drivers: PL061: Add platform driver probing support
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Cover letter [PATCH 0/2] drivers: PL061: Add platform driver probing support
Hi Russell,
Quoted 7 lines · Russell King - ARM Linux
Quoted 6 lines · Shannon Zhao
From: Shannon Zhao <[email protected]>
According to ACPI SPEC, it supports ARM boards to use "GPIO-signaled ACPI Events". These events can be used for input events. And to QEMU, it uses GPIO PL061 controller for input events.
Quoted 6 lines
Quoted 2 lines
These two patches add platform driver support for PL061 probed by DT or ACPI.
This certainly is incorrect for DT, and is probably wrong for ACPI too. DT creates amba devices, so binds via the amba device driver.
Oh, sorry. The changes for DT are not necessary. But for ACPI I think it needs to convert pl061 to platform device since ACPI doesn't support AMBA devices. The Pl011 also does the same thing to support ACPI probing. See drivers/tty/serial/amba-pl011.c
Thanks,
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Shannon