On 09/21/2017 11:30 PM, Jean-Jacques Hiblot wrote: > From: Kishon Vijay Abraham I <kis...@ti.com> > > Add a new function to parse host controller dt node and > set mmc_config. This function can be used by mmc controller > drivers to set the generic mmc_config. > This function can be extended to set other UHS mode caps > once UHS mode support is added. > > Signed-off-by: Kishon Vijay Abraham I <kis...@ti.com> > Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com> > --- > drivers/mmc/mmc-uclass.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ > include/mmc.h | 1 + > 2 files changed, 47 insertions(+) > > diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c > index 7856e0a..e30cde7 100644 > --- a/drivers/mmc/mmc-uclass.c > +++ b/drivers/mmc/mmc-uclass.c > @@ -120,6 +120,52 @@ int mmc_execute_tuning(struct mmc *mmc, uint opcode) > return dm_mmc_execute_tuning(mmc->dev, opcode); > } > > +int mmc_of_parse(const void *fdt, int node, struct mmc_config *cfg) > +{ > + int val; > + > + val = fdtdec_get_int(fdt, node, "bus-width", 1); > + > + switch (val) { > + case 0x8: > + cfg->host_caps |= MMC_MODE_8BIT; > + /* fall through */ > + case 0x4: > + cfg->host_caps |= MMC_MODE_4BIT; > + /* fall through */ > + case 0x1: > + cfg->host_caps |= MMC_MODE_1BIT; > + break; > + default: > + printf("error: %s invalid bus-width property %d\n", > + fdt_get_name(fdt, node, NULL), val);
I guess it can be set to 1-bit by default and just display message about invalid bus-width property. > + return -ENOENT; > + } > + > + cfg->f_max = fdtdec_get_int(fdt, node, "max-frequency", 52000000); > + > + if (fdtdec_get_bool(fdt, node, "cap-sd-highspeed")) > + cfg->host_caps |= MMC_CAP(SD_HS); > + if (fdtdec_get_bool(fdt, node, "cap-mmc-highspeed")) > + cfg->host_caps |= MMC_CAP(MMC_HS); > + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr12")) > + cfg->host_caps |= MMC_CAP(UHS_SDR12); > + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr25")) > + cfg->host_caps |= MMC_CAP(UHS_SDR25); > + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr50")) > + cfg->host_caps |= MMC_CAP(UHS_SDR50); > + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr104")) > + cfg->host_caps |= MMC_CAP(UHS_SDR104); > + if (fdtdec_get_bool(fdt, node, "sd-uhs-ddr50")) > + cfg->host_caps |= MMC_CAP(UHS_DDR50); > + if (fdtdec_get_bool(fdt, node, "mmc-ddr-1_8v")) > + cfg->host_caps |= MMC_CAP(MMC_DDR_52); > + if (fdtdec_get_bool(fdt, node, "mmc-hs200-1_8v")) > + cfg->host_caps |= MMC_CAP(MMC_HS_200); Don't need to check about 1.2v? > + > + return 0; > +} > + > struct mmc *mmc_get_mmc_dev(struct udevice *dev) > { > struct mmc_uclass_priv *upriv; > diff --git a/include/mmc.h b/include/mmc.h > index 79be6b4..6230a32 100644 > --- a/include/mmc.h > +++ b/include/mmc.h > @@ -651,6 +651,7 @@ int mmc_unbind(struct udevice *dev); > int mmc_initialize(bd_t *bis); > int mmc_init(struct mmc *mmc); > int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error); > +int mmc_of_parse(const void *fdt, int node, struct mmc_config *cfg); > int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size); > > /** > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot