This patch adds Intel Tangier eMMC/SDHCI driver. Intel Tangier SoC contains a hybrid of PCI and non-PCI devices. SDHCI controller is one of the devices which are *not* on a PCI and, hence, cannot be enumerated by standard PCI means. This driver, allows for SDHCI controller on Tangier SoC to work in U-Boot. Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>master
parent
b706b1c24d
commit
83b3248e7e
@ -0,0 +1,81 @@ |
||||
/*
|
||||
* Copyright (c) 2017 Intel Corporation |
||||
* |
||||
* SPDX-License-Identifier: GPL-2.0+ |
||||
*/ |
||||
#include <common.h> |
||||
#include <dm.h> |
||||
#include <dm/device.h> |
||||
#include <linux/io.h> |
||||
#include <linux/sizes.h> |
||||
#include <malloc.h> |
||||
#include <mmc.h> |
||||
#include <sdhci.h> |
||||
|
||||
#define SDHCI_TANGIER_FMAX 200000000 |
||||
#define SDHCI_TANGIER_FMIN 400000 |
||||
|
||||
struct sdhci_tangier_plat { |
||||
struct mmc_config cfg; |
||||
struct mmc mmc; |
||||
void __iomem *ioaddr; |
||||
}; |
||||
|
||||
static int sdhci_tangier_bind(struct udevice *dev) |
||||
{ |
||||
struct sdhci_tangier_plat *plat = dev_get_platdata(dev); |
||||
|
||||
return sdhci_bind(dev, &plat->mmc, &plat->cfg); |
||||
} |
||||
|
||||
static int sdhci_tangier_probe(struct udevice *dev) |
||||
{ |
||||
struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
||||
struct sdhci_tangier_plat *plat = dev_get_platdata(dev); |
||||
struct sdhci_host *host = dev_get_priv(dev); |
||||
fdt_addr_t base; |
||||
int ret; |
||||
|
||||
base = dev_get_addr(dev); |
||||
if (base == FDT_ADDR_T_NONE) |
||||
return -EINVAL; |
||||
|
||||
plat->ioaddr = devm_ioremap(dev, base, SZ_1K); |
||||
if (!plat->ioaddr) |
||||
return -ENOMEM; |
||||
|
||||
host->name = dev->name; |
||||
host->ioaddr = plat->ioaddr; |
||||
host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_VOLTAGE | |
||||
SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_WAIT_SEND_CMD; |
||||
|
||||
/* MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195 */ |
||||
host->voltages = MMC_VDD_165_195; |
||||
|
||||
ret = sdhci_setup_cfg(&plat->cfg, host, SDHCI_TANGIER_FMAX, |
||||
SDHCI_TANGIER_FMIN); |
||||
if (ret) |
||||
return ret; |
||||
|
||||
upriv->mmc = &plat->mmc; |
||||
host->mmc = &plat->mmc; |
||||
host->mmc->priv = host; |
||||
|
||||
return sdhci_probe(dev); |
||||
} |
||||
|
||||
static const struct udevice_id sdhci_tangier_match[] = { |
||||
{ .compatible = "intel,sdhci-tangier" }, |
||||
{ /* sentinel */ } |
||||
}; |
||||
|
||||
U_BOOT_DRIVER(sdhci_tangier) = { |
||||
.name = "sdhci-tangier", |
||||
.id = UCLASS_MMC, |
||||
.of_match = sdhci_tangier_match, |
||||
.bind = sdhci_tangier_bind, |
||||
.probe = sdhci_tangier_probe, |
||||
.ops = &sdhci_ops, |
||||
.priv_auto_alloc_size = sizeof(struct sdhci_host), |
||||
.platdata_auto_alloc_size = sizeof(struct sdhci_tangier_plat), |
||||
}; |
Loading…
Reference in new issue