* (C) Copyright 2009 SAMSUNG Electronics
* Minkyu Kang <mk7.kang@samsung.com>
* Jaehoon Chung <jh80.chung@samsung.com>
- * Portions Copyright 2011-2013 NVIDIA Corporation
+ * Portions Copyright 2011-2016 NVIDIA Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <bouncebuf.h>
#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <mmc.h>
#include <asm/gpio.h>
#include <asm/io.h>
-#include <asm/arch/clock.h>
-#include <asm/arch-tegra/clk_rst.h>
-#include <asm/arch-tegra/mmc.h>
#include <asm/arch-tegra/tegra_mmc.h>
-#include <mmc.h>
DECLARE_GLOBAL_DATA_PTR;
-struct mmc_host mmc_host[CONFIG_SYS_MMC_MAX_DEVICE];
+struct tegra_mmc_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+};
-#ifndef CONFIG_OF_CONTROL
-#error "Please enable device tree support to use this driver"
-#endif
+struct tegra_mmc_priv {
+ struct tegra_mmc *reg;
+ struct reset_ctl reset_ctl;
+ struct clk clk;
+ struct gpio_desc cd_gpio; /* Change Detect GPIO */
+ struct gpio_desc pwr_gpio; /* Power GPIO */
+ struct gpio_desc wp_gpio; /* Write Protect GPIO */
+ unsigned int version; /* SDHCI spec. version */
+ unsigned int clock; /* Current clock (MHz) */
+};
-static void mmc_set_power(struct mmc_host *host, unsigned short power)
+static void tegra_mmc_set_power(struct tegra_mmc_priv *priv,
+ unsigned short power)
{
u8 pwr = 0;
debug("%s: power = %x\n", __func__, power);
debug("%s: pwr = %X\n", __func__, pwr);
/* Set the bus voltage first (if any) */
- writeb(pwr, &host->reg->pwrcon);
+ writeb(pwr, &priv->reg->pwrcon);
if (pwr == 0)
return;
/* Now enable bus power */
pwr |= TEGRA_MMC_PWRCTL_SD_BUS_POWER;
- writeb(pwr, &host->reg->pwrcon);
+ writeb(pwr, &priv->reg->pwrcon);
}
-static void mmc_prepare_data(struct mmc_host *host, struct mmc_data *data,
- struct bounce_buffer *bbstate)
+static void tegra_mmc_prepare_data(struct tegra_mmc_priv *priv,
+ struct mmc_data *data,
+ struct bounce_buffer *bbstate)
{
unsigned char ctrl;
bbstate->bounce_buffer, bbstate->user_buffer, data->blocks,
data->blocksize);
- writel((u32)bbstate->bounce_buffer, &host->reg->sysad);
+ writel((u32)(unsigned long)bbstate->bounce_buffer, &priv->reg->sysad);
/*
* DMASEL[4:3]
* 00 = Selects SDMA
* 10 = Selects 32-bit Address ADMA2
* 11 = Selects 64-bit Address ADMA2
*/
- ctrl = readb(&host->reg->hostctl);
+ ctrl = readb(&priv->reg->hostctl);
ctrl &= ~TEGRA_MMC_HOSTCTL_DMASEL_MASK;
ctrl |= TEGRA_MMC_HOSTCTL_DMASEL_SDMA;
- writeb(ctrl, &host->reg->hostctl);
+ writeb(ctrl, &priv->reg->hostctl);
/* We do not handle DMA boundaries, so set it to max (512 KiB) */
- writew((7 << 12) | (data->blocksize & 0xFFF), &host->reg->blksize);
- writew(data->blocks, &host->reg->blkcnt);
+ writew((7 << 12) | (data->blocksize & 0xFFF), &priv->reg->blksize);
+ writew(data->blocks, &priv->reg->blkcnt);
}
-static void mmc_set_transfer_mode(struct mmc_host *host, struct mmc_data *data)
+static void tegra_mmc_set_transfer_mode(struct tegra_mmc_priv *priv,
+ struct mmc_data *data)
{
unsigned short mode;
debug(" mmc_set_transfer_mode called\n");
