mirror of
https://github.com/AsahiLinux/u-boot
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7764ee2e83
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>
90 lines
1.8 KiB
C
90 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright 2019 IBM Corp.
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* Eddie James <eajames@linux.ibm.com>
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*/
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <malloc.h>
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#include <sdhci.h>
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struct aspeed_sdhci_plat {
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struct mmc_config cfg;
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struct mmc mmc;
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};
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static int aspeed_sdhci_probe(struct udevice *dev)
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{
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
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struct aspeed_sdhci_plat *plat = dev_get_platdata(dev);
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struct sdhci_host *host = dev_get_priv(dev);
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u32 max_clk;
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struct clk clk;
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int ret;
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ret = clk_get_by_index(dev, 0, &clk);
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if (ret)
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return ret;
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ret = clk_enable(&clk);
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if (ret)
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goto free;
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host->name = dev->name;
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host->ioaddr = (void *)devfdt_get_addr(dev);
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max_clk = clk_get_rate(&clk);
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if (IS_ERR_VALUE(max_clk)) {
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ret = max_clk;
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goto err;
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}
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host->max_clk = max_clk;
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host->mmc = &plat->mmc;
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host->mmc->dev = dev;
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host->mmc->priv = host;
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upriv->mmc = host->mmc;
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ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
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if (ret)
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goto err;
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ret = sdhci_probe(dev);
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if (ret)
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goto err;
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return 0;
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err:
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clk_disable(&clk);
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free:
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clk_free(&clk);
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return ret;
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}
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static int aspeed_sdhci_bind(struct udevice *dev)
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{
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struct aspeed_sdhci_plat *plat = dev_get_platdata(dev);
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return sdhci_bind(dev, &plat->mmc, &plat->cfg);
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}
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static const struct udevice_id aspeed_sdhci_ids[] = {
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{ .compatible = "aspeed,ast2400-sdhci" },
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{ .compatible = "aspeed,ast2500-sdhci" },
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{ .compatible = "aspeed,ast2600-sdhci" },
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{ }
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};
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U_BOOT_DRIVER(aspeed_sdhci_drv) = {
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.name = "aspeed_sdhci",
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.id = UCLASS_MMC,
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.of_match = aspeed_sdhci_ids,
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.ops = &sdhci_ops,
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.bind = aspeed_sdhci_bind,
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.probe = aspeed_sdhci_probe,
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.priv_auto_alloc_size = sizeof(struct sdhci_host),
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.platdata_auto_alloc_size = sizeof(struct aspeed_sdhci_plat),
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};
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