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Date: Thu, 13 May 2021 13:17:07 +0530
From: Kishon Vijay Abraham I <kishon@...com>
To: Swapnil Jakhade <sjakhade@...ence.com>, <vkoul@...nel.org>,
<p.zabel@...gutronix.de>, <linux-phy@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
CC: <mparab@...ence.com>, <lokeshvutla@...com>
Subject: Re: [PATCH 12/14] phy: cadence-torrent: Add PCIe + DP multilink
configuration
Hi Swapnil,
On 09/04/21 11:04 am, Swapnil Jakhade wrote:
> Add PCIe + DP no SSC multilink configuration sequences.
Looks neat! Exactly how it was all intended to look like. Thanks!
I would defer merging this till it gets tested in a platform though.
Thanks
Kishon
>
> Signed-off-by: Swapnil Jakhade <sjakhade@...ence.com>
> ---
> drivers/phy/cadence/phy-cadence-torrent.c | 131 ++++++++++++++++++++++
> 1 file changed, 131 insertions(+)
>
> diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c
> index becbf8456b2d..bf37569c6c51 100644
> --- a/drivers/phy/cadence/phy-cadence-torrent.c
> +++ b/drivers/phy/cadence/phy-cadence-torrent.c
> @@ -2572,6 +2572,77 @@ static int cdns_torrent_phy_remove(struct platform_device *pdev)
> return 0;
> }
>
> +/* PCIe and DP link configuration */
> +static struct cdns_reg_pairs pcie_dp_link_cmn_regs[] = {
> + {0x0003, PHY_PLL_CFG},
> + {0x0601, CMN_PDIAG_PLL0_CLK_SEL_M0},
> + {0x0400, CMN_PDIAG_PLL0_CLK_SEL_M1}
> +};
> +
> +static struct cdns_reg_pairs pcie_dp_xcvr_diag_ln_regs[] = {
> + {0x0000, XCVR_DIAG_HSCLK_SEL},
> + {0x0001, XCVR_DIAG_HSCLK_DIV},
> + {0x0012, XCVR_DIAG_PLLDRC_CTRL}
> +};
> +
> +static struct cdns_reg_pairs dp_pcie_xcvr_diag_ln_regs[] = {
> + {0x0001, XCVR_DIAG_HSCLK_SEL},
> + {0x0009, XCVR_DIAG_PLLDRC_CTRL}
> +};
> +
> +static struct cdns_torrent_vals pcie_dp_link_cmn_vals = {
> + .reg_pairs = pcie_dp_link_cmn_regs,
> + .num_regs = ARRAY_SIZE(pcie_dp_link_cmn_regs),
> +};
> +
> +static struct cdns_torrent_vals pcie_dp_xcvr_diag_ln_vals = {
> + .reg_pairs = pcie_dp_xcvr_diag_ln_regs,
> + .num_regs = ARRAY_SIZE(pcie_dp_xcvr_diag_ln_regs),
> +};
> +
> +static struct cdns_torrent_vals dp_pcie_xcvr_diag_ln_vals = {
> + .reg_pairs = dp_pcie_xcvr_diag_ln_regs,
> + .num_regs = ARRAY_SIZE(dp_pcie_xcvr_diag_ln_regs),
> +};
> +
> +/* DP Multilink, 100 MHz Ref clk, no SSC */
> +static struct cdns_reg_pairs dp_100_no_ssc_cmn_regs[] = {
> + {0x007F, CMN_TXPUCAL_TUNE},
> + {0x007F, CMN_TXPDCAL_TUNE}
> +};
> +
> +static struct cdns_reg_pairs dp_100_no_ssc_tx_ln_regs[] = {
> + {0x00FB, TX_PSC_A0},
> + {0x04AA, TX_PSC_A2},
> + {0x04AA, TX_PSC_A3},
> + {0x000F, XCVR_DIAG_BIDI_CTRL}
> +};
> +
> +static struct cdns_reg_pairs dp_100_no_ssc_rx_ln_regs[] = {
> + {0x0000, RX_PSC_A0},
> + {0x0000, RX_PSC_A2},
> + {0x0000, RX_PSC_A3},
> + {0x0000, RX_PSC_CAL},
> + {0x0000, RX_REE_GCSM1_CTRL},
> + {0x0000, RX_REE_GCSM2_CTRL},
> + {0x0000, RX_REE_PERGCSM_CTRL}
> +};
> +
> +static struct cdns_torrent_vals dp_100_no_ssc_cmn_vals = {
> + .reg_pairs = dp_100_no_ssc_cmn_regs,
> + .num_regs = ARRAY_SIZE(dp_100_no_ssc_cmn_regs),
> +};
> +
> +static struct cdns_torrent_vals dp_100_no_ssc_tx_ln_vals = {
> + .reg_pairs = dp_100_no_ssc_tx_ln_regs,
> + .num_regs = ARRAY_SIZE(dp_100_no_ssc_tx_ln_regs),
> +};
> +
> +static struct cdns_torrent_vals dp_100_no_ssc_rx_ln_vals = {
> + .reg_pairs = dp_100_no_ssc_rx_ln_regs,
> + .num_regs = ARRAY_SIZE(dp_100_no_ssc_rx_ln_regs),
> +};
> +
> /* Single DisplayPort(DP) link configuration */
> static struct cdns_reg_pairs sl_dp_link_cmn_regs[] = {
> {0x0000, PHY_PLL_CFG},
> @@ -3514,6 +3585,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_link_cmn_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &pcie_dp_link_cmn_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -3536,6 +3610,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [EXTERNAL_SSC] = &pcie_usb_link_cmn_vals,
