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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2019, Microchip Technology, Inc.
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* Author: Eugen Hristev <eugen.hristev@microchip.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <misc.h>
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#include <asm/io.h>
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#include <linux/err.h>
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struct microchip_flexcom_regs {
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u32 cr;
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};
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struct microchip_flexcom_plat {
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struct microchip_flexcom_regs *regs;
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u32 flexcom_mode;
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};
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static int microchip_flexcom_of_to_plat(struct udevice *dev)
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{
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struct microchip_flexcom_plat *plat = dev_get_plat(dev);
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int ret;
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plat->regs = map_physmem(dev_read_addr(dev),
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sizeof(struct microchip_flexcom_regs),
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MAP_NOCACHE);
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ret = dev_read_u32(dev, "atmel,flexcom-mode", &plat->flexcom_mode);
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if (IS_ERR_VALUE(ret)) {
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debug("Missing atmel,flexcom-mode property\n");
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return ret;
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}
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/*
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* The mode must have only 2 bits. If any other bits are set,
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* the value is not supported.
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*/
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if (plat->flexcom_mode & 0xfffffffc) {
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debug("Wrong atmel,flexcom-mode property\n");
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return -EINVAL;
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}
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writel(plat->flexcom_mode, &plat->regs->cr);
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return 0;
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}
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static const struct udevice_id microchip_flexcom_ids[] = {
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{ .compatible = "atmel,sama5d2-flexcom" },
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{ .compatible = "microchip,flexcom" },
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{}
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};
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U_BOOT_DRIVER(microchip_flexcom) = {
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.name = "microchip_flexcom",
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.id = UCLASS_MISC,
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.of_match = microchip_flexcom_ids,
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.of_to_plat = microchip_flexcom_of_to_plat,
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.plat_auto = sizeof(struct microchip_flexcom_plat),
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};
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