[PATCH] regulator: rt5739: Enable REGCACHE_MAPLE

[PATCH] regulator: rt5739: Enable REGCACHE_MAPLE

[Jisheng Zhang]

Enable regmap cache to reduce i2c transactions and corresponding
interrupts if regulator is accessed frequently.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---
 drivers/regulator/rt5739.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/regulator/rt5739.c b/drivers/regulator/rt5739.c
index 91412c905ce6..5fcddd7c2da7 100644
--- a/drivers/regulator/rt5739.c
+++ b/drivers/regulator/rt5739.c
@@ -24,6 +24,8 @@
 #define RT5739_REG_NSEL1	0x01
 #define RT5739_REG_CNTL1	0x02
 #define RT5739_REG_ID1		0x03
+#define RT5739_REG_ID2		0x04
+#define RT5739_REG_MON		0x05
 #define RT5739_REG_CNTL2	0x06
 #define RT5739_REG_CNTL4	0x08
 
@@ -236,11 +238,18 @@ static void rt5739_init_regulator_desc(struct regulator_desc *desc,
 	}
 }
 
+static bool rt5739_volatile_reg(struct device *dev, unsigned int reg)
+{
+	return reg == RT5739_REG_MON;
+}
+
 static const struct regmap_config rt5739_regmap_config = {
 	.name = "rt5739",
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = RT5739_REG_CNTL4,
+	.cache_type = REGCACHE_MAPLE,
+	.volatile_reg = rt5739_volatile_reg,
 };
 
 static int rt5739_probe(struct i2c_client *i2c)
-- 
2.49.0

Re: [PATCH] regulator: rt5739: Enable REGCACHE_MAPLE

[Mark Brown]

On Sun, 29 Jun 2025 17:48:03 +0800, Jisheng Zhang wrote:
> Enable regmap cache to reduce i2c transactions and corresponding
> interrupts if regulator is accessed frequently.
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: rt5739: Enable REGCACHE_MAPLE
      commit: bd7c7976f9716da4cc961ab8ff4e17811d522602

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark