On Wed, 13 May 2020 at 12:26, Jisheng Zhang <jisheng.zh...@synaptics.com> wrote:
>
> We need a different set_uhs_signaling implementation for
> MMC_TIMING_MMC_HS and MMC_TIMING_MMC_HS400.
>
> Signed-off-by: Jisheng Zhang <jisheng.zh...@synaptics.com>
Applied for next, thanks!
Kind regards
Uffe
> ---
> drivers/mmc/host/sdhci-of-dwcmshc.c | 31 ++++++++++++++++++++++++++++-
> 1 file changed, 30 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c
> b/drivers/mmc/host/sdhci-of-dwcmshc.c
> index a5137845a1c7..a9ed0e006e06 100644
> --- a/drivers/mmc/host/sdhci-of-dwcmshc.c
> +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
> @@ -16,6 +16,9 @@
>
> #include "sdhci-pltfm.h"
>
> +/* DWCMSHC specific Mode Select value */
> +#define DWCMSHC_CTRL_HS400 0x7
> +
> #define BOUNDARY_OK(addr, len) \
> ((addr | (SZ_128M - 1)) == ((addr + len - 1) | (SZ_128M - 1)))
>
> @@ -46,10 +49,36 @@ static void dwcmshc_adma_write_desc(struct sdhci_host
> *host, void **desc,
> sdhci_adma_write_desc(host, desc, addr, len, cmd);
> }
>
> +static void dwcmshc_set_uhs_signaling(struct sdhci_host *host,
> + unsigned int timing)
> +{
> + u16 ctrl_2;
> +
> + ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
> + /* Select Bus Speed Mode for host */
> + ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
> + if ((timing == MMC_TIMING_MMC_HS200) ||
> + (timing == MMC_TIMING_UHS_SDR104))
> + ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
> + else if (timing == MMC_TIMING_UHS_SDR12)
> + ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
> + else if ((timing == MMC_TIMING_UHS_SDR25) ||
> + (timing == MMC_TIMING_MMC_HS))
> + ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
> + else if (timing == MMC_TIMING_UHS_SDR50)
> + ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
> + else if ((timing == MMC_TIMING_UHS_DDR50) ||
> + (timing == MMC_TIMING_MMC_DDR52))
> + ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
> + else if (timing == MMC_TIMING_MMC_HS400)
> + ctrl_2 |= DWCMSHC_CTRL_HS400;
> + sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
> +}
> +
> static const struct sdhci_ops sdhci_dwcmshc_ops = {
> .set_clock = sdhci_set_clock,
> .set_bus_width = sdhci_set_bus_width,
> - .set_uhs_signaling = sdhci_set_uhs_signaling,
> + .set_uhs_signaling = dwcmshc_set_uhs_signaling,
> .get_max_clock = sdhci_pltfm_clk_get_max_clock,
> .reset = sdhci_reset,
> .adma_write_desc = dwcmshc_adma_write_desc,
> --
> 2.26.2
>
