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path: root/drivers/remoteproc/qcom_adsp_pil.c
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Diffstat (limited to 'drivers/remoteproc/qcom_adsp_pil.c')
-rw-r--r--drivers/remoteproc/qcom_adsp_pil.c30
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/remoteproc/qcom_adsp_pil.c b/drivers/remoteproc/qcom_adsp_pil.c
index 914163315091..5bb25d18c9f5 100644
--- a/drivers/remoteproc/qcom_adsp_pil.c
+++ b/drivers/remoteproc/qcom_adsp_pil.c
@@ -15,6 +15,7 @@
* GNU General Public License for more details.
*/
+#include <linux/clk.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -48,6 +49,8 @@ struct qcom_adsp {
struct qcom_smem_state *state;
unsigned stop_bit;
+ struct clk *xo;
+
struct regulator *cx_supply;
struct completion start_done;
@@ -102,10 +105,14 @@ static int adsp_start(struct rproc *rproc)
struct qcom_adsp *adsp = (struct qcom_adsp *)rproc->priv;
int ret;
- ret = regulator_enable(adsp->cx_supply);
+ ret = clk_prepare_enable(adsp->xo);
if (ret)
return ret;
+ ret = regulator_enable(adsp->cx_supply);
+ if (ret)
+ goto disable_clocks;
+
ret = qcom_scm_pas_auth_and_reset(ADSP_PAS_ID);
if (ret) {
dev_err(adsp->dev,
@@ -126,6 +133,8 @@ static int adsp_start(struct rproc *rproc)
disable_regulators:
regulator_disable(adsp->cx_supply);
+disable_clocks:
+ clk_disable_unprepare(adsp->xo);
return ret;
}
@@ -223,6 +232,21 @@ static irqreturn_t adsp_stop_ack_interrupt(int irq, void *dev)
return IRQ_HANDLED;
}
+static int adsp_init_clock(struct qcom_adsp *adsp)
+{
+ int ret;
+
+ adsp->xo = devm_clk_get(adsp->dev, "xo");
+ if (IS_ERR(adsp->xo)) {
+ ret = PTR_ERR(adsp->xo);
+ if (ret != -EPROBE_DEFER)
+ dev_err(adsp->dev, "failed to get xo clock");
+ return ret;
+ }
+
+ return 0;
+}
+
static int adsp_init_regulator(struct qcom_adsp *adsp)
{
adsp->cx_supply = devm_regulator_get(adsp->dev, "cx");
@@ -320,6 +344,10 @@ static int adsp_probe(struct platform_device *pdev)
if (ret)
goto free_rproc;
+ ret = adsp_init_clock(adsp);
+ if (ret)
+ goto free_rproc;
+
ret = adsp_init_regulator(adsp);
if (ret)
goto free_rproc;