if (data->flags & MMC_DATA_READ)
mode |= TEGRA_MMC_TRNMOD_DATA_XFER_DIR_SEL_READ;
- writew(mode, &host->reg->trnmod);
+ writew(mode, &priv->reg->trnmod);
}
-static int mmc_wait_inhibit(struct mmc_host *host,
- struct mmc_cmd *cmd,
- struct mmc_data *data,
- unsigned int timeout)
+static int tegra_mmc_wait_inhibit(struct tegra_mmc_priv *priv,
+ struct mmc_cmd *cmd,
+ struct mmc_data *data,
+ unsigned int timeout)
{
/*
* PRNSTS
if ((data == NULL) && (cmd->resp_type & MMC_RSP_BUSY))
mask |= TEGRA_MMC_PRNSTS_CMD_INHIBIT_DAT;
- while (readl(&host->reg->prnsts) & mask) {
+ while (readl(&priv->reg->prnsts) & mask) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
return -1;
return 0;
}
-static int mmc_send_cmd_bounced(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data, struct bounce_buffer *bbstate)
+static int tegra_mmc_send_cmd_bounced(struct udevice *dev, struct mmc_cmd *cmd,
+ struct mmc_data *data,
+ struct bounce_buffer *bbstate)
{
- struct mmc_host *host = mmc->priv;
+ struct tegra_mmc_priv *priv = dev_get_priv(dev);
int flags, i;
int result;
unsigned int mask = 0;
unsigned int retry = 0x100000;
debug(" mmc_send_cmd called\n");
- result = mmc_wait_inhibit(host, cmd, data, 10 /* ms */);
+ result = tegra_mmc_wait_inhibit(priv, cmd, data, 10 /* ms */);
if (result < 0)
return result;
if (data)
- mmc_prepare_data(host, data, bbstate);
+ tegra_mmc_prepare_data(priv, data, bbstate);
debug("cmd->arg: %08x\n", cmd->cmdarg);
- writel(cmd->cmdarg, &host->reg->argument);
+ writel(cmd->cmdarg, &priv->reg->argument);
if (data)
- mmc_set_transfer_mode(host, data);
+ tegra_mmc_set_transfer_mode(priv, data);
if ((cmd->resp_type & MMC_RSP_136) && (cmd->resp_type & MMC_RSP_BUSY))
return -1;
debug("cmd: %d\n", cmd->cmdidx);
- writew((cmd->cmdidx << 8) | flags, &host->reg->cmdreg);
+ writew((cmd->cmdidx << 8) | flags, &priv->reg->cmdreg);
for (i = 0; i < retry; i++) {
- mask = readl(&host->reg->norintsts);
+ mask = readl(&priv->reg->norintsts);
/* Command Complete */
if (mask & TEGRA_MMC_NORINTSTS_CMD_COMPLETE) {
if (!data)
- writel(mask, &host->reg->norintsts);
+ writel(mask, &priv->reg->norintsts);
break;
}
}
if (i == retry) {
printf("%s: waiting for status update\n", __func__);
- writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ writel(mask, &priv->reg->norintsts);
+ return -ETIMEDOUT;
}
if (mask & TEGRA_MMC_NORINTSTS_CMD_TIMEOUT) {
/* Timeout Error */
debug("timeout: %08x cmd %d\n", mask, cmd->cmdidx);
- writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ writel(mask, &priv->reg->norintsts);
+ return -ETIMEDOUT;
} else if (mask & TEGRA_MMC_NORINTSTS_ERR_INTERRUPT) {
/* Error Interrupt */
debug("error: %08x cmd %d\n", mask, cmd->cmdidx);
- writel(mask, &host->reg->norintsts);
+ writel(mask, &priv->reg->norintsts);
return -1;
}
if (cmd->resp_type & MMC_RSP_136) {
/* CRC is stripped so we need to do some shifting. */
for (i = 0; i < 4; i++) {
- unsigned int offset =
- (unsigned int)(&host->reg->rspreg3 - i);
