mirror of
https://github.com/AsahiLinux/u-boot
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c689ae044b
This is a straightforward conversion of the old, non-dm driver. It was done in-place as the deadline for non-dm MMC has passed. Previous commits ensured that no board depends on the old, non-dm variant. Tested on a Kirkwood based board with eMMC. Signed-off-by: Harm Berntsen <harm.berntsen@nedap.com> Tested-by: Harm Berntsen <harm.berntsen@nedap.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de> CC: Pantelis Antoniou <panto@antoniou-consulting.com> CC: Stefan Roese <sr@denx.de> CC: Gerald Kerma <drEagle@doukki.net> CC: Simon Glass <sjg@chromium.org> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
497 lines
13 KiB
C
497 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Marvell MMC/SD/SDIO driver
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*
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* (C) Copyright 2012-2014
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* Marvell Semiconductor <www.marvell.com>
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* Written-by: Maen Suleiman, Gerald Kerma
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*/
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#include <common.h>
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#include <errno.h>
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#include <log.h>
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#include <malloc.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <part.h>
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#include <mmc.h>
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#include <asm/io.h>
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#include <asm/arch/cpu.h>
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#include <asm/arch/soc.h>
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#include <mvebu_mmc.h>
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#include <dm/device_compat.h>
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#define MVEBU_TARGET_DRAM 0
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#define TIMEOUT_DELAY 5*CONFIG_SYS_HZ /* wait 5 seconds */
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static inline void *get_regbase(const struct mmc *mmc)
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{
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struct mvebu_mmc_plat *pdata = mmc->priv;
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return pdata->iobase;
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}
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static void mvebu_mmc_write(const struct mmc *mmc, u32 offs, u32 val)
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{
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writel(val, get_regbase(mmc) + (offs));
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}
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static u32 mvebu_mmc_read(const struct mmc *mmc, u32 offs)
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{
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return readl(get_regbase(mmc) + (offs));
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}
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static int mvebu_mmc_setup_data(struct udevice *dev, struct mmc_data *data)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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u32 ctrl_reg;
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dev_dbg(dev, "data %s : blocks=%d blksz=%d\n",
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(data->flags & MMC_DATA_READ) ? "read" : "write",
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data->blocks, data->blocksize);
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/* default to maximum timeout */
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ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
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ctrl_reg |= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
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mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);
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if (data->flags & MMC_DATA_READ) {
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mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->dest & 0xffff);
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mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->dest >> 16);
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} else {
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mvebu_mmc_write(mmc, SDIO_SYS_ADDR_LOW, (u32)data->src & 0xffff);
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mvebu_mmc_write(mmc, SDIO_SYS_ADDR_HI, (u32)data->src >> 16);
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}
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mvebu_mmc_write(mmc, SDIO_BLK_COUNT, data->blocks);
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mvebu_mmc_write(mmc, SDIO_BLK_SIZE, data->blocksize);
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return 0;
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}
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static int mvebu_mmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
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struct mmc_data *data)
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{
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ulong start;
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ushort waittype = 0;
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ushort resptype = 0;
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ushort xfertype = 0;
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ushort resp_indx = 0;
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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dev_dbg(dev, "cmdidx [0x%x] resp_type[0x%x] cmdarg[0x%x]\n",
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cmd->cmdidx, cmd->resp_type, cmd->cmdarg);
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dev_dbg(dev, "cmd %d (hw state 0x%04x)\n",
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cmd->cmdidx, mvebu_mmc_read(mmc, SDIO_HW_STATE));
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/*
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* Hardware weirdness. The FIFO_EMPTY bit of the HW_STATE
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* register is sometimes not set before a while when some
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* "unusual" data block sizes are used (such as with the SWITCH
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* command), even despite the fact that the XFER_DONE interrupt
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* was raised. And if another data transfer starts before
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* this bit comes to good sense (which eventually happens by
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* itself) then the new transfer simply fails with a timeout.
