linux-kernel - Re: [PATCH v2 7/8] Add debug log info to vfe block init and set clock rate

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Date: Mon, 24 Jun 2024 11:15:36 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: gchan9527@...il.com, Robert Foss <rfoss@...nel.org>,
 Todor Tomov <todor.too@...il.com>, Mauro Carvalho Chehab
 <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 7/8] Add debug log info to vfe block init and set clock
 rate

On 24/06/2024 00:22, George Chan via B4 Relay wrote:
> From: George Chan <gchan9527@...il.com>
> 
> Print out missing clock's name when doing msm_vfe_subdev_init().
> Also print out min clock rate required at vfe_set_clock_rates().
> 
> Signed-off-by: George Chan <gchan9527@...il.com>
> ---
>   drivers/media/platform/qcom/camss/camss-vfe.c | 7 +++++--
>   1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
> index 05fa1adc1661..fbbf38755c0e 100644
> --- a/drivers/media/platform/qcom/camss/camss-vfe.c
> +++ b/drivers/media/platform/qcom/camss/camss-vfe.c
> @@ -579,7 +579,8 @@ static int vfe_set_clock_rates(struct vfe_device *vfe)
>   
>   			if (j == clock->nfreqs) {
>   				dev_err(dev,
> -					"Pixel clock is too high for VFE");
> +					"Pixel clock(%s) is too high for VFE, at least set to %lld",
> +					 clock->name, min_rate);

Pixel clock %lld Hz is too high for clock %s
>   				return -EINVAL;
>   			}
>   
> @@ -1452,8 +1453,10 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
>   		struct camss_clock *clock = &vfe->clock[i];
>   
>   		clock->clk = devm_clk_get(dev, res->clock[i]);
> -		if (IS_ERR(clock->clk))
> +		if (IS_ERR(clock->clk)) {
> +			dev_err(dev, "missing clk %s", res->clock[i]);
>   			return PTR_ERR(clock->clk);
> +		}
>   
>   		clock->name = res->clock[i];
>   
> 

A bit inconsistent with the messages

stick to "clock %s"

---
bod