+ unsigned long offset = (unsigned long)
+ (&priv->reg->rspreg3 - i);
cmd->response[i] = readl(offset) << 8;
if (i != 3) {
} else if (cmd->resp_type & MMC_RSP_BUSY) {
for (i = 0; i < retry; i++) {
/* PRNTDATA[23:20] : DAT[3:0] Line Signal */
- if (readl(&host->reg->prnsts)
+ if (readl(&priv->reg->prnsts)
& (1 << 20)) /* DAT[0] */
break;
}
if (i == retry) {
printf("%s: card is still busy\n", __func__);
- writel(mask, &host->reg->norintsts);
- return TIMEOUT;
+ writel(mask, &priv->reg->norintsts);
+ return -ETIMEDOUT;
}
- cmd->response[0] = readl(&host->reg->rspreg0);
+ cmd->response[0] = readl(&priv->reg->rspreg0);
debug("cmd->resp[0]: %08x\n", cmd->response[0]);
} else {
- cmd->response[0] = readl(&host->reg->rspreg0);
+ cmd->response[0] = readl(&priv->reg->rspreg0);
debug("cmd->resp[0]: %08x\n", cmd->response[0]);
}
}
unsigned long start = get_timer(0);
while (1) {
- mask = readl(&host->reg->norintsts);
+ mask = readl(&priv->reg->norintsts);
if (mask & TEGRA_MMC_NORINTSTS_ERR_INTERRUPT) {
/* Error Interrupt */
- writel(mask, &host->reg->norintsts);
+ writel(mask, &priv->reg->norintsts);
printf("%s: error during transfer: 0x%08x\n",
__func__, mask);
return -1;
* DMA Interrupt, restart the transfer where
* it was interrupted.
*/
- unsigned int address = readl(&host->reg->sysad);
+ unsigned int address = readl(&priv->reg->sysad);
debug("DMA end\n");
writel(TEGRA_MMC_NORINTSTS_DMA_INTERRUPT,
- &host->reg->norintsts);
- writel(address, &host->reg->sysad);
+ &priv->reg->norintsts);
+ writel(address, &priv->reg->sysad);
} else if (mask & TEGRA_MMC_NORINTSTS_XFER_COMPLETE) {
/* Transfer Complete */
debug("r/w is done\n");
break;
} else if (get_timer(start) > 8000UL) {
- writel(mask, &host->reg->norintsts);
+ writel(mask, &priv->reg->norintsts);
printf("%s: MMC Timeout\n"
" Interrupt status 0x%08x\n"
" Interrupt status enable 0x%08x\n"
" Interrupt signal enable 0x%08x\n"
" Present status 0x%08x\n",
__func__, mask,
- readl(&host->reg->norintstsen),
- readl(&host->reg->norintsigen),
- readl(&host->reg->prnsts));
+ readl(&priv->reg->norintstsen),
+ readl(&priv->reg->norintsigen),
+ readl(&priv->reg->prnsts));
return -1;
}
}
- writel(mask, &host->reg->norintsts);
+ writel(mask, &priv->reg->norintsts);
}
udelay(1000);
return 0;
}
-static int tegra_mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
- struct mmc_data *data)
+static int tegra_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
+ struct mmc_data *data)
{
void *buf;
unsigned int bbflags;
bounce_buffer_start(&bbstate, buf, len, bbflags);
}
- ret = mmc_send_cmd_bounced(mmc, cmd, data, &bbstate);
+ ret = tegra_mmc_send_cmd_bounced(dev, cmd, data, &bbstate);
if (data)
bounce_buffer_stop(&bbstate);
return ret;
}
-static void mmc_change_clock(struct mmc_host *host, uint clock)
+static void tegra_mmc_change_clock(struct tegra_mmc_priv *priv, uint clock)
{
+ ulong rate;
int div;
unsigned short clk;
unsigned long timeout;
*/
if (clock == 0)
goto out;
- clock_adjust_periph_pll_div(host->mmc_id, CLOCK_ID_PERIPH, clock,
