regulator: rk808: fix buck range on RK806

The linear ranges aren't really matching what they should be. Indeed,
the range is inclusive of the min value, so it makes sense the previous
range does NOT include the max step value representing the min value of
the range in question.

Since 1.5V is represented by the decimal value 160, the previous range
max step value should be 159 and not 160. Similarly, 3.4V is represented
by the decimal value 236, so the previous range max value should be 235
and not 237.

The only change in behavior this makes is that this actually modeled
the ranges to map step with decimal value 237 with 3.65V instead of
3.4V (the max supported by the HW).

Fixes: f991a220a447 ("regulator: rk808: add rk806 support")
Cc: Quentin Schulz <foss+kernel@0leil.net>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Link: https://msgid.link/r/20240223-rk806-regulator-ranges-v1-1-3904ab70d250@theobroma-systems.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c
index e374fa6e5f2841e4a96fc2ad03907f020284cfc6..bfab5468cc54c3df7ce2d87776a91d3c27efb30d 100644 (file)
--- a/drivers/regulator/rk808-regulator.c
+++ b/drivers/regulator/rk808-regulator.c
@@ -1017,9 +1017,9 @@ static const struct regulator_desc rk805_reg[] = {
 };
 
 static const struct linear_range rk806_buck_voltage_ranges[] = {
-       REGULATOR_LINEAR_RANGE(500000, 0, 160, 6250), /* 500mV ~ 1500mV */
-       REGULATOR_LINEAR_RANGE(1500000, 161, 237, 25000), /* 1500mV ~ 3400mV */
-       REGULATOR_LINEAR_RANGE(3400000, 238, 255, 0),
+       REGULATOR_LINEAR_RANGE(500000, 0, 159, 6250), /* 500mV ~ 1500mV */
+       REGULATOR_LINEAR_RANGE(1500000, 160, 235, 25000), /* 1500mV ~ 3400mV */
+       REGULATOR_LINEAR_RANGE(3400000, 236, 255, 0),
 };
 
 static const struct linear_range rk806_ldo_voltage_ranges[] = {