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Message-ID: <20240615093433.3659829-2-s-vadapalli@ti.com>
Date: Sat, 15 Jun 2024 15:04:32 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: <vkoul@...nel.org>, <kishon@...nel.org>, <sjakhade@...ence.com>,
<rogerq@...nel.org>, <thomas.richard@...tlin.com>, <robh@...nel.org>
CC: <linux-phy@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
<s-vadapalli@...com>
Subject: [PATCH 1/2] phy: cadence-torrent: Add PCIe multilink configuration for 100MHz refclk
From: Swapnil Jakhade <sjakhade@...ence.com>
Add register sequences to support PCIe multilink configuration for 100MHz
reference clock. Maximum two PCIe links are supported.
Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
drivers/phy/cadence/phy-cadence-torrent.c | 130 +++++++++++++++++++++-
1 file changed, 129 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
index 89e647bff99f..db60faeea988 100644
--- a/drivers/phy/cadence/phy-cadence-torrent.c
+++ b/drivers/phy/cadence/phy-cadence-torrent.c
@@ -197,6 +197,7 @@
#define RX_SDCAL1_INIT_TMR 0x004CU
#define RX_SDCAL1_ITER_TMR 0x004DU
#define RX_CDRLF_CNFG 0x0080U
+#define RX_CDRLF_CNFG2 0x0081U
#define RX_CDRLF_CNFG3 0x0082U
#define RX_SIGDET_HL_FILT_TMR 0x0090U
#define RX_REE_GCSM1_CTRL 0x0108U
@@ -204,6 +205,7 @@
#define RX_REE_GCSM1_EQENM_PH2 0x010AU
#define RX_REE_GCSM2_CTRL 0x0110U
#define RX_REE_PERGCSM_CTRL 0x0118U
+#define RX_REE_PEAK_UTHR 0x0142U
#define RX_REE_ATTEN_THR 0x0149U
#define RX_REE_TAP1_CLIP 0x0171U
#define RX_REE_TAP2TON_CLIP 0x0172U
@@ -212,6 +214,7 @@
#define RX_DIAG_DFE_CTRL 0x01E0U
#define RX_DIAG_DFE_AMP_TUNE_2 0x01E2U
#define RX_DIAG_DFE_AMP_TUNE_3 0x01E3U
+#define RX_DIAG_REE_DAC_CTRL 0x01E4U
#define RX_DIAG_NQST_CTRL 0x01E5U
#define RX_DIAG_SIGDET_TUNE 0x01E8U
#define RX_DIAG_PI_RATE 0x01F4U
@@ -3075,6 +3078,101 @@ static void cdns_torrent_phy_remove(struct platform_device *pdev)
cdns_torrent_clk_cleanup(cdns_phy);
}
+/* Multi link PCIe configuration */
+static struct cdns_reg_pairs ml_pcie_link_cmn_regs[] = {
+ {0x0002, PHY_PLL_CFG},
+ {0x0601, CMN_PDIAG_PLL0_CLK_SEL_M0}
+};
+
+static struct cdns_reg_pairs ml_pcie_xcvr_diag_ln_regs[] = {
+ {0x0100, XCVR_DIAG_HSCLK_SEL},
+ {0x0001, XCVR_DIAG_HSCLK_DIV},
+ {0x0812, XCVR_DIAG_PLLDRC_CTRL}
+};
+
+static struct cdns_torrent_vals ml_pcie_link_cmn_vals = {
+ .reg_pairs = ml_pcie_link_cmn_regs,
+ .num_regs = ARRAY_SIZE(ml_pcie_link_cmn_regs),
+};
+
+static struct cdns_torrent_vals ml_pcie_xcvr_diag_ln_vals = {
+ .reg_pairs = ml_pcie_xcvr_diag_ln_regs,
+ .num_regs = ARRAY_SIZE(ml_pcie_xcvr_diag_ln_regs),
+};
+
+/* Multi link PCIe, 100 MHz Ref clk, no SSC */
+static struct cdns_reg_pairs ml_pcie_100_no_ssc_cmn_regs[] = {
+ {0x0003, CMN_PLL0_VCOCAL_TCTRL},
+ {0x0003, CMN_PLL1_VCOCAL_TCTRL}
+};
+
+static struct cdns_reg_pairs ml_pcie_100_no_ssc_rx_ln_regs[] = {
+ {0x0019, RX_REE_TAP1_CLIP},
+ {0x0019, RX_REE_TAP2TON_CLIP},
+ {0x0008, RX_REE_PEAK_UTHR},
+ {0x018E, RX_CDRLF_CNFG},
+ {0x2E33, RX_CDRLF_CNFG2},
+ {0x0001, RX_DIAG_ACYA},
+ {0x0C21, RX_DIAG_DFE_AMP_TUNE_2},
+ {0x0002, RX_DIAG_DFE_AMP_TUNE_3},
+ {0x0005, RX_DIAG_REE_DAC_CTRL}
+};
+
+static struct cdns_torrent_vals ml_pcie_100_no_ssc_cmn_vals = {
+ .reg_pairs = ml_pcie_100_no_ssc_cmn_regs,
+ .num_regs = ARRAY_SIZE(ml_pcie_100_no_ssc_cmn_regs),
+};
+
+static struct cdns_torrent_vals ml_pcie_100_no_ssc_rx_ln_vals = {
+ .reg_pairs = ml_pcie_100_no_ssc_rx_ln_regs,
+ .num_regs = ARRAY_SIZE(ml_pcie_100_no_ssc_rx_ln_regs),
+};
+
+/* Multi link PCIe, 100 MHz Ref clk, internal SSC */
+static struct cdns_reg_pairs ml_pcie_100_int_ssc_cmn_regs[] = {
+ {0x0004, CMN_PLL0_DSM_DIAG_M0},
+ {0x0004, CMN_PLL1_DSM_DIAG_M0},
+ {0x0509, CMN_PDIAG_PLL0_CP_PADJ_M0},
+ {0x0509, CMN_PDIAG_PLL1_CP_PADJ_M0},
+ {0x0F00, CMN_PDIAG_PLL0_CP_IADJ_M0},
+ {0x0F00, CMN_PDIAG_PLL1_CP_IADJ_M0},
+ {0x0F08, CMN_PDIAG_PLL0_FILT_PADJ_M0},
+ {0x0F08, CMN_PDIAG_PLL1_FILT_PADJ_M0},
+ {0x0064, CMN_PLL0_INTDIV_M0},
+ {0x0050, CMN_PLL1_INTDIV_M0},
+ {0x0002, CMN_PLL0_FRACDIVH_M0},
+ {0x0002, CMN_PLL1_FRACDIVH_M0},
+ {0x0044, CMN_PLL0_HIGH_THR_M0},
+ {0x0036, CMN_PLL1_HIGH_THR_M0},
+ {0x0002, CMN_PDIAG_PLL0_CTRL_M0},
+ {0x0002, CMN_PDIAG_PLL1_CTRL_M0},
+ {0x0001, CMN_PLL0_SS_CTRL1_M0},
+ {0x0001, CMN_PLL1_SS_CTRL1_M0},
+ {0x011B, CMN_PLL0_SS_CTRL2_M0},
+ {0x011B, CMN_PLL1_SS_CTRL2_M0},
+ {0x006E, CMN_PLL0_SS_CTRL3_M0},
+ {0x0058, CMN_PLL1_SS_CTRL3_M0},
+ {0x000E, CMN_PLL0_SS_CTRL4_M0},
+ {0x0012, CMN_PLL1_SS_CTRL4_M0},
+ {0x0C5E, CMN_PLL0_VCOCAL_REFTIM_START},
+ {0x0C5E, CMN_PLL1_VCOCAL_REFTIM_START},
+ {0x0C56, CMN_PLL0_VCOCAL_PLLCNT_START},
+ {0x0C56, CMN_PLL1_VCOCAL_PLLCNT_START},
+ {0x0003, CMN_PLL0_VCOCAL_TCTRL},
+ {0x0003, CMN_PLL1_VCOCAL_TCTRL},
+ {0x00C7, CMN_PLL0_LOCK_REFCNT_START},
+ {0x00C7, CMN_PLL1_LOCK_REFCNT_START},
+ {0x00C7, CMN_PLL0_LOCK_PLLCNT_START},
+ {0x00C7, CMN_PLL1_LOCK_PLLCNT_START},
+ {0x0005, CMN_PLL0_LOCK_PLLCNT_THR},
+ {0x0005, CMN_PLL1_LOCK_PLLCNT_THR}
+};
+
+static struct cdns_torrent_vals ml_pcie_100_int_ssc_cmn_vals = {
+ .reg_pairs = ml_pcie_100_int_ssc_cmn_regs,
+ .num_regs = ARRAY_SIZE(ml_pcie_100_int_ssc_cmn_regs),
+};
+
/* SGMII and QSGMII link configuration */
static struct cdns_reg_pairs sgmii_qsgmii_link_cmn_regs[] = {
{0x0002, PHY_PLL_CFG}
@@ -4475,7 +4573,7 @@ static struct cdns_torrent_vals sl_sgmii_xcvr_diag_ln_vals = {
.num_regs = ARRAY_SIZE(sl_sgmii_xcvr_diag_ln_regs),
};
-/* Multi link PCIe, 100 MHz Ref clk, internal SSC */
+/* For PCIe (with some other protocol), 100 MHz Ref clk, internal SSC */
static struct cdns_reg_pairs pcie_100_int_ssc_cmn_regs[] = {
{0x0004, CMN_PLL0_DSM_DIAG_M0},
{0x0004, CMN_PLL0_DSM_DIAG_M1},
@@ -4614,6 +4712,7 @@ static struct cdns_torrent_vals_entry link_cmn_vals_entries[] = {
{CDNS_TORRENT_KEY_ANYCLK(TYPE_DP, TYPE_USB), &usb_dp_link_cmn_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_NONE), NULL},
+ {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_PCIE), &ml_pcie_link_cmn_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_SGMII), &pcie_sgmii_link_cmn_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_QSGMII), &pcie_sgmii_link_cmn_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USB), &pcie_usb_link_cmn_vals},
@@ -4650,6 +4749,7 @@ static struct cdns_torrent_vals_entry xcvr_diag_vals_entries[] = {
{CDNS_TORRENT_KEY_ANYCLK(TYPE_DP, TYPE_USB), &dp_usb_xcvr_diag_ln_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_NONE), NULL},
+ {CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_PCIE), &ml_pcie_xcvr_diag_ln_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_SGMII), &pcie_sgmii_xcvr_diag_ln_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_QSGMII), &pcie_sgmii_xcvr_diag_ln_vals},