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*/
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if (!(mvebu_mmc_read(mmc, SDIO_HW_STATE) & CMD_FIFO_EMPTY)) {
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ushort hw_state, count = 0;
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start = get_timer(0);
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do {
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hw_state = mvebu_mmc_read(mmc, SDIO_HW_STATE);
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if ((get_timer(0) - start) > TIMEOUT_DELAY) {
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printf("%s : FIFO_EMPTY bit missing\n",
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dev->name);
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break;
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}
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count++;
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} while (!(hw_state & CMD_FIFO_EMPTY));
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dev_dbg(dev, "*** wait for FIFO_EMPTY bit (hw=0x%04x, count=%d, jiffies=%ld)\n",
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hw_state, count, (get_timer(0) - (start)));
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}
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/* Clear status */
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mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
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mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);
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resptype = SDIO_CMD_INDEX(cmd->cmdidx);
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/* Analyzing resptype/xfertype/waittype for the command */
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if (cmd->resp_type & MMC_RSP_BUSY)
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resptype |= SDIO_CMD_RSP_48BUSY;
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else if (cmd->resp_type & MMC_RSP_136)
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resptype |= SDIO_CMD_RSP_136;
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else if (cmd->resp_type & MMC_RSP_PRESENT)
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resptype |= SDIO_CMD_RSP_48;
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else
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resptype |= SDIO_CMD_RSP_NONE;
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if (cmd->resp_type & MMC_RSP_CRC)
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resptype |= SDIO_CMD_CHECK_CMDCRC;
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if (cmd->resp_type & MMC_RSP_OPCODE)
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resptype |= SDIO_CMD_INDX_CHECK;
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if (cmd->resp_type & MMC_RSP_PRESENT) {
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resptype |= SDIO_UNEXPECTED_RESP;
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waittype |= SDIO_NOR_UNEXP_RSP;
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}
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if (data) {
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int err = mvebu_mmc_setup_data(dev, data);
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if (err) {
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dev_dbg(dev, "command DATA error :%x\n", err);
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return err;
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}
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resptype |= SDIO_CMD_DATA_PRESENT | SDIO_CMD_CHECK_DATACRC16;
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xfertype |= SDIO_XFER_MODE_HW_WR_DATA_EN;
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if (data->flags & MMC_DATA_READ) {
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xfertype |= SDIO_XFER_MODE_TO_HOST;
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waittype = SDIO_NOR_DMA_INI;
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} else {
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waittype |= SDIO_NOR_XFER_DONE;
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}
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} else {
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waittype |= SDIO_NOR_CMD_DONE;
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}
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/* Setting cmd arguments */
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mvebu_mmc_write(mmc, SDIO_ARG_LOW, cmd->cmdarg & 0xffff);
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mvebu_mmc_write(mmc, SDIO_ARG_HI, cmd->cmdarg >> 16);
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/* Setting Xfer mode */
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mvebu_mmc_write(mmc, SDIO_XFER_MODE, xfertype);
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/* Sending command */
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mvebu_mmc_write(mmc, SDIO_CMD, resptype);
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start = get_timer(0);
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while (!((mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS)) & waittype)) {
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if (mvebu_mmc_read(mmc, SDIO_NOR_INTR_STATUS) & SDIO_NOR_ERROR) {
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dev_dbg(dev, "error! cmdidx : %d, err reg: %04x\n",
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cmd->cmdidx,
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mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS));
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if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
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(SDIO_ERR_CMD_TIMEOUT | SDIO_ERR_DATA_TIMEOUT)) {
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dev_dbg(dev, "command READ timed out\n");
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return -ETIMEDOUT;
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}
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dev_dbg(dev, "command READ error\n");
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return -ECOMM;
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}
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if ((get_timer(0) - start) > TIMEOUT_DELAY) {
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dev_dbg(dev, "command timed out\n");
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return -ETIMEDOUT;
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}
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}
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/* Handling response */
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if (cmd->resp_type & MMC_RSP_136) {
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uint response[8];
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for (resp_indx = 0; resp_indx < 8; resp_indx++)
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response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));
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cmd->response[0] = ((response[0] & 0x03ff) << 22) |
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((response[1] & 0xffff) << 6) |
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((response[2] & 0xfc00) >> 10);
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cmd->response[1] = ((response[2] & 0x03ff) << 22) |
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((response[3] & 0xffff) << 6) |
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((response[4] & 0xfc00) >> 10);
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cmd->response[2] = ((response[4] & 0x03ff) << 22) |
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((response[5] & 0xffff) << 6) |
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((response[6] & 0xfc00) >> 10);
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cmd->response[3] = ((response[6] & 0x03ff) << 22) |
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((response[7] & 0x3fff) << 8);
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} else if (cmd->resp_type & MMC_RSP_PRESENT) {
