linux-kernel - Re: [PATCH 6/9] phy: qcom-qmp: Add compatible for ipq8074 pcie gen3 qmp phy

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Message-ID: <20200713060425.GC34333@vkoul-mobl>
Date:   Mon, 13 Jul 2020 11:34:25 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Sivaprakash Murugesan <sivaprak@...eaurora.org>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, bhelgaas@...gle.com,
        robh+dt@...nel.org, kishon@...com, mturquette@...libre.com,
        sboyd@...nel.org, svarbanov@...sol.com, lorenzo.pieralisi@....com,
        p.zabel@...gutronix.de, mgautam@...eaurora.org,
        smuthayy@...eaurora.org, varada@...eaurora.org,
        linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org,
        Selvam Sathappan Periakaruppan <speriaka@...eaurora.org>
Subject: Re: [PATCH 6/9] phy: qcom-qmp: Add compatible for ipq8074 pcie gen3
 qmp phy

On 05-07-20, 14:47, Sivaprakash Murugesan wrote:
> ipq8074 has two pcie ports, one gen2 and one gen3 ports. with phy
> support already available for gen2 pcie ports add support for pcie gen3
> port phy.
> 
> Co-developed-by: Selvam Sathappan Periakaruppan <speriaka@...eaurora.org>
> Signed-off-by: Selvam Sathappan Periakaruppan <speriaka@...eaurora.org>
> Signed-off-by: Sivaprakash Murugesan <sivaprak@...eaurora.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h | 137 ++++++++++++++++++++++++
>  drivers/phy/qualcomm/phy-qcom-qmp.c       | 172 +++++++++++++++++++++++++++++-
>  2 files changed, 307 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 000000000000..bb567673d9b5
> --- /dev/null
> +++ b/drivers/phy/qualcomm/phy-qcom-pcie3-qmp.h
> @@ -0,0 +1,137 @@
> +/* SPDX-License-Identifier: GPL-2.0*

Trailing * at the end, it would make sense to split the spdx and
copyright parts to two single lines

> @@ -2550,8 +2707,16 @@ 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);

is this cast required?

> +	if (ret)
> +		fixed->fixed_rate = 125000000;
> +
> +	dev_info(qmp->dev, "fixed freq %lu\n", fixed->fixed_rate);

debug?

-- 
~Vinod