Re: [PATCH 05/16] remoteproc/pru: Add pru-specific debugfs support

From: David Lechner
Date: Mon Nov 26 2018 - 17:37:54 EST


On 11/26/18 1:52 AM, Roger Quadros wrote:
From: Suman Anna <s-anna@xxxxxx>

The remoteproc core creates certain standard debugfs entries,
that does not give a whole lot of useful information for the
PRUs. The PRU remoteproc driver is enhanced to add additional
debugfs entries for PRU. These will be auto-cleaned up when
the parent rproc debug directory is removed.

The enhanced debugfs support adds two new entries: 'regs' and
'single_step'. The 'regs' dumps out the useful CTRL sub-module
registers as well as each of the 32 GPREGs and CT_REGs registers.
The GPREGs and CT_REGs though are printed only when the PRU is
halted and accessible as per the IP design.


If the driver used regmap to access the CTRL I/O memory, then
'regs' wouldn't be needed since regmap already does debugfs.