Add support for the Aspeed SD host controller engine.

Signed-off-by: Eddie James eajames@linux.ibm.com Reviewed-by: Cédric Le Goater clg@kaod.org --- Changes since v3: - Rebase on master

arch/arm/include/asm/gpio.h | 3 +- drivers/mmc/Kconfig | 11 ++++++ drivers/mmc/Makefile | 1 + drivers/mmc/aspeed_sdhci.c | 90 +++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 104 insertions(+), 1 deletion(-) create mode 100644 drivers/mmc/aspeed_sdhci.c

diff --git a/arch/arm/include/asm/gpio.h b/arch/arm/include/asm/gpio.h index b946105..6ff5f42 100644 --- a/arch/arm/include/asm/gpio.h +++ b/arch/arm/include/asm/gpio.h @@ -2,7 +2,8 @@ !defined(CONFIG_ARCH_K3) && !defined(CONFIG_ARCH_BCM6858) && \ !defined(CONFIG_ARCH_BCM63158) && !defined(CONFIG_ARCH_ROCKCHIP) && \ !defined(CONFIG_ARCH_LX2160A) && !defined(CONFIG_ARCH_LS1028A) && \ - !defined(CONFIG_ARCH_LS2080A) && !defined(CONFIG_ARCH_LS1088A) + !defined(CONFIG_ARCH_LS2080A) && !defined(CONFIG_ARCH_LS1088A) && \ + !defined(CONFIG_ARCH_ASPEED) #include <asm/arch/gpio.h> #endif #include <asm-generic/gpio.h> diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index 0ccb1ea..8fb2bfa 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..1321ec3 --- /dev/null +++ b/drivers/mmc/aspeed_sdhci.c @@ -0,0 +1,90 @@ +// 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) + goto free; + + host->name = dev->name; + host->ioaddr = (void *)devfdt_get_addr(dev); + + max_clk = clk_get_rate(&clk); + if (IS_ERR_VALUE(max_clk)) { + ret = max_clk; + goto err; + } + + 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) + goto err; + + ret = sdhci_probe(dev); + if (ret) + goto err; + + return 0; + +err: + clk_disable(&clk); +free: + clk_free(&clk); + return ret; +} + +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), +};