diff options
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_device.c | 22 | ||||
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_device.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c index 970f669c6d29..e6b3171c7179 100644 --- a/drivers/gpu/drm/panfrost/panfrost_device.c +++ b/drivers/gpu/drm/panfrost/panfrost_device.c @@ -55,11 +55,33 @@ static int panfrost_clk_init(struct panfrost_device *pfdev) if (err) return err; + pfdev->bus_clock = devm_clk_get_optional(pfdev->dev, "bus"); + if (IS_ERR(pfdev->bus_clock)) { + dev_err(pfdev->dev, "get bus_clock failed %ld\n", + PTR_ERR(pfdev->bus_clock)); + return PTR_ERR(pfdev->bus_clock); + } + + if (pfdev->bus_clock) { + rate = clk_get_rate(pfdev->bus_clock); + dev_info(pfdev->dev, "bus_clock rate = %lu\n", rate); + + err = clk_prepare_enable(pfdev->bus_clock); + if (err) + goto disable_clock; + } + return 0; + +disable_clock: + clk_disable_unprepare(pfdev->clock); + + return err; } static void panfrost_clk_fini(struct panfrost_device *pfdev) { + clk_disable_unprepare(pfdev->bus_clock); clk_disable_unprepare(pfdev->clock); } diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h index 56f452dfb490..8074f221034b 100644 --- a/drivers/gpu/drm/panfrost/panfrost_device.h +++ b/drivers/gpu/drm/panfrost/panfrost_device.h @@ -66,6 +66,7 @@ struct panfrost_device { void __iomem *iomem; struct clk *clock; + struct clk *bus_clock; struct regulator *regulator; struct reset_control *rstc; |