The BIOS provides an Intel-specific property, let's use it to avoid hard-coded clock dividers.
Signed-off-by: Pierre-Louis Bossart <[email protected]> --- drivers/soundwire/intel.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index fe3266bc1d12..3f876642cb7f 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -909,11 +909,37 @@ static int intel_register_dai(struct sdw_intel *sdw) dais, num_dai); } +static int sdw_master_read_intel_prop(struct sdw_bus *bus) +{ + struct sdw_master_prop *prop = &bus->prop; + struct fwnode_handle *link; + char name[32]; + int nval, i; + + /* Find master handle */ + snprintf(name, sizeof(name), + "mipi-sdw-link-%d-subproperties", bus->link_id); + + link = device_get_named_child_node(bus->dev, name); + if (!link) { + dev_err(bus->dev, "Master node %s not found\n", name); + return -EIO; + } + + fwnode_property_read_u32(link, + "intel-sdw-ip-clock", + &prop->mclk_freq); + return 0; +} + static int intel_prop_read(struct sdw_bus *bus) { /* Initialize with default handler to read all DisCo properties */ sdw_master_read_prop(bus); + /* read Intel-specific properties */ + sdw_master_read_intel_prop(bus); + return 0; } -- 2.20.1
