clk: si521xx: Use REGCACHE_FLAT instead of NONE

In order to reload registers into the clock generator on resume using
regcache_sync(), it is necessary to select one of the regcache types
which are not NONE. Since this device has some 7 registers, use the
simplest one, FLAT. The regcache code complains about REGCACHE_NONE
being selected and generates a WARNING, this fixes that warning.

Fixes: edc12763a3a2 ("clk: si521xx: Clock driver for Skyworks Si521xx I2C PCIe clock generators")
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20230831181656.154750-1-marex@denx.de
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-si521xx.c b/drivers/clk/clk-si521xx.c
index 4eaf1b53f06bd78950f584d7a991e6253f671cc8..0b9e2edbbe67cc07cfe740346fe0ffe60b61cdf4 100644 (file)
--- a/drivers/clk/clk-si521xx.c
+++ b/drivers/clk/clk-si521xx.c
@@ -146,7 +146,7 @@ static int si521xx_regmap_i2c_read(void *context, unsigned int reg,
 static const struct regmap_config si521xx_regmap_config = {
        .reg_bits = 8,
        .val_bits = 8,
-       .cache_type = REGCACHE_NONE,
+       .cache_type = REGCACHE_FLAT,
        .max_register = SI521XX_REG_DA,
        .rd_table = &si521xx_readable_table,
        .wr_table = &si521xx_writeable_table,