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uint response[3];
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for (resp_indx = 0; resp_indx < 3; resp_indx++)
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response[resp_indx] = mvebu_mmc_read(mmc, SDIO_RSP(resp_indx));
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cmd->response[0] = ((response[2] & 0x003f) << (8 - 8)) |
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((response[1] & 0xffff) << (14 - 8)) |
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((response[0] & 0x03ff) << (30 - 8));
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cmd->response[1] = ((response[0] & 0xfc00) >> 10);
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cmd->response[2] = 0;
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cmd->response[3] = 0;
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} else {
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cmd->response[0] = 0;
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cmd->response[1] = 0;
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cmd->response[2] = 0;
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cmd->response[3] = 0;
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}
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dev_dbg(dev, "resp[0x%x] ", cmd->resp_type);
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debug("[0x%x] ", cmd->response[0]);
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debug("[0x%x] ", cmd->response[1]);
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debug("[0x%x] ", cmd->response[2]);
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debug("[0x%x] ", cmd->response[3]);
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debug("\n");
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if (mvebu_mmc_read(mmc, SDIO_ERR_INTR_STATUS) &
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(SDIO_ERR_CMD_TIMEOUT | SDIO_ERR_DATA_TIMEOUT))
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return -ETIMEDOUT;
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return 0;
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}
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static void mvebu_mmc_power_up(struct udevice *dev)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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dev_dbg(dev, "power up\n");
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/* disable interrupts */
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mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
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mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);
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/* SW reset */
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mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);
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mvebu_mmc_write(mmc, SDIO_XFER_MODE, 0);
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/* enable status */
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mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
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mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);
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/* enable interrupts status */
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mvebu_mmc_write(mmc, SDIO_NOR_INTR_STATUS, SDIO_POLL_MASK);
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mvebu_mmc_write(mmc, SDIO_ERR_INTR_STATUS, SDIO_POLL_MASK);
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}
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static void mvebu_mmc_set_clk(struct udevice *dev, unsigned int clock)
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{
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unsigned int m;
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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if (clock == 0) {
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dev_dbg(dev, "clock off\n");
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mvebu_mmc_write(mmc, SDIO_XFER_MODE, SDIO_XFER_MODE_STOP_CLK);
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mvebu_mmc_write(mmc, SDIO_CLK_DIV, MVEBU_MMC_BASE_DIV_MAX);
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} else {
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m = MVEBU_MMC_BASE_FAST_CLOCK/(2*clock) - 1;
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if (m > MVEBU_MMC_BASE_DIV_MAX)
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m = MVEBU_MMC_BASE_DIV_MAX;
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mvebu_mmc_write(mmc, SDIO_CLK_DIV, m & MVEBU_MMC_BASE_DIV_MAX);
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dev_dbg(dev, "clock (%d) div : %d\n", clock, m);
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}
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}
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static void mvebu_mmc_set_bus(struct udevice *dev, unsigned int bus)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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u32 ctrl_reg = 0;
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ctrl_reg = mvebu_mmc_read(mmc, SDIO_HOST_CTRL);
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ctrl_reg &= ~SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;
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switch (bus) {
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case 4:
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ctrl_reg |= SDIO_HOST_CTRL_DATA_WIDTH_4_BITS;
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break;
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case 1:
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default:
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ctrl_reg |= SDIO_HOST_CTRL_DATA_WIDTH_1_BIT;
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}
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/* default transfer mode */
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ctrl_reg |= SDIO_HOST_CTRL_BIG_ENDIAN;
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ctrl_reg &= ~SDIO_HOST_CTRL_LSB_FIRST;
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/* default to maximum timeout */
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ctrl_reg |= SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX);
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ctrl_reg |= SDIO_HOST_CTRL_TMOUT_EN;
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ctrl_reg |= SDIO_HOST_CTRL_PUSH_PULL_EN;
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ctrl_reg |= SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY;
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dev_dbg(dev, "ctrl 0x%04x: %s %s %s\n", ctrl_reg,
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(ctrl_reg & SDIO_HOST_CTRL_PUSH_PULL_EN) ?
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"push-pull" : "open-drain",
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(ctrl_reg & SDIO_HOST_CTRL_DATA_WIDTH_4_BITS) ?
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"4bit-width" : "1bit-width",
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(ctrl_reg & SDIO_HOST_CTRL_HI_SPEED_EN) ?
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"high-speed" : "");
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mvebu_mmc_write(mmc, SDIO_HOST_CTRL, ctrl_reg);
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}
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static int mvebu_mmc_set_ios(struct udevice *dev)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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dev_dbg(dev, "bus[%d] clock[%d]\n",
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mmc->bus_width, mmc->clock);
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mvebu_mmc_set_bus(dev, mmc->bus_width);
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mvebu_mmc_set_clk(dev, mmc->clock);
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return 0;
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}
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/*
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* Set window register.
