Add support for the Aspeed SD host controller engine.
Signed-off-by: Eddie James eajames@linux.ibm.com --- drivers/mmc/Kconfig | 11 +++++++ drivers/mmc/Makefile | 1 + drivers/mmc/aspeed_sdhci.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 90 insertions(+) create mode 100644 drivers/mmc/aspeed_sdhci.c
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index c6812f6..536f66a 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -421,6 +421,17 @@ config SPL_MMC_SDHCI_ADMA This enables support for the ADMA (Advanced DMA) defined in the SD Host Controller Standard Specification Version 3.00 in SPL.
+config MMC_SDHCI_ASPEED + bool "Aspeed SDHCI controller" + depends on ARCH_ASPEED + depends on DM_MMC + depends on MMC_SDHCI + help + Enables support for the Aspeed SDHCI 2.0 controller present on Aspeed + SoCs. This device is compatible with SD 3.0 and/or MMC 4.3 + specifications. On the AST2600, the device is also compatible with + MMC 5.1 and eMMC 3.0. + config MMC_SDHCI_ATMEL bool "Atmel SDHCI controller support" depends on ARCH_AT91 diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 6cc018b..5594195 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -46,6 +46,7 @@ obj-$(CONFIG_JZ47XX_MMC) += jz_mmc.o
# SDHCI obj-$(CONFIG_MMC_SDHCI) += sdhci.o +obj-$(CONFIG_MMC_SDHCI_ASPEED) += aspeed_sdhci.o obj-$(CONFIG_MMC_SDHCI_ATMEL) += atmel_sdhci.o obj-$(CONFIG_MMC_SDHCI_BCM2835) += bcm2835_sdhci.o obj-$(CONFIG_MMC_SDHCI_BCMSTB) += bcmstb_sdhci.o diff --git a/drivers/mmc/aspeed_sdhci.c b/drivers/mmc/aspeed_sdhci.c new file mode 100644 index 0000000..c292c42 --- /dev/null +++ b/drivers/mmc/aspeed_sdhci.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2019 IBM Corp. + * Eddie James eajames@linux.ibm.com + */ + +#include <common.h> +#include <clk.h> +#include <dm.h> +#include <malloc.h> +#include <sdhci.h> + +struct aspeed_sdhci_plat { + struct mmc_config cfg; + struct mmc mmc; +}; + +static int aspeed_sdhci_probe(struct udevice *dev) +{ + struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); + struct aspeed_sdhci_plat *plat = dev_get_platdata(dev); + struct sdhci_host *host = dev_get_priv(dev); + u32 max_clk; + struct clk clk; + int ret; + + ret = clk_get_by_index(dev, 0, &clk); + if (ret) + return ret; + + ret = clk_enable(&clk); + if (ret) + return ret; + + host->name = dev->name; + host->ioaddr = (void *)devfdt_get_addr(dev); + + max_clk = clk_get_rate(&clk); + if (!max_clk) + return -EINVAL; + + host->max_clk = max_clk; + host->mmc = &plat->mmc; + host->mmc->dev = dev; + host->mmc->priv = host; + upriv->mmc = host->mmc; + + ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0); + if (ret) + return ret; + + return sdhci_probe(dev); +} + +static int aspeed_sdhci_bind(struct udevice *dev) +{ + struct aspeed_sdhci_plat *plat = dev_get_platdata(dev); + + return sdhci_bind(dev, &plat->mmc, &plat->cfg); +} + +static const struct udevice_id aspeed_sdhci_ids[] = { + { .compatible = "aspeed,ast2400-sdhci" }, + { .compatible = "aspeed,ast2500-sdhci" }, + { .compatible = "aspeed,ast2600-sdhci" }, + { } +}; + +U_BOOT_DRIVER(aspeed_sdhci_drv) = { + .name = "aspeed_sdhci", + .id = UCLASS_MMC, + .of_match = aspeed_sdhci_ids, + .ops = &sdhci_ops, + .bind = aspeed_sdhci_bind, + .probe = aspeed_sdhci_probe, + .priv_auto_alloc_size = sizeof(struct sdhci_host), + .platdata_auto_alloc_size = sizeof(struct aspeed_sdhci_plat), +};