mirror of
https://github.com/brain-hackers/u-boot-brain
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102142c9e0
This driver implements platform specific glue and fixups for PIC32 internal SDHCI controller. Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com> Signed-off-by: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun@microchip.com> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
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* Support of SDHCI for Microchip PIC32 SoC.
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*
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* Copyright (C) 2015 Microchip Technology Inc.
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* Andrei Pistirica <andrei.pistirica@microchip.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <dm.h>
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#include <common.h>
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#include <sdhci.h>
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#include <asm/errno.h>
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#include <mach/pic32.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int pic32_sdhci_probe(struct udevice *dev)
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{
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struct sdhci_host *host = dev_get_priv(dev);
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const void *fdt = gd->fdt_blob;
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u32 f_min_max[2];
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fdt_addr_t addr;
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fdt_size_t size;
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int ret;
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addr = fdtdec_get_addr_size(fdt, dev->of_offset, "reg", &size);
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if (addr == FDT_ADDR_T_NONE)
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return -EINVAL;
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host->ioaddr = ioremap(addr, size);
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host->name = (char *)dev->name;
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host->quirks = SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_NO_CD;
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host->bus_width = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
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"bus-width", 4);
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ret = fdtdec_get_int_array(gd->fdt_blob, dev->of_offset,
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"clock-freq-min-max", f_min_max, 2);
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if (ret) {
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printf("sdhci: clock-freq-min-max not found\n");
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return ret;
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}
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return add_sdhci(host, f_min_max[1], f_min_max[0]);
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}
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static const struct udevice_id pic32_sdhci_ids[] = {
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{ .compatible = "microchip,pic32mzda-sdhci" },
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{ }
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};
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U_BOOT_DRIVER(pic32_sdhci_drv) = {
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.name = "pic32_sdhci",
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.id = UCLASS_MMC,
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.of_match = pic32_sdhci_ids,
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.probe = pic32_sdhci_probe,
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.priv_auto_alloc_size = sizeof(struct sdhci_host),
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};
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