From 500c20fe3ea4a241f7ea58a414343367ab2e4085 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 4 Jul 2024 05:28:59 +0200 Subject: i2c: add debug message for detected HostNotify alerts Setting up HostNotify can be tricky. Support debugging by stating when a HostNotify alert was received independent of the irq being mapped. Especially useful with the in-kernel i2c testunit. Update documentation as well. Signed-off-by: Wolfram Sang Reviewed-by: Andi Shyti --- Documentation/i2c/slave-testunit-backend.rst | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation/i2c') diff --git a/Documentation/i2c/slave-testunit-backend.rst b/Documentation/i2c/slave-testunit-backend.rst index 0df60c7c0be4..37142a48ab35 100644 --- a/Documentation/i2c/slave-testunit-backend.rst +++ b/Documentation/i2c/slave-testunit-backend.rst @@ -99,6 +99,11 @@ Example to send a notification after 10ms:: # i2cset -y 0 0x30 0x02 0x42 0x64 0x01 i +If the host controller supports HostNotify, this message with debug level +should appear (Linux 6.11 and later):: + + Detected HostNotify from address 0x30 + 0x03 SMBUS_BLOCK_PROC_CALL ~~~~~~~~~~~~~~~~~~~~~~~~~~ -- cgit v1.2.3