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@@ -0,0 +1,54 @@
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+diff -Naur linux-4.7.3/arch/avr32/boards/grasshopper/Kconfig linux-4.7.3.grasshopper/arch/avr32/boards/grasshopper/Kconfig
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+--- linux-4.7.3/arch/avr32/boards/grasshopper/Kconfig 2016-09-20 11:43:03.645251779 +0200
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++++ linux-4.7.3.grasshopper/arch/avr32/boards/grasshopper/Kconfig 2016-09-20 11:58:20.129642638 +0200
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+@@ -49,4 +49,21 @@
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+ depends on I2C && I2C_GPIO
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+ default y
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+
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++config BOARD_GRASSHOPPER_USART0
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++ bool "Enable USART0"
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++ depends on SERIAL_ATMEL_PDC
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++ default n
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++ help
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++ USART0 is mapped to /dev/ttyS1 (or /dev/ttyAT1 resp.) and available via
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++ connector J6 and J13.
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++
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++config BOARD_GRASSHOPPER_USART1
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++ bool "Enable USART1 (CP2102 USB-Interface)"
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++ depends on SERIAL_ATMEL_PDC
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++ default y
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++ help
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++ USART1 is mapped to /dev/ttyS0 (or /dev/ttyAT0 resp.) and available via
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++ the CP2002 USB-USART-bridge. If you disable this option, you won't be
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++ able to access the serial console, so it is recommended to say 'y' here.
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++
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+ endif # BOARD_GRASSHOPPER
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+diff -Naur linux-4.7.3/arch/avr32/boards/grasshopper/setup.c linux-4.7.3.grasshopper/arch/avr32/boards/grasshopper/setup.c
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+--- linux-4.7.3/arch/avr32/boards/grasshopper/setup.c 2016-09-20 11:43:03.646251793 +0200
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++++ linux-4.7.3.grasshopper/arch/avr32/boards/grasshopper/setup.c 2016-09-20 12:03:04.864496603 +0200
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+@@ -166,7 +166,12 @@
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+
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+ void __init setup_board(void)
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+ {
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++#ifdef CONFIG_BOARD_GRASSHOPPER_USART1
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+ at32_map_usart(1, 0, 0); // USART 1: /dev/ttyS0, CP2102
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++#endif
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++#ifdef CONFIG_BOARD_GRASSHOPPER_USART0
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++ at32_map_usart(0, 1, 0); // USART 0: /dev/ttyS1
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++#endif
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+ at32_setup_serial_console(0);
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+
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+ // grasshopper_add_spi();
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+@@ -182,7 +187,12 @@
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+ */
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+ at32_reserve_pin(GPIO_PIOE_BASE, ATMEL_EBI_PE_DATA_ALL);
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+ at32_add_device_usba(0, NULL);
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++#ifdef CONFIG_BOARD_GRASSHOPPER_USART1
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+ at32_add_device_usart(0);
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++#endif
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++#ifdef CONFIG_BOARD_GRASSHOPPER_USART0
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++ at32_add_device_usart(1);
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++#endif
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+
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+ #ifdef CONFIG_GRASSHOPPER_LCD
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+ at32_add_device_lcdc(0, &grasshopper_lcdc_data,
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