The GPUCC block on SM6375 is powered by VDD_CX and VDD_GX. If the latter
rail is not online, GX_GDSC will never turn on. Enable runtime pm so that
we can reference VDD_GX from the dt to ensure that.
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
drivers/clk/qcom/gpucc-sm6375.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/qcom/gpucc-sm6375.c b/drivers/clk/qcom/gpucc-sm6375.c
index d3620344a009..2d863dc3d83b 100644
--- a/drivers/clk/qcom/gpucc-sm6375.c
+++ b/drivers/clk/qcom/gpucc-sm6375.c
@@ -7,6 +7,7 @@
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <dt-bindings/clock/qcom,sm6375-gpucc.h>
@@ -434,15 +435,29 @@ MODULE_DEVICE_TABLE(of, gpucc_sm6375_match_table);
static int gpucc_sm6375_probe(struct platform_device *pdev)
{
struct regmap *regmap;
+ int ret;
+
+ ret = devm_pm_runtime_enable(&pdev->dev);
+ if (ret)
+ return ret;
+
+ ret = pm_runtime_resume_and_get(&pdev->dev);
+ if (ret)
+ return ret;
regmap = qcom_cc_map(pdev, &gpucc_sm6375_desc);
- if (IS_ERR(regmap))
+ if (IS_ERR(regmap)) {
+ pm_runtime_put(&pdev->dev);
return PTR_ERR(regmap);
+ }
clk_lucid_pll_configure(&gpucc_pll0, regmap, &gpucc_pll0_config);
clk_lucid_pll_configure(&gpucc_pll1, regmap, &gpucc_pll1_config);
- return qcom_cc_really_probe(pdev, &gpucc_sm6375_desc, regmap);
+ ret = qcom_cc_really_probe(pdev, &gpucc_sm6375_desc, regmap);
+ pm_runtime_put(&pdev->dev);
+
+ return ret;
}
static struct platform_driver gpucc_sm6375_driver = {
--
2.40.1
