diff options
| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2024-03-26 10:20:30 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-04-05 13:51:03 +0200 |
| commit | 5b3f661b244973374626f7cc798cea91345786e8 (patch) | |
| tree | 66524027422986151066b6547bc577f47170cf65 /drivers/soundwire | |
| parent | soundwire: intel_ace2.x: power-up first before setting SYNCPRD (diff) | |
| download | linux-5b3f661b244973374626f7cc798cea91345786e8.tar.xz linux-5b3f661b244973374626f7cc798cea91345786e8.zip | |
soundwire: intel_ace2x: set the clock source
Insert clock setup after power-up and before setting up the SYNCPRD,
per hardware recommendations.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20240326092030.1062802-8-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/soundwire')
| -rw-r--r-- | drivers/soundwire/intel_ace2x.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/soundwire/intel_ace2x.c b/drivers/soundwire/intel_ace2x.c index d8ae05cf3d57..43a348db83bf 100644 --- a/drivers/soundwire/intel_ace2x.c +++ b/drivers/soundwire/intel_ace2x.c @@ -33,6 +33,20 @@ static void intel_shim_vs_init(struct sdw_intel *sdw) usleep_range(10, 15); } +static void intel_shim_vs_set_clock_source(struct sdw_intel *sdw, u32 source) +{ + void __iomem *shim_vs = sdw->link_res->shim_vs; + u32 val; + + val = intel_readl(shim_vs, SDW_SHIM2_INTEL_VS_LVSCTL); + + u32p_replace_bits(&val, source, SDW_SHIM2_INTEL_VS_LVSCTL_MLCS); + + intel_writel(shim_vs, SDW_SHIM2_INTEL_VS_LVSCTL, val); + + dev_dbg(sdw->cdns.dev, "clock source %d LVSCTL %#x\n", source, val); +} + static int intel_shim_check_wake(struct sdw_intel *sdw) { void __iomem *shim_vs; @@ -100,6 +114,8 @@ static int intel_link_power_up(struct sdw_intel *sdw) goto out; } + intel_shim_vs_set_clock_source(sdw, clock_source); + if (!*shim_mask) { /* we first need to program the SyncPRD/CPU registers */ dev_dbg(sdw->cdns.dev, "first link up, programming SYNCPRD\n"); |