Subject: Re: [PATCH v6 09/14] memory: tegra: Add EMC scaling support code for Tegra210

From: Thierry Reding <[email-masked]>
Date: Tue, 14 Apr 2020 16:45:25 +0200

On Thu, Apr 09, 2020 at 10:00:13PM +0300, Dmitry Osipenko wrote:
> 09.04.2020 20:52, Thierry Reding пишет:
> ...
> > +static void tegra210_emc_debugfs_init(struct tegra210_emc *emc)
> > +{
> > +	struct device *dev = emc->dev;
> > +	unsigned int i;
> > +	int err;
> > +
> > +	emc->debugfs.min_rate = ULONG_MAX;
> > +	emc->debugfs.max_rate = 0;
> > +
> > +	for (i = 0; i < emc->num_timings; i++) {
> > +		if (emc->timings[i].rate * 1000UL < emc->debugfs.min_rate)
> > +			emc->debugfs.min_rate = emc->timings[i].rate * 1000UL;
> > +
> > +		if (emc->timings[i].rate * 1000UL > emc->debugfs.max_rate)
> > +			emc->debugfs.max_rate = emc->timings[i].rate * 1000UL;
> > +	}
> > +
> > +	if (!emc->num_timings) {
> > +		emc->debugfs.min_rate = clk_get_rate(emc->clk);
> > +		emc->debugfs.max_rate = emc->debugfs.min_rate;
> > +	}
> > +
> > +	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
> > +				 emc->debugfs.max_rate);
> > +	if (err < 0) {
> > +		dev_err(dev, "failed to set rate range [%lu-%lu] for %pC\n",
> > +			emc->debugfs.min_rate, emc->debugfs.max_rate,
> > +			emc->clk);
> > +		return;
> > +	}
> > +
> > +	emc->debugfs.root = debugfs_create_dir("emc", NULL);
> > +	if (!emc->debugfs.root) {
> > +		dev_err(dev, "failed to create debugfs directory\n");
> > +		return;
> > +	}
> > +
> > +	debugfs_create_file("available_rates", S_IRUGO, emc->debugfs.root, emc,
> > +			    &tegra210_emc_debug_available_rates_fops);
> > +	debugfs_create_file("min_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
> > +			    emc, &tegra210_emc_debug_min_rate_fops);
> > +	debugfs_create_file("max_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
> > +			    emc, &tegra210_emc_debug_max_rate_fops);
> 
> I assume you used the checkpatch before sending the patches, no?

I have a pre-commit hook that runs checkpatch, but for some reason it
was disabled. Fixed these to be numeric now.

> I sent out a patch recently to make the permissions readable, please
> take a look if you haven't seen it yet.
> 
> https://patchwork.ozlabs.org/patch/1254301/

I've applied this now.

Thierry
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