[...]
> + switch (ios->signal_voltage) {
> + case MMC_SIGNAL_VOLTAGE_330:
> + val &= ~ESDHC_VOLT_SEL;
> + sdhci_writel(host, val, ESDHC_PROCTL);
> + return 0;
> + case MMC_SIGNAL_VOLTAGE_180:
> + scfg_node = of_find_matching_node(NULL, scfg_device_ids);
> + if (scfg_node)
> + scfg_base = of_iomap(scfg_node, 0);
Why don't you do this at probe time instead of every time you do the
voltage switch?
Never mind at this point, I have queued this up for 4.12, however feel
free to send a new patch on top.
> + if (scfg_base) {
> + sdhciovselcr = SDHCIOVSELCR_TGLEN |
> + SDHCIOVSELCR_VSELVAL;
> + iowrite32be(sdhciovselcr,
> + scfg_base + SCFG_SDHCIOVSELCR);
> +
> + val |= ESDHC_VOLT_SEL;
> + sdhci_writel(host, val, ESDHC_PROCTL);
> + mdelay(5);
> +
> + sdhciovselcr = SDHCIOVSELCR_TGLEN |
> + SDHCIOVSELCR_SDHC_VS;
> + iowrite32be(sdhciovselcr,
> + scfg_base + SCFG_SDHCIOVSELCR);
> + iounmap(scfg_base);
> + } else {
> + val |= ESDHC_VOLT_SEL;
> + sdhci_writel(host, val, ESDHC_PROCTL);
> + }
> + return 0;
> + default:
> + return 0;
> + }
> +}
[...]
Kind regards
Uffe
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