linux-kernel - [PATCH v4 0/5] drm/etnaviv: Add support for running a PPU flop reset

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Message-ID: <20251110144625.18653-1-gert.wollny@collabora.com>
Date: Mon, 10 Nov 2025 15:37:46 +0100
From: gert.wollny@...labora.com
To: Christian Gmeiner <christian.gmeiner@...il.com>
Cc: Lucas Stach <l.stach@...gutronix.de>,
	Russell King <linux+etnaviv@...linux.org.uk>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	etnaviv@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 0/5] drm/etnaviv: Add support for running a PPU flop reset

Dear all, 

this is the fourth version of the series to add PPU flop reset. 

Changes w.r.t. the previous version are: 

  * Apply all changes suggested by Christian Gmeiner: 
   - replace "asm-generic/int-ll64.h" with "linux/types.h"
   - drop flop reset type enum since we only support one type here
   - move function return parameters on same line with function name
   - replace open coded for loop with memset32
   - add cnost to local static values
   - add a return value to etnaviv_flop_reset_ppu_init; handle and
     pass errors on to the caller
   - handle etnaviv_flop_reset_ppu_init return value
   - use dev_err for flop reset error message
   - fix include guard to be consistent with the other driver code
   - fix license header and formatting

  * run "checkpatch" and fix issues reported by it: 
   - don't initialize module parameter to zero
   - avoid multi-line string in warning message

Many thanks for any comments,
Gert

[PATCH v4 1/5] drm/etnaviv: Add command stream definitions required
[PATCH v4 2/5] drm/etnaviv: move some functions to a header to be
[PATCH v4 3/5] drm/etnaviv: Add a new function to emit a series of
[PATCH v4 4/5] drm/etnaviv: Add PPU flop reset
[PATCH v4 5/5] drm/etnaviv: Add module parameter to force PPU flop