{CDNS_TORRENT_KEY_ANYCLK(TYPE_PCIE, TYPE_USB), &pcie_usb_xcvr_diag_ln_vals},
@@ -4700,6 +4800,10 @@ static struct cdns_torrent_vals_entry cmn_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), &sl_pcie_100_int_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), &ml_pcie_100_no_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), &ml_pcie_100_no_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), &ml_pcie_100_int_ssc_cmn_vals},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), &pcie_100_no_ssc_cmn_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), &pcie_100_no_ssc_cmn_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), &pcie_100_int_ssc_cmn_vals},
@@ -4782,6 +4886,10 @@ static struct cdns_torrent_vals_entry cdns_tx_ln_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), NULL},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), NULL},
@@ -4864,6 +4972,10 @@ static struct cdns_torrent_vals_entry cdns_rx_ln_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), &ml_pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), &ml_pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), &ml_pcie_100_no_ssc_rx_ln_vals},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
@@ -4982,6 +5094,10 @@ static struct cdns_torrent_vals_entry ti_tx_ln_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), NULL},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), NULL},
@@ -5098,6 +5214,10 @@ static struct cdns_torrent_vals_entry ti_j7200_cmn_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), &sl_pcie_100_int_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), &ml_pcie_100_no_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), &ml_pcie_100_no_ssc_cmn_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), &ml_pcie_100_int_ssc_cmn_vals},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), &pcie_100_no_ssc_cmn_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), &pcie_100_no_ssc_cmn_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), &pcie_100_int_ssc_cmn_vals},
@@ -5180,6 +5300,10 @@ static struct cdns_torrent_vals_entry ti_j7200_tx_ln_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), NULL},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), NULL},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), NULL},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), NULL},
@@ -5262,6 +5386,10 @@ static struct cdns_torrent_vals_entry ti_j7200_rx_ln_vals_entries[] = {
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, EXTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_NONE, INTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, NO_SSC), &pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, EXTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
+ {CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_PCIE, INTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
+
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, NO_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, EXTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
{CDNS_TORRENT_KEY(CLK_100_MHZ, CLK_100_MHZ, TYPE_PCIE, TYPE_SGMII, INTERNAL_SSC), &pcie_100_no_ssc_rx_ln_vals},
--
2.40.1
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