linux-kernel - [PATCH] drm/bridge: tc358767: Convert to use maple tree register cache

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Date:   Sun, 01 Oct 2023 01:43:13 +0200
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: tc358767: 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/tc358767.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index b45bffab7c81..ef2e373606ba 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -2005,7 +2005,7 @@ static const struct regmap_config tc_regmap_config = {
 	.val_bits = 32,
 	.reg_stride = 4,
 	.max_register = PLL_DBG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.readable_reg = tc_readable_reg,
 	.volatile_table = &tc_volatile_table,
 	.writeable_reg = tc_writeable_reg,

---
base-commit: 6465e260f48790807eef06b583b38ca9789b6072
change-id: 20230929-drm-tc358767-maple-db143f667958

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