linux-kernel - Re: [PATCH v8 5/7] ASoC: qcom: Add support for lpass hdmi driver

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Date:   Wed, 30 Sep 2020 16:27:10 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Srinivasa Rao Mandadapu <srivasam@...eaurora.org>,
        agross@...nel.org, bjorn.andersson@...aro.org, lgirdwood@...il.com,
        broonie@...nel.org, robh+dt@...nel.org, plai@...eaurora.org,
        bgoswami@...eaurora.org, perex@...ex.cz, tiwai@...e.com,
        rohitkr@...eaurora.org, linux-arm-msm@...r.kernel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     V Sujith Kumar Reddy <vsujithk@...eaurora.org>
Subject: Re: [PATCH v8 5/7] ASoC: qcom: Add support for lpass hdmi driver



On 30/09/2020 07:39, Srinivasa Rao Mandadapu wrote:
> +}
> +
> +static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
> +{
> +	return true;
> +}

I did ask this question in multiple reviews, but never got an answer!
Are all the dp/hdmi port register range really volatile!?



--srini
> +
> +struct regmap_config lpass_hdmi_regmap_config = {
> +	.reg_bits = 32,
> +	.reg_stride = 4,
> +	.val_bits = 32,
> +	.writeable_reg = lpass_hdmi_regmap_writeable,
> +	.readable_reg = lpass_hdmi_regmap_readable,
> +	.volatile_reg = lpass_hdmi_regmap_volatile,