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| author |   Alexander Stein <alexander.stein@ew.tq-group.com> | 2023-03-10 08:49:40 +0100 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2023-03-21 10:47:06 -0700 |
| commit | 632e04739c8f45c2d9ca4d4c5bd18d80c2ac9296 (patch) | |
| tree | 7797477883b09fe735f1c48e62c37ae9846ebc3c /drivers/clk/clk-renesas-pcie.c | |
| parent | clk: imx6ul: fix "failed to get parent" error (diff) | |
| download | wireguard-linux-632e04739c8f45c2d9ca4d4c5bd18d80c2ac9296.tar.xz wireguard-linux-632e04739c8f45c2d9ca4d4c5bd18d80c2ac9296.zip | |
clk: rs9: Fix suspend/resume
Disabling the cache in commit 2ff4ba9e3702 ("clk: rs9: Fix I2C accessors")
without removing cache synchronization in resume path results in a
kernel panic as map->cache_ops is unset, due to REGCACHE_NONE.
Enable flat cache again to support resume again. num_reg_defaults_raw
is necessary to read the cache defaults from hardware. Some registers
are strapped in hardware and cannot be provided in software.
Fixes: 2ff4ba9e3702 ("clk: rs9: Fix I2C accessors")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20230310074940.3475703-1-alexander.stein@ew.tq-group.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/clk-renesas-pcie.c')
| -rw-r--r-- | drivers/clk/clk-renesas-pcie.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/clk-renesas-pcie.c b/drivers/clk/clk-renesas-pcie.c index f91f30560820..ff3a52d48479 100644 --- a/drivers/clk/clk-renesas-pcie.c +++ b/drivers/clk/clk-renesas-pcie.c @@ -143,8 +143,9 @@ static int rs9_regmap_i2c_read(void *context, static const struct regmap_config rs9_regmap_config = { .reg_bits = 8, .val_bits = 8, - .cache_type = REGCACHE_NONE, + .cache_type = REGCACHE_FLAT, .max_register = RS9_REG_BCP, + .num_reg_defaults_raw = 0x8, .rd_table = &rs9_readable_table, .wr_table = &rs9_writeable_table, .reg_write = rs9_regmap_i2c_write, |