linux-kernel - [PATCH] mfd: rk8xx: Convert to use maple tree register cache

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Message-Id: <20231001-mfd-rk88x-maple-v1-1-90434cfb2f90@kernel.org>
Date:   Sun, 01 Oct 2023 00:44:22 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Lee Jones <lee@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Mark Brown <broonie@...nel.org>
Subject: [PATCH] mfd: rk8xx: 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/mfd/rk8xx-i2c.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/rk8xx-i2c.c b/drivers/mfd/rk8xx-i2c.c
index 1a98feea97e2..75b5cf09d5a0 100644
--- a/drivers/mfd/rk8xx-i2c.c
+++ b/drivers/mfd/rk8xx-i2c.c
@@ -80,7 +80,7 @@ static const struct regmap_config rk818_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = RK818_USB_CTRL_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.volatile_reg = rk808_is_volatile_reg,
 };
 
@@ -88,7 +88,7 @@ static const struct regmap_config rk805_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = RK805_OFF_SOURCE_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.volatile_reg = rk808_is_volatile_reg,
 };
 
@@ -96,7 +96,7 @@ static const struct regmap_config rk808_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = RK808_IO_POL_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.volatile_reg = rk808_is_volatile_reg,
 };
 

---
base-commit: 6465e260f48790807eef06b583b38ca9789b6072
change-id: 20230929-mfd-rk88x-maple-632c9597e289

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