- &div);
+
+ rate = clk_set_rate(&priv->clk, clock);
+ div = (rate + clock - 1) / clock;
debug("div = %d\n", div);
- writew(0, &host->reg->clkcon);
+ writew(0, &priv->reg->clkcon);
/*
* CLKCON
div >>= 1;
clk = ((div << TEGRA_MMC_CLKCON_SDCLK_FREQ_SEL_SHIFT) |
TEGRA_MMC_CLKCON_INTERNAL_CLOCK_ENABLE);
- writew(clk, &host->reg->clkcon);
+ writew(clk, &priv->reg->clkcon);
/* Wait max 10 ms */
timeout = 10;
- while (!(readw(&host->reg->clkcon) &
+ while (!(readw(&priv->reg->clkcon) &
TEGRA_MMC_CLKCON_INTERNAL_CLOCK_STABLE)) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
}
clk |= TEGRA_MMC_CLKCON_SD_CLOCK_ENABLE;
- writew(clk, &host->reg->clkcon);
+ writew(clk, &priv->reg->clkcon);
debug("mmc_change_clock: clkcon = %08X\n", clk);
out:
- host->clock = clock;
+ priv->clock = clock;
}
-static void tegra_mmc_set_ios(struct mmc *mmc)
+static int tegra_mmc_set_ios(struct udevice *dev)
{
- struct mmc_host *host = mmc->priv;
+ struct tegra_mmc_priv *priv = dev_get_priv(dev);
+ struct mmc *mmc = mmc_get_mmc_dev(dev);
unsigned char ctrl;
debug(" mmc_set_ios called\n");
debug("bus_width: %x, clock: %d\n", mmc->bus_width, mmc->clock);
/* Change clock first */
- mmc_change_clock(host, mmc->clock);
+ tegra_mmc_change_clock(priv, mmc->clock);
- ctrl = readb(&host->reg->hostctl);
+ ctrl = readb(&priv->reg->hostctl);
/*
* WIDE8[5]
else if (mmc->bus_width == 4)
ctrl |= (1 << 1);
else
- ctrl &= ~(1 << 1);
+ ctrl &= ~(1 << 1 | 1 << 5);
- writeb(ctrl, &host->reg->hostctl);
+ writeb(ctrl, &priv->reg->hostctl);
debug("mmc_set_ios: hostctl = %08X\n", ctrl);
+
+ return 0;
}
-static void mmc_reset(struct mmc_host *host, struct mmc *mmc)
+static void tegra_mmc_pad_init(struct tegra_mmc_priv *priv)
+{
+#if defined(CONFIG_TEGRA30)
+ u32 val;
+
+ debug("%s: sdmmc address = %08x\n", __func__, (unsigned int)priv->reg);
+
+ /* Set the pad drive strength for SDMMC1 or 3 only */
+ if (priv->reg != (void *)0x78000000 &&
+ priv->reg != (void *)0x78000400) {
+ debug("%s: settings are only valid for SDMMC1/SDMMC3!\n",
+ __func__);
+ return;
+ }
+
+ val = readl(&priv->reg->sdmemcmppadctl);
+ val &= 0xFFFFFFF0;
+ val |= MEMCOMP_PADCTRL_VREF;
+ writel(val, &priv->reg->sdmemcmppadctl);
+
+ val = readl(&priv->reg->autocalcfg);
+ val &= 0xFFFF0000;
+ val |= AUTO_CAL_PU_OFFSET | AUTO_CAL_PD_OFFSET | AUTO_CAL_ENABLED;
+ writel(val, &priv->reg->autocalcfg);
+#endif
+}
+
+static void tegra_mmc_reset(struct tegra_mmc_priv *priv, struct mmc *mmc)
{
unsigned int timeout;
debug(" mmc_reset called\n");
* 1 = reset
* 0 = work
*/
- writeb(TEGRA_MMC_SWRST_SW_RESET_FOR_ALL, &host->reg->swrst);
+ writeb(TEGRA_MMC_SWRST_SW_RESET_FOR_ALL, &priv->reg->swrst);
- host->clock = 0;
+ priv->clock = 0;
/* Wait max 100 ms */
timeout = 100;
/* hw clears the bit when it's done */
- while (readb(&host->reg->swrst) & TEGRA_MMC_SWRST_SW_RESET_FOR_ALL) {
+ while (readb(&priv->reg->swrst) & TEGRA_MMC_SWRST_SW_RESET_FOR_ALL) {
if (timeout == 0) {
printf("%s: timeout error\n", __func__);
return;
}
