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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2020-06-09 04:54:36 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-06-30 21:26:17 +0530 |
| commit | 29d158f906907ce8e52ea75ec87b4e35461f2018 (patch) | |
| tree | 2774f065e78479b51e4c0b316fc3f342fa2e77b7 /include | |
| parent | b5924268d6700821fbd8afe815073b05cebaa308 (diff) | |
| download | linux-stable-29d158f906907ce8e52ea75ec87b4e35461f2018.tar.gz linux-stable-29d158f906907ce8e52ea75ec87b4e35461f2018.tar.bz2 linux-stable-29d158f906907ce8e52ea75ec87b4e35461f2018.zip | |
soundwire: bus: initialize bus clock base and scale registers
The SoundWire 1.2 specification adds new registers to allow for
seamless clock changes while audio transfers are on-going. Program
them following the specification.
Note that dynamic clock changes are not supported for now, this only
adds the register initialization.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200608205436.2402-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/soundwire/sdw_registers.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/soundwire/sdw_registers.h b/include/linux/soundwire/sdw_registers.h index 12f9ffc3eb3b..5d3c271af7d1 100644 --- a/include/linux/soundwire/sdw_registers.h +++ b/include/linux/soundwire/sdw_registers.h @@ -109,8 +109,18 @@ #define SDW_SCP_KEEPEREN 0x4A #define SDW_SCP_BANKDELAY 0x4B #define SDW_SCP_COMMIT 0x4C + #define SDW_SCP_BUS_CLOCK_BASE 0x4D #define SDW_SCP_BASE_CLOCK_FREQ GENMASK(2, 0) +#define SDW_SCP_BASE_CLOCK_UNKNOWN 0x0 +#define SDW_SCP_BASE_CLOCK_19200000_HZ 0x1 +#define SDW_SCP_BASE_CLOCK_24000000_HZ 0x2 +#define SDW_SCP_BASE_CLOCK_24576000_HZ 0x3 +#define SDW_SCP_BASE_CLOCK_22579200_HZ 0x4 +#define SDW_SCP_BASE_CLOCK_32000000_HZ 0x5 +#define SDW_SCP_BASE_CLOCK_RESERVED 0x6 +#define SDW_SCP_BASE_CLOCK_IMP_DEF 0x7 + /* 0x4E is not allocated in SoundWire specification 1.2 */ #define SDW_SCP_TESTMODE 0x4F #define SDW_SCP_DEVID_0 0x50 |