Re: [PATCH V5 2/4] mmc: sdhci-pci-gli: Set SDR104's clock to 205MHz and enable SSC for GL9767

[Ulf Hansson]

On Thu, 1 Jun 2023 at 03:51, Victor Shih <victorshihgli@xxxxxxxxx> wrote:
>
> From: Victor Shih <victor.shih@xxxxxxxxxxxxxxxxxxx>
>
> Set GL9767 SDR104's clock to 205MHz and enable SSC feature
> depend on register 0x888 BIT(1).
>
> Signed-off-by: Ben Chuang <ben.chuang@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Victor Shih <victor.shih@xxxxxxxxxxxxxxxxxxx>
> Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
> ---
>  drivers/mmc/host/sdhci-pci-gli.c | 135 ++++++++++++++++++++++++++++++-

[...]

> +
> +static void gl9767_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv)
> +{
> +       u32 pll;
> +
> +       gl9767_vhs_write(pdev);
> +
> +       pci_read_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, &pll);
> +       pll &= ~(PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV |
> +                PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV |
> +                PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN);
> +       pll |= FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_LDIV, ldiv) |
> +              FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_PDIV, pdiv) |
> +              FIELD_PREP(PCIE_GLI_9767_SD_PLL_CTL_PLL_DIR_EN, dir);
> +       pci_write_config_dword(pdev, PCIE_GLI_9767_SD_PLL_CTL, pll);
> +
> +       gl9767_vhs_read(pdev);
> +
> +       /* wait for pll stable */
> +       msleep(1);

According to Documentation/timers/timers-howto.rst, this should be
converted into usleep_range instead.

[...]

Other than the minor thing above, this looks good to me!

Kind regards
Uffe