/* Set SD bus voltage & enable bus power */
- mmc_set_power(host, fls(mmc->cfg->voltages) - 1);
+ tegra_mmc_set_power(priv, fls(mmc->cfg->voltages) - 1);
debug("%s: power control = %02X, host control = %02X\n", __func__,
- readb(&host->reg->pwrcon), readb(&host->reg->hostctl));
+ readb(&priv->reg->pwrcon), readb(&priv->reg->hostctl));
/* Make sure SDIO pads are set up */
- pad_init_mmc(host);
+ tegra_mmc_pad_init(priv);
}
-static int tegra_mmc_core_init(struct mmc *mmc)
+static int tegra_mmc_init(struct udevice *dev)
{
- struct mmc_host *host = mmc->priv;
+ struct tegra_mmc_priv *priv = dev_get_priv(dev);
+ struct mmc *mmc = mmc_get_mmc_dev(dev);
unsigned int mask;
- debug(" mmc_core_init called\n");
+ debug(" tegra_mmc_init called\n");
+
+ tegra_mmc_reset(priv, mmc);
- mmc_reset(host, mmc);
+#if defined(CONFIG_TEGRA124_MMC_DISABLE_EXT_LOOPBACK)
+ /*
+ * Disable the external clock loopback and use the internal one on
+ * SDMMC3 as per the SDMMC_VENDOR_MISC_CNTRL_0 register's SDMMC_SPARE1
+ * bits being set to 0xfffd according to the TRM.
+ *
+ * TODO(marcel.ziswiler@toradex.com): Move to device tree controlled
+ * approach once proper kernel integration made it mainline.
+ */
+ if (priv->reg == (void *)0x700b0400) {
+ mask = readl(&priv->reg->venmiscctl);
+ mask &= ~TEGRA_MMC_MISCON_ENABLE_EXT_LOOPBACK;
+ writel(mask, &priv->reg->venmiscctl);
+ }
+#endif
- host->version = readw(&host->reg->hcver);
- debug("host version = %x\n", host->version);
+ priv->version = readw(&priv->reg->hcver);
+ debug("host version = %x\n", priv->version);
/* mask all */
- writel(0xffffffff, &host->reg->norintstsen);
- writel(0xffffffff, &host->reg->norintsigen);
+ writel(0xffffffff, &priv->reg->norintstsen);
+ writel(0xffffffff, &priv->reg->norintsigen);
- writeb(0xe, &host->reg->timeoutcon); /* TMCLK * 2^27 */
+ writeb(0xe, &priv->reg->timeoutcon); /* TMCLK * 2^27 */
/*
* NORMAL Interrupt Status Enable Register init
* [5] ENSTABUFRDRDY : Buffer Read Ready Status Enable
* [1] ENSTASTANSCMPLT : Transfre Complete Status Enable
* [0] ENSTACMDCMPLT : Command Complete Status Enable
*/
- mask = readl(&host->reg->norintstsen);
+ mask = readl(&priv->reg->norintstsen);
mask &= ~(0xffff);
mask |= (TEGRA_MMC_NORINTSTSEN_CMD_COMPLETE |
TEGRA_MMC_NORINTSTSEN_XFER_COMPLETE |
TEGRA_MMC_NORINTSTSEN_DMA_INTERRUPT |
TEGRA_MMC_NORINTSTSEN_BUFFER_WRITE_READY |
TEGRA_MMC_NORINTSTSEN_BUFFER_READ_READY);
- writel(mask, &host->reg->norintstsen);
+ writel(mask, &priv->reg->norintstsen);
/*
* NORMAL Interrupt Signal Enable Register init
* [1] ENSTACMDCMPLT : Transfer Complete Signal Enable
*/
- mask = readl(&host->reg->norintsigen);
+ mask = readl(&priv->reg->norintsigen);
mask &= ~(0xffff);
mask |= TEGRA_MMC_NORINTSIGEN_XFER_COMPLETE;
- writel(mask, &host->reg->norintsigen);
+ writel(mask, &priv->reg->norintsigen);
return 0;
}
-static int tegra_mmc_getcd(struct mmc *mmc)
+static int tegra_mmc_getcd(struct udevice *dev)
{
- struct mmc_host *host = mmc->priv;
+ struct tegra_mmc_priv *priv = dev_get_priv(dev);
