 0, POLL_TIMEOUT_US);
- if (ret)
- return ret;
+ if (cdns_phy->dp_pll & DP_PLL0) {
+ ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
+ read_val,
+ ((read_val >> 2) & 0x01) != 0,
+ 0, POLL_TIMEOUT_US);
+ if (ret)
+ return ret;
+ }
+
+ if ((cdns_phy->dp_pll & DP_PLL1) && cdns_phy->nsubnodes != 1) {
+ ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
+ read_val,
+ ((read_val >> 3) & 0x01) != 0,
+ 0, POLL_TIMEOUT_US);
+ if (ret)
+ return ret;
+ }
ndelay(200);
/* DP Rate Change - VCO Output settings. */
- if (cdns_phy->ref_clk_rate == CLK_19_2_MHZ)
- /* PMA common configuration 19.2MHz */
- cdns_torrent_dp_pma_cmn_vco_cfg_19_2mhz(cdns_phy, dp->link_rate, dp->ssc);
- else if (cdns_phy->ref_clk_rate == CLK_25_MHZ)
- /* PMA common configuration 25MHz */
- cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy, dp->link_rate, dp->ssc);
- else if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
+ if (cdns_phy->nsubnodes == 1) {
+ if (cdns_phy->ref_clk_rate == CLK_19_2_MHZ)
+ /* PMA common configuration 19.2MHz */
+ cdns_torrent_dp_pma_cmn_vco_cfg_19_2mhz(cdns_phy, dp->link_rate, dp->ssc);
+ else if (cdns_phy->ref_clk_rate == CLK_25_MHZ)
+ /* PMA common configuration 25MHz */
+ cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy, dp->link_rate, dp->ssc);
+ }
+
+ if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
/* PMA common configuration 100MHz */
cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(cdns_phy, dp->link_rate, dp->ssc);
- cdns_torrent_dp_pma_cmn_rate(cdns_phy, dp->link_rate, dp->lanes);
+ cdns_torrent_dp_pma_cmn_rate(cdns_phy, inst, dp->link_rate, dp->lanes);
- /* Enable the cmn_pll0_en. */
- regmap_field_write(cdns_phy->phy_pma_pll_raw_ctrl, 0x3);
+ /* Enable the associated PLL (cmn_pll0_en or cmn_pll1_en) */
+ ret = regmap_field_read(cdns_phy->phy_pma_pll_raw_ctrl, &field_val);
+ if (ret)
+ return ret;
+ field_val |= cdns_phy->dp_pll;
+ regmap_field_write(cdns_phy->phy_pma_pll_raw_ctrl, field_val);
/*
* Wait for PLL ready assertion.
* For PLL0 - PHY_PMA_CMN_CTRL2[0] == 1
+ * For PLL1 - PHY_PMA_CMN_CTRL2[1] == 1
*/
- ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
- read_val,
- (read_val & 0x01) != 0,
- 0, POLL_TIMEOUT_US);
+ if (cdns_phy->dp_pll & DP_PLL0) {
+ ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
+ read_val,
+ (read_val & 0x01) != 0,
+ 0, POLL_TIMEOUT_US);
+ if (ret)
+ return ret;
+ }
+
+ if ((cdns_phy->dp_pll & DP_PLL1) && cdns_phy->nsubnodes != 1)
+ ret = regmap_field_read_poll_timeout(cdns_phy->phy_pma_cmn_ctrl_2,
+ read_val,
+ ((read_val >> 1) & 0x01) != 0,
+ 0, POLL_TIMEOUT_US);
+
return ret;
}
@@ -1254,6 +1288,7 @@ static int cdns_torrent_dp_verify_config(struct cdns_torrent_inst *inst,
/* Set power state A0 and PLL clock enable to 0 on enabled lanes. */
static void cdns_torrent_dp_set_a0_pll(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
u32 num_lanes)
{
struct regmap *regmap = cdns_phy->regmap_dptx_phy_reg;
@@ -1261,27 +1296,13 @@ static void cdns_torrent_dp_set_a0_pll(struct cdns_torrent_phy *cdns_phy,
PHY_PMA_XCVR_POWER_STATE_REQ);
u32 pll_clk_en = cdns_torrent_dp_read(regmap,
PHY_PMA_XCVR_PLLCLK_EN);
+ u32 i;
- /* Lane 0 is always enabled. */
- pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK <<
- PHY_POWER_STATE_LN_0);
- pll_clk_en &= ~0x01U;
-
- if (num_lanes > 1) {
- /* lane 1 */
- pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK <<
- PHY_POWER_STATE_LN_1);
- pll_clk_en &= ~(0x01U << 1);
- }
+ for (i = 0; i < num_lanes; i++) {
+ pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK
+ << PHY_POWER_STATE_LN(inst->mlane + i));
- if (num_lanes > 2) {
- /* lanes 2 and 3 */
- pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK <<
- PHY_POWER_STATE_LN_2);
- pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK <<
- PHY_POWER_STATE_LN_3);
- pll_clk_en &= ~(0x01U << 2);
- pll_clk_en &= ~(0x01U << 3);
+ pll_clk_en &= ~(0x01U << (inst->mlane + i));
}
cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_POWER_STATE_REQ, pwr_state);
@@ -1290,36 +1311,58 @@ static void cdns_torrent_dp_set_a0_pll(struct cdns_torrent_phy *cdns_phy,
/* Configure lane count as required. */
static int cdns_torrent_dp_set_lanes(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
struct phy_configure_opts_dp *dp)
{
- u32 value;
- u32 ret;
struct regmap *regmap = cdns_phy->regmap_dptx_phy_reg;
u8 lane_mask = (1 << dp->lanes) - 1;
+ u8 pma_tx_elec_idle_mask = 0;
+ u32 value, i;
+ int ret;
+
+ lane_mask <<= inst->mlane;
value = cdns_torrent_dp_read(regmap, PHY_RESET);
+
/* clear pma_tx_elec_idle_ln_* bits. */
- value &= ~PMA_TX_ELEC_IDLE_MASK;
+ for (i = 0; i < inst->num_lanes; i++)
+ pma_tx_elec_idle_mask |= 1 << (inst->mlane + i);
+
+ pma_tx_elec_idle_mask <<= PMA_TX_ELEC_IDLE_SHIFT;
+
+ value &= ~pma_tx_elec_idle_mask;
+
/* Assert pma_tx_elec_idle_ln_* for disabled lanes. */
value |= ((~lane_mask) << PMA_TX_ELEC_IDLE_SHIFT) &
- PMA_TX_ELEC_IDLE_MASK;
+ pma_tx_elec_idle_mask;
+
cdns_torrent_dp_write(regmap, PHY_RESET, value);
- /* reset the link by asserting phy_l00_reset_n low */
+ /* reset the link by asserting master lane phy_l0*_reset_n low */
cdns_torrent_dp_write(regmap, PHY_RESET,
- value & (~PHY_L00_RESET_N_MASK));
+ value & (~(1 << inst->mlane)));
/*
- * Assert lane reset on unused lanes and lane 0 so they remain in reset
+ * Assert lane reset on unused lanes and master lane so they remain in reset
* and powered down when re-enabling the link
*/
- value = (value & 0x0000FFF0) | (0x0000000E & lane_mask);
+ for (i = 0; i < inst->num_lanes; i++)
+ value &= (~(1 << (inst->mlane + i)));
+
+ for (i = 1; i < inst->num_lanes; i++)
+ value |= ((1 << (inst->mlane + i)) & lane_mask);
+
cdns_torrent_dp_write(regmap, PHY_RESET, value);
- cdns_torrent_dp_set_a0_pll(cdns_phy, dp->lanes);
+ cdns_torrent_dp_set_a0_pll(cdns_phy, inst, inst->num_lanes);
/* release phy_l0*_reset_n based on used laneCount */
- value = (value & 0x0000FFF0) | (0x0000000F & lane_mask);
+ for (i = 0; i < inst->num_lanes; i++)
+ value &= (~(1 << (inst->mlane + i)));
+
+ for (i = 0; i < inst->num_lanes; i++)
+ value |= ((1 << (inst->mlane + i)) & lane_mask);
+
cdns_torrent_dp_write(regmap, PHY_RESET, value);
/* Wait, until PHY gets ready after releasing PHY reset signal. */
@@ -1330,41 +1373,44 @@ static int cdns_torrent_dp_set_lanes(struct cdns_torrent_phy *cdns_phy,
ndelay(100);
/* release pma_xcvr_pllclk_en_ln_*, only for the master lane */
- cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_PLLCLK_EN, 0x0001);
+ value = cdns_torrent_dp_read(regmap, PHY_PMA_XCVR_PLLCLK_EN);
+ value |= (1 << inst->mlane);
+ cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_PLLCLK_EN, value);
- ret = cdns_torrent_dp_run(cdns_phy, dp->lanes);
+ ret = cdns_torrent_dp_run(cdns_phy, inst, dp->lanes);
return ret;
}
/* Configure link rate as required. */
static int cdns_torrent_dp_set_rate(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
struct phy_configure_opts_dp *dp)
{
- u32 ret;
+ int ret;
- ret = cdns_torrent_dp_set_power_state(cdns_phy, dp->lanes,
+ ret = cdns_torrent_dp_set_power_state(cdns_phy, inst, dp->lanes,
POWERSTATE_A3);
if (ret)
return ret;
- ret = cdns_torrent_dp_set_pll_en(cdns_phy, dp, false);
+ ret = cdns_torrent_dp_set_pll_en(cdns_phy, inst, dp, false);
if (ret)
return ret;
ndelay(200);
- ret = cdns_torrent_dp_configure_rate(cdns_phy, dp);
+ ret = cdns_torrent_dp_configure_rate(cdns_phy, inst, dp);
if (ret)
return ret;
ndelay(200);
- ret = cdns_torrent_dp_set_pll_en(cdns_phy, dp, true);
+ ret = cdns_torrent_dp_set_pll_en(cdns_phy, inst, dp, true);
if (ret)
return ret;
- ret = cdns_torrent_dp_set_power_state(cdns_phy, dp->lanes,
+ ret = cdns_torrent_dp_set_power_state(cdns_phy, inst, dp->lanes,
POWERSTATE_A2);
if (ret)
return ret;
- ret = cdns_torrent_dp_set_power_state(cdns_phy, dp->lanes,
+ ret = cdns_torrent_dp_set_power_state(cdns_phy, inst, dp->lanes,
