From: Dave Stevenson Date: Mon, 24 Jan 2022 22:01:28 +0000 (-0500) Subject: regulator/rpi-panel-attiny: Use the regmap cache X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5fa4e8ea649009566a1b080f836ce23d4ce0c416;p=linux.git regulator/rpi-panel-attiny: Use the regmap cache The I2C to the Atmel is very fussy, and locks up easily on Pi0-3 particularly on reads. The LCD power status is controlled solely by this driver, so rather than reading it back from the Atmel, use the regmap cache to avoid reading values. Signed-off-by: Dave Stevenson Signed-off-by: Detlev Casanova Link: https://lore.kernel.org/r/20220124220129.158891-9-detlev.casanova@collabora.com Signed-off-by: Mark Brown --- diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c index 8090b9a485b5e..6e408a4b2c219 100644 --- a/drivers/regulator/rpi-panel-attiny-regulator.c +++ b/drivers/regulator/rpi-panel-attiny-regulator.c @@ -76,7 +76,7 @@ static const struct regmap_config attiny_regmap_config = { .val_bits = 8, .disable_locking = 1, .max_register = REG_WRITE_DATA_L, - .cache_type = REGCACHE_NONE, + .cache_type = REGCACHE_RBTREE, }; static int attiny_set_port_state(struct attiny_lcd *state, int reg, u8 val)