Hi Andy,
Thanks for your comments.
On Mon, 5 Dec 2022 at 12:54, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote:
>
> On Mon, Dec 5, 2022 at 10:54 AM Tomer Maimon <tmaimon77@xxxxxxxxx> wrote:
> >
> > Add Nuvoton NPCM BMC sdhci-pltfm controller driver.
>
> Thank you for an update, my comments below.
>
> ...
>
> > +config MMC_SDHCI_NPCM
>
> > config MMC_SDHCI_IPROC
>
> Perhaps after IPROC?
Will be done in the next version.
>
> ...
>
> > @@ -97,6 +97,7 @@ obj-$(CONFIG_MMC_SDHCI_MICROCHIP_PIC32) += sdhci-pic32.o
> > obj-$(CONFIG_MMC_SDHCI_BRCMSTB) += sdhci-brcmstb.o
> > obj-$(CONFIG_MMC_SDHCI_OMAP) += sdhci-omap.o
> > obj-$(CONFIG_MMC_SDHCI_SPRD) += sdhci-sprd.o
> > +obj-$(CONFIG_MMC_SDHCI_NPCM) += sdhci-npcm.o
>
> Perhaps after IPROC? (There is a group of platform drivers slightly
> below than here)
Will be done in the next version.
>
> > obj-$(CONFIG_MMC_CQHCI) += cqhci.o
>
> ...
>
> > +#include <linux/clk.h>
> > +#include <linux/err.h>
> > +#include <linux/io.h>
> > +#include <linux/mmc/host.h>
> > +#include <linux/mmc/mmc.h>
> > +#include <linux/module.h>
>
> I guess platform_device.h is missing here.
Build and work without platform_device.h, do I need it for module use?
>
> ...
>
> > +static int npcm_sdhci_probe(struct platform_device *pdev)
> > +{
> > + struct sdhci_pltfm_host *pltfm_host;
> > + struct sdhci_host *host;
> > + u32 caps;
> > + int ret;
> > +
> > + host = sdhci_pltfm_init(pdev, &npcm_sdhci_pdata, 0);
> > + if (IS_ERR(host))
> > + return PTR_ERR(host);
> > +
> > + pltfm_host = sdhci_priv(host);
>
> > + pltfm_host->clk = devm_clk_get_optional(&pdev->dev, NULL);
>
> You can't mix devm with non-devm in this way.
Can you explain what you mean You can't mix devm with non-devm in this
way, where is the mix?
In version 1 used devm_clk_get, is it problematic?
>
> > + if (IS_ERR(pltfm_host->clk))
> > + return PTR_ERR(pltfm_host->clk);
> > +
> > + ret = clk_prepare_enable(pltfm_host->clk);
> > + if (ret)
> > + return ret;
> > +
> > + caps = sdhci_readl(host, SDHCI_CAPABILITIES);
> > + if (caps & SDHCI_CAN_DO_8BIT)
> > + host->mmc->caps |= MMC_CAP_8_BIT_DATA;
> > +
> > + ret = mmc_of_parse(host->mmc);
> > + if (ret)
> > + goto err_sdhci_add;
> > +
> > + ret = sdhci_add_host(host);
> > + if (ret)
> > + goto err_sdhci_add;
>
> Why can't you use sdhci_pltfm_register()?
two things are missing in sdhci_pltfm_register
1. clock.
2. Adding SDHCI_CAN_DO_8BIT capability according the eMMC capabilities.
>
> > + return 0;
> > +
> > +err_sdhci_add:
> > + clk_disable_unprepare(pltfm_host->clk);
> > + sdhci_pltfm_free(pdev);
> > + return ret;
> > +}
>
> Missing ->remove() due to above.
Will check
>
> Have you tried to compile as a module and then remove and insert it
> several times?
will try
>
> --
> With Best Regards,
> Andy Shevchenko
Best regards,
Tomer
