On 2020-04-13 3:18 pm, Clément Péron wrote:
Hi Steven,
On Mon, 13 Apr 2020 at 15:18, Steven Price steven.price@arm.com wrote:
On 11/04/2020 21:06, Clément Péron wrote:
OPP table can defined both frequency and voltage.
Register the mali regulator if it exist.
Signed-off-by: Clément Péron peron.clem@gmail.com
drivers/gpu/drm/panfrost/panfrost_devfreq.c | 34 ++++++++++++++++++--- drivers/gpu/drm/panfrost/panfrost_device.h | 1 + 2 files changed, 31 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c index 62541f4edd81..2dc8e2355358 100644 --- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c +++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c @@ -78,12 +78,26 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev) struct device *dev = &pfdev->pdev->dev; struct devfreq *devfreq; struct thermal_cooling_device *cooling;
const char *mali = "mali";struct opp_table *opp_table = NULL;/* Regulator is optional */opp_table = dev_pm_opp_set_regulators(dev, &mali, 1);This looks like it applies before 3e1399bccf51 ("drm/panfrost: Add support for multiple regulators") which is currently in drm-misc-next (and linux-next). You want something more like:
Thanks for you review, indeed I didn't see that multiple regulators support has been added. Will update in v2.
Although note that we probably also want a version that can be backported to stable without that dependency, since this behaviour is arguably a regression since 221bc77914cb ("drm/panfrost: Use generic code for devfreq"), and does appear to have been causing subtle problems for users.
Robin.