Re: [PATCH V3 5/8] memory: tegra: Add EMC scaling support code for Tegra210

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10.05.2019 11:47, Joseph Lo пишет:
> This patch adds the required APIs and variables for the EMC scaling
> sequence code on Tegra210.
> 
> Based on the work of Peter De Schrijver <pdeschrijver@xxxxxxxxxx>.
> 
> Signed-off-by: Joseph Lo <josephl@xxxxxxxxxx>
> ---

> +
> +void do_clock_change(struct tegra_emc *emc, u32 clksrc)
> +{
> +	int err;
> +
> +	mc_readl(emc->mc, MC_EMEM_ADR_CFG);
> +	emc_readl(emc, EMC_INTSTATUS);
> +
> +	tegra210_clk_emc_update_setting(clksrc);
> +
> +	err = wait_for_update(emc, EMC_INTSTATUS,
> +			      EMC_INTSTATUS_CLKCHANGE_COMPLETE, true, REG_EMC);
> +	if (err) {
> +		pr_err("%s: clock change completion error: %d", __func__, err);
> +		WARN_ON(1);
> +	}

Ether WARN(err, ...) or dev_warn, or just dev_err.

-- 
Dmitry



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