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813c800107
Add board directory for Google Chameleon V3 board Signed-off-by: Paweł Anikiel <pan@semihalf.com> Reviewed-by: Simon Glass <sjg@chromium.org>
44 lines
830 B
C
44 lines
830 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2022 Google LLC
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*/
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#include <net.h>
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#include <dm/device.h>
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#include <dm/uclass.h>
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#include <atsha204a-i2c.h>
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#include "mercury_aa1.h"
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#define MERCURY_AA1_ATSHA204A_OTP_MAC0 4
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#define MERCURY_AA1_ATSHA204A_OTP_MAC1 5
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int mercury_aa1_read_mac(u8 *mac)
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{
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struct udevice *dev;
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u8 buf[8];
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int ret;
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ret = uclass_get_device_by_name(UCLASS_MISC, "atsha204a@64", &dev);
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if (ret)
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return ret;
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ret = atsha204a_wakeup(dev);
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if (ret)
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return ret;
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ret = atsha204a_read(dev, ATSHA204A_ZONE_OTP, false,
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MERCURY_AA1_ATSHA204A_OTP_MAC0, buf);
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if (ret)
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goto sleep;
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ret = atsha204a_read(dev, ATSHA204A_ZONE_OTP, false,
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MERCURY_AA1_ATSHA204A_OTP_MAC1, buf + 4);
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if (ret)
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goto sleep;
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memcpy(mac, buf, ARP_HLEN);
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sleep:
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atsha204a_sleep(dev);
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return ret;
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}
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