Hi Sivaprakash,
On 29-07-20, 21:00, Sivaprakash Murugesan wrote:
> ipq8074 has two PCIe ports, One Gen2 and one Gen3 ports.
> Since support for Gen2 phy is already available, add support for
> PCIe Gen3 phy.
>
> Co-developed-by: Selvam Sathappan Periakaruppan <speriaka@xxxxxxxxxxxxxx>
> Signed-off-by: Selvam Sathappan Periakaruppan <speriaka@xxxxxxxxxxxxxx>
> Signed-off-by: Sivaprakash Murugesan <sivaprak@xxxxxxxxxxxxxx>
> ---
> [V2]
> * Addressed review comments from Vinod
> drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h | 139 ++++++++++++++++++++++++
> drivers/phy/qualcomm/phy-qcom-qmp.c | 171 +++++++++++++++++++++++++++++-
> 2 files changed, 308 insertions(+), 2 deletions(-)
> create mode 100644 drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h b/drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h
> new file mode 100644
> index 0000000..812ee75
> --- /dev/null
> +++ b/drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h
> @@ -0,0 +1,139 @@
> +/* SPDX-License-Identifier: GPL-2.0
> + */
> +
> +/*
> + * Copyright (c) 2020, The Linux Foundation. All rights reserved.
> + */
> +
> +#ifndef PHY_QCOM_PCIE_H
Kernel uses this convention..
#ifndef PHY_QCOM_PCIE_H
#define PHY_QCOM_PCIE_H
header contents
#endif
Please update
> +
> +/* QMP V2 PCIE PHY - Found in IPQ8074 gen3 port - QSERDES PLL registers */
> +#define QSERDES_PLL_BG_TIMER 0x00c
> +#define QSERDES_PLL_SSC_PER1 0x01c
> +#define QSERDES_PLL_SSC_PER2 0x020
> +#define QSERDES_PLL_SSC_STEP_SIZE1_MODE0 0x024
> +#define QSERDES_PLL_SSC_STEP_SIZE2_MODE0 0x028
> +#define QSERDES_PLL_SSC_STEP_SIZE1_MODE1 0x02c
> +#define QSERDES_PLL_SSC_STEP_SIZE2_MODE1 0x030
> +#define QSERDES_PLL_BIAS_EN_CLKBUFLR_EN 0x03c
> +#define QSERDES_PLL_CLK_ENABLE1 0x040
> +#define QSERDES_PLL_SYS_CLK_CTRL 0x044
> +#define QSERDES_PLL_SYSCLK_BUF_ENABLE 0x048
> +#define QSERDES_PLL_PLL_IVCO 0x050
> +#define QSERDES_PLL_LOCK_CMP1_MODE0 0x054
> +#define QSERDES_PLL_LOCK_CMP2_MODE0 0x058
> +#define QSERDES_PLL_LOCK_CMP1_MODE1 0x060
> +#define QSERDES_PLL_LOCK_CMP2_MODE1 0x064
> +#define QSERDES_PLL_BG_TRIM 0x074
> +#define QSERDES_PLL_CLK_EP_DIV_MODE0 0x078
> +#define QSERDES_PLL_CLK_EP_DIV_MODE1 0x07c
> +#define QSERDES_PLL_CP_CTRL_MODE0 0x080
> +#define QSERDES_PLL_CP_CTRL_MODE1 0x084
> +#define QSERDES_PLL_PLL_RCTRL_MODE0 0x088
> +#define QSERDES_PLL_PLL_RCTRL_MODE1 0x08C
why tab here instead of single space in others?
> static const struct qmp_phy_cfg sdm845_qmp_pciephy_cfg = {
> .type = PHY_TYPE_PCIE,
> .nlanes = 1,
> @@ -3024,8 +3181,15 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
>
> init.ops = &clk_fixed_rate_ops;
>
> - /* controllers using QMP phys use 125MHz pipe clock interface */
> - fixed->fixed_rate = 125000000;
> + /*
> + * controllers using QMP phys use 125MHz pipe clock interface unless
> + * other frequency is specified in dts
> + */
> + ret = of_property_read_u32(np, "clock-output-rate",
> + (u32 *)&fixed->fixed_rate);
why this cast?
--
~Vinod
