add stmac read mac form eeprom

hc

2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/tty/serial/atmel_serial.h
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@@ -1,4 +1,4 @@
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-// SPDX-License-Identifier: GPL-2.0+
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+/* SPDX-License-Identifier: GPL-2.0+ */
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 /*
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  * include/linux/atmel_serial.h
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  *
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@@ -78,7 +78,8 @@
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 #define	ATMEL_US_OVER		BIT(19)	/* Oversampling Mode */
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 #define	ATMEL_US_INACK		BIT(20)	/* Inhibit Non Acknowledge */
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 #define	ATMEL_US_DSNACK		BIT(21)	/* Disable Successive NACK */
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-#define	ATMEL_US_MAX_ITER	GENMASK(26, 24)	/* Max Iterations */
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+#define	ATMEL_US_MAX_ITER_MASK	GENMASK(26, 24)	/* Max Iterations */
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+#define	ATMEL_US_MAX_ITER(n)	(((n) << 24) & ATMEL_US_MAX_ITER_MASK)
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 #define	ATMEL_US_FILTER		BIT(28)	/* Infrared Receive Line Filter */
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 #define ATMEL_US_IER		0x08	/* Interrupt Enable Register */