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: tps6286x-regulator: Enable REGCACHE_MAPLE
Date: Sun, 29 Jun 2025 17:51:07 +0800 [thread overview]
Message-ID: <20250629095107.804-1-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/tps6286x-regulator.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/regulator/tps6286x-regulator.c b/drivers/regulator/tps6286x-regulator.c
index 75f441f36de7..778f169b0acc 100644
--- a/drivers/regulator/tps6286x-regulator.c
+++ b/drivers/regulator/tps6286x-regulator.c
@@ -19,13 +19,22 @@
#define TPS6286X_CONTROL_FPWM BIT(4)
#define TPS6286X_CONTROL_SWEN BIT(5)
+#define TPS6286X_STATUS 0x05
+
#define TPS6286X_MIN_MV 400
#define TPS6286X_MAX_MV 1675
#define TPS6286X_STEP_MV 5
+static bool tps6287x_volatile_reg(struct device *dev, unsigned int reg)
+{
+ return reg == TPS6286X_STATUS;
+}
+
static const struct regmap_config tps6286x_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
+ .cache_type = REGCACHE_MAPLE,
+ .volatile_reg = tps6287x_volatile_reg,
};
static int tps6286x_set_mode(struct regulator_dev *rdev, unsigned int mode)
--
2.49.0
next reply other threads:[~2025-06-29 10:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-29 9:51 Jisheng Zhang [this message]
2025-06-30 15:06 ` Mark Brown
2025-07-05 9:51 ` Jisheng Zhang
2025-07-07 9:26 ` Mark Brown
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