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authorDmitry Osipenko2020-06-29 06:18:37 +0300
committerThierry Reding2020-07-17 16:06:15 +0200
commit2c2a291d01efdcf336796557de1f651b2581e08d (patch)
tree14138365fb85be10b7c7d4b364bb4abcb6f7a2f4
parent5fba01a0d3488a15c4082bc18aea5375bd8fb97f (diff)
drm/tegra: gr3d: Assert reset before power-gating
Tegra TRM documentation states that hardware should be in a default state when power partition is turned off, i.e. reset should be asserted. This patch adds the missing reset assertions. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
-rw-r--r--drivers/gpu/drm/tegra/gr3d.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/gr3d.c b/drivers/gpu/drm/tegra/gr3d.c
index c0a528be0369..b0b8154e8104 100644
--- a/drivers/gpu/drm/tegra/gr3d.c
+++ b/drivers/gpu/drm/tegra/gr3d.c
@@ -381,10 +381,12 @@ static int gr3d_remove(struct platform_device *pdev)
}
if (gr3d->clk_secondary) {
+ reset_control_assert(gr3d->rst_secondary);
tegra_powergate_power_off(TEGRA_POWERGATE_3D1);
clk_disable_unprepare(gr3d->clk_secondary);
}
+ reset_control_assert(gr3d->rst);
tegra_powergate_power_off(TEGRA_POWERGATE_3D);
clk_disable_unprepare(gr3d->clk);