int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int))
{
struct mmc *mmc = NULL;
struct mxsmmc_priv *priv = NULL;
int ret;
const unsigned int mxsmmc_clk_id = mxs_ssp_clock_by_bus(id);
if (!mxs_ssp_bus_id_valid(id))
return -ENODEV;
priv = malloc(sizeof(struct mxsmmc_priv));
if (!priv)
return -ENOMEM;
priv->desc = mxs_dma_desc_alloc();
if (!priv->desc) {
free(priv);
return -ENOMEM;
}
ret = mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + id);
if (ret)
return ret;
priv->mmc_is_wp = wp;
priv->mmc_cd = cd;
priv->id = id;
priv->regs = mxs_ssp_regs_by_bus(id);
priv->cfg.name = "MXS MMC";
priv->cfg.ops = &mxsmmc_ops;
priv->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
MMC_MODE_HS_52MHz | MMC_MODE_HS;
/*
* SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
* SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)),
* CLOCK_DIVIDE has to be an even value from 2 to 254, and
* CLOCK_RATE could be any integer from 0 to 255.
*/
priv->cfg.f_min = 400000;
priv->cfg.f_max = mxc_get_clock(MXC_SSP0_CLK + mxsmmc_clk_id) * 1000 / 2;
priv->cfg.b_max = 0x20;
mmc = mmc_create(&priv->cfg, priv);
if (mmc == NULL) {
mxs_dma_desc_free(priv->desc);
free(priv);
return -ENOMEM;
}
return 0;
}
int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int))
{
struct mmc *mmc = NULL;
struct mxsmmc_priv *priv = NULL;
int ret;
const unsigned int mxsmmc_clk_id = mxs_ssp_clock_by_bus(id);
if (!mxs_ssp_bus_id_valid(id))
return -ENODEV;
mmc = malloc(sizeof(struct mmc));
if (!mmc)
return -ENOMEM;
priv = malloc(sizeof(struct mxsmmc_priv));
if (!priv) {
free(mmc);
return -ENOMEM;
}
priv->desc = mxs_dma_desc_alloc();
if (!priv->desc) {
free(priv);
free(mmc);
return -ENOMEM;
}
ret = mxs_dma_init_channel(MXS_DMA_CHANNEL_AHB_APBH_SSP0 + id);
if (ret)
return ret;
priv->mmc_is_wp = wp;
priv->mmc_cd = cd;
priv->id = id;
priv->regs = mxs_ssp_regs_by_bus(id);
sprintf(mmc->name, "MXS MMC");
mmc->send_cmd = mxsmmc_send_cmd;
mmc->set_ios = mxsmmc_set_ios;
mmc->init = mxsmmc_init;
mmc->getcd = NULL;
mmc->getwp = NULL;
mmc->priv = priv;
mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT |
MMC_MODE_HS_52MHz | MMC_MODE_HS |
MMC_MODE_HC;
/*
* SSPCLK = 480 * 18 / 29 / 1 = 297.731 MHz
* SSP bit rate = SSPCLK / (CLOCK_DIVIDE * (1 + CLOCK_RATE)),
* CLOCK_DIVIDE has to be an even value from 2 to 254, and
* CLOCK_RATE could be any integer from 0 to 255.
*/
mmc->f_min = 400000;
mmc->f_max = mxc_get_clock(MXC_SSP0_CLK + mxsmmc_clk_id) * 1000 / 2;
mmc->b_max = 0x20;
mmc_register(mmc);
return 0;
}