debug("tegra_mmc_getcd called\n");
- if (fdt_gpio_isvalid(&host->cd_gpio))
- return fdtdec_get_gpio(&host->cd_gpio);
+ if (dm_gpio_is_valid(&priv->cd_gpio))
+ return dm_gpio_get_value(&priv->cd_gpio);
return 1;
}
-static const struct mmc_ops tegra_mmc_ops = {
+static const struct dm_mmc_ops tegra_mmc_ops = {
.send_cmd = tegra_mmc_send_cmd,
.set_ios = tegra_mmc_set_ios,
- .init = tegra_mmc_core_init,
- .getcd = tegra_mmc_getcd,
+ .get_cd = tegra_mmc_getcd,
};
-static int do_mmc_init(int dev_index)
+static int tegra_mmc_probe(struct udevice *dev)
{
- struct mmc_host *host;
- char gpusage[12]; /* "SD/MMCn PWR" or "SD/MMCn CD" */
- struct mmc *mmc;
-
- /* DT should have been read & host config filled in */
- host = &mmc_host[dev_index];
- if (!host->enabled)
- return -1;
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct tegra_mmc_plat *plat = dev_get_platdata(dev);
+ struct tegra_mmc_priv *priv = dev_get_priv(dev);
+ struct mmc_config *cfg = &plat->cfg;
+ int bus_width, ret;
- debug(" do_mmc_init: index %d, bus width %d "
- "pwr_gpio %d cd_gpio %d\n",
- dev_index, host->width,
- host->pwr_gpio.gpio, host->cd_gpio.gpio);
+ cfg->name = dev->name;
- host->clock = 0;
- clock_start_periph_pll(host->mmc_id, CLOCK_ID_PERIPH, 20000000);
+ bus_width = dev_read_u32_default(dev, "bus-width", 1);
- if (fdt_gpio_isvalid(&host->pwr_gpio)) {
- sprintf(gpusage, "SD/MMC%d PWR", dev_index);
- gpio_request(host->pwr_gpio.gpio, gpusage);
- gpio_direction_output(host->pwr_gpio.gpio, 1);
- debug(" Power GPIO name = %s\n", host->pwr_gpio.name);
- }
-
- if (fdt_gpio_isvalid(&host->cd_gpio)) {
- sprintf(gpusage, "SD/MMC%d CD", dev_index);
- gpio_request(host->cd_gpio.gpio, gpusage);
- gpio_direction_input(host->cd_gpio.gpio);
- debug(" CD GPIO name = %s\n", host->cd_gpio.name);
- }
-
- memset(&host->cfg, 0, sizeof(host->cfg));
-
- host->cfg.name = "Tegra SD/MMC";
- host->cfg.ops = &tegra_mmc_ops;
-
- host->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
- host->cfg.host_caps = 0;
- if (host->width == 8)
- host->cfg.host_caps |= MMC_MODE_8BIT;
- if (host->width >= 4)
- host->cfg.host_caps |= MMC_MODE_4BIT;
- host->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS | MMC_MODE_HC;
+ cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
+ cfg->host_caps = 0;
+ if (bus_width == 8)
+ cfg->host_caps |= MMC_MODE_8BIT;
+ if (bus_width >= 4)
+ cfg->host_caps |= MMC_MODE_4BIT;
+ cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
/*
* min freq is for card identification, and is the highest
* max freq is highest HS eMMC clock as per the SD/MMC spec
* (actually 52MHz)
*/
- host->cfg.f_min = 375000;
- host->cfg.f_max = 48000000;
-
- host->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
-
- mmc = mmc_create(&host->cfg, host);
- if (mmc == NULL)
- return -1;
+ cfg->f_min = 375000;
+ cfg->f_max = 48000000;
- return 0;
-}
+ cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
-/**
- * Get the host address and peripheral ID for a node.