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*/
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static void mvebu_window_setup(const struct mmc *mmc)
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{
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int i;
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for (i = 0; i < 4; i++) {
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mvebu_mmc_write(mmc, WINDOW_CTRL(i), 0);
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mvebu_mmc_write(mmc, WINDOW_BASE(i), 0);
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}
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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u32 size, base, attrib;
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/* Enable DRAM bank */
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switch (i) {
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case 0:
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attrib = KWCPU_ATTR_DRAM_CS0;
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break;
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case 1:
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attrib = KWCPU_ATTR_DRAM_CS1;
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break;
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case 2:
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attrib = KWCPU_ATTR_DRAM_CS2;
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break;
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case 3:
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attrib = KWCPU_ATTR_DRAM_CS3;
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break;
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default:
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/* invalide bank, disable access */
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attrib = 0;
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break;
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}
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size = gd->bd->bi_dram[i].size;
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base = gd->bd->bi_dram[i].start;
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if (size && attrib) {
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mvebu_mmc_write(mmc, WINDOW_CTRL(i),
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MVCPU_WIN_CTRL_DATA(size,
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MVEBU_TARGET_DRAM,
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attrib,
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MVCPU_WIN_ENABLE));
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} else {
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mvebu_mmc_write(mmc, WINDOW_CTRL(i), MVCPU_WIN_DISABLE);
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}
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mvebu_mmc_write(mmc, WINDOW_BASE(i), base);
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}
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}
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static int mvebu_mmc_initialize(struct udevice *dev)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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struct mmc *mmc = &pdata->mmc;
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dev_dbg(dev, "%s\n", __func__);
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/*
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* Setting host parameters
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* Initial Host Ctrl : Timeout : max , Normal Speed mode,
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* 4-bit data mode, Big Endian, SD memory Card, Push_pull CMD Line
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*/
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mvebu_mmc_write(mmc, SDIO_HOST_CTRL,
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SDIO_HOST_CTRL_TMOUT(SDIO_HOST_CTRL_TMOUT_MAX) |
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SDIO_HOST_CTRL_DATA_WIDTH_4_BITS |
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SDIO_HOST_CTRL_BIG_ENDIAN |
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SDIO_HOST_CTRL_PUSH_PULL_EN |
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SDIO_HOST_CTRL_CARD_TYPE_MEM_ONLY);
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mvebu_mmc_write(mmc, SDIO_CLK_CTRL, 0);
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/* enable status */
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mvebu_mmc_write(mmc, SDIO_NOR_STATUS_EN, SDIO_POLL_MASK);
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mvebu_mmc_write(mmc, SDIO_ERR_STATUS_EN, SDIO_POLL_MASK);
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/* disable interrupts */
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mvebu_mmc_write(mmc, SDIO_NOR_INTR_EN, 0);
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mvebu_mmc_write(mmc, SDIO_ERR_INTR_EN, 0);
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mvebu_window_setup(mmc);
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/* SW reset */
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mvebu_mmc_write(mmc, SDIO_SW_RESET, SDIO_SW_RESET_NOW);
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return 0;
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}
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static int mvebu_mmc_of_to_plat(struct udevice *dev)
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{
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struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
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fdt_addr_t addr;
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addr = dev_read_addr(dev);
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if (addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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pdata->iobase = (void *)addr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mvebu_mmc_probe(struct udevice *dev)
|
|
{
|
|
struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
|
|
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
|
|
struct mmc *mmc = &pdata->mmc;
|
|
struct mmc_config *cfg = &pdata->cfg;
|
|
|
|
cfg->name = dev->name;
|
|
cfg->f_min = MVEBU_MMC_BASE_FAST_CLOCK / MVEBU_MMC_BASE_DIV_MAX;
|
|
cfg->f_max = MVEBU_MMC_CLOCKRATE_MAX;
|
|
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
|
|
cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_HS | MMC_MODE_HS_52MHz;
|
|
cfg->part_type = PART_TYPE_DOS;
|
|
cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
|
|
|
|
mmc->cfg = cfg;
|
|
mmc->priv = pdata;
|
|
mmc->dev = dev;
|
|
upriv->mmc = mmc;
|
|
|
|
mvebu_mmc_power_up(dev);
|
|
mvebu_mmc_initialize(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dm_mmc_ops mvebu_dm_mmc_ops = {
|
|
.send_cmd = mvebu_mmc_send_cmd,
|
|
.set_ios = mvebu_mmc_set_ios,
|
|
};
|
|
|
|
static int mvebu_mmc_bind(struct udevice *dev)
|
|
{
|
|
struct mvebu_mmc_plat *pdata = dev_get_plat(dev);
|
|
|
|
return mmc_bind(dev, &pdata->mmc, &pdata->cfg);
|
|
}
|
|
|
|
static const struct udevice_id mvebu_mmc_match[] = {
|
|
{ .compatible = "marvell,orion-sdio" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(mvebu_mmc) = {
|
|
.name = "mvebu_mmc",
|
|
.id = UCLASS_MMC,
|
|
.of_match = mvebu_mmc_match,
|
|
.ops = &mvebu_dm_mmc_ops,
|
|
.probe = mvebu_mmc_probe,
|
|
.bind = mvebu_mmc_bind,
|
|
.of_to_plat = mvebu_mmc_of_to_plat,
|
|
.plat_auto = sizeof(struct mvebu_mmc_plat),
|
|
};
|