tests/avocado/machine_aspeed.py: Add an I2C slave test
The Aspeed 2600 I2C controller supports a slave mode which can be tested with the I2C echo device. Test extracted from : https://lists.nongnu.org/archive/html/qemu-devel/2022-06/msg00183.html Suggested-by: Klaus Jensen <k.jensen@samsung.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Cédric Le Goater <clg@kaod.org>
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@ -199,6 +199,8 @@ class AST2x00Machine(QemuSystemTest):
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'tmp105,bus=aspeed.i2c.bus.3,address=0x4d,id=tmp-test');
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self.vm.add_args('-device',
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'ds1338,bus=aspeed.i2c.bus.3,address=0x32');
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self.vm.add_args('-device',
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'i2c-echo,bus=aspeed.i2c.bus.3,address=0x42');
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self.do_test_arm_aspeed_buildroot_start(image_path, '0xf00')
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exec_command_and_wait_for_pattern(self,
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@ -217,6 +219,14 @@ class AST2x00Machine(QemuSystemTest):
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year = time.strftime("%Y")
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exec_command_and_wait_for_pattern(self, 'hwclock -f /dev/rtc1', year);
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exec_command_and_wait_for_pattern(self,
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'echo slave-24c02 0x1064 > /sys/bus/i2c/devices/i2c-3/new_device',
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'i2c i2c-3: new_device: Instantiated device slave-24c02 at 0x64');
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exec_command(self, 'i2cset -y 3 0x42 0x64 0x00 0xaa i');
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time.sleep(0.1)
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exec_command_and_wait_for_pattern(self,
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'hexdump /sys/bus/i2c/devices/3-1064/slave-eeprom',
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'0000000 ffaa ffff ffff ffff ffff ffff ffff ffff');
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self.do_test_arm_aspeed_buildroot_poweroff()
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