linux-kernel - Re: [PATCH v1 3/5] phy: qcom-qmp-pcie: add endpoint support for sa8775p

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Message-ID: <20230921083901.GC2891@thinkpad>
Date:   Thu, 21 Sep 2023 10:39:01 +0200
From:   Manivannan Sadhasivam <mani@...nel.org>
To:     Mrinmay Sarkar <quic_msarkar@...cinc.com>
Cc:     agross@...nel.org, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        konrad.dybcio@...aro.org, quic_shazhuss@...cinc.com,
        quic_nitegupt@...cinc.com, quic_ramkri@...cinc.com,
        quic_nayiluri@...cinc.com, quic_krichai@...cinc.com,
        quic_vbadigan@...cinc.com, quic_parass@...cinc.com,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mhi@...ts.linux.dev,
        linux-phy@...ts.infradead.org
Subject: Re: [PATCH v1 3/5] phy: qcom-qmp-pcie: add endpoint support for
 sa8775p

On Wed, Sep 20, 2023 at 07:25:10PM +0530, Mrinmay Sarkar wrote:
> Add support for dual lane end point mode PHY found on sa8755p platform.
> 
> Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-pcie.c           | 41 ++++++++++++++++++++++
>  drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5.h         |  2 ++
>  drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v5.h |  1 +
>  3 files changed, 44 insertions(+)
> 
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> index a63ca74..351047c 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
> @@ -2147,6 +2147,38 @@ static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x4_pcie_rc_serdes_alt_tbl[]
>  	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_SELECT, 0x34),
>  };
>  
> +static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl[] = {
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BG_TIMER, 0x02),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYS_CLK_CTRL, 0x07),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x27),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x0a),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x17),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE1, 0x19),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x00),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x03),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_EN_SEL, 0x00),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE0, 0xfb),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE0, 0x01),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE1, 0xfb),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE1, 0x01),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CMN_MODE, 0x14),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE0, 0xff),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x04),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE1, 0xff),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE1, 0x09),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE0, 0x19),
> +	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE1, 0x28),
> +};
> +
> +static const struct qmp_phy_init_tbl sa8775p_qmp_gen4_pcie_ep_pcs_misc_tbl[] = {
> +	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_PCIE_OSC_DTCT_MODE2_CONFIG5, 0x08),
> +};
> +
> +static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl[] = {
> +	QMP_PHY_INIT_CFG(QPHY_V5_PCS_INSIG_MX_CTRL7, 0x00),
> +	QMP_PHY_INIT_CFG(QPHY_V5_PCS_INSIG_SW_CTRL7, 0x00),
> +};
> +
>  struct qmp_pcie_offsets {
>  	u16 serdes;
>  	u16 pcs;
> @@ -3043,6 +3075,15 @@ static const struct qmp_phy_cfg sa8775p_qmp_gen4x2_pciephy_cfg = {
>  		.pcs_misc_num	= ARRAY_SIZE(sa8775p_qmp_gen4_pcie_rc_pcs_misc_tbl),
>  	},
>  
> +	.tbls_ep = &(const struct qmp_phy_cfg_tbls) {
> +		.serdes		= sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl,
> +		.serdes_num	= ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl),
> +		.pcs_misc	= sa8775p_qmp_gen4_pcie_ep_pcs_misc_tbl,
> +		.pcs_misc_num	= ARRAY_SIZE(sa8775p_qmp_gen4_pcie_ep_pcs_misc_tbl),
> +		.pcs		= sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl,
> +		.pcs_num	= ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl),
> +	},
> +
>  	.reset_list		= sdm845_pciephy_reset_l,
>  	.num_resets		= ARRAY_SIZE(sdm845_pciephy_reset_l),
>  	.vreg_list		= qmp_phy_vreg_l,
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5.h
> index 36cc80b..2b33dc7 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5.h
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5.h
> @@ -30,5 +30,7 @@
>  #define QPHY_V5_PCS_EQ_CONFIG2				0x1e0
>  #define QPHY_V5_PCS_EQ_CONFIG3				0x1e4
>  #define QPHY_V5_PCS_EQ_CONFIG5				0x1ec
> +#define QPHY_V5_PCS_INSIG_MX_CTRL7			0x07c
> +#define QPHY_V5_PCS_INSIG_SW_CTRL7			0x060

Sort the defines please, here and below.

- Mani

>  
>  #endif
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v5.h b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v5.h
> index c8afdf7..ad587c8 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v5.h
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v5.h
> @@ -120,5 +120,6 @@
>  #define QSERDES_V5_COM_BIN_VCOCAL_CMP_CODE2_MODE1	0x1b8
>  #define QSERDES_V5_COM_BIN_VCOCAL_HSCLK_SEL		0x1bc
>  #define QSERDES_V5_COM_RESERVED_1			0x1c0
> +#define QSERDES_V5_COM_PLL_CMN_MODE			0x1a0
>  
>  #endif
> -- 
> 2.7.4
> 

-- 
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