> [INTERNAL_SSC] = &pcie_usb_link_cmn_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_dp_link_cmn_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -3595,6 +3672,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_xcvr_diag_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_pcie_xcvr_diag_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -3617,6 +3697,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [EXTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
> [INTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_dp_xcvr_diag_ln_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -3715,6 +3798,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_cmn_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -3737,6 +3823,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [EXTERNAL_SSC] = &pcie_100_no_ssc_cmn_vals,
> [INTERNAL_SSC] = &pcie_100_int_ssc_cmn_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = NULL,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -3812,6 +3901,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_tx_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -3834,6 +3926,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [EXTERNAL_SSC] = NULL,
> [INTERNAL_SSC] = NULL,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = NULL,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -3909,6 +4004,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_rx_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -3931,6 +4029,9 @@ static const struct cdns_torrent_data cdns_map_torrent = {
> [EXTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> [INTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -3996,6 +4097,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_link_cmn_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &pcie_dp_link_cmn_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -4018,6 +4122,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [EXTERNAL_SSC] = &pcie_usb_link_cmn_vals,
> [INTERNAL_SSC] = &pcie_usb_link_cmn_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_dp_link_cmn_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -4077,6 +4184,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_xcvr_diag_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_pcie_xcvr_diag_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -4099,6 +4209,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [EXTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
> [INTERNAL_SSC] = &pcie_usb_xcvr_diag_ln_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_dp_xcvr_diag_ln_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -4197,6 +4310,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_cmn_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_cmn_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -4219,6 +4335,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [EXTERNAL_SSC] = &pcie_100_no_ssc_cmn_vals,
> [INTERNAL_SSC] = &pcie_100_int_ssc_cmn_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = NULL,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -4294,6 +4413,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_tx_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_tx_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -4316,6 +4438,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [EXTERNAL_SSC] = NULL,
> [INTERNAL_SSC] = NULL,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = NULL,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
> @@ -4391,6 +4516,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [TYPE_NONE] = {
> [NO_SSC] = &sl_dp_100_no_ssc_rx_ln_vals,
> },
> + [TYPE_PCIE] = {
> + [NO_SSC] = &dp_100_no_ssc_rx_ln_vals,
> + },
> },
> [TYPE_PCIE] = {
> [TYPE_NONE] = {
> @@ -4413,6 +4541,9 @@ static const struct cdns_torrent_data ti_j721e_map_torrent = {
> [EXTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> [INTERNAL_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> },
> + [TYPE_DP] = {
> + [NO_SSC] = &pcie_100_no_ssc_rx_ln_vals,
> + },
> },
> [TYPE_SGMII] = {
> [TYPE_NONE] = {
>
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