From: Jisheng Zhang <jszhang@kernel.org>
To: Liam Girdwood <lgirdwood@gmail.com>, Mark Brown <broonie@kernel.org>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] regulator: tps6287x-regulator: Enable REGCACHE_MAPLE
Date: Sun, 29 Jun 2025 17:58:22 +0800 [thread overview]
Message-ID: <20250629095822.868-1-jszhang@kernel.org> (raw)
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/tps6287x-regulator.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/regulator/tps6287x-regulator.c b/drivers/regulator/tps6287x-regulator.c
index c0f5f0a186a3..7b7d3ae39206 100644
--- a/drivers/regulator/tps6287x-regulator.c
+++ b/drivers/regulator/tps6287x-regulator.c
@@ -27,10 +27,17 @@
#define TPS6287X_CTRL3 0x03
#define TPS6287X_STATUS 0x04
+static bool tps6287x_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return reg == TPS6287X_STATUS;
+}
+
static const struct regmap_config tps6287x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = TPS6287X_STATUS,
+ .cache_type = REGCACHE_MAPLE,
+ .volatile_reg = tps6287x_volatile_reg,
};
static const struct linear_range tps6287x_voltage_ranges[] = {
--
2.49.0
next reply other threads:[~2025-06-29 10:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-29 9:58 Jisheng Zhang [this message]
2025-06-30 15:06 ` [PATCH] regulator: tps6287x-regulator: Enable REGCACHE_MAPLE Mark Brown
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