- *
- * @param blob fdt blob
- * @param node Device index (0-3)
- * @param host Structure to fill in (reg, width, mmc_id)
- */
-static int mmc_get_config(const void *blob, int node, struct mmc_host *host)
-{
- debug("%s: node = %d\n", __func__, node);
-
- host->enabled = fdtdec_get_is_enabled(blob, node);
+ priv->reg = (void *)dev_read_addr(dev);
- host->reg = (struct tegra_mmc *)fdtdec_get_addr(blob, node, "reg");
- if ((fdt_addr_t)host->reg == FDT_ADDR_T_NONE) {
- debug("%s: no sdmmc base reg info found\n", __func__);
- return -FDT_ERR_NOTFOUND;
+ ret = reset_get_by_name(dev, "sdhci", &priv->reset_ctl);
+ if (ret) {
+ debug("reset_get_by_name() failed: %d\n", ret);
+ return ret;
}
-
- host->mmc_id = clock_decode_periph_id(blob, node);
- if (host->mmc_id == PERIPH_ID_NONE) {
- debug("%s: could not decode periph id\n", __func__);
- return -FDT_ERR_NOTFOUND;
+ ret = clk_get_by_index(dev, 0, &priv->clk);
+ if (ret) {
+ debug("clk_get_by_index() failed: %d\n", ret);
+ return ret;
}
- /*
- * NOTE: mmc->bus_width is determined by mmc.c dynamically.
- * TBD: Override it with this value?
- */
- host->width = fdtdec_get_int(blob, node, "bus-width", 0);
- if (!host->width)
- debug("%s: no sdmmc width found\n", __func__);
+ ret = reset_assert(&priv->reset_ctl);
+ if (ret)
+ return ret;
+ ret = clk_enable(&priv->clk);
+ if (ret)
+ return ret;
+ ret = clk_set_rate(&priv->clk, 20000000);
+ if (IS_ERR_VALUE(ret))
+ return ret;
+ ret = reset_deassert(&priv->reset_ctl);
+ if (ret)
+ return ret;
/* These GPIOs are optional */
- fdtdec_decode_gpio(blob, node, "cd-gpios", &host->cd_gpio);
- fdtdec_decode_gpio(blob, node, "wp-gpios", &host->wp_gpio);
- fdtdec_decode_gpio(blob, node, "power-gpios", &host->pwr_gpio);
+ gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
+ gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN);
+ gpio_request_by_name(dev, "power-gpios", 0, &priv->pwr_gpio,
+ GPIOD_IS_OUT);
+ if (dm_gpio_is_valid(&priv->pwr_gpio))
+ dm_gpio_set_value(&priv->pwr_gpio, 1);
- debug("%s: found controller at %p, width = %d, periph_id = %d\n",
- __func__, host->reg, host->width, host->mmc_id);
- return 0;
+ upriv->mmc = &plat->mmc;
+
+ return tegra_mmc_init(dev);
}
-/*
- * Process a list of nodes, adding them to our list of SDMMC ports.
