linux-kernel - [PATCH] drm/bridge: lt9211: Convert to use maple tree register cache

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Date:   Sun, 01 Oct 2023 11:24:49 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH] drm/bridge: lt9211: Convert to use maple tree register
 cache

The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache.

Signed-off-by: Mark Brown <broonie@...nel.org>
---
 drivers/gpu/drm/bridge/lontium-lt9211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/lontium-lt9211.c b/drivers/gpu/drm/bridge/lontium-lt9211.c
index 4d404f5ef87e..c8881796fba4 100644
--- a/drivers/gpu/drm/bridge/lontium-lt9211.c
+++ b/drivers/gpu/drm/bridge/lontium-lt9211.c
@@ -89,7 +89,7 @@ static const struct regmap_config lt9211_regmap_config = {
 	.volatile_table	= &lt9211_rw_table,
 	.ranges = &lt9211_range,
 	.num_ranges = 1,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = 0xda00,
 };
 

---
base-commit: 6465e260f48790807eef06b583b38ca9789b6072
change-id: 20230929-drm-lt9211-maple-f2b0807acd53

Best regards,
-- 
Mark Brown <broonie@...nel.org>