diff options
| -rw-r--r-- | Documentation/devicetree/bindings/sound/fsl,asrc.txt | 5 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_asrc.c | 14 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_asrc.h | 2 |
3 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/fsl,asrc.txt b/Documentation/devicetree/bindings/sound/fsl,asrc.txt index b93362a570be..3e26a9478e57 100644 --- a/Documentation/devicetree/bindings/sound/fsl,asrc.txt +++ b/Documentation/devicetree/bindings/sound/fsl,asrc.txt @@ -25,6 +25,11 @@ Required properties: "mem" Peripheral access clock to access registers. "ipg" Peripheral clock to driver module. "asrck_<0-f>" Clock sources for input and output clock. + "spba" The spba clock is required when ASRC is placed as a + bus slave of the Shared Peripheral Bus and when two + or more bus masters (CPU, DMA or DSP) try to access + it. This property is optional depending on the SoC + design. - big-endian : If this property is absent, the little endian mode will be in use as default. Otherwise, the big endian diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index 9f087d4f73ed..cf382475670b 100644 --- a/sound/soc/fsl/fsl_asrc.c +++ b/sound/soc/fsl/fsl_asrc.c @@ -859,6 +859,10 @@ static int fsl_asrc_probe(struct platform_device *pdev) return PTR_ERR(asrc_priv->ipg_clk); } + asrc_priv->spba_clk = devm_clk_get(&pdev->dev, "spba"); + if (IS_ERR(asrc_priv->spba_clk)) + dev_warn(&pdev->dev, "failed to get spba clock\n"); + for (i = 0; i < ASRC_CLK_MAX_NUM; i++) { sprintf(tmp, "asrck_%x", i); asrc_priv->asrck_clk[i] = devm_clk_get(&pdev->dev, tmp); @@ -939,6 +943,11 @@ static int fsl_asrc_runtime_resume(struct device *dev) ret = clk_prepare_enable(asrc_priv->ipg_clk); if (ret) goto disable_mem_clk; + if (!IS_ERR(asrc_priv->spba_clk)) { + ret = clk_prepare_enable(asrc_priv->spba_clk); + if (ret) + goto disable_ipg_clk; + } for (i = 0; i < ASRC_CLK_MAX_NUM; i++) { ret = clk_prepare_enable(asrc_priv->asrck_clk[i]); if (ret) @@ -950,6 +959,9 @@ static int fsl_asrc_runtime_resume(struct device *dev) disable_asrck_clk: for (i--; i >= 0; i--) clk_disable_unprepare(asrc_priv->asrck_clk[i]); + if (!IS_ERR(asrc_priv->spba_clk)) + clk_disable_unprepare(asrc_priv->spba_clk); +disable_ipg_clk: clk_disable_unprepare(asrc_priv->ipg_clk); disable_mem_clk: clk_disable_unprepare(asrc_priv->mem_clk); @@ -963,6 +975,8 @@ static int fsl_asrc_runtime_suspend(struct device *dev) for (i = 0; i < ASRC_CLK_MAX_NUM; i++) clk_disable_unprepare(asrc_priv->asrck_clk[i]); + if (!IS_ERR(asrc_priv->spba_clk)) + clk_disable_unprepare(asrc_priv->spba_clk); clk_disable_unprepare(asrc_priv->ipg_clk); clk_disable_unprepare(asrc_priv->mem_clk); diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h index 4aed63c4b431..68802cdc3f28 100644 --- a/sound/soc/fsl/fsl_asrc.h +++ b/sound/soc/fsl/fsl_asrc.h @@ -426,6 +426,7 @@ struct fsl_asrc_pair { * @paddr: physical address to the base address of registers * @mem_clk: clock source to access register * @ipg_clk: clock source to drive peripheral + * @spba_clk: SPBA clock (optional, depending on SoC design) * @asrck_clk: clock sources to driver ASRC internal logic * @lock: spin lock for resource protection * @pair: pair pointers @@ -442,6 +443,7 @@ struct fsl_asrc { unsigned long paddr; struct clk *mem_clk; struct clk *ipg_clk; + struct clk *spba_clk; struct clk *asrck_clk[ASRC_CLK_MAX_NUM]; spinlock_t lock; |