- *
- * @param blob fdt blob
- * @param node_list list of nodes to process (any <=0 are ignored)
- * @param count number of nodes to process
- * @return 0 if ok, -1 on error
- */
-static int process_nodes(const void *blob, int node_list[], int count)
+static int tegra_mmc_bind(struct udevice *dev)
{
- struct mmc_host *host;
- int i, node;
-
- debug("%s: count = %d\n", __func__, count);
-
- /* build mmc_host[] for each controller */
- for (i = 0; i < count; i++) {
- node = node_list[i];
- if (node <= 0)
- continue;
+ struct tegra_mmc_plat *plat = dev_get_platdata(dev);
- host = &mmc_host[i];
- host->id = i;
-
- if (mmc_get_config(blob, node, host)) {
- printf("%s: failed to decode dev %d\n", __func__, i);
- return -1;
- }
- do_mmc_init(i);
- }
- return 0;
+ return mmc_bind(dev, &plat->mmc, &plat->cfg);
}
-void tegra_mmc_init(void)
-{
- int node_list[CONFIG_SYS_MMC_MAX_DEVICE], count;
- const void *blob = gd->fdt_blob;
- debug("%s entry\n", __func__);
-
- /* See if any Tegra124 MMC controllers are present */
- count = fdtdec_find_aliases_for_id(blob, "sdhci",
- COMPAT_NVIDIA_TEGRA124_SDMMC, node_list,
- CONFIG_SYS_MMC_MAX_DEVICE);
- debug("%s: count of Tegra124 sdhci nodes is %d\n", __func__, count);
- if (process_nodes(blob, node_list, count)) {
- printf("%s: Error processing T30 mmc node(s)!\n", __func__);
- return;
- }
-
- /* See if any Tegra30 MMC controllers are present */
- count = fdtdec_find_aliases_for_id(blob, "sdhci",
- COMPAT_NVIDIA_TEGRA30_SDMMC, node_list,
- CONFIG_SYS_MMC_MAX_DEVICE);
- debug("%s: count of T30 sdhci nodes is %d\n", __func__, count);
- if (process_nodes(blob, node_list, count)) {
- printf("%s: Error processing T30 mmc node(s)!\n", __func__);
- return;
- }
+static const struct udevice_id tegra_mmc_ids[] = {
+ { .compatible = "nvidia,tegra20-sdhci" },
+ { .compatible = "nvidia,tegra30-sdhci" },
+ { .compatible = "nvidia,tegra114-sdhci" },
+ { .compatible = "nvidia,tegra124-sdhci" },
+ { .compatible = "nvidia,tegra210-sdhci" },
+ { .compatible = "nvidia,tegra186-sdhci" },
+ { }
+};
- /* Now look for any Tegra20 MMC controllers */
- count = fdtdec_find_aliases_for_id(blob, "sdhci",
- COMPAT_NVIDIA_TEGRA20_SDMMC, node_list,
- CONFIG_SYS_MMC_MAX_DEVICE);
- debug("%s: count of T20 sdhci nodes is %d\n", __func__, count);
- if (process_nodes(blob, node_list, count)) {
- printf("%s: Error processing T20 mmc node(s)!\n", __func__);
- return;
- }
-}
+U_BOOT_DRIVER(tegra_mmc_drv) = {
+ .name = "tegra_mmc",
+ .id = UCLASS_MMC,
+ .of_match = tegra_mmc_ids,
+ .bind = tegra_mmc_bind,
+ .probe = tegra_mmc_probe,
+ .ops = &tegra_mmc_ops,
+ .platdata_auto_alloc_size = sizeof(struct tegra_mmc_plat),
+ .priv_auto_alloc_size = sizeof(struct tegra_mmc_priv),
+};
projects / people / ms / u-boot.git / blobdiff