POWERSTATE_A0);
if (ret)
return ret;
@@ -1375,44 +1421,45 @@ static int cdns_torrent_dp_set_rate(struct cdns_torrent_phy *cdns_phy,
/* Configure voltage swing and pre-emphasis for all enabled lanes. */
static void cdns_torrent_dp_set_voltages(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
struct phy_configure_opts_dp *dp)
{
u8 lane;
u16 val;
for (lane = 0; lane < dp->lanes; lane++) {
- val = cdns_torrent_phy_read(cdns_phy->regmap_tx_lane_cdb[lane],
+ val = cdns_torrent_phy_read(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_DIAG_ACYA);
/*
* Write 1 to register bit TX_DIAG_ACYA[0] to freeze the
* current state of the analog TX driver.
*/
val |= TX_DIAG_ACYA_HBDC_MASK;
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_DIAG_ACYA, val);
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_TXCC_CTRL, 0x08A4);
val = vltg_coeff[dp->voltage[lane]][dp->pre[lane]].diag_tx_drv;
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
DRV_DIAG_TX_DRV, val);
val = vltg_coeff[dp->voltage[lane]][dp->pre[lane]].mgnfs_mult;
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_TXCC_MGNFS_MULT_000,
val);
val = vltg_coeff[dp->voltage[lane]][dp->pre[lane]].cpost_mult;
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_TXCC_CPOST_MULT_00,
val);
- val = cdns_torrent_phy_read(cdns_phy->regmap_tx_lane_cdb[lane],
+ val = cdns_torrent_phy_read(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_DIAG_ACYA);
/*
* Write 0 to register bit TX_DIAG_ACYA[0] to allow the state of
* analog TX driver to reflect the new programmed one.
*/
val &= ~TX_DIAG_ACYA_HBDC_MASK;
- cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[lane],
+ cdns_torrent_phy_write(cdns_phy->regmap_tx_lane_cdb[inst->mlane + lane],
TX_DIAG_ACYA, val);
}
};
@@ -1431,7 +1478,7 @@ static int cdns_torrent_dp_configure(struct phy *phy,
}
if (opts->dp.set_lanes) {
- ret = cdns_torrent_dp_set_lanes(cdns_phy, &opts->dp);
+ ret = cdns_torrent_dp_set_lanes(cdns_phy, inst, &opts->dp);
if (ret) {
dev_err(&phy->dev, "cdns_torrent_dp_set_lanes failed\n");
return ret;
@@ -1439,7 +1486,7 @@ static int cdns_torrent_dp_configure(struct phy *phy,
}
if (opts->dp.set_rate) {
- ret = cdns_torrent_dp_set_rate(cdns_phy, &opts->dp);
+ ret = cdns_torrent_dp_set_rate(cdns_phy, inst, &opts->dp);
if (ret) {
dev_err(&phy->dev, "cdns_torrent_dp_set_rate failed\n");
return ret;
@@ -1447,7 +1494,7 @@ static int cdns_torrent_dp_configure(struct phy *phy,
}
if (opts->dp.set_voltages)
- cdns_torrent_dp_set_voltages(cdns_phy, &opts->dp);
+ cdns_torrent_dp_set_voltages(cdns_phy, inst, &opts->dp);
return ret;
}
@@ -1507,6 +1554,7 @@ static void cdns_torrent_dp_common_init(struct cdns_torrent_phy *cdns_phy,
{
struct regmap *regmap = cdns_phy->regmap_dptx_phy_reg;
unsigned char lane_bits;
+ u32 val;
cdns_torrent_dp_write(regmap, PHY_AUX_CTRL, 0x0003); /* enable AUX */
@@ -1514,37 +1562,46 @@ static void cdns_torrent_dp_common_init(struct cdns_torrent_phy *cdns_phy,
* Set lines power state to A0
* Set lines pll clk enable to 0
*/
- cdns_torrent_dp_set_a0_pll(cdns_phy, inst->num_lanes);
+ cdns_torrent_dp_set_a0_pll(cdns_phy, inst, inst->num_lanes);
/*
* release phy_l0*_reset_n and pma_tx_elec_idle_ln_* based on
* used lanes
*/
lane_bits = (1 << inst->num_lanes) - 1;
- cdns_torrent_dp_write(regmap, PHY_RESET,
- ((0xF & ~lane_bits) << 4) | (0xF & lane_bits));
+ lane_bits <<= inst->mlane;
+
+ val = cdns_torrent_dp_read(regmap, PHY_RESET);
+ val |= (0xF & lane_bits);
+ val &= ~(lane_bits << 4);
+ cdns_torrent_dp_write(regmap, PHY_RESET, val);
/* release pma_xcvr_pllclk_en_ln_*, only for the master lane */
- cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_PLLCLK_EN, 0x0001);
+ val = cdns_torrent_dp_read(regmap, PHY_PMA_XCVR_PLLCLK_EN);
+ val |= (1 << inst->mlane);
+ cdns_torrent_dp_write(regmap, PHY_PMA_XCVR_PLLCLK_EN, val);
/*
* PHY PMA registers configuration functions
* Initialize PHY with max supported link rate, without SSC.
