On Tue, Apr 09, 2024 at 03:43:20PM +0800, Guanbing Huang wrote:
From: Guanbing Huang <albanhuang@xxxxxxxxxxx>You either forgot or deliberately not added my tag. Can you elaborate?
The 16550a serial port based on the ACPI table requires obtaining the
reg-shift attribute. In the ACPI scenario, If the reg-shift property
is not configured like in DTS, the 16550a serial driver cannot read or
write controller registers properly during initialization.
To address the issue of configuring the reg-shift property, the
__uart_read_properties() universal interface is called to implement it.
Adaptation of PNP devices is done in the __uart_read_properties() function.