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109 lines
2.5 KiB
109 lines
2.5 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/ |
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* |
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* Texas Instruments' K3 SD Host Controller Interface |
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*/ |
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#include <clk.h> |
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#include <common.h> |
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#include <dm.h> |
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#include <malloc.h> |
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#include <power-domain.h> |
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#include <sdhci.h> |
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#define K3_ARASAN_SDHCI_MIN_FREQ 0 |
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struct k3_arasan_sdhci_plat { |
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struct mmc_config cfg; |
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struct mmc mmc; |
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unsigned int f_max; |
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}; |
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static int k3_arasan_sdhci_probe(struct udevice *dev) |
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{ |
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struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev); |
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struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); |
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struct sdhci_host *host = dev_get_priv(dev); |
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struct power_domain sdhci_pwrdmn; |
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struct clk clk; |
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unsigned long clock; |
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int ret; |
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ret = power_domain_get_by_index(dev, &sdhci_pwrdmn, 0); |
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if (ret) { |
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dev_err(dev, "failed to get power domain\n"); |
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return ret; |
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} |
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ret = power_domain_on(&sdhci_pwrdmn); |
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if (ret) { |
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dev_err(dev, "Power domain on failed\n"); |
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return ret; |
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} |
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ret = clk_get_by_index(dev, 0, &clk); |
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if (ret) { |
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dev_err(dev, "failed to get clock\n"); |
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return ret; |
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} |
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clock = clk_get_rate(&clk); |
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if (IS_ERR_VALUE(clock)) { |
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dev_err(dev, "failed to get rate\n"); |
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return clock; |
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} |
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host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD | |
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SDHCI_QUIRK_BROKEN_R1B; |
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host->max_clk = clock; |
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ret = sdhci_setup_cfg(&plat->cfg, host, plat->f_max, |
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K3_ARASAN_SDHCI_MIN_FREQ); |
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host->mmc = &plat->mmc; |
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if (ret) |
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return ret; |
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host->mmc->priv = host; |
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host->mmc->dev = dev; |
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upriv->mmc = host->mmc; |
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return sdhci_probe(dev); |
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} |
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static int k3_arasan_sdhci_ofdata_to_platdata(struct udevice *dev) |
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{ |
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struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev); |
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struct sdhci_host *host = dev_get_priv(dev); |
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host->name = dev->name; |
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host->ioaddr = (void *)dev_read_addr(dev); |
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host->bus_width = dev_read_u32_default(dev, "bus-width", 4); |
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plat->f_max = dev_read_u32_default(dev, "max-frequency", 0); |
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return 0; |
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} |
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static int k3_arasan_sdhci_bind(struct udevice *dev) |
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{ |
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struct k3_arasan_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 k3_arasan_sdhci_ids[] = { |
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{ .compatible = "arasan,sdhci-5.1" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(k3_arasan_sdhci_drv) = { |
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.name = "k3_arasan_sdhci", |
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.id = UCLASS_MMC, |
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.of_match = k3_arasan_sdhci_ids, |
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.ofdata_to_platdata = k3_arasan_sdhci_ofdata_to_platdata, |
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.ops = &sdhci_ops, |
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.bind = k3_arasan_sdhci_bind, |
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.probe = k3_arasan_sdhci_probe, |
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.priv_auto_alloc_size = sizeof(struct sdhci_host), |
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.platdata_auto_alloc_size = sizeof(struct k3_arasan_sdhci_plat), |
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};
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