Update the Imagination PVR driver to skip clock management during
initialization if the platform PM has indicated that it manages platform
resources.
This is necessary for platforms like the T-HEAD TH1520, where the GPU's
clocks and resets are managed via a PM domain, and should not be
manipulated directly by the GPU driver.
Signed-off-by: Michal Wilczynski <m.wilczyn...@samsung.com>
---
drivers/gpu/drm/imagination/pvr_device.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/imagination/pvr_device.c
b/drivers/gpu/drm/imagination/pvr_device.c
index
1704c0268589bdeb65fa6535f9ec63182b0a3e94..f40468b99cf14da418aeecde086f009695ff877c
100644
--- a/drivers/gpu/drm/imagination/pvr_device.c
+++ b/drivers/gpu/drm/imagination/pvr_device.c
@@ -504,10 +504,16 @@ pvr_device_init(struct pvr_device *pvr_dev)
if (err)
return err;
- /* Enable and initialize clocks required for the device to operate. */
- err = pvr_device_clk_init(pvr_dev);
- if (err)
- return err;
+ /*
+ * Only initialize clocks if they are not managed by the platform's
+ * PM domain.
+ */
+ if (!device_platform_resources_pm_managed(dev)) {
+ /* Enable and initialize clocks required for the device to
operate. */
+ err = pvr_device_clk_init(pvr_dev);
+ if (err)
+ return err;
+ }
/* Explicitly power the GPU so we can access control registers before
the FW is booted. */
err = pm_runtime_resume_and_get(dev);
--
2.34.1