*/
- if (cdns_phy->ref_clk_rate == CLK_19_2_MHZ)
- cdns_torrent_dp_pma_cmn_vco_cfg_19_2mhz(cdns_phy,
- cdns_phy->max_bit_rate,
- false);
- else if (cdns_phy->ref_clk_rate == CLK_25_MHZ)
- cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy,
- cdns_phy->max_bit_rate,
- false);
- else if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
+ if (cdns_phy->nsubnodes == 1) {
+ if (cdns_phy->ref_clk_rate == CLK_19_2_MHZ)
+ cdns_torrent_dp_pma_cmn_vco_cfg_19_2mhz(cdns_phy,
+ cdns_phy->max_bit_rate,
+ false);
+ else if (cdns_phy->ref_clk_rate == CLK_25_MHZ)
+ cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(cdns_phy,
+ cdns_phy->max_bit_rate,
+ false);
+ }
+
+ if (cdns_phy->ref_clk_rate == CLK_100_MHZ)
cdns_torrent_dp_pma_cmn_vco_cfg_100mhz(cdns_phy,
cdns_phy->max_bit_rate,
false);
- cdns_torrent_dp_pma_cmn_rate(cdns_phy, cdns_phy->max_bit_rate,
+ cdns_torrent_dp_pma_cmn_rate(cdns_phy, inst, cdns_phy->max_bit_rate,
inst->num_lanes);
/* take out of reset */
@@ -1563,7 +1620,7 @@ static int cdns_torrent_dp_start(struct cdns_torrent_phy *cdns_phy,
if (ret)
return ret;
- ret = cdns_torrent_dp_run(cdns_phy, inst->num_lanes);
+ ret = cdns_torrent_dp_run(cdns_phy, inst, inst->num_lanes);
return ret;
}
@@ -1591,6 +1648,20 @@ static int cdns_torrent_dp_init(struct phy *phy)
return cdns_torrent_dp_start(cdns_phy, inst, phy);
}
+static int cdns_torrent_dp_multilink_init(struct cdns_torrent_phy *cdns_phy,
+ struct cdns_torrent_inst *inst,
+ struct phy *phy)
+{
+ if (cdns_phy->ref_clk_rate != CLK_100_MHZ) {
+ dev_err(cdns_phy->dev, "Unsupported Ref Clock Rate\n");
+ return -EINVAL;
+ }
+
+ cdns_torrent_dp_common_init(cdns_phy, inst);
+
+ return cdns_torrent_dp_start(cdns_phy, inst, phy);
+}
+
static int cdns_torrent_derived_refclk_enable(struct clk_hw *hw)
{
struct cdns_torrent_derived_refclk *derived_refclk = to_cdns_torrent_derived_refclk(hw);
@@ -1877,8 +1948,11 @@ static int cdns_torrent_phy_init(struct phy *phy)
u32 num_regs;
int i, j;
- if (cdns_phy->nsubnodes > 1)
+ if (cdns_phy->nsubnodes > 1) {
+ if (phy_type == TYPE_DP)
+ return cdns_torrent_dp_multilink_init(cdns_phy, inst, phy);
return 0;
+ }
/**
* Spread spectrum generation is not required or supported
@@ -2122,6 +2196,12 @@ int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy)
}
}
+ if (phy_t1 == TYPE_DP) {
+ ret = cdns_torrent_dp_get_pll(cdns_phy, phy_t2);
+ if (ret)
+ return ret;
+ }
+
reset_control_deassert(cdns_phy->phys[node].lnk_rst);
}
--
2.26.1
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